US4299929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic resin composition excellent in dwelling thermal stability
Assignee: Sumika Polycarbonate Ltd
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Filing: 1980-07-15
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Granted: 1981-11-10
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Expires: 2000-07-15
Abstract
Abstract A thermoplastic resin composition with excellent dwelling thermal stability which comprises 100 parts by weight of a resin composition comprising a polymer (A) obtained by polymerization of at least two kinds of monomers selected from the group consisting of aromatic vinyl compounds, vinyl cyanide compounds and carboxylic acid alkyl esters in the presence of a conjugated diene rubber and a polycarbonate resin (B) in a weight proportion of from 10:90 to 90:10 and 0.05 to 5.0 parts by weight of at least one acid compound (C) chosen from inorganic acids, organic acids and organic acid anhydrides.
Inventors
- 👤 Hajime Sakano
- 👤 Mikio Kodama
- 👤 Akitoshi Ito
- 👤 Miyuki Terada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:37
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08K; C08K3/00; C08K3/18; C08K3/24; C08K5/00; C08K5/04; C08K5/09; C08L53/00; C08L53/02; C08L69/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A thermoplastic resin composition with excellent dwelling thermal stability which comprises 100 parts by weight of a resin composition comprising a polymer (A) obtained by polymerization of at least two kinds of monomers selected from the group consisting of aromatic vinyl compounds, vinyl cyanide compounds and carboxylic acid alkyl esters in the presence of a conjugated diene rubber and a polycarbonate resin (B) in a weight proportion of from 10:90 to 90:10 and 0.05 to 5.0 parts by weight of at least one acid compound (C) chosen from inorganic acids, organic acids, maleic anhydride and phthalic anhydride.
Claim 2
Dependent Claim
97 words
A thermoplastic resin composition with excellent dwelling thermal stability which comprises 100 parts by weight of a resin composition comprising a polymer (A) obtained by polymerization of at least two kinds of monomers selected from the group consisting of aromatic vinyl compounds, vinyl cyanide compounds and carboxylic acid alkyl esters in the presence of a conjugated diene rubber and a polycarbonate resin (B) in a weight proportion of from 10:90 to 90:10 and 0.05 to 5.0 parts by weight of at least one acid compound (C) chosen from inorganic acids, organic acids, maleic anhydride and phthalic anhydride.
Claim 3
Dependent Claim
38 words
The thermoplastic resin composition according to claim 1 wherein the acid compound (C) is an inorganic acid selected from the group consisting of hydrochloric acid, sulfuric acid, nitric acid, phosphorous acid, phosphoric acid, carbonic acid or mixture thereof.
Claim 4
Dependent Claim
45 words
The thermoplastic resin composition according to claim 1, wherein the acid compound (C) is a organic acid selected from the group consisting of mono or dicarboxylic acids having not more than 21 carbon atoms, a sulfonic acid, a sulfinic acid, a phenol or mixture thereof.
Claim 5
Dependent Claim
21 words
The thermoplastic resin composition according to claim 1, wherein the acid compound (C) is maleic anhydride, phthalic anhydride or mixtures thereof.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |