Patent US4775712A successfully refreshed from Google Patents.
US4775712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polyester resin composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1987-01-13
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Granted: 1988-10-04
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Expires: 2007-01-13
Abstract
Abstract A thermoplastic polyester resin composition capable of providing a molded article superior in impact resistance, heat resistance, cold resistance, and weather resistance, which comprises a blend of 10 to 80% by weight of a thermoplastic polyester (A), 5 to 55% by weight of a polyorganosiloxane-based graft copolymer (B) obtained by graft-polymerizing 95 to 10% by weight of at least one vinyl monomer onto 5 to 90% by weight of a polyorganosiloxane rubber which exhibits a degree of swelling of 3.0 to 15.0 measured in toluene at 25 DEG C. and contains a graft-linking agent, 5 to 55% by weight of a thermoplastic polyester elastomer (C), and 0 to 60% by weight of a filler (D), wherein the total amount of the components (A) to (D) is 100% by weight.
Inventors
- 👤 Isao Sasaki
- 👤 Akira Yanagase
- 👤 Masafumi Hongo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:01
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/08; C08L51/085; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A thermoplastic polyester resin composition comprising a blend of 10 to 80% by weight of a thermoplastic polyester (A), 5 to 55% by weight of a polyorganosiloxane-based graft copolymer (B) obtained by graft-polymerizing 95 to 10% by weight of at least one vinyl monomer onto 5 to 90% by weight of a polyorganosiloxane rubber, which rubber exhibits a degree of swelling of 3.0 to 15.0 measured in toluene at 25° C. and contains a graft-linking agent, wherein said graft-linking agent comprises a compound selected from the group consisting of: ##STR2## CH.sub.2 ═CH--Sir.sub.n.sup.1 O.sub.(3-n)/2 (II) and HS--CH.sub.2).sub.p SiR.sub.n.sup.1 O.sub.(3-n)/2 (III); wherein; R 1 denotes methyl, ethyl, propyl, or phenyl; R 2 denotes hydrogen or methyl; n denotes a number of 0, 1, or 2; and p denotes a number of 1 to 6, 5 to 55% by weight of a thermoplastic polyester elastomer (C), and 0 to 60% by weight of a filter (D), wherein the total amount of the components (A) to (D) is 100% by weight.
Claim 2
Dependent Claim
167 words
A thermoplastic polyester resin composition comprising a blend of 10 to 80% by weight of a thermoplastic polyester (A), 5 to 55% by weight of a polyorganosiloxane-based graft copolymer (B) obtained by graft-polymerizing 95 to 10% by weight of at least one vinyl monomer onto 5 to 90% by weight of a polyorganosiloxane rubber, which rubber exhibits a degree of swelling of 3.0 to 15.0 measured in toluene at 25° C. and contains a graft-linking agent, wherein said graft-linking agent comprises a compound selected from the group consisting of: ##STR2## CH.sub.2 ═CH--Sir.sub.n.sup.1 O.sub.(3-n)/2 (II) and HS--CH.sub.2).sub.p SiR.sub.n.sup.1 O.sub.(3-n)/2 (III); wherein; R 1 denotes methyl, ethyl, propyl, or phenyl; R 2 denotes hydrogen or methyl; n denotes a number of 0, 1, or 2; and p denotes a number of 1 to 6, 5 to 55% by weight of a thermoplastic polyester elastomer (C), and 0 to 60% by weight of a filter (D), wherein the total amount of the components (A) to (D) is 100% by weight.
Claim 3
Dependent Claim
65 words
The resin composition of claim 1, wherein the contents of thermoplastic polyester (A), polyorganosilane-based graft copolymer (B), thermoplastic polyester elastomer (C), and filler (D) are from 40 to 80% by weight, from 10 to 40% by weight, from 5 to 40% by weight, and from 0 to 60% by weight, respectively, and the total amount of the components (A) to (D) is 100% by weight.
Claim 4
Dependent Claim
18 words
The resin composition of claim 1 or 2, wherein the thermoplastic polyester is polyethylene terephthalate or polytetramethylene terephthalate.
Claim 5
Dependent Claim
60 words
The resin composition of claim 1 or 2, wherein the graft-linking agent is an organosiloxane compound capable of forming a unit represented by the formula (I) ##STR3## wherein; R 1 denotes methyl, ethyl, propyl, or phenyl; R 2 denotes hydrogen or methyl; n denotes a number of 0, 1, or 2; and p denotes a number of 1 to 6.
Claim 6
Dependent Claim
30 words
The resin composition of claim 4, wherein the graft-linking agent is an organosilane compound capable of forming a unit represented by the formula (I) in which R 2 is methyl.
Claim 7
Dependent Claim
39 words
The resin composition of claim 1 or 2, wherein the thermoplastic polyester elastomer is a block copolymer obtained from the block copolymerization of polytetramethylene terephthalate as a hard segment component and polytetramethylene ether glycol as a soft segment component.
References Cited (Backward Citations)
US4013613A
Cited
FR2376189A1
Cited
US4337192A
Cited
US4443581A
Cited
EP0142336A1
Cited
US4661546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |