WO1998004603A1 - Thermoformable cast poly(methyl methacrylate) - Google Patents
Thermoformable cast poly(methyl methacrylate) Download PDFInfo
- Publication number
- WO1998004603A1 WO1998004603A1 PCT/GB1997/002020 GB9702020W WO9804603A1 WO 1998004603 A1 WO1998004603 A1 WO 1998004603A1 GB 9702020 W GB9702020 W GB 9702020W WO 9804603 A1 WO9804603 A1 WO 9804603A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- methacrylate
- poly
- weight
- curable composition
- sheet
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
Definitions
- thermoformable cast poly(methyl methacrylate) is prepared by polymerising suitable curable compositions between sheets of glass (cell casting) or between two opposing endless metal bands (band casting) so as to provide the thermoformable cast poly(methyl methacrylate) in the form of sheet.
- T e sheet can be subsequently thermoformed to manufacture articles such as sanitary ware, e.g. baths, washbasins and shower trays.
- the sheet is preheated to a predetermined temperature, for example as calculated according to the formula stated in GB 1577517, and is then drawn into a mould under the influence of pressure or vacuum.
- the present invention is directed towards an improved thermoformable cast poly(methacrylate), such as poly(methyl methacrylate), particularly in the form of sheet, which does not need to be thermoformed at relatively high temperatures, which has acceptable Vicat
- the present invention provides a curable composition capable of being cured to form a thermoformable cast poly(methacrylate) which composition comprises
- thermoformable cast poly(methacrylate) sheet capable of being formed from a curable composition as hereinbefore
- TGA thermogravimet ⁇ c analysis
- the poly(methacrylate) in the syrup is preferably formed from the same monomeric methacrylate which is also present in the syrup.
- the poly(methacrylate) represents from 5 to 35 %, more typically from 5 to 15 %, by weight of the syrup and preferably from 7 to
- the syrup may be prepared by the mixing of the poly(methacrylate) with the monomeric methacrylate, it is preferred that the syrup is prepared by partially polymerising the monomeric methacrylate so as to form the poly(methacrylate) in situ The conditions are controlled such that the poly(methacrylate) formed in situ is of an appropriate molecular weight for use in the
- the poly(methyacrylate) and monomeric methacrylate are preferably derived from lower alkyl methacrylates, e.g. C, to C 4 methacrylates, and in particular methyl methacrylate
- the poly(methacrylate) may be a copolymer Additionally, one or more monomeric methacrylates may be used.
- the poly(methacrylate) is a homopolymer, particularly poly(methyl methacrylate) and that the monomeric methacrylate is methyl methacrylate.
- the use of the catalytic chain transfer agent allows for the incorporation of a minor proportion of one or more lower alkyl acrylates, C, to C 4 acrylates, into the curable
- the acrylate is butyl acrylate
- the at least one initiator may be one or more initiators commonly used in the preparation of conventional thermoformable cast poly(methacrylate) Suitable initiators include azodnsobutyronitrile, peroxydicarbonates such as di-isopropyl, di-n-butyl, di-isobutyl, 5 dicyclohexyl, or b ⁇ s-(4-t-butyl cyclohexyl) peroxydicarbonate, and t-butyl perpivalate
- two or more initiators are chosen such that the lifetime and activity of the initiators are optimised during curing.
- the catalytic chain transfer agent, or residue thereof, is or is derived from a cobalt chelate
- Suitable cobalt chelates are as described in US 4694054, US 5028677 and US 10 4680352 Particularly preferred is a cobalt chelate having the following general formula I
- R can be selected from of a variety of groups such as methyl and phenyl, particularly phenyl, and which is known generally as CoBF.
- the catalytic chain transfer agent is or is derived from cobaloxime.
- the catalytic chain transfer agent is added at very low concentrations, i e. from 0.0001 to 0.001 , for example from 0.001 to 0.0005, % by weight on the curable composition 5
- the catalytic chain transfer agent is present from 0 00025 to 0.0003 % by weight, i e 2 5 to 3 ppm, in the curable composition
- the average molecular weight is in the range 350000 to 500000 and in particular from 380000 to 480000.
- Increased amounts of the catalytic chain transfer agent reduce the molecular weight.
- thermoformable cast poly(methacrylate) of the present invention shows some decomposition between 260 and 300°C typical of non-saturated terminal groups.
- the poly(methacryiate) is formed in situ by the use of a catalytic chain transfer agent as hereinbefore described the syrup will contain residues of such a chain transfer agent. Such residues will be present in the syrup at the levels hereinbefore stated.
- the crosslinking agent may be chosen from any conventionally used.
- the crosslinking agent is chosen from at least one of ethylene glycol dimethacrytate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, triallyl cyanurate, allyl methacrylate, allyl acrylate, triallyl phosphate, diallyl maleate, methallyl acrylate, vinyl methacrylate and divinyl benzene.
- ethylene glycol dimethacrylate Particularly preferred is ethylene glycol dimethacrylate.
- Other conventional additives include splitting aids such as Texol (obtained from
- Example 1 illustrates the present invention.
- a reactive mixture was prepared containing 2000 kg of monomeric methyl methacrylate, 100 g of UV stabiliser (Aduvex - The Great Lakes Fine Chemicals Ine), 1200 g of splitting aid (Texol) and 38 g of initiator (azodiisobutyronitrile - AZDN). The mixture was stirred and heated to about 82°C until a syrup containing about 8% by weight of poly(methyl methacrylate) was formed.
- UV stabiliser Aduvex - The Great Lakes Fine Chemicals Ine
- Texol splitting aid
- initiator azodiisobutyronitrile - AZDN
- a curable composition was formed having the following composition:
- the curable composition was stirred and then poured into casting cells formed from sheets of glass so as to eventually provide sheets having thicknesses of 3.2 and 5 mm respectively. Curing followed a two stage heating process. The filled cells were first slowly heated to 90 D C at which they were held for 1 hour. Thereafter the temperature was slowly raised to about 120 C C at which they were held for a further 30 minutes. After curing, the cells were slowly cooled to room temperature.
- the 5 mm thick sheets had a Vicat Softening Point (VSP) of 107.4°C and the 3 mm thick sheets had a VSP of 108.0°C.
- VSP Vicat Softening Point
- TGA of samples of the sheet showed decomposition occurring between 260 and
- thermoformable cast poly(methacryiate) prepared in the absence of cobalt chelate 300°C which was absent from conventional thermoformable cast poly(methacryiate) prepared in the absence of cobalt chelate.
- Example 1 was repeated except that the CoBF was replaced by cobaloxime.
- the 5mm sheet had a VSP of 109.2°C and showed a decomposition between 260 and 300 C C when subjected to TGA.
- Example 2 was repeated except that the cobaloxime was used at a level of 3ppm.
- the 5mm sheet had a VSP of 109.6°C and again showed decomposition between 260 and 5 300°C.
- Example 1 was repeated except that the syrup contained 3.4 % by weight of butyl acrylate.
- the 3.2 mm sheet had a VSP of 105.4°C and the 5 mm sheet had a VSP of 105.2°C
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU37009/97A AU740435B2 (en) | 1996-07-25 | 1997-07-25 | Thermoformable cast poly(methyl methacrylate) |
EP97933765A EP0914358A1 (en) | 1996-07-25 | 1997-07-25 | Thermoformable cast poly(methyl methacrylate) |
NZ333853A NZ333853A (en) | 1996-07-25 | 1997-07-25 | Thermoformable cast poly(methacrylate) containing a catalytic chain transfer agent which is a cobalt chelate or a derivative |
JP10508605A JP2000515200A (en) | 1996-07-25 | 1997-07-25 | Thermoformable cast poly (methyl methacrylate) |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9615607.0A GB9615607D0 (en) | 1996-07-25 | 1996-07-25 | Thermoformable cast poly(methyl methacrylate) |
GB9615607.0 | 1996-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998004603A1 true WO1998004603A1 (en) | 1998-02-05 |
Family
ID=10797475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1997/002020 WO1998004603A1 (en) | 1996-07-25 | 1997-07-25 | Thermoformable cast poly(methyl methacrylate) |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0914358A1 (en) |
JP (1) | JP2000515200A (en) |
AU (1) | AU740435B2 (en) |
CA (1) | CA2261159A1 (en) |
GB (1) | GB9615607D0 (en) |
NZ (1) | NZ333853A (en) |
WO (1) | WO1998004603A1 (en) |
ZA (1) | ZA976677B (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6646068B2 (en) | 1998-03-12 | 2003-11-11 | Lucite International Uk Limited | Polymer composition |
EP2436713A1 (en) | 2010-09-29 | 2012-04-04 | Sika Technology AG | Two-Part Polyurethanes based on Hyperbranched Polymers |
WO2013142354A1 (en) | 2012-03-22 | 2013-09-26 | The Regents Of The University Of Colorado | Water compatible nanogel compositions |
US9611337B2 (en) | 2011-01-27 | 2017-04-04 | Autonetworks Technologies, Ltd. | Chain transfer agent, photosensitive composition, cured product of photosensitive composition, and method for curing photosensitive composition |
WO2017223511A1 (en) | 2016-06-23 | 2017-12-28 | The Regents Of The University Of Colorado | Control of polymer network structures via nanogels |
WO2020197797A1 (en) | 2019-03-28 | 2020-10-01 | Rohm And Haas Company | Highly processable flexible acrylic resin |
WO2020197798A1 (en) | 2019-03-28 | 2020-10-01 | Rohm And Haas Company | Highly processable multi-stage flexible acrylic resins and process for making same |
WO2020263497A1 (en) | 2019-06-28 | 2020-12-30 | Rohm And Haas Company | Allylic functional thermoplastic additive for uv curable flexible acrylic resin clear films |
WO2020263496A1 (en) | 2019-06-28 | 2020-12-30 | Rohm And Haas Company | Reactive acrylic polyolefin blends |
WO2020263495A1 (en) | 2019-06-28 | 2020-12-30 | Rohm And Haas Company | Allylic functional thermoplastic additives for thermosetting polymers |
WO2021216392A1 (en) | 2020-04-21 | 2021-10-28 | Rohm And Haas Company | Melt flow additive for polycarbonates and other engineering resins |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002105126A (en) * | 2000-07-18 | 2002-04-10 | Soken Chem & Eng Co Ltd | Highly viscoelastic acrylic polymer resin, its use and its production method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4152506A (en) * | 1978-04-26 | 1979-05-01 | E. I. Du Pont De Nemours And Company | Preparation of thermoformable methyl methacrylate sheets |
US4694054A (en) * | 1985-03-01 | 1987-09-15 | E. I. Du Pont De Nemours And Company | Cobalt(II) chelates as chain transfer agents in free radical polymerizations |
-
1996
- 1996-07-25 GB GBGB9615607.0A patent/GB9615607D0/en active Pending
-
1997
- 1997-07-25 EP EP97933765A patent/EP0914358A1/en not_active Withdrawn
- 1997-07-25 CA CA002261159A patent/CA2261159A1/en not_active Abandoned
- 1997-07-25 ZA ZA9706677A patent/ZA976677B/en unknown
- 1997-07-25 JP JP10508605A patent/JP2000515200A/en active Pending
- 1997-07-25 AU AU37009/97A patent/AU740435B2/en not_active Ceased
- 1997-07-25 WO PCT/GB1997/002020 patent/WO1998004603A1/en not_active Application Discontinuation
- 1997-07-25 NZ NZ333853A patent/NZ333853A/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4152506A (en) * | 1978-04-26 | 1979-05-01 | E. I. Du Pont De Nemours And Company | Preparation of thermoformable methyl methacrylate sheets |
US4694054A (en) * | 1985-03-01 | 1987-09-15 | E. I. Du Pont De Nemours And Company | Cobalt(II) chelates as chain transfer agents in free radical polymerizations |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6646068B2 (en) | 1998-03-12 | 2003-11-11 | Lucite International Uk Limited | Polymer composition |
EP2436713A1 (en) | 2010-09-29 | 2012-04-04 | Sika Technology AG | Two-Part Polyurethanes based on Hyperbranched Polymers |
WO2012041951A1 (en) | 2010-09-29 | 2012-04-05 | Sika Technology Ag | Two-part polyurethanes based on hyperbranched polymers |
JP2013540177A (en) * | 2010-09-29 | 2013-10-31 | ジーカ テクノロジー アクチェンゲゼルシャフト | Two-component polyurethane based on hyperbranched polymer |
US9428669B2 (en) | 2010-09-29 | 2016-08-30 | Sika Technology Ag | Two-part polyurethanes based on hyperbranched polymers |
US9611337B2 (en) | 2011-01-27 | 2017-04-04 | Autonetworks Technologies, Ltd. | Chain transfer agent, photosensitive composition, cured product of photosensitive composition, and method for curing photosensitive composition |
WO2013142354A1 (en) | 2012-03-22 | 2013-09-26 | The Regents Of The University Of Colorado | Water compatible nanogel compositions |
WO2017223511A1 (en) | 2016-06-23 | 2017-12-28 | The Regents Of The University Of Colorado | Control of polymer network structures via nanogels |
WO2020197797A1 (en) | 2019-03-28 | 2020-10-01 | Rohm And Haas Company | Highly processable flexible acrylic resin |
WO2020197798A1 (en) | 2019-03-28 | 2020-10-01 | Rohm And Haas Company | Highly processable multi-stage flexible acrylic resins and process for making same |
US11814512B2 (en) | 2019-03-28 | 2023-11-14 | Rohm And Haas Company | Highly processable multi-stage flexible acrylic resins and process for making same |
WO2020263497A1 (en) | 2019-06-28 | 2020-12-30 | Rohm And Haas Company | Allylic functional thermoplastic additive for uv curable flexible acrylic resin clear films |
WO2020263496A1 (en) | 2019-06-28 | 2020-12-30 | Rohm And Haas Company | Reactive acrylic polyolefin blends |
WO2020263495A1 (en) | 2019-06-28 | 2020-12-30 | Rohm And Haas Company | Allylic functional thermoplastic additives for thermosetting polymers |
WO2021216392A1 (en) | 2020-04-21 | 2021-10-28 | Rohm And Haas Company | Melt flow additive for polycarbonates and other engineering resins |
Also Published As
Publication number | Publication date |
---|---|
ZA976677B (en) | 1998-12-27 |
CA2261159A1 (en) | 1998-02-05 |
AU740435B2 (en) | 2001-11-01 |
EP0914358A1 (en) | 1999-05-12 |
AU3700997A (en) | 1998-02-20 |
NZ333853A (en) | 2000-07-28 |
GB9615607D0 (en) | 1996-09-04 |
JP2000515200A (en) | 2000-11-14 |
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