Patent US3575947A successfully refreshed from Google Patents.
Patent US4438229A successfully refreshed from Google Patents.
US4438229A
Expired / Lapsed
US
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Thermoplastic composition
Assignee: Honda Motor Co Ltd
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Filing: 1982-09-08
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Granted: 1984-03-20
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Expires: 2002-09-08
Abstract
Abstract A thermoplastic composition which comprises a blend comprising 20 to 80% by weight of a polycarbonate resin and 80 to 20% by weight of a graft polymer obtained by grafting at least one aromatic vinyl compound and at least one of vinyl cyanides and alkyl unsaturated carboxylates onto a conjugated diene rubber or its mixture with a copolymer of at least one aromatic vinyl compound and at least one of vinyl cyanides and alky unsaturated carboxylates in an amount of not more than 90% by weight on the basis of the combined amount of the graft polymer and the copolymer, and a polyolefin or a plasticizer having a light transmission of not less than 70% when determined on the film of 20 microns in thickness prepared by the use of a solution of the plasticizer (0.25 g) and acrylonitrile-styrene copolymer (weight ratio of acrylonitrile and styrene, 30:70; 0.75 g) in acetone (10 ml), the weight proportion of the blend and the polyolefin or the plasticizer being 100:0.2-20. The resulting composition is excellent in solvent resistance, welding strength, impact resistance, molding property, etc.
Inventors
- 👤 Yoshitugu Fujimori
- 👤 Yasuo Takabori
- 👤 Hajime Sakano
- 👤 Akitoshi Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:47
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L69/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
207 words
A thermoplastic composition having improved weld strength which comprises a blend essentially consisting of: (A) 20 to 80% by weight based on the weight of A and B of a thermoplastic polycarbonate resin; (B) 80 to 20% by weight based on the weight of A and B of a graft polymer obtained by grafting at least one aromatic vinyl compound and at least one member of the group consisting of vinyl cyanides and alkyl unsaturated carboxylates onto a conjugated diene rubber or a mixture of a conjugated diene rubber with a copolymer of at least one aromatic vinyl compound and at least one member of the group consisting of vinyl cyanides and alkyl unsaturated carboxylates, the copolymer being present in an amount of not more than 90% by weight on the basis of the combined amount of the graft polymer and the copolymer; and (C) a polyolefin or a plasticizer having a light transmission of not less than 70% when determined on a 20 micron film prepared from a solution of the plasticizer (0.25 g) and acrylonitrile-styrene copolymer (weight ratio of acrylonitrile and styrene, 30:70; 0.75 g) in acetone (10 ml), the weight proportion of the blend, (A)+(B), and the polyolefin or the plasticizer (C) being 100:0.2-20.
Claim 2
Dependent Claim
207 words
A thermoplastic composition having improved weld strength which comprises a blend essentially consisting of: (A) 20 to 80% by weight based on the weight of A and B of a thermoplastic polycarbonate resin; (B) 80 to 20% by weight based on the weight of A and B of a graft polymer obtained by grafting at least one aromatic vinyl compound and at least one member of the group consisting of vinyl cyanides and alkyl unsaturated carboxylates onto a conjugated diene rubber or a mixture of a conjugated diene rubber with a copolymer of at least one aromatic vinyl compound and at least one member of the group consisting of vinyl cyanides and alkyl unsaturated carboxylates, the copolymer being present in an amount of not more than 90% by weight on the basis of the combined amount of the graft polymer and the copolymer; and (C) a polyolefin or a plasticizer having a light transmission of not less than 70% when determined on a 20 micron film prepared from a solution of the plasticizer (0.25 g) and acrylonitrile-styrene copolymer (weight ratio of acrylonitrile and styrene, 30:70; 0.75 g) in acetone (10 ml), the weight proportion of the blend, (A)+(B), and the polyolefin or the plasticizer (C) being 100:0.2-20.
Claim 3
Dependent Claim
16 words
The composition according to claim 1, wherein the blend comprises the polycarbonate and the graft polymer.
Claim 4
Dependent Claim
28 words
The composition according to claim 2, wherein the polyolefin is contained in an amount of 0.2 to 10 parts by weight based on 100 parts of the blend.
Claim 5
Dependent Claim
34 words
The composition according to claim 3, wherein the polyolefin comprises polyethylene having a molecular weight of not less than 2,000 or polypropylene having a molecular weight of not less than 5,000, or their mixture.
Claim 6
Dependent Claim
19 words
The composition according to claim 1, wherein the blend comprises the polycarbonate resin, the graft polymer and the copolymer.
Claim 7
Dependent Claim
28 words
The composition according to claim 5, wherein the plasticizer is contained in an amount of 0.5 to 20 parts by weight based on 100 parts of the blend.
Claim 8
Dependent Claim
20 words
The composition according to claim 6, wherein the plasticizer comprises an ester compound, an epoxy compound or a phosphate compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |