Patent EP0339666A2 successfully refreshed from Google Patents.
EP0339666A2
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EP
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Curable polymer composition
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1989-04-28
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Granted: —
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Expires: 2009-04-28
Abstract
Abstract A curable polymer composition which comprises: (A) a copolymer comprising a backbone which comprises (1) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having 1 to 8 carbon atoms in the alkyl group and alkyl methacrylates having 1 to 8 carbon atoms in the alkyl group and (2) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having at least 10 carbon atoms in the alkyl group and alkyl methacrylate having at least 10 carbon atoms in the alkyl groups and (B) an oxyalkylene base polymer having at least one silicon-containing group to the silicon atom of which at least one hydroxyl group or hydrolyzable group is bonded and which is cross linkable through formation of a siloxane bond, which composition has improved transparency and storage stability and can provide a cured material having good weather resistance.
Inventors
- 👤 Shintaro Kohmitsu
- 👤 Hiroshi Wakabayashi
- 👤 Toshifumi Hirose
- 👤 Katsuhiko Isayama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:59
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/336; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A curable polymer composition which comprises: (A) a copolymer comprising a backbone which comprises (1) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having 1 to 8 carbon atoms in the alkyl group and alkyl methacrylates having 1 to 8 carbon atoms in the alkyl group and (2) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having at least 10 carbon atoms in the alkyl group and alkyl methacrylate having at least 10 carbon atoms in the alkyl groups and (B) an oxyalkylene base polymer having at least one silicon-containing group to the silicon atom of which at least one hydroxyl group or hydrolyzable group is bonded and which is cross linkable through formation of a siloxane bond.
Claim 2
Dependent Claim
134 words
A curable polymer composition which comprises: (A) a copolymer comprising a backbone which comprises (1) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having 1 to 8 carbon atoms in the alkyl group and alkyl methacrylates having 1 to 8 carbon atoms in the alkyl group and (2) repeating units derived from at least one monomer selected from the group consisting of alkyl acrylates having at least 10 carbon atoms in the alkyl group and alkyl methacrylate having at least 10 carbon atoms in the alkyl groups and (B) an oxyalkylene base polymer having at least one silicon-containing group to the silicon atom of which at least one hydroxyl group or hydrolyzable group is bonded and which is cross linkable through formation of a siloxane bond.
Claim 3
Dependent Claim
114 words
The curable polymer composition according to claim 1, wherein the repeating unit derived from the alkyl (meth)acrylate having 1 to 8 carbon atoms in the alkyl group which constitutes the backbone of the copolymer (A) is represented by the formula: wherein R¹ is an alkyl group having 1 to 8 carbon atoms and R² is a hydrogen atom or a methyl group, and the repeating unit derived from the alkyl (meth)acrylate having at least 10 carbon atoms in the alkyl group which constitutes the backbone of the copolymer (A) is represented by the formula: wherein R² is the same as defined above and R³ is an alkyl group having at least 10 carbon atoms.
Claim 4
Dependent Claim
22 words
The curable polymer composition according to claim 1, wherein the copolymer (A) has a number average molecular weight of 500 to 100,000.
Claim 5
Dependent Claim
34 words
The curable polymer composition according to claim 1, wherein the oxyalkylene base polymer (B) has a backbone which essentially consists of repeating units of the formula: -R⁴-O- wherein R⁴ is a divalent organic group.
Claim 6
Dependent Claim
194 words
The curable polymer composition according to claim 1, wherein the silicon-containing group to the silicon atom of which at least one hydroxyl group or hydrolyzable group is bonded and which is cross linkable through formation of a siloxane bond is a group represented by the formula: wherein X is a hydroxyl group or a hydrolyzable group provided that when two or more X groups are present, they may be the same or different, R⁵ is a monovalent hydrocarbon group having 1 to 20 carbon atoms or a triorganosiloxy group of the formula: R′₃Si-O- in which R′ is a monovalent hydrocarbon group having 1 to 20 carbon atoms provided that three R′ groups may be the same or different and that when two or more R⁵ groups are present, they may be the same or different, "a" is 0, 1, 2 or 3, "b" is 0, 1 or 2 provided that the sum of "a" and "mb" is at least 1, preferably from 1 to 4, and "m" is 0 or an integer of 1 to 18 provided that when "m" is not less than 2, the bracketed groups may be the same or different.
Claim 7
Dependent Claim
24 words
The curable polymer composition according to claim 1, wherein the oxyalkylene base polymer (B) has a number average molecular weight of 500 to 30,000.
Claim 8
Dependent Claim
35 words
The curable polymer composition according to claim 1, wherein the oxyalkylene base polymer (B) is contained in an amount of 5 to 5,000 parts by weight per 100 parts by weight of the copolymer (A).
References Cited (Backward Citations)
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