EP0242027A2
Expired / Lapsed
EP
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Block copolymers comprising rubber and polyester segments, method of preparation
Assignee: Takemoto Oil and Fat Co Ltd
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Filing: 1987-02-16
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Granted: —
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Expires: 2007-02-16
Abstract
Abstract Block copolymers comprising a liquid rubber component substituted by at least one polyester grouping, and functional derivatives thereof are advantageous additives for synthetic resins. A method for the production of the said copolymers comprises reacting a liquid rubber having one or more reactive hydrogen atoms within its molecule with at least one organic dicarboxylic anhydride and one or more species of 1,2-epoxide in the presence of catalyst.
Inventors
- 👤 Mitsuo Kinoshita
- 👤 Shigeru Imamura
- 👤 Hirokazu Matsueda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 20:46
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/02; C08G63/12; C08G63/40
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
18 words
A block copolymer comprising a liquid rubber substituted with at least one polyester grouping, and functional derivatives thereof.
Claim 2
Dependent Claim
18 words
A block copolymer comprising a liquid rubber substituted with at least one polyester grouping, and functional derivatives thereof.
Claim 3
Dependent Claim
22 words
A block copolymer according to claim 1, wherein the polyester grouping is derived from reaction between a dicarboxylic anhydride and an epoxide.
Claim 4
Dependent Claim
143 words
A block copolymer according to either of claims 1 and 2, which has the formula (I) wherein M is substantially all or part of a molecule of a liquid rubber; X is oxygen, sulphur, imino, amino, C 1-8 alkyl-substituted amino or the group wherein R²-R⁵ are as defined below; R¹ is C 1-8 straight, branched or cyclo-alkylene or C 2-8 straight, branched or cyclo-alkenylene, optionally substituted by hydroxy, amino, C 1-4 alkyl, C 1-4 alkoxy or any combination thereof, or is a C 6-10 delocalised ring system, optionally substituted as above, and is the same or different in each repeat unit; R²-R⁵ are the same or different and are hydrogen or C 1-4 alkyl and are the same or different in each repeat unit; n and p are positive integers; R⁶ is hydrogen or wherein R¹ is as defined; and functional derivatives thereof.
Claim 5
Dependent Claim
14 words
A block copolymer according to claim 3 wherein the liquid rubber is a polydiene.
Claim 6
Dependent Claim
18 words
A block copolymer according to claim 4 wherein the liquid rubber is a homopolymer of polybutadiene or polyisoprene.
Claim 7
Dependent Claim
19 words
A block copolymer according to any of the preceding claims wherein the functional derivatives are salts, esters or amides.
Claim 8
Dependent Claim
19 words
A block copolymer according to any of claims 3 to 6 wherein at least 2 of R²-R⁵ are hydrogen.
Claim 9
Dependent Claim
21 words
A block copolymer according to claim 7 wherein one of R²-R⁵ is hydrogen methyl or ethyl and the remainder are hydrogen.
Claim 10
Dependent Claim
22 words
A block copolymer according to any of claims 3 to 8 wherein R¹ is methylene, ethenylene, 1,2-dihydroxyethylene, benzylene, cyclohexylene, cyclohexenylene or cyclohexenylmethylene.
Claim 11
Dependent Claim
15 words
A block copolymer according to any of claims 3 to 9 wherein X is oxygen.
Claim 12
Dependent Claim
28 words
A block copolymer according to any of the preceding claims wherein the free ends of the polyester groupings are substituted with a vinyl, epoxy, isocyanate or amino group.
Claim 13
Dependent Claim
28 words
A block copolymer according to any of claims 1 to 10 wherein the ends of the polyester groups are blocked by an ester, ether, amide or methane group.
Claim 14
Dependent Claim
26 words
A block copolymer according to any of claims 1 to 10 wherein more than 25% the free ends of the polyester groups are carboxyl or hydroxyl.
Claim 15
Dependent Claim
27 words
A block copolymer according to any of claims 1 to 13 wherein the weight ratio of said liquid rubber: said polyester portions is between 5% and 95%.
Claim 16
Dependent Claim
16 words
A block copolymer according to claim 14 wherein the said ratio is between 40% and 90%.
Claim 17
Dependent Claim
16 words
An additive for synthetic resins comprising a block copolymer according to any of the preceding claims.
Claim 18
Dependent Claim
20 words
An additive according to claim 16 as dependant on claim 14 wherein the said ratio is between 10% and 95%.
Claim 19
Dependent Claim
44 words
A method of producing block copolymer according to claim 1, comprising reacting a liquid rubber having one or more reactive hydrogen atoms within its molecule with at least one organic dicarboxylic anhydride and one or more species of 1,2-epoxide in the presence of catalyst.
Claim 20
Dependent Claim
21 words
A method according to claim 18 wherein the said hydrogen atom is provided by a hydroxyl group or a carboxyl group.
Claim 21
Independent Claim
24 words
A method according to either of claims 18 and 19 wherein the said catalyst is lithium halide or a tetra-C 1-4 alkyl ammoniun salt.
References Cited (Backward Citations)
No citation records indexed.
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