Patent US2611754A successfully refreshed from Google Patents.
US2611754A
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Vinyl acetate-allyl acetate copolymer emulsion
Assignee: Shawinigan Resins Corp
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Filing: 1948-11-30
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Granted: 1952-09-23
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Expires: 1968-11-30
Abstract
No abstract record available.
Inventors
- 👤 Rudoff Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:25
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/08; C08F18/00; C08F18/02; C08F18/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS WHICH COMPRISES EMULSIFYING IN WATER A MIXTURE OF 0.8-1.2 MOLECULAR PROPORTIONS OF VINYL ACETATE AND ONE MOLECULAR PROPORTION OF ALLYL ACETATE IN THE PRESENCE OF A DISPERSING AGENT, HEATING THE RESULTING EMULSION TO CAUSE SUBTANTIALLY COMPLETE COPOLYMERIZATION OF THE ACETATES AS INDICATED BY TEH EXOTHERMIC REACTION SUBSIDING, THEN ADDING SUFFICIENT ADDITIONAL VINYL ACETATE TO RAISE THE TOTAL AMOUNT THEREOF TO 95-55 PARTS BY WEIGHT FOR EVERY 5-45 PARTS BY WEIGHT OF ALLYL ACETATE AND HEATING THE RESULTANT MIXTURE UNTIL THE COPOLYMER CONTAINS AT LEAST 55% VINYL ACETATE BY WEIGHT.
Claim 2
Dependent Claim
91 words
A PROCESS WHICH COMPRISES EMULSIFYING IN WATER A MIXTURE OF 0.8-1.2 MOLECULAR PROPORTIONS OF VINYL ACETATE AND ONE MOLECULAR PROPORTION OF ALLYL ACETATE IN THE PRESENCE OF A DISPERSING AGENT, HEATING THE RESULTING EMULSION TO CAUSE SUBTANTIALLY COMPLETE COPOLYMERIZATION OF THE ACETATES AS INDICATED BY TEH EXOTHERMIC REACTION SUBSIDING, THEN ADDING SUFFICIENT ADDITIONAL VINYL ACETATE TO RAISE THE TOTAL AMOUNT THEREOF TO 95-55 PARTS BY WEIGHT FOR EVERY 5-45 PARTS BY WEIGHT OF ALLYL ACETATE AND HEATING THE RESULTANT MIXTURE UNTIL THE COPOLYMER CONTAINS AT LEAST 55% VINYL ACETATE BY WEIGHT.
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) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |