Patent US5049603A successfully refreshed from Google Patents.
US5049603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester resin composition and molded articles thereof
Assignee: Polyplastics Co Ltd
•
Filing: 1990-04-20
•
Granted: 1991-09-17
•
Expires: 2010-04-20
Abstract
Abstract The polyester comopsition is improved in properties at low and high temperatures and is prepared by mixing 100 parts by weight of a mixture comprising (A) 60 to 99 parts by weight of a crystalline thermoplastic polyester resin and (B) 1 to 40 parts by weight of a polyester elastomer with (C) 0.01 to 5 parts by weight of a bisoxazoline compound, (D) 0.01 to 5 parts by weight of a phosphorus compound represented by the general formula: ##STR1## wherein R 1 and R 2 may be the same or different from each other and are each a group selected from among alkyl, substituted alkyl, aryl, substituted aryl and alkoxy groups, and (E) 0.01 to 5 parts by weight of one or more antioxidants selected from among thio ether compounds and hindered phenol compounds.
Inventors
- 👤 Mitsuhiro Mochizuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/04; C08K5/13; C08K5/16; C08K5/34; C08K5/35; C08K5/353; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/527; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
165 words
A polyester resin composition prepared by mixing 100 parts by weight of a mixture comprising: (A) 60 to 99 parts by weight of a crystalline thermoplastic polyester resin and (B) 1 to 40 parts by weight of a polyester elastomer; and, per 100 parts by weight of (A) and (B), (C) 0.01 to 5 parts by weight of a bisoxazoline compound of the formula: ##STR9## wherein one or more of the hydrogen atoms may each be replaced by an alkyl or aryl group, R is a divalent organic group, and n is 0 or 1; (D) 0.01 to 5 parts by weight of a phosphorus compound represented by the general formula: ##STR10## wherein R 1 and R 2 may be the same or different from each other and are each a group selected from among alkyl, substituted alkyl, aryl and substituted aryl; and (E) 0.01 to 5 parts by weight of one or more antioxidants selected from among thio ether compounds and hindered phenol compounds.
Claim 2
Dependent Claim
165 words
A polyester resin composition prepared by mixing 100 parts by weight of a mixture comprising: (A) 60 to 99 parts by weight of a crystalline thermoplastic polyester resin and (B) 1 to 40 parts by weight of a polyester elastomer; and, per 100 parts by weight of (A) and (B), (C) 0.01 to 5 parts by weight of a bisoxazoline compound of the formula: ##STR9## wherein one or more of the hydrogen atoms may each be replaced by an alkyl or aryl group, R is a divalent organic group, and n is 0 or 1; (D) 0.01 to 5 parts by weight of a phosphorus compound represented by the general formula: ##STR10## wherein R 1 and R 2 may be the same or different from each other and are each a group selected from among alkyl, substituted alkyl, aryl and substituted aryl; and (E) 0.01 to 5 parts by weight of one or more antioxidants selected from among thio ether compounds and hindered phenol compounds.
Claim 3
Dependent Claim
21 words
The polyester resin composition as set forth in claim 1 wherein said crystalline thermoplastic polyester resin (A) comprises a polyalkylene terephthalate.
Claim 4
Dependent Claim
17 words
The polyester resin composition as set forth in claim 2 wherein said polyalkylene terephthalate is polybutylene terephthalate.
Claim 5
Dependent Claim
21 words
The polyester resin composition as st forth in claim 1 or 3 wherein the bisoxazoline compound (C) is m-phenylenebisoxazoline or p-phenylene-bisoxazoline.
Claim 6
Dependent Claim
46 words
The polyester resin composition as set forth in claim 1 wherein said crystalline thermoplastic polyester resin (A) is present in amounts of from 70 to 97 parts by weight an said polyester elastomer (B) is present in amounts of from 3 to 30 parts by weight.
Claim 7
Dependent Claim
22 words
The polyester resin composition as set forth in claim 1 wherein said R 1 and R 2 are aryl or substituted aryl.
Claim 8
Dependent Claim
30 words
A molded article for sue as a connector, switch or relay which is prepared by molding a polyester resin composition as set forth in either of claim 1 or 3.
Claim 9
Dependent Claim
26 words
A molded article for use as a connector, switch or relay which is prepared by molding a polyester resin composition as set forth in claim 4.
References Cited (Backward Citations)
JPS56120757A
Cited
JPS5792046A
Cited
US4499219A
Cited
US4385145A
Cited
JPS62230844A
Cited
JPS63113066A
Cited
JPS63118360A
Cited
JPS63248852A
Cited
JPS646054A
Cited
US4954541A
Cited
EP0323045A1
Cited
JPH02119011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |