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US4430467A
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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 19:56
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.
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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 |