US3896185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant molding resin composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1974-02-19
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Granted: 1975-07-22
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Expires: 1994-02-19
Abstract
Abstract A molding resin composition high in flame resistance and excellent in mechanical properties and moldability which contains a nucleus-halogenated aromatic polycarbonate and a rubbermodified nucleus-chlorinated styrene resin.
Inventors
- 👤 Eiichi Yonemitsu
- 👤 Seiichi Kamiyama
- 👤 Toshiaki Kanada
- 👤 Norio Nagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:55
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L69/00; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
A RESIN COMPOSITION HIGH IN FLAME RESISTANCE AND EXCELLENT IN MECHANICAL PROPRTIES AND MOLDABILITY COMPRISING: A. A POLYCARBONATE RESIN HAVING REPEATING UNITS REPRESENTED BY THE FORMULA,
Claim 2
Dependent Claim
26 words
A RESIN COMPOSITION HIGH IN FLAME RESISTANCE AND EXCELLENT IN MECHANICAL PROPRTIES AND MOLDABILITY COMPRISING: A. A POLYCARBONATE RESIN HAVING REPEATING UNITS REPRESENTED BY THE FORMULA,
Claim 3
Dependent Claim
34 words
A resin composition according to claim 1, wherein the polycarbonate resin is a copolymer derived from the bifunctional phenolic mixture comprising at least 1 percent by weight of 2,2-bis(3,5-dihalogeno-4-hydroxyphenyl)alkane and the balance being 2,2-bis(hydroxyphenyl)alkane.
Claim 4
Dependent Claim
96 words
A resin composition according to claim 1, wherein the rubber-modified nucleus-chlorinated styrene resin contains a polymer unit derived from the conjugated diene monomer in an amount of 3 to 30 percent by weight based on the weight of the resin, a polymer unit derived from a nucleus-chlorinated styrene in an amount of 50 to 87 percent by weight, and a polymer unit derived from a member selected from the group consisting of a vinyl cyanide and an alkyl methacrylate in an amount of 10 to 30 percent by weight, based on the weight of the resin.
Claim 5
Dependent Claim
26 words
A resin composition according to claim 1, wherein said rubber-modified nucleus-chlorinated styrene is a graft copolymer of said repeating monomer units grafted on said rubbery polymer.
Claim 6
Dependent Claim
34 words
A resin composition according to claim 1, wherein said rubber-modified nucleus-chlorinated styrene resin is a blend of said rubbery polymer with a graft copolymer of said repeating monomer units grafted on the rubbery copolymer.
Claim 7
Dependent Claim
53 words
A resin composition according to claim 1, wherein said rubber-modified nucleus-chlorinated styrene resin has a flow characteristic such that the amount of melt flow through a standard nozzle of 1mm in diameter and 2mm in length measured at 260*C. under a load of 30kg. is from 1 to 500 X 10 3 cc/sec.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |