US3953540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile-chlorinated polyethylene-styrene resinous molding compositions containing antimony trioxide
Assignee: Resonac Holdings Corp
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Filing: 1974-05-28
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Granted: 1976-04-27
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Expires: 1994-05-28
Abstract
Abstract A resinous composition suitably used for molding purposes composed of an acrylonitrile-chlorinated polyethylene-styrene ternary resin and antimony trioxide and possessing high flame retardancy and superior antistatic properties.
Inventors
- 👤 Shoichiro Takezoe
- 👤 Masao Ogawa
- 👤 Junichi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:59
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08L; C08L23/00; C08L23/26; C08L23/28; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
A flame retardant, antistatic, high impact strength resinous molding composition consisting essentially of A. from 8 to 20 parts by weight of antimony trioxide, and B. 100 parts by weight of an acrylonitrile-chlorinated polyethylene-styrene ternary resin containing from 25 to 35% by weight of a chlorinated polyethylene having a degree of chlorination of from 30 to 45% by weight obtained by copolymerizing a chlorinated polyethylene, obtained by chlorinating a polyethylene having an average molecular weight of about 50,000, with a mixture of acrylonitrile and styrene to form a graft resin, the ratio of acrylonitrile to styrene being in the range of from 1:99 to 50:50.
Claim 2
Dependent Claim
105 words
A flame retardant, antistatic, high impact strength resinous molding composition consisting essentially of A. from 8 to 20 parts by weight of antimony trioxide, and B. 100 parts by weight of an acrylonitrile-chlorinated polyethylene-styrene ternary resin containing from 25 to 35% by weight of a chlorinated polyethylene having a degree of chlorination of from 30 to 45% by weight obtained by copolymerizing a chlorinated polyethylene, obtained by chlorinating a polyethylene having an average molecular weight of about 50,000, with a mixture of acrylonitrile and styrene to form a graft resin, the ratio of acrylonitrile to styrene being in the range of from 1:99 to 50:50.
Claim 3
Dependent Claim
14 words
The resin of claim 1, in which the average molecular weight is above 100,000.
Claim 4
Dependent Claim
13 words
The resin of claim 2, in which the average molecular weight is 300,000.
Claim 5
Dependent Claim
17 words
The resin of claim 1, in which the chlorinated polyethylene is obtained by chlorinating an ethylene copolymer.
Claim 6
Dependent Claim
15 words
The resin of claim 1, in which the chlorinated polyethylene is obtained by chlorosulfonating polyethylene.
Claim 7
Dependent Claim
20 words
The resin of claim 1, in which the antimony trioxide is present in from 10 to 18 parts by weight.
Claim 8
Dependent Claim
18 words
The resin of claim 6, in which the antimony trioxide is present in about 15 parts by weight.
Claim 9
Dependent Claim
15 words
The resin of claim 1, in which the acrylonitrile is present in 25% by weight.
Claim 10
Dependent Claim
17 words
The resin of claim 1, in which the content of the chlorinated polyethylene is 30% by weight.
Claim 11
Dependent Claim
15 words
The resin of claim 1, in which the degree of chlorination is 40% by weight.
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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |