US4456732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic resin composition having improved weld strength
Assignee: DIC Corp
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Filing: 1983-06-10
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Granted: 1984-06-26
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Expires: 2003-06-10
Abstract
Abstract A thermoplastic resin composition having improved weld strength, said composition consisting essentially of (A) 45 to 94.9% by weight of polycarbonate resin, (B) 5 to 40% by weight of a rubber-modified styrene-maleic anhydride copolymer resin, and (C) 0.1 to 15% by weight of an epoxy resin and/or a phenoxy resin.
Inventors
- 👤 Junji Nambu
- 👤 Kenji Yoshino
- 👤 Nagao Ariga
- 👤 Kyotaro Shimazu
- 👤 Hiroyuki Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:41
CPC Classifications
C; C08; C08L; C08L69/00; Y; Y10; Y10S; Y10S525/00; Y10S525/93
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
A thermoplastic resin composition having improved weld strength, said composition consisting essentially of (A) 45 to 94.9% by weight of a polycarbonate resin, (B) 5 to 40% by weight of a rubber-modified styrene-maleic anhydride copolymer resin, and (C) 0.1 to 15% by weight of a bisphenol epoxy resin, a novolak epoxy resin, a phenoxy resin or a mixture thereof.
Claim 2
Dependent Claim
59 words
A thermoplastic resin composition having improved weld strength, said composition consisting essentially of (A) 45 to 94.9% by weight of a polycarbonate resin, (B) 5 to 40% by weight of a rubber-modified styrene-maleic anhydride copolymer resin, and (C) 0.1 to 15% by weight of a bisphenol epoxy resin, a novolak epoxy resin, a phenoxy resin or a mixture thereof.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the rubber-modified styrene-maleic anhydride copolymer resin (B) contains 2 to 25% by weight of a rubber component.
Claim 4
Dependent Claim
41 words
The composition of claim 1 wherein the resin (C) is a bisphenol-type epoxy resin represented by the general formula ##STR5## wherein R represents a hydrogen atom or a methyl group, and l is a rational number of from 0 to 200.
Claim 5
Dependent Claim
52 words
The composition of claim 1 wherein the resin (C) is a novolak-type epoxy resin represented by the general formula ##STR6## wherein R represents a hydrogen atom or a methyl group, R' represents an alkyl group having 1 to 9 carbon atoms, and m is a rational number of from 0 to 50.
Claim 6
Dependent Claim
42 words
The composition of claim 1 wherein the resin (C) is a resin having recurring structural units of the general formula ##STR7## wherein R represents a hydrogen atom or a methyl group, and n is a rational number of from 3 to 200.
Claim 7
Dependent Claim
58 words
A thermoplastic resin composition having improved weld strength, said composition consisting essentially of (A) 70 to 85% by weight of a polycarbonate resin, (B) 9 to 27% by weight of a rubber-modified styrene/maleic anhydride copolymer, and (C) 3 to 6% by weight of a bisphenol epoxy resin, a novolak epoxy resin, a phenoxy resin or a mixture thereof.
Claim 8
Dependent Claim
58 words
A thermoplastic resin composition having improved weld strength, said composition consisting essentially of (A) 70 to 85% by weight of a polycarbonate resin, (B) 9 to 27% by weight of a rubber-modified styrene/maleic anhydride copolymer, and (C) 3 to 6% by weight of a bisphenol epoxy resin, a novolak epoxy resin, a phenoxy resin or a mixture thereof.
Claim 9
Dependent Claim
22 words
The thermoplastic resin composition of claim 6 wherein the polycarbonate resin is an aromatic polycarbonate resin derived from an aromatic dihydroxy compound.
Claim 10
Dependent Claim
23 words
The thermoplastic resin composition according to claim 1 wherein the polycarbonate resin is an aromatic polycarbonate resin derived from an aromatic dihydroxy compound.
References Cited (Backward Citations)
US3480695A
Cited
US4351920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |