Patent JPH0331558A successfully refreshed from Google Patents.
US4430467A
Expired / Lapsed
US
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Self-extinguishing propylene polymer
Assignee: SAYTECH INCORPORATION A DE CORP
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Filing: 1982-01-07
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Granted: 1984-02-07
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Expires: 2002-01-07
Abstract
Abstract A flame retardant polymer composition comprising 2,3-dimethyl-2,3-diphenylbutane, a halogenated bisimide corresponding to the formula: ##STR1## wherein Q is methylene or oxygen, X is chlorine or bromine, R is hydrogen or an alkyl group containing 1-5 carbon atoms, R' is hydrogen or methyl and R" is an organic group containing 1-15 carbon atoms, and a polypropylene polymer selected from the group consisting of polypropylene and copolymers containing at least 50% by weight of co-polymerized propylene monomer.
Inventors
- 👤 Joseph M. Lesniewski
- 👤 Michael J. Breza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A flame retardant polymer composition comprising: (a) a polypropylene polymer selected from the group consisting of polypropylene and copolymers containing at least 50% by weight of co-polymerized propylene monomer, (b) a halogenated aliphatic bisimide corresponding to the formula: ##STR7## wherein Q is methylene or oxygen, X is chlorine or bromine, R is hydrogen or an alkyl group containing 1-5 carbon atoms, R' is hydrogen or methyl and R" is an organic group containing 1-15 carbon atoms and (c) 2,3-dimethyl-2,3-diphenylbutane.
Claim 2
Dependent Claim
79 words
A flame retardant polymer composition comprising: (a) a polypropylene polymer selected from the group consisting of polypropylene and copolymers containing at least 50% by weight of co-polymerized propylene monomer, (b) a halogenated aliphatic bisimide corresponding to the formula: ##STR7## wherein Q is methylene or oxygen, X is chlorine or bromine, R is hydrogen or an alkyl group containing 1-5 carbon atoms, R' is hydrogen or methyl and R" is an organic group containing 1-15 carbon atoms and (c) 2,3-dimethyl-2,3-diphenylbutane.
Claim 3
Dependent Claim
28 words
A polymer composition as recited in claim 1 wherein the halogenated aliphatic bisimide corresponds to the formula: ##STR8## wherein R" is an organic group containing 1-15 carbon atoms.
Claim 4
Dependent Claim
12 words
A polymer composition, as recited in claim 2, wherein R" is ethylene.
References Cited (Backward Citations)
US3420786A
Cited
FR2017234A1
Cited
CA919856A
Cited
US3786623A
Cited
US3917642A
Cited
US3923734A
Cited
US3850882A
Cited
US4286071A
Cited
US4320038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |