Patent US3978158A successfully refreshed from Google Patents.
US3978158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic resin compositions
Assignee: Mitsubishi Gas Chemical Co Inc
•
Filing: 1974-02-26
•
Granted: 1976-08-31
•
Expires: 1994-02-26
Abstract
Abstract A thermoplastic resin composition having excellent mechanical and thermal properties as well as excellent moldability comprising a bis(hydroxyaryl)alkanic polycarbonate and a rubber-modified polychlorostyrenic resin prepared by latex-blending a chlorostyrenic graft polymer latex and a chlorostyrenic copolymer latex.
Inventors
- 👤 Eiichi Yonemitsu
- 👤 Seiichi Kamiyama
- 👤 Toshiaki Kanada
- 👤 Takeshi Hattori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:08
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/18; C08L51/00; C08L51/04; C08L69/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A thermoplastic resin composition comprising (A) a bis(hydroxyaryl)alkanic polycarbonate and (B) a rubber-modified polychlorostyrenic resin; said resin (B) having been prepared by latex-blending (a) a graft polymer latex having been prepared by emulsion-polymerizing (a) 20 to 70 parts by weight of a vinylic monomer mixture comprising mainly chlorostyrene and further a vinyl cyanide in the presence of (b) 80 to 30 parts by weight of a rubber constituent derived from a conjugated dienic monomer, and (2) a copolymer latex having been prepared by emulsion-polymerizing a vinylic monomer mixture comprising mainly chlorostyrene and a vinyl cyanide; said resin (B) containing 1 to 15% by weight polymer structure derived from conjugated dienic monomer (b), 43 to 94% by weight polymer structure derived from chlorostyrene and 5 to 25% by weight polymer structure derived from a vinyl cyanide.
Claim 2
Dependent Claim
135 words
A thermoplastic resin composition comprising (A) a bis(hydroxyaryl)alkanic polycarbonate and (B) a rubber-modified polychlorostyrenic resin; said resin (B) having been prepared by latex-blending (a) a graft polymer latex having been prepared by emulsion-polymerizing (a) 20 to 70 parts by weight of a vinylic monomer mixture comprising mainly chlorostyrene and further a vinyl cyanide in the presence of (b) 80 to 30 parts by weight of a rubber constituent derived from a conjugated dienic monomer, and (2) a copolymer latex having been prepared by emulsion-polymerizing a vinylic monomer mixture comprising mainly chlorostyrene and a vinyl cyanide; said resin (B) containing 1 to 15% by weight polymer structure derived from conjugated dienic monomer (b), 43 to 94% by weight polymer structure derived from chlorostyrene and 5 to 25% by weight polymer structure derived from a vinyl cyanide.
Claim 3
Dependent Claim
17 words
The thermoplastic resin composition as claimed in claim 1 wherein said vinyl cyanide is acrylonitrile or methacrylonitrile.
Claim 4
Dependent Claim
37 words
The thermoplastic resin composition as claimed in claim 1 wherein added to said vinylic monomer mixture (a) is at least one member selected from the group consisting of styrene, α-methyl styrene, vinyl toluene and an alkyl acrylate.
Claim 5
Dependent Claim
38 words
The thermoplastic resin composition as claimed in claim 1 wherein said 80 to 30 parts by weight of a rubber constituent derived from a conjugated diene monomer (b) is selected from the group consisting of polybutadiene and polyisoprene.
Claim 6
Dependent Claim
54 words
The thermoplastic resin composition as claimed in claim 1 wherein said rubber-modified polychlorostyrenic resin (B) has a flow characteristic of 1 to 500 × 10 - 3 cc./sec. at 260°C. under a load of 30 kg. through a nozzle of 1 mm in diameter and 2 mm in length using a Koka Flow Tester.
Claim 7
Dependent Claim
19 words
The thermoplastic resin composition as claimed in claim 1, wherein said composition consists of the components (A) and (B).
Claim 8
Dependent Claim
31 words
The thermoplastic resin composition as claimed in claim 1, wherein said bis(hydroxyaryl)alkanic polycarbonate (A) is used in an amount of 90-20% by weight of the weight of the total resin composition.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |