US4331780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant transparent resinous copolymer
Assignee: Phillips Petroleum Co
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Filing: 1980-03-20
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Granted: 1982-05-25
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Expires: 2000-03-20
Abstract
Abstract A flame retarded transparent resinous block copolymer comprising a transparent block copolymer containing about 50 to about 95 weight percent polymerized monovinyl aromatic compound and about 5 to about 50 weight percent polymerized conjugated diene and a flame retarding amount of a flame retardant selected from certain tris(bromoalkyl)phosphates or isocyanurates.
Inventors
- 👤 Donnie G. Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
A flame retarded transparent resinous block copolymer composition comprising a transparent block copolymer containing about 50 to about 95 weight percent polymerized monovinyl aromatic compound and about 5 to about 50 weight percent polymerized conjugated diene and a flame retarding amount of flame retardant wherein all said flame retardant is tris-(dibromopropyl)isocyanurate.
Claim 2
Dependent Claim
51 words
A flame retarded transparent resinous block copolymer composition comprising a transparent block copolymer containing about 50 to about 95 weight percent polymerized monovinyl aromatic compound and about 5 to about 50 weight percent polymerized conjugated diene and a flame retarding amount of flame retardant wherein all said flame retardant is tris-(dibromopropyl)isocyanurate.
Claim 3
Dependent Claim
35 words
A composition according to claim 1 wherein said flame retardant is present in an amount in the range of about 10 to about 20 parts by weight per 100 parts by weight of said copolymer.
Claim 4
Dependent Claim
28 words
A composition according to claim 2 wherein said block copolymer is a resinous branched block copolymer containing about 75 percent polymerized styrene and about 25 percent polymerized butadiene.
References Cited (Backward Citations)
US3039991A
Cited
US3420786A
Cited
US3457204A
Cited
US3472799A
Cited
US3441524A
Cited
US3830768A
Cited
US4086192A
Cited
US4054616A
Cited
US4140660A
Cited
US4158086A
Cited
US4198493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |