US3947524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition having high impact resistance
Assignee: Daicel Corp
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Filing: 1974-10-23
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Granted: 1976-03-30
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Expires: 1994-10-23
Abstract
Abstract A flame retardant resin composition having a high impact resistance is disclosed, containing (A) 20 to 85 weight percent of a high molecular weight aromatic polycarbonate copolymer comprising (1) 2 to 30 molar percent of a bisphenol the nucleus of which is substituted with a halogen and (2) 70 to 98 molar percent of a halogen-free bisphenol and (B) 80 to 15 weight percent of an ABS resin comprising a mixture of (1) a graft copolymer of a butadiene-based rubbery polymer to which is grafted a vinyl aromatic hydrocarbon and acrylonitrile and and (2) a copolymer of a vinyl aromatic hydrocarbon and acrylonitrile. The amount of said rubbery polymer is 5 to 40 weight percent of the ABS resin.
Inventors
- 👤 Yukio Hozumi
- 👤 Akira Ohi
- 👤 Yuzo Toga
- 👤 Hiroyuki Yoshizaki
- 👤 Hiromitsu Takanohashi
- 👤 Yoshitaka Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:42
CPC Classifications
C; C08; C08L; C08L55/00; C08L55/02; C08L69/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A flame-retardant impact-resistant resin composition, in which the resin components consist essentially of a blend of A. 20 to 85 weight percent of a high molecular weight aromatic polycarbonate copolymer prepared from a mixture of bisphenols consisting essentially of 2 to 30 molar percent of a bisphenol the nucleus of which is substituted with a halogen and the balance is a halogen-free bisphenol and B. the balance is an ABS resin comprising a mixture of (1) a graft copolymer of a butadiene-based rubbery polymer to which is grafted a vinyl aromatic hydrocarbon and acrylonitrile; and (2) a copolymer of a vinyl aromatic hydrocarbon and acrylonitrile, the amount of said rubbery polymer being 5 to 40 weight percent of B.
Claim 2
Dependent Claim
119 words
A flame-retardant impact-resistant resin composition, in which the resin components consist essentially of a blend of A. 20 to 85 weight percent of a high molecular weight aromatic polycarbonate copolymer prepared from a mixture of bisphenols consisting essentially of 2 to 30 molar percent of a bisphenol the nucleus of which is substituted with a halogen and the balance is a halogen-free bisphenol and B. the balance is an ABS resin comprising a mixture of (1) a graft copolymer of a butadiene-based rubbery polymer to which is grafted a vinyl aromatic hydrocarbon and acrylonitrile; and (2) a copolymer of a vinyl aromatic hydrocarbon and acrylonitrile, the amount of said rubbery polymer being 5 to 40 weight percent of B.
Claim 3
Dependent Claim
23 words
A resin composition according to claim 1 in which the polycarbonate copolymer component A is a copolymer of tetrabromobisphenol A and bisphenol A.
Claim 4
Dependent Claim
27 words
A resin composition according to claim 1 in which the polycarbonate copolymer component A has a limiting viscosity of at least 0.25 in methylene chloride at 25°C.
References Cited (Backward Citations)
US3334154A
Cited
US3649712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |