US3372141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-extinguishing polystyrene resin compositions
Assignee: Dow Chemical Co
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Filing: 1963-02-04
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Granted: 1968-03-05
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Richard T Dickerson
- 👤 William F Tousignant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08F; C08F2/00; C08F2/12; C08F2/16; C08F279/00; C08F279/02; C08K5/13; C08K5/136; C08L; C08L25/00; C08L9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A SELF-EXTINGUISHING STYRENE POLYMER COMPRISING THE HOMOPOLYMERS AND COPOLYMERS OF MONOVINYL AROMATIC COMPOUNDS CONTAINING NO MORE THAN A MINOR AMOUNT OF ANOTHER MONOEHTYLENICALLY UNSATURATED ORGANIC COMPOUND COPOLYMERIZED THEREWITH AND CONTAINING FROM ABOUT 0.1 TO ABOUT 5 PERCENT BY WEIGHT OF A MIXED BROMINE-CONTAINING ALKENYL-ARYL ETHER OF: (1) A BROMINE-CONTAINING ALKENYL COMPOUND WHEREIN THE HYDROGEN ATOMS ON THE OLEFINIC CARBON ATOMS IN THE ALKENYL GROUP HAVE BEEN REPLACED BY BROMINE ATOMS AND SAID ALKENYL GROUP CONTAINS FROM 3 TO 4 CARBON ATOMS; AND (2) TRIPHENYL CARBINOL OR A HALOGENATED PHENOL.
Claim 2
Dependent Claim
89 words
A SELF-EXTINGUISHING STYRENE POLYMER COMPRISING THE HOMOPOLYMERS AND COPOLYMERS OF MONOVINYL AROMATIC COMPOUNDS CONTAINING NO MORE THAN A MINOR AMOUNT OF ANOTHER MONOEHTYLENICALLY UNSATURATED ORGANIC COMPOUND COPOLYMERIZED THEREWITH AND CONTAINING FROM ABOUT 0.1 TO ABOUT 5 PERCENT BY WEIGHT OF A MIXED BROMINE-CONTAINING ALKENYL-ARYL ETHER OF: (1) A BROMINE-CONTAINING ALKENYL COMPOUND WHEREIN THE HYDROGEN ATOMS ON THE OLEFINIC CARBON ATOMS IN THE ALKENYL GROUP HAVE BEEN REPLACED BY BROMINE ATOMS AND SAID ALKENYL GROUP CONTAINS FROM 3 TO 4 CARBON ATOMS; AND (2) TRIPHENYL CARBINOL OR A HALOGENATED PHENOL.
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |