Patent US3242124A successfully refreshed from Google Patents.
US3242124A
Expired / Lapsed
US
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Flame-resistant acrylonitrile polymer composition containing a brominated phosphonate and calcium phosphate
Assignee: Dow Chemical Co
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Filing: 1964-07-27
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Granted: 1966-03-22
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Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred J Lowes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5337
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
COMPOSITION COMPRISING A SPINNABLE DISPERSION OF (1) A FIBER-FORMING ACRYLONITRILE POLYMER WHICH CONTAINS IN THE POLYMER MOLECULE AT LEAST ABOUT 85 WEIGHT PERCENT OF ACRYLONITRILE, ANY BALANCE BEING ANOTHER MONOETHYLENICALLY UNSATURATED MONOMER THAT IS COPOLYMERIZABLE WITH ACRYLONITRILE (2) AN AQUEOUS SALINE SOLVENT FOR POLYACRYLONITRILE, SAID SOLVENT HAVING ADDITIONALLY DISPERSED THEREIN (3) UP TO ABOUT 20 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE FIBER-FORMING POLYMER, OF A FLAMEPROOFING MIXTURE CONSISTING ESSENTIALLY OF (A) A BROMINE-CONTAINING PHOSPHONATE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
80 words
COMPOSITION COMPRISING A SPINNABLE DISPERSION OF (1) A FIBER-FORMING ACRYLONITRILE POLYMER WHICH CONTAINS IN THE POLYMER MOLECULE AT LEAST ABOUT 85 WEIGHT PERCENT OF ACRYLONITRILE, ANY BALANCE BEING ANOTHER MONOETHYLENICALLY UNSATURATED MONOMER THAT IS COPOLYMERIZABLE WITH ACRYLONITRILE (2) AN AQUEOUS SALINE SOLVENT FOR POLYACRYLONITRILE, SAID SOLVENT HAVING ADDITIONALLY DISPERSED THEREIN (3) UP TO ABOUT 20 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE FIBER-FORMING POLYMER, OF A FLAMEPROOFING MIXTURE CONSISTING ESSENTIALLY OF (A) A BROMINE-CONTAINING PHOSPHONATE HAVING THE GENERAL FORMULA:
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |