Patent US4928078A successfully refreshed from Google Patents.
Patent US3094500A successfully refreshed from Google Patents.
US3094500A
Expired / Lapsed
US
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Vinyl ester polymer emulsions containing polyvinyl alcohol
Assignee: Shawinigan Resins Corp
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Filing: 1959-08-31
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Granted: 1963-06-18
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Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Stedman C Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:35
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C08L; C08L29/00; C08L29/02; C08L29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A STABLE AQUEOUS VINYL ESTER POLYMER EMULSION COMPRISING 50% UP TO ABOUT 60% BY WEIGHT OF THE EMULSION OF DISCRETE VINYL ESTER POLYMER PARTICLES HAVING AN AVERAGE SIZE RANGE OF 1-1.5 MICRONS DIAMETER, SAID EMULSION(A) HAVING A VISCOSITY BELOW 1,000 CENTPOISES AT 25*C. (B) FORMING FILMS WHICH ON AIR DRYING ARE REMOISTENABLE AND POSSESS HIGH GLOSS AND CLARIFY (C) BEING PRODUCED BY POLYMERIZATION OF AN AQUEOUS DISPERSION OF (A) A VINYL ESTER OF AN ORGANIC ACID (B) AT LEAST 10% TO ABOUT 12% BY WEIGHT OF THE EMULSION OF A POLYVINYL ALCOHOL HAVING A VISCOSITY OF 1.33 TO 3 CENTIPOISES FOR A 4% AQUEOUS SOLUTION AT 20*C. WHICH WAS PREPARED BY THE HYDROLYSIS OF 70 TO 90% OF THE ESTER GROUPS OF A POLYVINYL ESTER 8C) A MINOR AMOUNT OF A DISPERSANT TAKEN FROM THE GROUP CONSISTING OF WATER-SOLUBLE, ANIONIC, CATIONIC AND NON-IONIC ORGANIC SURFACTANTS.
Claim 2
Dependent Claim
145 words
A STABLE AQUEOUS VINYL ESTER POLYMER EMULSION COMPRISING 50% UP TO ABOUT 60% BY WEIGHT OF THE EMULSION OF DISCRETE VINYL ESTER POLYMER PARTICLES HAVING AN AVERAGE SIZE RANGE OF 1-1.5 MICRONS DIAMETER, SAID EMULSION(A) HAVING A VISCOSITY BELOW 1,000 CENTPOISES AT 25*C. (B) FORMING FILMS WHICH ON AIR DRYING ARE REMOISTENABLE AND POSSESS HIGH GLOSS AND CLARIFY (C) BEING PRODUCED BY POLYMERIZATION OF AN AQUEOUS DISPERSION OF (A) A VINYL ESTER OF AN ORGANIC ACID (B) AT LEAST 10% TO ABOUT 12% BY WEIGHT OF THE EMULSION OF A POLYVINYL ALCOHOL HAVING A VISCOSITY OF 1.33 TO 3 CENTIPOISES FOR A 4% AQUEOUS SOLUTION AT 20*C. WHICH WAS PREPARED BY THE HYDROLYSIS OF 70 TO 90% OF THE ESTER GROUPS OF A POLYVINYL ESTER 8C) A MINOR AMOUNT OF A DISPERSANT TAKEN FROM THE GROUP CONSISTING OF WATER-SOLUBLE, ANIONIC, CATIONIC AND NON-IONIC ORGANIC SURFACTANTS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |