US3301809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-methylol acrylamide-vinyl acetate copolymer emulsions containing polyvinyl alcohol
Assignee: Ingredion Inc
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Filing: 1965-04-23
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Granted: 1967-01-31
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Expires: 1985-04-23
Abstract
No abstract record available.
Inventors
- 👤 Albert I Goldberg
- 👤 Jasinski Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
C; C08; C08F; C08F261/00; C08F261/02; C08F261/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THE PROCESS OF PREPARING STABLE, AQUEOUS EMULSION COPOLYMERS OF VINYL ACETATE AND N-METHYLOL ACRYLAMIDE BY A REACTION WHICH COMPRISES THE HEATING OF AN AQUEOUS EMULSION OF A MONOMER CHARGE CONSISTING EXCLUSIVELY OF VINYL ACETATE AND N-METHYLOL ACRYLAMIDE IN THE PRESENCE OF A FREE RADICAL TYPE CATALYST, AND AQUEOUS EMULSION OF MONOMERIC VINYL ACETATE AND N-METHYLOL ACRYLAMILDE BEING EMULSIFIED WITH POLYVINYL ALCOHOL WHICH IS FROM ABOUT 80 TO ABOUT 90% HYDROLYZED AND WHICH HAS A HOEPPLER VISCOSITY IN THE RANGE OF FROM ABOUT 5 TO ABOUT 25 CENTIPOISE, AS DETERMINED WITH A 4%, BY WEIGHT, AQUEOUS SOLUTION AT A TEMPERTURE OF 20*C.
Claim 2
Dependent Claim
101 words
THE PROCESS OF PREPARING STABLE, AQUEOUS EMULSION COPOLYMERS OF VINYL ACETATE AND N-METHYLOL ACRYLAMIDE BY A REACTION WHICH COMPRISES THE HEATING OF AN AQUEOUS EMULSION OF A MONOMER CHARGE CONSISTING EXCLUSIVELY OF VINYL ACETATE AND N-METHYLOL ACRYLAMIDE IN THE PRESENCE OF A FREE RADICAL TYPE CATALYST, AND AQUEOUS EMULSION OF MONOMERIC VINYL ACETATE AND N-METHYLOL ACRYLAMILDE BEING EMULSIFIED WITH POLYVINYL ALCOHOL WHICH IS FROM ABOUT 80 TO ABOUT 90% HYDROLYZED AND WHICH HAS A HOEPPLER VISCOSITY IN THE RANGE OF FROM ABOUT 5 TO ABOUT 25 CENTIPOISE, AS DETERMINED WITH A 4%, BY WEIGHT, AQUEOUS SOLUTION AT A TEMPERTURE OF 20*C.
References Cited (Backward Citations)
US3081197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |