US4327199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic crystalline polyester modified acrylic copolymer rubber
Assignee: Advanced Elastomer Systems LP
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Filing: 1981-01-19
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Granted: 1982-04-27
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Expires: 2001-01-19
Abstract
Abstract Thermoplastic compositions are described comprising neutralized acrylic copolymer rubber reinforced by thermoplastic crystalline polyester which compositions exhibit improved high temperature properties.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:32
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L67/00; C08L67/02; Y; Y10; Y10S; Y10S525/00; Y10S525/919
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
46 words
A thermoplastic composition comprising a blend of about 25 to 98 parts by weight of neutralized acid containing acrylic copolymer rubber, and about 75 to 2 parts by weight of thermoplastic crystalline polyester per 100 parts by weight of said rubber and thermoplastic crystalline polyester combined.
Claim 2
Dependent Claim
46 words
A thermoplastic composition comprising a blend of about 25 to 98 parts by weight of neutralized acid containing acrylic copolymer rubber, and about 75 to 2 parts by weight of thermoplastic crystalline polyester per 100 parts by weight of said rubber and thermoplastic crystalline polyester combined.
Claim 3
Dependent Claim
23 words
The composition of claim 1 having a flow temperature of at least 10° C. above the flow temperature of the thermoplastic crystalline polyester.
Claim 4
Dependent Claim
18 words
The composition of claim 2 in which the thermoplastic crystalline polyester has a melting point between 160°-260° C.
Claim 5
Dependent Claim
13 words
The composition of claim 3 in which the thermoplastic crystalline polyester is poly(tetramethyleneterephthalate).
Claim 6
Dependent Claim
71 words
An elastoplastic composition comprising a blend of neutralized acid containing acrylic copolymer rubber, in an amount sufficient to impart rubberlike elasticity up to 98 weight percent of the composition, and thermoplastic crystalline polyester, in an amount up to 50 weight percent of the composition, with the proviso that when the amount of thermoplastic crystalline polyester exceeds the amount of rubber, sufficient plasticizer is present to impart rubberlike elasticity to the composition.
Claim 7
Dependent Claim
71 words
An elastoplastic composition comprising a blend of neutralized acid containing acrylic copolymer rubber, in an amount sufficient to impart rubberlike elasticity up to 98 weight percent of the composition, and thermoplastic crystalline polyester, in an amount up to 50 weight percent of the composition, with the proviso that when the amount of thermoplastic crystalline polyester exceeds the amount of rubber, sufficient plasticizer is present to impart rubberlike elasticity to the composition.
Claim 8
Dependent Claim
45 words
The composition of claim 5 comprising 98 to 50 parts by weight of metal ion neutralized acid containing acrylic copolymer rubber and 2 to 50 parts by weight of thermoplastic crystalline polyester per 100 parts by weight of said rubber and thermoplastic crystalline polyester combined.
Claim 9
Dependent Claim
40 words
The composition of claim 6 comprising metal ion neutralized acid containing acrylic copolymer rubber and about 10 to 40 parts by weight percent of thermoplastic crystalline polyester per 100 parts by weight of said rubber and thermoplastic crystalline polyester combined.
Claim 10
Dependent Claim
20 words
The composition of claim 7 in which the rubber is a copolymer of ethylene, alkyl acrylate and unsaturated carboxylic acid.
Claim 11
Dependent Claim
38 words
The composition of claim 8 in which the rubber comprises at least 50 mole percent of ethylene, about 0.5 to 10 mole percent of acrylic or methacrylic acid, and up to about 49.5 mole percent of alkyl acrylate.
Claim 12
Dependent Claim
16 words
The composition of claim 9 in which the thermoplastic crystalline polyester melts at about 160°-260° C.
Claim 13
Dependent Claim
16 words
The composition of claim 10 in which the source of metal ion is a metal oxide.
Claim 14
Dependent Claim
17 words
The composition of claim 11 in which the rubber is neutralized with magnesium ion or zinc ion.
Claim 15
Dependent Claim
37 words
The composition of claim 12 comprising a copolymer rubber containing about 1 to 5 weight percent of acrylic acid and about 0.5 to 4 parts by weight of metal oxide per 100 parts by weight of rubber.
Claim 16
Dependent Claim
13 words
The composition of claim 13 in which the thermoplastic crystalline polyester is poly(tetramethyleneterephthalate).
Claim 17
Dependent Claim
13 words
The composition of claim 14 in which the metal oxide is magnesium oxide.
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) | 1985-04-26 | 1985-10-26 | 1986-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-26 | 1989-10-26 | 1990-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-26 | 1993-10-26 | 1994-04-27 | $7700.00 | Window Closed / Lapsed |