Patent US3364283A successfully refreshed from Google Patents.
US3364283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of vinylidene cyanide and an unsaturated sulfonic acid and blends containing same
Assignee: Celanese Corp
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Filing: 1961-09-11
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Granted: 1968-01-16
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Stephen M Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:06
CPC Classifications
C; C08; C08L; C08L31/00; C08L31/02; C08L31/04; C08F; C08F22/00; C08F22/30; C08F22/34; C08F28/00; C08L33/00; C08L33/18; C08L33/20; C08L35/00; C08L35/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
IN THE COPOLYMERIZATION OF VINYLIDENE CYANIDE WITH AN ETHYLENICALLY UNSATURATED ORGANIC SULFONIC ACID AND AT LEAST ONE ADDITIONAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, THE IMPROVEMENT WHICH COMPRISES FIRST COPOLYMERIZING SAID VINYLIDENE CYANIDE AND SAID ADDITIONAL MONOMER AND, AFTER SAID COPOLYMERIZATION IS ABOUT 60 TO 85 PERCENT COMPLETE, INTRODUCING SAID SULFONIC ACID IN AN AMOUNT OF ABOUT 0.2 TO 2 MOLE PERCENT OF THE VINYLIDENE CYANIDE AND CONTINUING COPOLYMERIZATION.
Claim 2
Dependent Claim
68 words
IN THE COPOLYMERIZATION OF VINYLIDENE CYANIDE WITH AN ETHYLENICALLY UNSATURATED ORGANIC SULFONIC ACID AND AT LEAST ONE ADDITIONAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, THE IMPROVEMENT WHICH COMPRISES FIRST COPOLYMERIZING SAID VINYLIDENE CYANIDE AND SAID ADDITIONAL MONOMER AND, AFTER SAID COPOLYMERIZATION IS ABOUT 60 TO 85 PERCENT COMPLETE, INTRODUCING SAID SULFONIC ACID IN AN AMOUNT OF ABOUT 0.2 TO 2 MOLE PERCENT OF THE VINYLIDENE CYANIDE AND CONTINUING COPOLYMERIZATION.
Claim 3
Dependent Claim
65 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF (A) ABOUT 60 TO 85 PARTS BY WEIGHT OF A COPOLYMER OF VINYLIDENE CYANIDE AND AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, OTHER THAN AN ORGANIC SULFONIC ACID, AND (B) ABOUT 40 TO 15 PARTS BY WEIGHT OF ANOTHER POLYMER COMPRISING VINYLIDENE CYANIDE, AN ETHYLENICALLY UNSATURATED ORGANIC SULFONIC ACID AND AT LEAST ONE ADDITIONAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH.
Claim 4
Dependent Claim
65 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF (A) ABOUT 60 TO 85 PARTS BY WEIGHT OF A COPOLYMER OF VINYLIDENE CYANIDE AND AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, OTHER THAN AN ORGANIC SULFONIC ACID, AND (B) ABOUT 40 TO 15 PARTS BY WEIGHT OF ANOTHER POLYMER COMPRISING VINYLIDENE CYANIDE, AN ETHYLENICALLY UNSATURATED ORGANIC SULFONIC ACID AND AT LEAST ONE ADDITIONAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH.
Claim 5
Dependent Claim
76 words
A SHAPED STRUCTURE CONSISTING ESSENTIALLY OF (A) ABOUT 60 TO 85 PARTS BY WEIGHT OF A COPOLYMER OF VINYLIDENE CYANIDE AND AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, OTHER THAN AN ORGANIC SULFONIC ACID, (B) ABOUT 40 TO 15 PARTS BY WEIGHT OF ANOTHER POLYMER COMPRISING VINYLIDENE CYANIDE, STYRENE SULFONIC ACID AND AT LEAST ONE ADDITIONAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, AND (C) UP TO ABOUT 20 PARTS BY WEIGHT OF A POLYMER OF N,N-DI(LOWER ALKYL) ACRYLAMIDE.
Claim 6
Dependent Claim
76 words
A SHAPED STRUCTURE CONSISTING ESSENTIALLY OF (A) ABOUT 60 TO 85 PARTS BY WEIGHT OF A COPOLYMER OF VINYLIDENE CYANIDE AND AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, OTHER THAN AN ORGANIC SULFONIC ACID, (B) ABOUT 40 TO 15 PARTS BY WEIGHT OF ANOTHER POLYMER COMPRISING VINYLIDENE CYANIDE, STYRENE SULFONIC ACID AND AT LEAST ONE ADDITIONAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, AND (C) UP TO ABOUT 20 PARTS BY WEIGHT OF A POLYMER OF N,N-DI(LOWER ALKYL) ACRYLAMIDE.
References Cited (Backward Citations)
US2649434A
Cited
US2773856A
Cited
US2837501A
Cited
US2819253A
Cited
US3133039A
Cited
US3008918A
Cited
US3139621A
Cited
US3180857A
Cited
US3243415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |