US3271344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant acrylonitrile polymer compositions containing polyepihalohydrins andantimony oxide
Assignee: Dow Chemical Co
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Filing: 1964-01-21
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Granted: 1966-09-06
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Expires: 1984-01-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred J Lowes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:01
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 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 AND (2) BETWEEN ABOUT 10 AND 20 WEIGHT PERCENT BASED ON THE WEIGHT OF SAID FIBER-FORMING POLYMER, OF A FLAMEPROOFING MIXTURE COMPRISED OF (A) AT LEAST 2.5 WEIGHT PERCENT OF A SUBSTANTIALLY WATER-INSOLUBLE POLYEPIHALOHYDRIN, SAID POLYEPIHALOHYDRIN BEING ESSENTIALLY DEVOID OF FUBNCTIONAL EPOXY GROUPS AND HAVING AN AVERAGE MOLECULAR WEIGHT LESS THAN ABOUT 1200 AND A VISCOSITY AT 100*F. OF BETWEEN ABOUT 300 AND 4000 CENTISTOKES AND (B) ANTIMONY OXIDE, THE RATIO OF POLYEPIHALOHYDRIN TO ANTIMONY OXIDE BEING FROM ABOUT 1:5 TO 5:1.
Claim 2
Dependent Claim
119 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 AND (2) BETWEEN ABOUT 10 AND 20 WEIGHT PERCENT BASED ON THE WEIGHT OF SAID FIBER-FORMING POLYMER, OF A FLAMEPROOFING MIXTURE COMPRISED OF (A) AT LEAST 2.5 WEIGHT PERCENT OF A SUBSTANTIALLY WATER-INSOLUBLE POLYEPIHALOHYDRIN, SAID POLYEPIHALOHYDRIN BEING ESSENTIALLY DEVOID OF FUBNCTIONAL EPOXY GROUPS AND HAVING AN AVERAGE MOLECULAR WEIGHT LESS THAN ABOUT 1200 AND A VISCOSITY AT 100*F. OF BETWEEN ABOUT 300 AND 4000 CENTISTOKES AND (B) ANTIMONY OXIDE, THE RATIO OF POLYEPIHALOHYDRIN TO ANTIMONY OXIDE BEING FROM ABOUT 1:5 TO 5:1.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |