Patent US4045514A successfully refreshed from Google Patents.
US4045514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic resin composition comprising methyl methacrylate resins and a polycarbonate
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1976-01-30
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Granted: 1977-08-30
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Expires: 1996-01-30
Abstract
Abstract A thermoplastic resin composition consists essentially of from 10 to 95 parts by weight of a methyl methacrylate resin and from 90 to 5 parts by weight of a styrene-methyl methacrylate copolymer resin with or without from 5 to 150 parts by weight of a polycarbonate resin. A molded product from the composition has a beautiful, pearlescent luster and a high impact strength.
Inventors
- 👤 Shunji Iwahashi
- 👤 Fukuichi Morizane
- 👤 Yasuyuki Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:39
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/14; C08L69/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
A thermoplastic resin composition which consists essentially of from 10 to 95 parts by weight of a methyl methacrylate resin containing at least 80% by weight of methyl methacrylate, from 90 to 5 parts by weight of a styrene-methyl methacrylate copolymer resin having a weight ratio of styrene/methyl methacrylate of from 80/20 to 70/30 and a reduced viscosity of from 0.5 to 3.5 dl/g in a 1% chloroform solution at 25° C. and a polycarbonate resin, the polycarbonate resin being present in an amount of from 5 to 150 parts by weight per 100 parts by weight of the methyl methacrylate resin and the styrene-methyl methacrylate copolymer resin.
Claim 2
Dependent Claim
108 words
A thermoplastic resin composition which consists essentially of from 10 to 95 parts by weight of a methyl methacrylate resin containing at least 80% by weight of methyl methacrylate, from 90 to 5 parts by weight of a styrene-methyl methacrylate copolymer resin having a weight ratio of styrene/methyl methacrylate of from 80/20 to 70/30 and a reduced viscosity of from 0.5 to 3.5 dl/g in a 1% chloroform solution at 25° C. and a polycarbonate resin, the polycarbonate resin being present in an amount of from 5 to 150 parts by weight per 100 parts by weight of the methyl methacrylate resin and the styrene-methyl methacrylate copolymer resin.
Claim 3
Dependent Claim
44 words
A composition according to claim 1, wherein the methyl methacrylate resin is a homopolymer of methyl methacrylate or a copolymer of not less than 80% by weight of methyl methacrylate with acrylonitrile, N-allylmaleimide, methyl acrylate, ethyl acrylate, butyl acrylate, ethyl methacrylate or butyl acrylate.
Claim 4
Dependent Claim
45 words
A composition according to claim 2, wherein the styrene-methyl methacrylate copolymer resin is the one having a weight ratio of styrene/methyl methacrylate of from 70/30 to 35/65, and a reduced viscosity of from 0.6 to 3.0 dl/g in a 1% chloroform solution at 25° C.
Claim 5
Dependent Claim
23 words
A composition according to claim 2, wherein the polycarbonate resin is the one obtained from 4,4'-dihydroxydiphenylalkane and phosgene, ethyl formate or diethyl carbonate.
Claim 6
Dependent Claim
24 words
A molded product having a beautiful, pearlescent luster and a high impact strength obtained from the thermoplastic resin composition as claimed in claim 1.
Claim 7
Dependent Claim
27 words
A composition according to claim 1, wherein the methyl methacrylate resin is a homopolymer of methyl methacrylate or a copolymer of methyl methacrylate with a vinyl monomer.
Claim 8
Dependent Claim
14 words
A composition according to claim 1, wherein said methyl methacrylate resin is a homopolymer.
Claim 9
Dependent Claim
16 words
A composition according to claim 1, wherein said methyl methacrylate resin contains about 97% methyl methacrylate.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |