US4795771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester composition
Assignee: Toyobo Co Ltd
•
Filing: 1987-02-24
•
Granted: 1989-01-03
•
Expires: 2007-02-24
Abstract
Abstract A polyester composition wich comprises (a) 100 parts by weight of a polyester containing at least 80 mol % of ethylene terephthalate repeating unit, (b) 1 to 15 parts by weight of a carboxylic acid ester of a polyalkylene glycol or its derivative, (c) 0.01 to 10 parts by weight of an epoxy compound having a polyoxyalkylene chain, and (d) 0.1 to 50 parts by weight of an inorganic filler.
Inventors
- 👤 Nori Yoshihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:01
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08L; C08L63/00; C08L67/00; C08L67/02; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
190 words
A polyester composition which comprises (a) 100 parts by weight of a polyester containing at least 80 mol % of ethylene terephthalate repeating unit; (b) 1 to 15 parts by weight of a carboxylic acid ester of a polyalkylene glycol or its derivative having the formula: ##STR3## wherein n is an integer from 2 to 30; R 1 is aliphatic or aromatic hydrocarbon group having 1 to 18 carbon atoms; R 2 is an aliphatic hydrocarbon group having 2 to 6 carbon atoms; and R 3 is an aliphatic or aromatic hydrocarbon group having 1 to 10 carbon atoms; (c) 0.01 to 10 parts by weight of a diepoxy or polyepoxy compound having a polyoxyalkylene chain which is ##STR4## wherein A is a glycidyl group, R is an aliphatic hydrocarbon group having 1 to 5 carbon atoms, and n is an integer of not less than 2, or polyglycidyl ether of glycerin-alkylene oxide adduct, neopentyl glycol-alkylene oxide adduct, or pentaerythritol-alkylene oxide adduct; (d) 0.1 to 50 parts by weight of an inorganic filler selected from the group consisting of talc and mica; and (e) a reinforcing amount of glass fiber.
Claim 2
Dependent Claim
190 words
A polyester composition which comprises (a) 100 parts by weight of a polyester containing at least 80 mol % of ethylene terephthalate repeating unit; (b) 1 to 15 parts by weight of a carboxylic acid ester of a polyalkylene glycol or its derivative having the formula: ##STR3## wherein n is an integer from 2 to 30; R 1 is aliphatic or aromatic hydrocarbon group having 1 to 18 carbon atoms; R 2 is an aliphatic hydrocarbon group having 2 to 6 carbon atoms; and R 3 is an aliphatic or aromatic hydrocarbon group having 1 to 10 carbon atoms; (c) 0.01 to 10 parts by weight of a diepoxy or polyepoxy compound having a polyoxyalkylene chain which is ##STR4## wherein A is a glycidyl group, R is an aliphatic hydrocarbon group having 1 to 5 carbon atoms, and n is an integer of not less than 2, or polyglycidyl ether of glycerin-alkylene oxide adduct, neopentyl glycol-alkylene oxide adduct, or pentaerythritol-alkylene oxide adduct; (d) 0.1 to 50 parts by weight of an inorganic filler selected from the group consisting of talc and mica; and (e) a reinforcing amount of glass fiber.
Claim 3
Dependent Claim
16 words
A polyester composition according to claim 1, wherein R 1 has 1 to 10 carbon atoms.
Claim 4
Dependent Claim
20 words
A polyester composition as recited in claim 1 wherein the diepoxy or polyepoxy compound is diglycidyl ether of polyethylene glycol.
Claim 5
Dependent Claim
28 words
A ployester composition as recited in claim 3, wherein the carboxylic acid ester of a polyalkylene glycol or its derivative is a carboxylic acid ester of polyethylene glycol.
Claim 6
Dependent Claim
23 words
A polyester composition as recited in claim 4, wherein the carboxylic acid ester of polyethylene glycol is dibenzoate or diacetate of polyethylene glycol.
Claim 7
Dependent Claim
21 words
A polyester composition as recited in claim 5, wherein the carboxylic acid ester of polyethylene glycol is dibenzoate of polyethylene glycol.
References Cited (Backward Citations)
US3410927A
Cited
US4215032A
Cited
US4371476A
Cited
US4357268A
Cited
US4551485A
Cited
US4666965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |