Patent US4258143A successfully refreshed from Google Patents.
US4258143A
Expired / Lapsed
US
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Molding compositions
Assignee: Eastman Chemical Co
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Filing: 1979-07-05
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Granted: 1981-03-24
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Expires: 1999-07-05
Abstract
Abstract Disclosed are polymer compositions comprising from about 75 to about 99% by weight of the reaction product of (a) from about 50 to about 90% by weight, based on the weight of the reaction product, of an ethylenically unsaturated polyester derived from an α,β-ethylenically unsaturated dicarboxylic acid with a saturated aliphatic polyol, and (b) from about 50 to about 10% by weight, based on the weight of the reaction product, of a modified polyolefin derived from an α,β-ethylenically unsaturated dicarboxylic acid anhydride and a polyolefin. The compositions preferably include from about 25 to about 1% by weight of a polymer or copolymer of an olefin in the reaction product, the polymer or copolymer having a molecular weight of from about 500 to about 50,000.
Inventors
- 👤 John R. Dombroski
- 👤 Max F. Meyer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:42
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
85 words
Polymer composition comprising the reaction product of (a) from about 50 to about 85% by weight, based on the weight of said reaction product, of an ethylenically unsaturated polyester derived from an α,β-ethylenically unsaturated dicarboxylic acid with a saturated aliphatic polyol, and (b) from about 50 to about 15% by weight, based on the weight of said reaction product, of a modified polyolefin derived from an α,β-ethylenically unsaturated dicarboxylic acid anhydride and an aliphatic polyolefin selected from the group consisting of polyethylene, polypropylene and polybutylene.
Claim 2
Dependent Claim
85 words
Polymer composition comprising the reaction product of (a) from about 50 to about 85% by weight, based on the weight of said reaction product, of an ethylenically unsaturated polyester derived from an α,β-ethylenically unsaturated dicarboxylic acid with a saturated aliphatic polyol, and (b) from about 50 to about 15% by weight, based on the weight of said reaction product, of a modified polyolefin derived from an α,β-ethylenically unsaturated dicarboxylic acid anhydride and an aliphatic polyolefin selected from the group consisting of polyethylene, polypropylene and polybutylene.
Claim 3
Dependent Claim
33 words
Polymer composition according to claim 1 wherein said reaction product comprises from about 55 to about 85% of said ethylenically unsaturated polyester and from about 45 to about 15% of said modified polyolefin.
Claim 4
Dependent Claim
25 words
Polymer composition according to claim 1 wherein said ethylenically unsaturated polyester is derived at least in part from an acid selected from terephthalic and isophthalic.
Claim 5
Dependent Claim
28 words
Polymer composition according to claim 1 wherein said unsaturated polyester is derived at least in part from an acid component selected from maleic and fumaric acid or anhydride.
Claim 6
Dependent Claim
19 words
Polymer composition according to claim 1 wherein said ethylenically unsaturated polyester is derived at least in part from 2,2,4-trimethyl-1,3-pentanediol.
Claim 7
Dependent Claim
16 words
Polymer composition according to claim 1 wherein said modified polyolefin comprises maleated polyethylene or maleated polypropylene.
Claim 8
Dependent Claim
133 words
Polymer composition comprising I. from about 75 to about 99% by weight of the reaction product of (a) from about 50 to about 85% by weight, based on the weight of said reaction product, of an ethylenically unsaturated polyester derived from an α,β-ethylenically unsaturated dicarboxylic acid with a saturated aliphatic polyol, and (b) from about 50 to about 15% by weight, based on the weight of said reaction product, of a modified polyolefin derived from an α,β-ethylenically unsaturated dicarboxylic acid anhydride and an aliphatic polyolefin selected from the group consisting of polyethylene, polypropylene and polybutylene, and II. from about 25 to about 1% by weight of a polymer or copolymer of an olefin dispersed in said reaction product, said polymer or copolymer having a molecular weight of from about 500 to about 50,000.
Claim 9
Dependent Claim
133 words
Polymer composition comprising I. from about 75 to about 99% by weight of the reaction product of (a) from about 50 to about 85% by weight, based on the weight of said reaction product, of an ethylenically unsaturated polyester derived from an α,β-ethylenically unsaturated dicarboxylic acid with a saturated aliphatic polyol, and (b) from about 50 to about 15% by weight, based on the weight of said reaction product, of a modified polyolefin derived from an α,β-ethylenically unsaturated dicarboxylic acid anhydride and an aliphatic polyolefin selected from the group consisting of polyethylene, polypropylene and polybutylene, and II. from about 25 to about 1% by weight of a polymer or copolymer of an olefin dispersed in said reaction product, said polymer or copolymer having a molecular weight of from about 500 to about 50,000.
Claim 10
Dependent Claim
33 words
Polymer composition according to claim 7 wherein said reaction product comprises from about 55 to about 85% of said ethylenically unsaturated polyester and from about 45 to about 15% of said modified polyolefin.
Claim 11
Dependent Claim
25 words
Polymer composition according to claim 7 wherein said ethylenically unsaturated polyester is derived at least in part from an acid selected from terephthalic and isophthalic.
Claim 12
Dependent Claim
28 words
Polymer composition according to claim 7 wherein said unsaturated polyester is derived at least in part from an acid component selected from maleic and fumaric acid or anhydride.
Claim 13
Dependent Claim
19 words
Polymer composition according to claim 7 wherein said ethylenically unsaturated polyester is derived at least in part from 2,2,4-trimethyl-1,3-pentanediol.
Claim 14
Dependent Claim
16 words
Polymer composition according to claim 7 wherein said modified polyolefin comprises maleated polyethylene or maleated polypropylene.
Claim 15
Dependent Claim
16 words
Polymer composition according to claim 7 wherein said polymer or copolymer of an olefin is polyethylene.
Claim 16
Dependent Claim
16 words
Polymer composition according to claim 7 wherein said polymer or copolymer of an olefin is polypropylene.
Claim 17
Dependent Claim
31 words
Molding composition comprising the polymer composition of claim 1 combined with from about 10 to about 90%, based on the weight of the mixture, of an ethylenically unsaturated monomeric crosslinking agent.
Claim 18
Dependent Claim
15 words
Molding composition according to claim 15 wherein said crosslinking agent is styrene or substituted styrene.
Claim 19
Dependent Claim
31 words
Molding composition comprising the polymer composition of claim 7 combined with from about 10 to about 90%, based on the weight of the mixture, of an ethylenically unsaturated monomeric crosslinking agent.
Claim 20
Dependent Claim
15 words
Molding composition according to claim 17 wherein said crosslinking agent is styrene or substituted styrene.
Claim 21
Dependent Claim
15 words
An article of manufacture comprising the reaction product of the molding composition of claim 15.
Claim 22
Dependent Claim
15 words
An article of manufacture comprising the reaction product of the molding composition of claim 17.
Claim 23
Independent Claim
97 words
The method of preparing unsaturated polyester useful in shrinkage and corrosion resistant molding compositions comprising reacting an acid component containing at least one unsaturated acid with a glycol component until the acid number of the esterification mixture is between about 40 and about 60, adding a carboxylated aliphatic polyolefin selected from the group consisting of polyethylene, polypropylene, and polybutylene in an amount of between greater than about 10 and 50% any weight based on the weight of the polyester components, and continuing the esterification until an acid number of between about 25 and about 35 is reached.
Claim 24
Independent Claim
97 words
The method of preparing unsaturated polyester useful in shrinkage and corrosion resistant molding compositions comprising reacting an acid component containing at least one unsaturated acid with a glycol component until the acid number of the esterification mixture is between about 40 and about 60, adding a carboxylated aliphatic polyolefin selected from the group consisting of polyethylene, polypropylene, and polybutylene in an amount of between greater than about 10 and 50% any weight based on the weight of the polyester components, and continuing the esterification until an acid number of between about 25 and about 35 is reached.
Claim 25
Dependent Claim
29 words
The method according to claim 21 wherein the acid number of the esterification mixture at the time the carboxylated polyolefin is added is between about 43 and about 57.
Claim 26
Dependent Claim
16 words
The method according to claim 21 wherein said carboxylated polyolefin is maleated polyethylene or maleated polypropylene.
Claim 27
Independent Claim
136 words
The method of preparing an unsaturated polyester useful in shrinkage and corrosion resistant molding compositions comprising reacting an acid component containing terephthalic acid or isophthalic acid and an ethylenically unsaturated polycarboxylic acid and a glycol component at least part of which is 2,2,4-trimethyl-1,3-pentanediol until the acid number of the esterification mixture is between about 40 and about 60, adding a modified polyolefin selected from the group consisting of maleated polyethylene and maleated polypropylene in the amount of between greater than about 10% and about 50% based on the weight of the polyester components, continuing the esterification reaction until a generally homogeneous reaction product is obtained, and adding to the reaction product from about 1% to about 25% by weight of an olefin polymer or copolymer having a molecular weight of between about 500 and about 50,000.
Claim 28
Independent Claim
136 words
The method of preparing an unsaturated polyester useful in shrinkage and corrosion resistant molding compositions comprising reacting an acid component containing terephthalic acid or isophthalic acid and an ethylenically unsaturated polycarboxylic acid and a glycol component at least part of which is 2,2,4-trimethyl-1,3-pentanediol until the acid number of the esterification mixture is between about 40 and about 60, adding a modified polyolefin selected from the group consisting of maleated polyethylene and maleated polypropylene in the amount of between greater than about 10% and about 50% based on the weight of the polyester components, continuing the esterification reaction until a generally homogeneous reaction product is obtained, and adding to the reaction product from about 1% to about 25% by weight of an olefin polymer or copolymer having a molecular weight of between about 500 and about 50,000.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |