CA2624312A1 - Two-component systems for producing flexible coatings - Google Patents

Two-component systems for producing flexible coatings Download PDF

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Publication number
CA2624312A1
CA2624312A1 CA 2624312 CA2624312A CA2624312A1 CA 2624312 A1 CA2624312 A1 CA 2624312A1 CA 2624312 CA2624312 CA 2624312 CA 2624312 A CA2624312 A CA 2624312A CA 2624312 A1 CA2624312 A1 CA 2624312A1
Authority
CA
Canada
Prior art keywords
coating systems
component coating
systems according
groups
zinc
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.)
Granted
Application number
CA 2624312
Other languages
French (fr)
Other versions
CA2624312C (en
Inventor
Michael Mager
Meike Niesten
Malte Homann
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.)
Covestro Deutschland AG
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Individual
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 Individual filed Critical Individual
Publication of CA2624312A1 publication Critical patent/CA2624312A1/en
Application granted granted Critical
Publication of CA2624312C publication Critical patent/CA2624312C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/7806—Nitrogen containing -N-C=0 groups
    • C08G18/7818—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups
    • C08G18/7837—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups containing allophanate groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4866—Polyethers having a low unsaturation value
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/02—Polyureas
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/12—Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]

Abstract

The invention relates to two-component coating systems for producing flexible coatings. Said coating systems comprise polyurethane prepolymers having allophanate structures, in addition to amino-functional polyaspartic acid esters as hardeners.

Claims (11)

1. Two-component coating systems at least comprising A) a polyisocyanate prepolymer having polyether groups attached via allophanate groups and B) amino-functional polyaspartic esters of the general formula (I) in which X is an n-valent organic radical obtained by removing the primary amino groups of an n-valent polyamine, R1 and R2 are identical or different organic radicals which are inert towards isocyanate groups under the reaction conditions and n is a whole number of at least 2.
2. Two-component coating systems according to Claim 1, characterized in that the allophanates used in A) are prepared by reacting A1) one or more aliphatic and/or cycloaliphatic polyisocyanates with A2) one or more polyhydroxy compounds, at least one being a polyether polyol, to give an NCO-functional polyurethane prepolymer and then subsequently subjecting its urethane groups thus formed to partial or complete allophanatization with addition of A3) polyisocyanates, which can be different from those from A1), and A4) catalysts and A5) optionally stabilizers.
3. Two-component coating systems according to Claim 2, characterized in that the allophanates used in A) are prepared using, in components A1) and A3), hexane diisocyanate (hexamethylene diisocyanate, HDI), 4,4'-methylenebis(cyclohexyl isocyanate) and/or 3,5,5-trimethyl-1-isocyanato-3-isocyanatomethylcyclohexane (isophorone diisocyanate, IPDI) as polyisocyanates.
4. Two-component coating systems according to Claim 2 or 3, characterized in that polyisocyanates of the same type are used in A1) and A3).
5. Two-component coating systems according to any one of Claims 2 to 4, characterized in that zinc(II) compounds are used as catalysts for the allophanatization in A4).
6. Two-component coating systems according to Claim 5, characterized in that zinc(II) compounds used are zinc(II) bis(2-ethylhexanoate), zinc(II) bis(n-octoate), zinc(II) bis-(stearate) or mixtures thereof.
7. Two-component coating systems according to any one of Claims 2 to 6, characterized in that polyether polyols are used exclusively in A2), these polyols having number-average molecular weights M,, of 2000 to 6000 g/mol, an average OH functionality of >= 1.95 and a degree of unsaturated end groups of less than or equal to 0.01 meq/g in accordance with ASTM D2849-69.
8. Two-component coating systems according to any one of Claims 2 to 7, characterized in that the molar ratio of the OH groups of the compounds of component A2) to the NCO-groups of the polyisocyanates from A1) and A3) is 1:2 to 1:10.
9. Two-component coating systems according to any one of Claims 2 to 8, characterized in that stabilizers used in A5) are organic or inorganic acids, acid halides or esters.
10. Coatings obtainable from two-component coating systems according to any of one of Claims 1 to 9.
11. Substrates coated with coatings according to Claim 10.
CA 2624312 2005-10-04 2006-09-22 Two-component systems for producing flexible coatings Expired - Fee Related CA2624312C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005047562A DE102005047562A1 (en) 2005-10-04 2005-10-04 Two-component coating system for production of flexible coatings on various substrates, contains a polyisocyanate prepolymer with allophanate-linked polyether groups and an aminofunctional polyaspartate ester as hardener
DE102005047562.0 2005-10-04
PCT/EP2006/009203 WO2007039133A1 (en) 2005-10-04 2006-09-22 Two-component systems for producing flexible coatings

Publications (2)

Publication Number Publication Date
CA2624312A1 true CA2624312A1 (en) 2007-04-12
CA2624312C CA2624312C (en) 2014-03-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2624312 Expired - Fee Related CA2624312C (en) 2005-10-04 2006-09-22 Two-component systems for producing flexible coatings

Country Status (15)

Country Link
US (1) US7927704B2 (en)
EP (1) EP1937742B1 (en)
JP (1) JP5275032B2 (en)
KR (1) KR20080064822A (en)
CN (1) CN101277988A (en)
AT (1) ATE554117T1 (en)
AU (1) AU2006299127B2 (en)
BR (1) BRPI0616849A2 (en)
CA (1) CA2624312C (en)
DE (1) DE102005047562A1 (en)
ES (1) ES2383224T3 (en)
IL (1) IL190075A0 (en)
NO (1) NO20081898L (en)
PL (1) PL1937742T3 (en)
WO (1) WO2007039133A1 (en)

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IL190075A0 (en) 2008-08-07
NO20081898L (en) 2008-04-21
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WO2007039133A1 (en) 2007-04-12
EP1937742B1 (en) 2012-04-18
US7927704B2 (en) 2011-04-19
CA2624312C (en) 2014-03-25
ATE554117T1 (en) 2012-05-15
CN101277988A (en) 2008-10-01
ES2383224T3 (en) 2012-06-19
KR20080064822A (en) 2008-07-09
BRPI0616849A2 (en) 2011-07-05
JP2009510238A (en) 2009-03-12
JP5275032B2 (en) 2013-08-28
US20070078255A1 (en) 2007-04-05

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