CA2010969C - Organosilane coating compositions - Google Patents

Organosilane coating compositions

Info

Publication number
CA2010969C
CA2010969C CA002010969A CA2010969A CA2010969C CA 2010969 C CA2010969 C CA 2010969C CA 002010969 A CA002010969 A CA 002010969A CA 2010969 A CA2010969 A CA 2010969A CA 2010969 C CA2010969 C CA 2010969C
Authority
CA
Canada
Prior art keywords
epoxycyclohexyl
coating composition
group
glycidoxypropyl
antistatic coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002010969A
Other languages
French (fr)
Other versions
CA2010969A1 (en
Inventor
Eizi Takeuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
T S B Ltd
Original Assignee
T S B Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by T S B Ltd filed Critical T S B Ltd
Publication of CA2010969A1 publication Critical patent/CA2010969A1/en
Application granted granted Critical
Publication of CA2010969C publication Critical patent/CA2010969C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04Polysiloxanes
    • C09D183/06Polysiloxanes containing silicon bound to oxygen-containing groups
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S524/00Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S524/91Antistatic compositions
    • Y10S524/912Contains metal, boron, phosphorus, or silicon

Abstract

An antistatic coating composition comprising:
(a) a reaction product of phosphoric acid and an aluminium compound, particularly preferably aluminium dihydrogenphosphate;
(b) a first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group;
(c) a second organosilane compound having two or more hydrolyzable alkoxy groups; and (d) an organic solvent.
The coating compoisition has a long pot life to be stably stored for a long period of time, and may be coated on any of usual materials including metallic, inorganic and organic materials to form a cured coating film which is excellent in resistance to heat, durability, water-proof property and resistance to chemicals by heating at a relatively low temerature for a short time.
Also provided is an improved process for preparing such a coating composition.

Description

TITLE OF THE INVENTION:
Organosilane coating Composition BACKGROUND OF THE INVENTION:
Field of the Invention;
The present invention relates generally to a coating composition.
More particularly, it relates to a novel organosilane coating composition which is adapted to be coated on a metallic materials, such as iron, stainless steel and aluminium or alloys thereof, and other inorganic and organic materials including cement mortar, glass, wood and synthetic resins to form a cured coating film which is excellent in resistance to heat, durability, water-proof property and resistance to chemicals by heating at a relatively low temerature for a short time.
Statement of Related Prior Art:
A process has hitherto been known for preparing a coating composition containing the products of hydrolysis and subsequent partial condensation of silane compounds, wherein the silane compound is dissolved in a solvent miscible with water, such as ethanol, and then subjected to hydrolysis and partial condensation by the catalytic action of an acid in the presence of water.
The known acids generally used as the catalyst in the known process include hydrochloric acid, sulfuric acid and phosphoric acid. However, the use of such mineral acids 2C ~ 969 is detrimental to the properties of the resultant coating composition. For example, when hydrochloric acid is used as the catalyst, hydrochloric ions are not incorporated in the condensation product of silane to be left in the form of free ions to cause electrolytic corrosion. On the other hand, when phosphoric acid is used, although phosphoric ions are incorporated in the condensation product of silane, adhesiveness of the resultant coating composition is becomes inferior or the storage stability thereof becomes poor to shorten the pot life of the coating composition.

There is a demand for an improved antistatic coating composition which can be stored stably for a long period of time and forms a cured coating film having excellent properties, particularly satisfactory antistatic property and high adhesive strength to protect the material coated therewith reliably.
OBJECTS AND SUMMARY OF THE INVENTION: -Accordingly, the primary object of this invention is to provide an antistatic coating composition for forming a cured coating film which is improved in resistance to heat, durability, water-proof property and resistance to chemicals.
Another object of this invention is to provide an antistatic coating composition which is improved in adhesiveness to form a tough coating on a variety of materials including metals and synthetic resins.

~201 0969 A further object of this invention is to provide an antistatic coating composition which can be stored stably for a prolonged period of time and forms an electrically insulating and antistatic coating film by heating at a relatively low temperature.
A still further object of this invention is to provide a process for preparing such a coating composition.
After eager pursuits for preparing an antistatic coating composition, it has been found that an organosilane coating composition having a long pot life and forming a tough coating can be prepared by combining particular hydrolyzable organosilane compounds and then co-polycondensing the products of hydrolysis in the presence of a reaction product of phosphoric acid and an aluminium compound, preferably in the presence of aluminium dihydrogenphosphate. The hydrolysis and subsequent co-polycondensation take place on the material coated with the coating composition of this invention by heating at a relatively low temperature.
More specifically, this invention provides an antistatic coating composition comprising:
(a) a reaction product of phosphoric acid and an aluminium compound:
(b) a first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group;
(c) a second organosilane compound having two or more hydrolyzable alkoxy groups; and (d) an organic solvent.
In the most preferred embodiment, the reaction product of phosphoric acid and an aluminium compound is aluminium dihydrogenphosphate.
According to a further aspect of this invention, provided is a process for the preparation of an antistatic coating composition containing products of hydrolysis and subsequent polycondensation of first and second organosilane compounds, said first organosilane compound having at least one epoxy group and a hydrolyzable alkoxy group and said second organosilane compound having two or more hydrolyzable alkoxy groups, and said partial hydrolysis and subsequent polycondensation being carried out in the presence of at least water, an organic solvent and a catalyst which is a reaction product of phosphoric acid and an aluminium compound, most preferably aluminium dihydrogenphosphate.
In yet another aspect, the present invention provides an antistatic coating composition comprising:
(a) a first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group;
(b) a second organosilane compound having no epoxy group and two or more hydrolyzable alkoxy groups; (c) 2 to 20 wt%, based on the total weight of said first and second organosilane compounds, of aluminum dihydrogenphosphate;
and (d) 50 to 500 parts by weight, based on the total weight of said first and second organosilane compounds, of an organic solvent for said first and second organosilane compounds, wherein said first organosilane compound and said second organosilane compound are present in an amount effective to provide an antistatic coating.
In yet another aspect, the present invention provides, in a process for the preparation of an antistatic coating composition containing products of hydrolysis and subsequent polycondensation of first and second organosilane compounds, said first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group and said second organosilane compound having no epoxy group and two or more hydrolyzable alkoxy groups, and said hydrolysis and subsequent polycondensation being carried out in the presence of water, an organic solvent and a catalyst, the improvement which comprises said catalyst is aluminum dihydrogenphosphate, wherein said first organosilane compound and said second organosilane compound are present in an amount effective to provide an antistatic coating.
DESCRIPTION OF PREFERRED EMBODIMENT:
The present invention will now be described in detail.
As aforementioned, the antistatic coating composition of this invention comprises the four components of (a) a reaction product of phosphoric acid and an aluminium compound (b) a first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group: (c) a second organosilane 4a , .
.

compound having two or more hydrolyzable alkoxy groups; and (d) an organic solvent. The most important feature of the invention is the use of a reaction product of phosphoric acid and an aluminium compound, most preferably aluminium dihydrogenphosphate, which acts as a catalyst for hydrolysis and subsequent co-polycondensation and is incorporated into the molecules of the resultant co-polycondensation product.
Although details of the partial hydrolysis and subsequent co-polycondensation reactions of the first and second organosilane compounds, which take place in the presence of aluminium ~ihydrogenphosphate, have not been fully clarified, it is estimated that the following reactions take place during the heating step effected after the coating composition is coated on a sheet or surface to be coated with the protective coating film.
OR' OR' OH

R-Si(OR')2 > R-Si-OH + R-Si-oH + R-Si-OH

H OR' OH OH

OH R R R

R-Si-OH ~ -Si-O-Si-O-Si-OH OH OH OH

OR' f O \ ~ OR' O \

R-Si-OR' + HO-P-O Al ~ R-Si-o-P-O Al OR' \ 1H ~ 3 \ OR~ OH 3 R R R OH OH
-Si-O-Si-O-Si-O- + HO-P-O-Al-O-P-OH

OH OH OH O O O
HO-P=O
OH
R

--si--o--O O O O

> R-Si-O-P-O-Al-O-P-O-Si-R
Il l I I
1 0 ~ ~ O ~
HO-P=O Si OH R
In the reaction formulae set forth above, R and R' each stands for an alkyl group.
When aluminium dihydrogenphosphate (Al(H2PO4)3) is used as the catalyst, a commercially available 20 to 50%
aqueous solution thereof may be used. The quantity o~
aluminium dihydrogenphosphate added in the composition of this invention ranges, preferably, from 2 to 20~ by weight, based on the total weight of the first and second organo-silane compound contained in the composition. If the added quantity of aluminium dihydrogenphosphate is less than 2~ by weight, the rates of hydrolysis and subsequent co-polycondensation become too low to increase the period of time required for setting or curing the coating composition;
whereas if the added quantity of aluminium dihydrogen-2 0 1 0 9 6 ~

phosphate is more than 20~ by weight, the rates ofhydrolysis and subsequent co-polycondensation become too high to make it impossible to control the reactions and there arises adverse tendency of gelation of the coating composition.
The first organosilane compound, which may be used in the present invention, include those represented by the following formula of:
CH2-CH-CH2-O(CH2)3Si(OR)3;

wherein R is an straight-chain alkyl group having 1 to 2 carbon atoms.
Specific examples of the first organosilane compound are as follows:
~ -glycidoxypropyl trimethoxysilane;

\2 / 2 2 2 2 ( 3)3 r-glycidoxypropyl methyldimethoxysilane;
CH2-CHCH2OCH2CH2CH2Si(OCH3)2 ~-glycidoxypropyl dimethylmethoxysilane;

CH2 -CHCH20CH2CH2CH2SiOCH3 ~-glycidoxypropyl triethoxysilane;
CH -cHcH2ocH2cH2cH2si(oc2 5)3 ~-glycidoxypropyl methyldiethoxysilane;
CH2-CHCH2OCH2CH2CH2Si(OCH3)2 ~-glycidoxypropyl dimethylethoxysilane;

CH2-CHCH2OCH2CH2CH2Si(OCH3)3 ~-(3,4-epoxycyclohexyl)ethyltrimethoxysilane;

O- C - CH
HC CHCH2CH2Si(OCH3)3 H C - CH
~-(3,4-epoxycyclohexyl)ethylmethyldimethoxysilane;
H
O- C - CH CH
I / \2 1 3 HC / 2 2 ( 3)2 H C - CH
~-(3,4-epoxycyclohexyl)ethyldimethylmethoxysilane;
H

HC CHCH2CH2SiOCH3 r ~-(3,4-epoxycyclohexyl)ethyltriethoxysilane;
H
O- C - CH
HC CHcH2cH2si(oc2H5)3 ~-(3,4-epoxycyclohexyl)ethylmethyldiethoxysilane:
H

HC CHcH2cH2si(oc2H5)2 ~-(3,4-epoxycyclohexyl)ethyldimethylethoxysilane:
H

and mixtures thereof.
It is possible to use co-polycondensation products prepared by hydrolysis of any one or more of the first organosilane compounds set forth above and subsequent partial co-polycondensation of the products of the hydrolysis.
The second organosilane compounds, which may be preferably used in the composition of this invention include those represented by the following formula of:
CH3Si(OR)3:
wherein R is a straight-chain alkyl group having 2Q~9~i9 1 to 2 carbon atoms.
Specific examples of the second organosilane compounds are methyltrimethoxysilane, ethyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, phenylmethyldimethoxysilane, diphenyldimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane, dimethyldiethoxysilane, phenylmethyldiethoxysilane, diphenyldiethoxysilane, orthomethyl silicate, orthoethyl silicate and mixtures thereof.
It is possible to use co-polycondensation products prepared by hydrolysis of any one or more of the second organosilane compounds set forth above and subsequent partial co-polycondensation of the products of hydrolysis.
The organic solvent used in the composition of this invention is a solvent for the organosilane compounds, the solvent being miscible with water. The organic solvent serves to dissolve and disperse the used catalyst, preferably aluminium dihydrogenphosphate, and to properly control the hydrolysis and subsequent polycondensation reactions. Although it is preferred to use a polar solvent, a mixture of a polar solvent with a non-polar solvent may also be used.
Specific examples of the polar solvent, which may be used in the composition of this invention, are alcohols such as methanol, ethanol, isopropanol, n-butanol and _ 2 0 1 0 9 6 g isobutanol; ether alcohols such as ethyleneglycol monomethyl ether, ethyleneglycol monoethyl ether and ethyleneglycol monobutyl ether; esters such as methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, amyl acetate, ethyleneglycol monomethyl ether acetate and ethyleneglycol monoethyl ether acetate; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and diacetone alcohol;
and mixtures thereof. The most preferable polar solvent is methanol, since it is inexpensive and perfectly miscible with water.
Specific examples of preferable non-polar solvent, which may be added to the polar solvent, are hexane, heptane, octane and mixtures thereof. Although an aromatic compound such as toluene and xylene may be added to the polar solvent, it is desirable that the aromatic compound be used as little as possible since the coating composition becomes cloudy when a large amount thereof is added.
The content of the organic solvent ranges preferably from 50 to 500 parts by weight, based on the total weight of the first and second organosilane compounds.
If the content of the organic solvent is less than 50 parts by weight, the viscosity of the resultant coating composition becomes too high and the pot life of the composition is shortened. On the contrary, although the pot life of the resultant coating composition can be prolonged 20 t 0 9 6 9 by adding 500 parts by weight or more of the organic solvent, the viscosity of the composition becomes too low and makes it difficult to form a coating film having a sufficient thickness.
Water contained in the coating composition of this invention is normally supplied as water used for dissolving aluminium dihydrogenphosphate. However, water may be added as desired to prepare a coating composition having a proper VlS COS 1 ty.
EXAMPLE
The present invention will now be described more specifically with reference to an example thereof. However, it is to be noted hereby that the following example is given by way of example only and thus the invention should not be limited thereby, the scope of the invention being defined by the appended claims.
A coating composition was prepared by mixing the components, as will be set forth below, and the mixture was allowed to stand at room temperature for 24 hours:
Methyltrimethoxysilane 25g ~-Glycidoxypropyltrimethoxysilane 25g 50 wt% Aqueous Solution of Aluminium lOg Dihydrogenphosphate Methanol 50g The following are the properties of the thus pre-pared coating composition and the coating film after curing.

~ 20 1 0 9 6 9 Properties of the Coating Composition:
Specific Gravity: 0.939 (at 25~C) Viscosity: 3.5 cp. (at 25~C) Properties of the Cured Coating Film:
Condition for Curing Pencil Hardness 25~C, 1 hr. 3H
25~C, 24 hrs. 6H
70~C, 2 hrs. 5H
100~C, 2 hrs. 9H
Surface Resistivity:
The surface resistivity of a cured coating film applied on an acrylic resin plate was measured by the method stipulated in JIS K 6911 to find that the surface resistivity was 1.0 x 10 ohm.cm.
The coating composition was applied on plates, respectively, made of an ABS resin, PZ, Teflon (Trade Mark) and PVC, and the surface resistivities of the cured coating films were measured. The results were substantially equivalent to that of the coating film applied on the acrylic resin plate.
Antistatic Property:
The coating composition was applied on an acrylic resin plate and then cured. The antistatic property of the cured coating film was measured by the JIS L-1094 method to obtain the following results (the results being expressed by the half-value periods of the 20 ~ 0969 initial values when an electric potential of 10 KV was applied). The results revealed that the cured coating films formed by the use of the coating composition of the invention exhibited superior antistatic effects.
Equivalent results were obtained when the coating composition was applied, respectively, on different substrates made of PVC, PZ, Teflon (Trade Mark) and ABS.
Normal Condition (25~C, 55% RH*) 1.0 sec.
25~C, 30% RH* 5.0 sec.
After being treated at 70~C for 100 hrs. 11.9 sec.
*Note: RH = Relative Humidity As will be seen from the data given above, the coating composition of the invention forms a cured coating film superior over that obtainable by the conventional technology.
Although the invention has been described with reference to a presently preferred embodiment, many modifications and alternations may be conceived by a person having ordinary skill in the art without departing from the spirit and scope of the invention which is defined in the appended claims.

Claims (27)

1. An antistatic coating composition comprising:
(a) a reaction product of phosphoric acid and an aluminium compound;
(b) a first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group;
(c) a second organosilane compound having two or more hydrolyzable alkoxy groups; and (d) an organic solvent.
2. The antistatic coating composition according to claim 1, wherein said reaction product of phosphoric acid and an aluminum compound is aluminum dihydrogenphosphate.
3. The antistatic coating composition according to claim 1, wherein said first organosilane compound is selected from the group consisting of:
.gamma.-glycidoxypropyl trimethoxysilane;
.gamma.-glycidoxypropyl methyldimethoxysilane;
.gamma.-glycidoxypropyl dimethylmethoxysilane;
.gamma.-glycidoxypropyl triethoxysilane;
.gamma.-glycidoxypropyl methyldiethoxysilane;
.gamma.-glycidoxypropyl dimethylethoxysilane;

.beta.-(3,4-epoxycyclohexyl)ethyltrimethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethylmethyldimethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethyldimethylmethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethyltriethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethylmethyldiethoxysilane;

.beta.-(3,4-epoxycyclohexyl)ethyldimethylethoxysilane;
and mixtures thereof.
4. An antistatic coating composition comprising:
(a) a reaction product of phosphoric acid and an aluminium compound;
(b) a co-polycondensation product prepared by hydrolysis of any one or more of the first organosilane compounds set forth in claim 3 and subsequent partial polycondensation of the products of said hydrolysis, (c) a second organosilane compound having two or more hydrolyzable alkoxy groups; and (d) an organic solvent.
5. The antistatic coating composition according to claim 1, wherein said second organosilane compound is selected from the group consisting of methyltrimethoxysilane, ethyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, phenylmethyldimethoxysilane, diphenyldimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane, dimethyldiethoxysilane, phenylmethyldiethoxysilane, diphenyldiethoxysilane, orthomethyl silicate, orthoethyl silicate and mixtures thereof.
6. An antistatic coating composition comprising:
(a) a reaction product of phosphoric acid and an aluminium compound;
(b) a first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group;
(c) a co-polycondensation product prepared by hydrolysis of any one or more of the second organosilane compounds set forth in claim 5 and subsequent partial polycondensation of the products of said hydrolysis; and (d) an organic solvent.
7. The antistatic coating composition according to claim 1, wherein said organic solvent is a polar solvent.
8. The antistatic coating composition according to claim 7, wherein said polar solvent is selected from the group consisting of alcohols selected from the group comprising methanol, ethanol, isopropanol, n-butanol and isobutanol; ether alcohols selected from the group consisting of ethyleneglycol monomethyl ether, ethyleneglycol monoethyl ether and ethyleneglycol monobutyl ether; esters selected from the group consisting of methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, amyl acetate, ethyleneglycol monomethyl ether acetate and ethyleneglycol monoethyl ether acetate;
ketones selected from the group consisting of acetone, methyl ethyl ketone, methyl isobutyl ketone and diacetone alcohol; and mixtures thereof.
9. The antistatic coating composition according to claim l, wherein said organic solvent is a mixture of a polar solvent and a non-polar solvent.
10. The antistatic coating composition according to claim 9, wherein said non-polar solvent is selected from the group consisting of hexane, heptane, octane and mixtures thereof.
11. In a process for the preparation of an antistatic coating composition containing products of hydrolysis and subsequent polycondensation of first and second organosilane compounds, said first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group and said second organosilane compound having two or more hydrolyzable alkoxy groups, and said hydrolysis and subsequent polycondensation being carried out in the presence of at least water, an organic solvent and a catalyst, an improvement which comprises said catalyst is aluminium hydrogenphosphate.
12. The improved process according to claim 11, wherein said aluminium hydrogen phosphate is aluminium dihydrogenphosphate.
13. The improved process according to claim 11, wherein said first organosilane compound is selected from the group consisting of:
.gamma.-glycidoxypropyl trimethoxysilane;
.gamma.-glycidoxypropyl methyldimethoxysilane;
.gamma.-glycidoxypropyl dimethylmethoxysilane;
.gamma.-glycidoxypropyl triethoxysilane;
.gamma.-glycidoxypropyl methyldiethoxysilane;
.gamma.-glycidoxypropyl dimethylethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethyltrimethoxysilane:
.beta.-(3,4-epoxycyclohexyl)ethylmethyldimethoxysilane::
.beta.-(3,4-epoxycyclohexyl)ethyldimethylmethoxysilane::
.beta.-(3,4-epoxycyclohexyl)ethyltriethoxysilane:
.beta.-(3,4-epoxycyclohexyl)ethylmethyldiethoxysilane:
.beta.-(3,4-epoxycyclohexyl)ethyldimethylethoxysilane:
and mixtures thereof: and wherein said second organosilane compound is selected from the group consisting of methyltrimethoxysilane, ethyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, phenylmethyldimethoxysilane, diphenyldimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane, dimethyldiethoxysilane, phenylmethyldiethoxysilane, diphenyldiethoxysilane, orthomethyl silicate, orthoethyl silicate and mixtures thereof.
14. The improved process according to any of claims 11 to 13, wherein said catalyst is added in an amount of from 2 to 20 parts by weight based on the total weight of said first and second organosilane compounds.
15. The improved process according to any of claims 11 to 13, wherein said catalyst is added in the form of an aqueous solution containing 20 to 50% of aluminium hydrogenphosphate.
16. The improved process according to claim 14, wherein said catalyst is added in the form of an aqueous solution containing 20 to 50 % of aluminium hydrogenphosphate.
17. An antistatic coating composition comprising:
(a) a first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group;
(b) a second organosilane compound having no epoxy group and two or more hydrolyzable alkoxy groups;
(c) 2 to 20 wt%, based on the total weight of said first and second organosilane compounds, of aluminum dihydrogenphosphate; and (d) 50 to 500 parts by weight, based on the total weight of said first and second organosilane compounds, of an organic solvent for said first and second organosilane compounds, wherein said first organosilane compound and said second organosilane compound are present in an amount effective to provide an antistatic coating.
18. The antistatic coating composition according to claim 17, wherein said first organosilane compound is selected from the group consisting of:
.gamma.-glycidoxypropyl trimethoxysilane;
.gamma.-glycidoxypropyl methyldimethoxysilane;
.gamma.-glycidoxypropyl dimethylmethoxysilane;
.gamma.-glycidoxypropyl triethoxysilane;
.gamma.-glycidoxypropyl methyldiethoxysilane;
.gamma.-glycidoxypropyl dimethylethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethyltrimethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethylmethyldimethoxysilane;
.beta.-(3,4-epoxycyclohexyl)ethyldimethylmethoxysilane;

.beta.(3,4-epoxycyclohexyl)ethyltriethoxysilane;
.beta.(3,4-epoxycyclohexyl)ethylmethyldiethoxysilane;
.beta.(3,4-epoxycyclohexyl)ethyldimethylethoxysilane;
and mixtures thereof.
19. The antistatic coating composition according to claim 17, wherein said second organosilane compound is selected from the group consisting of:
methyltrimethoxysilane, ethyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, phenylmethyldimethoxysilane, diphenyldimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane, dimethyldiethoxysilane, phenylmethyldiethoxysilane, diphenyldiethoxysilane, orthomethyl silicate, orthoethyl silicate, and mixtures thereof.
20. The antistatic coating composition according to claim 17, wherein said organic solvent is a polar solvent.
21. The antistatic coating composition according to claim 20, wherein said polar solvent is selected from the group consisting of alcohols, ether alcohols, esters, ketones and mixtures thereof.
22. The antistatic coating composition according to claim 20, wherein said polar solvent is selected from the group consisting of methanol, ethanol, isopropanol, n-butanol, isobutanol, ethyleneglycol monomethyl ether, ethyleneglycol monoethyl ether, ethyleneglycol monobutyl ether, methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, amyl acetate, ethyleneglycol monomethyl ether acetate, ethyleneglycol monoethyl ether acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, diacetone alcohol and mixtures thereof.
23. The antistatic coating composition according to claim 17, wherein said organic solvent is a mixture of a polar solvent and a non-polar solvent.
24. The antistatic coating composition according to claim 23, wherein said non-polar solvent is selected from the group consisting of hexane, heptane, octane, and mixtures thereof.
25. In a process for the preparation of an antistatic coating composition containing products of hydrolysis and subsequent polycondensation of first and second organosilane compounds, said first organosilane compound having at least one epoxy group and at least one hydrolyzable alkoxy group and said second organosilane compound having no epoxy group and two or more hydrolyzable alkoxy groups, and said hydrolysis and subsequent polycondensation being carried out in the presence of water, an organic solvent and a catalyst, the improvement which comprises said catalyst is aluminum dihydrogenphosphate, wherein said first organosilane compound and said second organosilane compound are present in an amount effective to provide an antistatic coating.
26. The improved process according to claim 25, wherein said first organosilane compound is selected from the group consisting of:
-glycidoxypropyl trimethoxysilane;
-glycidoxypropyl methyldimethoxysilane;
-glycidoxypropyl dimethylmethoxysilane;
-glycidoxypropyl triethoxysilane;
-glycidoxypropyl methyldiethoxysilane;
-glycidoxypropyl dimethylethoxysilane;
-(3,4-epoxycyclohexyl)ethyltrimethoxysilane;
-(3,4-epoxycyclohexyl)ethylmethyldimethoxysilane;
-(3,4-epoxycyclohexyl)ethyldimethylmethoxysilane;
-(3,4-epoxycyclohexyl)ethyltriethoxysilane;
-(3,4-epoxycyclohexyl)ethylmethyldiethoxysilane;
-(3,4-epoxycyclohexyl)ethyldimethylethoxysilane;
and mixtures thereof; and wherein said second organosilane compound is selected from the group consisting of:
methyltrimethoxysilane, ethyltrimethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, phenylmethyldimethoxysilane, diphenyldimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane, dimethyldiethoxysilane.
27. The improved process according to claim 25, wherein aluminum dihydrogenphosphate is added in the form of an aqueous solution containing 20 to 50% of aluminum dihydrogenphosphate.
CA002010969A 1989-07-03 1990-02-27 Organosilane coating compositions Expired - Fee Related CA2010969C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1169793A JPH0335073A (en) 1989-07-03 1989-07-03 Production of inorganic coating composition
JP169793/1989 1989-07-03

Publications (2)

Publication Number Publication Date
CA2010969A1 CA2010969A1 (en) 1991-01-03
CA2010969C true CA2010969C (en) 1999-05-11

Family

ID=15892989

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002010969A Expired - Fee Related CA2010969C (en) 1989-07-03 1990-02-27 Organosilane coating compositions

Country Status (3)

Country Link
US (1) US5091468A (en)
JP (1) JPH0335073A (en)
CA (1) CA2010969C (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567235A (en) * 1990-08-30 1996-10-22 Elf Atochem North America, Inc. Method for strengthening a brittle oxide substrate, silane-based compositions, and a polymerized cross-linked siloxane coated brittle oxide substrate
US6013333A (en) * 1990-08-30 2000-01-11 Elf Atochem North America, Inc. Method for strengthening a brittle oxide substrate
JP2791253B2 (en) * 1992-08-31 1998-08-27 松下電器産業株式会社 Antistatic film and method for producing the same
PE56294A1 (en) * 1993-06-21 1995-01-17 Atochem North America Elf A METHOD FOR STRENGTHENING A CRISPABLE OXIDE SUBSTRATE, SILANO BASED COMPOSITIONS, AND A SILOXANE COATED CROSS-LINED CROSS-CROSSED OXIDE SUBSTRATE
US5728203A (en) * 1995-10-26 1998-03-17 Lord Corporation Aqueous protective and adhesion promoting composition
JP2000505143A (en) * 1996-11-22 2000-04-25 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Lacquer composition
DE19649183A1 (en) * 1996-11-27 1998-06-04 Fraunhofer Ges Forschung Antistatic agent, process for its preparation and its use for the production of antistatic coatings
US6037008A (en) * 1998-09-08 2000-03-14 Ck Witco Corporation Use of emulsified silane coupling agents as primers to improve adhesion of sealants, adhesives and coatings
US6461419B1 (en) 1999-11-01 2002-10-08 3M Innovative Properties Company Curable inkjet printable ink compositions
KR100521889B1 (en) * 2001-01-19 2005-10-17 바이오시스텍 주식회사 Container having functions of removing ethylene and suppressing generation of ethylene
EP1381331B1 (en) 2001-03-16 2009-03-11 Novartis AG Method for making a colored contact lens
US6793971B2 (en) 2001-12-03 2004-09-21 Cardinal Ig Company Methods and devices for manufacturing insulating glass units
JP4680611B2 (en) * 2004-01-20 2011-05-11 株式会社砺波商店 Tableware
US7530683B2 (en) * 2004-07-29 2009-05-12 E.I. Du Pont De Nemours And Company Fixing fluid and inkjet ink sets comprising same
DE102005001616A1 (en) * 2005-01-12 2006-07-20 Huhtamaki Forchheim Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Antistatic surface finish
US20090264316A1 (en) * 2008-04-17 2009-10-22 Marshall University Research Corporation Ultraviolet/Ozone Patterned Organosilane Surfaces
EP4206272A1 (en) * 2021-12-28 2023-07-05 Kyushu High Tech. Co., Ltd Inorganic glass coating agent
CN115260899A (en) * 2022-07-28 2022-11-01 广东美的白色家电技术创新中心有限公司 Hydrophobic coating and preparation method and application thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56103224A (en) * 1980-01-22 1981-08-18 Toshiba Silicone Co Ltd Preparation of epoxy-modified silicone resin
JPS6243468A (en) * 1985-08-21 1987-02-25 Kansai Paint Co Ltd Water-based organic silicone resin coating composition

Also Published As

Publication number Publication date
CA2010969A1 (en) 1991-01-03
US5091468A (en) 1992-02-25
JPH0335073A (en) 1991-02-15
JPH0545612B2 (en) 1993-07-09

Similar Documents

Publication Publication Date Title
CA2010969C (en) Organosilane coating compositions
US4605446A (en) Process for preparing organosilicon high condensation products
US4218354A (en) Binder composition and coating containing the same
US3392130A (en) Coating compositions comprising polyvinyl butyral-hydrolyzed alkyl silicate reactionproduct and zinc dust
US4354013A (en) Process for preparing epoxy-modified silicone resins
US5318618A (en) Primer compositions
US5186743A (en) Low volatile organic content hybrid silica binder
JPS59136363A (en) Alumina containing organic silicon resin
US4014703A (en) One package coating composition
US4154617A (en) Silicon coating compositions and method of production
DE2258089A1 (en) COATING AGENTS AND PROCESS FOR ITS MANUFACTURING
US4208452A (en) Method for protecting metallic substrates
US5137573A (en) Coating composition
JP5641434B2 (en) Coating agent
JPH0369384B2 (en)
EP0048114A1 (en) Siloxane resin compositions and preparation and use
GB1575383A (en) Silicic acid mixed ester compositions
JP3242442B2 (en) Composition for coating
JPH0422953B2 (en)
JP2768808B2 (en) Resin composition for zinc rich paint
JP3149347B2 (en) Coating composition
KR20100105105A (en) Nano ceramic coating composition and preparing method thereof
US5384350A (en) Binders for storage-stable coating compositions
JPH0572927B2 (en)
KR100381717B1 (en) Method for preparing ceramic binder

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed