US4189549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester resin composition
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1977-06-29
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Granted: 1980-02-19
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Expires: 1997-06-29
Abstract
Abstract A polyester resin composition having excellent mechanical properties, processability, transparency and surface glossiness of the formed product thereof, which comprises 1 to 99% by weight of an aromatic polyester produced by polycondensing para-hydroxybenzoic acid or a functional derivative thereof (I), 2,2-bis(4'-hydroxyphenyl)propane or a functional derivative thereof (II), and terephthalic acid or a functional derivative thereof (III) and/or isophthalic acid or a functional derivative thereof (IV) in a molar ratio of (I):(II)=1:100 to 100:1 and (II):(III) and/or (IV)=1:10 to 10:1 and 99 to 1% by weight of a polycarbonate or an aliphatic polyester.
Inventors
- 👤 Hiroomi Matsunaga
- 👤 Yukikazu Uemura
- 👤 Teruo Saito
- 👤 Hiroshi Ishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:13
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/04; C08L69/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
185 words
A polyester resin composition comprising 1 to 99% by weight of an aromatic polyesyter produced by polycondensing para-hydroxybenzoic acid or a functional derivative thereof (I), 2,2-bis(4'-hydroxyphenyl)propane or a functional derivative thereof (II), a terephthalic acid or a functional derivative thereof (III) and/or isophthalic acid or a functional derivative thereof (IV) in a molar ratio of (I):(II)=1:100 to 100:1 and (II):(III) and/or (IV)=1:10 to 10:1, and 99 to 1% by weight of a 4,4-dihydroxydiarylalkane polycarbonate having an average molecular weight of 5,000 to 100,000 or a polyalkylene phenylene ester and/or a polyalkylene phenylene ester ether, said polyalkylene phenylene ester and polyalkylene phenylene ester ether having the following formula: ##STR4## wherein R 1 , R 2 , R 3 and R 4 are the same or different and are each hydrogen, an alkyl having 1 to 6 carbon atoms, a halogen, an alkoxy having 1 to 6 carbon atoms, an alkoxycarbonyl having 2 to 6 carbon atoms, cyano, amino, sulfonyl, nitro or phenoxy; X is a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms; Y is --COO-- or --O--; and n is 30 to 500.
Claim 2
Dependent Claim
185 words
A polyester resin composition comprising 1 to 99% by weight of an aromatic polyesyter produced by polycondensing para-hydroxybenzoic acid or a functional derivative thereof (I), 2,2-bis(4'-hydroxyphenyl)propane or a functional derivative thereof (II), a terephthalic acid or a functional derivative thereof (III) and/or isophthalic acid or a functional derivative thereof (IV) in a molar ratio of (I):(II)=1:100 to 100:1 and (II):(III) and/or (IV)=1:10 to 10:1, and 99 to 1% by weight of a 4,4-dihydroxydiarylalkane polycarbonate having an average molecular weight of 5,000 to 100,000 or a polyalkylene phenylene ester and/or a polyalkylene phenylene ester ether, said polyalkylene phenylene ester and polyalkylene phenylene ester ether having the following formula: ##STR4## wherein R 1 , R 2 , R 3 and R 4 are the same or different and are each hydrogen, an alkyl having 1 to 6 carbon atoms, a halogen, an alkoxy having 1 to 6 carbon atoms, an alkoxycarbonyl having 2 to 6 carbon atoms, cyano, amino, sulfonyl, nitro or phenoxy; X is a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms; Y is --COO-- or --O--; and n is 30 to 500.
Claim 3
Dependent Claim
34 words
The polyester resin composition according to claim 1, wherein the aromatic polyester is contained therein in the amount of 10 to 95% by weight on the basis of the total weight of the composition.
References Cited (Backward Citations)
GB951818A
Cited
GB1002545A
Cited
US3720732A
Cited
US3953539A
Cited
US3884990A
Cited
US3972852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |