US4096126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic copolyester elastomer
Assignee: Toray Industries Inc
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Filing: 1976-08-12
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Granted: 1978-06-20
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Expires: 1996-08-12
Abstract
Abstract A thermoplastic copolyester elastomer which comprises dicarboxylic acid component mainly composed of terephthalic and phthalic acids, wherein the molar ratio of terephthalic acid to phthalic acid is from about 80/20 to 35/65, and diol component mainly composed of 1,4-butanediol. The elastomer has excellent thermal stability and weatherability and can be improved in the elastomeric properties by orientation of polymer molecule before crystallization.
Inventors
- 👤 Chiaki Tanaka
- 👤 Shinobu Nakajima
- 👤 Masanobu Morikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:24
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
58 words
A thermoplastic copolyester elastomer derived from the reaction of a mixture comprising a dicarboxylic acid component, and a diol component, wherein the dicarboxylic acid component is mainly composed of terephthalic and phthalic acids in which the molar ratio of terephthalic acid to phthalic acids is about 80/20 to 35/65, and the diol component is mainly composed of 1,4-butanediol.
Claim 2
Dependent Claim
58 words
A thermoplastic copolyester elastomer derived from the reaction of a mixture comprising a dicarboxylic acid component, and a diol component, wherein the dicarboxylic acid component is mainly composed of terephthalic and phthalic acids in which the molar ratio of terephthalic acid to phthalic acids is about 80/20 to 35/65, and the diol component is mainly composed of 1,4-butanediol.
Claim 3
Dependent Claim
21 words
A thermoplastic copolyester elastomer according to claim 1, wherein the molar ratio of terephthalic/phthalic acids is about 70/30 to about 40/60.
Claim 4
Dependent Claim
12 words
An elastic fiber formed from a copolyester defined according to claim 1.
Claim 5
Dependent Claim
19 words
An elastic fiber according to claim 3, wherein the copolyester is oriented by drawing about 1.5 to 5 times.
Claim 6
Dependent Claim
12 words
An elastic film formed from a copolyester defined according to claim 1.
Claim 7
Dependent Claim
21 words
An elastic film according to claim 5, wherein the copolyester is uni-or biaxially oriented by drawing about 1.5 to 5 times.
Claim 8
Dependent Claim
65 words
A thermoplastic copolymer elastomer derived from the reaction of a mixture comprising (A) a dicarboxylic acid or a dicarboxylic acid functioning derivative consisting essentially of terephthalic acid and phthalic acid, wherein the molar ratio of terephthalic acid to phthalic acid is about 80/20 to 35/65, and (B) a diol component consisting essentially of 1,4-butanediol, said elastomer being oriented by drawing about 1.5 to 5 times.
Claim 9
Dependent Claim
65 words
A thermoplastic copolymer elastomer derived from the reaction of a mixture comprising (A) a dicarboxylic acid or a dicarboxylic acid functioning derivative consisting essentially of terephthalic acid and phthalic acid, wherein the molar ratio of terephthalic acid to phthalic acid is about 80/20 to 35/65, and (B) a diol component consisting essentially of 1,4-butanediol, said elastomer being oriented by drawing about 1.5 to 5 times.
References Cited (Backward Citations)
US2968065A
Cited
US3136677A
Cited
US3682863A
Cited
US3766146A
Cited
US3817935A
Cited
US3926920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |