Patent US4957980A successfully refreshed from Google Patents.
US4957980A
Expired / Lapsed
US
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Polyester resin composition and hollow molded article thereof
Assignee: Toyobo Co Ltd
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Filing: 1988-08-08
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Granted: 1990-09-18
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Expires: 2008-08-08
Abstract
Abstract A polyester resin composition having excellent gas barrier properties and transparency which comprises 100 parts by weight of a thermoplastic polyester resin (A), 1 to 100 parts by weight of a polyamide resin having metaxylylene group (B) and 0.01 to 50 parts by weight of a compatibilizing agent (C); and a polyester hollow molded article in the form of a single or multi-layered hollow molded article, wherein at least one of the layers is made of the above polyester resin composition.
Inventors
- 👤 Shigeo Kobayashi
- 👤 Toshio Hiramatsu
- 👤 Katsumasa Yamamoto
- 👤 Nobuhiko Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:47
CPC Classifications
C; C08; C08L; C08L67/00; C08L77/00; Y; Y10; Y10S; Y10S525/00; Y10S525/931; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A polyester resin composition which comprises 100 parts by weight of a thermoplastic polyester resin (A), 1 to 100 parts by weight of a polyamide resin having metaxylylene group (B) and 0.01 to 50 parts by weight of a compatibilizing agent (C), wherein the compatibilizing agent (C) is a modified copolyester resin obtained by grafting maleic anhydride to a copolyester of terephthalic acid, ethylene glycol and cyclohexane dimethanol.
Claim 2
Dependent Claim
68 words
A polyester resin composition which comprises 100 parts by weight of a thermoplastic polyester resin (A), 1 to 100 parts by weight of a polyamide resin having metaxylylene group (B) and 0.01 to 50 parts by weight of a compatibilizing agent (C), wherein the compatibilizing agent (C) is a modified copolyester resin obtained by grafting maleic anhydride to a copolyester of terephthalic acid, ethylene glycol and cyclohexane dimethanol.
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) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |