US3755227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retarded block copolymers and additive system therefor
Assignee: Phillips Petroleum Co
•
Filing: 1972-03-27
•
Granted: 1973-08-28
•
Expires: 1992-03-27
Abstract
Abstract Flame-retardancy is imparted to ethylene-propylene block copolymers by incorporation therein as the flame-retardant system a mixture of (A) a chlorinated paraffin, (B) a brominated bis(cycloalkenyl) compound, and (C) antimony trioxide.
Inventors
- 👤 R Gray
- 👤 D Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:54
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08K5/00; C08K5/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A composition according to claim 1 wherein compound (A) is 1, 2-bis(3,4-dibromocyclohexyl)-1,2-dibromoethane and compound (B) is a chlorinated paraffin having 68 to 72 weight percent chlorine an approximate molecular weight of 1000.
References Cited (Backward Citations)
US2590211A
Cited
US3403118A
Cited
US3635850A
Cited
US3576784A
Cited
US3591507A
Cited
US3660533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |