US2958668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making vinyl chloridedialkyl maleate copolymer latex
Assignee: Uniroyal Inc
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Filing: 1956-04-09
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Granted: 1960-11-01
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Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Clide I Carr
- 👤 Gerard C Zwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:28
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
THE METHOD OF MAKING A COPOLYMER LATEX WHICH COMPRISES HEATING AT TEMPERATURE FROM 25*C. TO 60*C. A POLYMERIZATION MIXTURE OF WATER, SURFACE-ACTIVE EMULSIFYING AGENT, FREE RADICAL PRODUCING POLYMERIZATION CATALYST, AND POLYMERIZABLE MONOMERS CONSISTING OF MORE THAN 50% BY WEIGHT OF VINYL CHLORIDE, 10% TO LESS THAN 50% BY WEIGHT OF DIALKYL MALEATE IN WHICH EACH ALKYL GROUP HAS 10 TO 18 CARBON ATOMS, VINYL ACETATE IN AMOUNT UP TO 20% BY WEIGHT OF SAID VINYL CHLORIDE, AND A VINYL ESTER OF HIGHER FATTY ACID HAVING 8 TO 18 CARBON ATOMS IN THE ACID RADICAL, SAID VINYL ESTER OF HIGHER FATTY ACID BEING IN AMOUNT UP TO TWO TIMES THE WEIGHT OF SAID DIALKYL MALEATE, THE DIALKYL MALEATE IN SAID POLYMERIZATION MIXTURE BEING COLLOIDALLY DISPERSED IN SAID WATER AS DROPLETS HAVING A VOLUME-AVERAGE PARTICLE DIAMETER BETWEEN 0.1 AND 1 MICRON.
Claim 2
Independent Claim
139 words
THE METHOD OF MAKING A COPOLYMER LATEX WHICH COMPRISES HEATING AT TEMPERATURE FROM 25*C. TO 60*C. A POLYMERIZATION MIXTURE OF WATER, SURFACE-ACTIVE EMULSIFYING AGENT, FREE RADICAL PRODUCING POLYMERIZATION CATALYST, AND POLYMERIZABLE MONOMERS CONSISTING OF MORE THAN 50% BY WEIGHT OF VINYL CHLORIDE, 10% TO LESS THAN 50% BY WEIGHT OF DIALKYL MALEATE IN WHICH EACH ALKYL GROUP HAS 10 TO 18 CARBON ATOMS, VINYL ACETATE IN AMOUNT UP TO 20% BY WEIGHT OF SAID VINYL CHLORIDE, AND A VINYL ESTER OF HIGHER FATTY ACID HAVING 8 TO 18 CARBON ATOMS IN THE ACID RADICAL, SAID VINYL ESTER OF HIGHER FATTY ACID BEING IN AMOUNT UP TO TWO TIMES THE WEIGHT OF SAID DIALKYL MALEATE, THE DIALKYL MALEATE IN SAID POLYMERIZATION MIXTURE BEING COLLOIDALLY DISPERSED IN SAID WATER AS DROPLETS HAVING A VOLUME-AVERAGE PARTICLE DIAMETER BETWEEN 0.1 AND 1 MICRON.
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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |