US3244658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing a stable aqueous emulsion
Assignee: GAF Chemicals Corp
•
Filing: 1960-11-16
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Granted: 1966-04-05
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Expires: 1980-11-16
Abstract
No abstract record available.
Inventors
- 👤 Grosser Frederick
- 👤 Marvin R Leibowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:18
CPC Classifications
C; C08; C08F; C08F271/00; C08F271/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN EMULSION POLYMERIZATION PROCESS CONSISTING ESSENTIALLY IN SUBJECTING TO POLYMERIZATION CONDITIONS, AT A TEMPERATURE RANGING FROM ABOUT 70*C. UP TO THE BOILING POINT, AN EMULSION OF A WATER INSOLUBLE MONOMER SELECTED FROM THE GROUP CONSISTING OF THE ESTERS OF ACRYLIC, METHACRYLIC, A-ETHACRYLIC, AND A-CHLOROACRYLIC ACIDS WITH MONOHYDRIC ALCOHOLS, IN AN AQUEOUS SOLUTION CONTAINING AN NVINYL LACTAM HOMOPOLYMER AND ABOUT 0.05 TO 3%, BASED ON THE WEIGHT OF SAID MONOMER, OF A WATER SOLUBLE INORGANIC PEROXYGEN CATALYST, THE WEIGHT RTIO OF SAID HOMOPOLYMER TO SAID MONOMER RANGING FROM ABOUT 5:95 TO 60:40, THEREBY PRODUCING DIRECTLY A STABLE AQUEOUS EMULSION OF A GRAFT COPOLYMER OF SAID MONOMER ON A N-VINYL LACTAM HOMOPOLYMER SUBSTRATE.
Claim 2
Dependent Claim
111 words
AN EMULSION POLYMERIZATION PROCESS CONSISTING ESSENTIALLY IN SUBJECTING TO POLYMERIZATION CONDITIONS, AT A TEMPERATURE RANGING FROM ABOUT 70*C. UP TO THE BOILING POINT, AN EMULSION OF A WATER INSOLUBLE MONOMER SELECTED FROM THE GROUP CONSISTING OF THE ESTERS OF ACRYLIC, METHACRYLIC, A-ETHACRYLIC, AND A-CHLOROACRYLIC ACIDS WITH MONOHYDRIC ALCOHOLS, IN AN AQUEOUS SOLUTION CONTAINING AN NVINYL LACTAM HOMOPOLYMER AND ABOUT 0.05 TO 3%, BASED ON THE WEIGHT OF SAID MONOMER, OF A WATER SOLUBLE INORGANIC PEROXYGEN CATALYST, THE WEIGHT RTIO OF SAID HOMOPOLYMER TO SAID MONOMER RANGING FROM ABOUT 5:95 TO 60:40, THEREBY PRODUCING DIRECTLY A STABLE AQUEOUS EMULSION OF A GRAFT COPOLYMER OF SAID MONOMER ON A N-VINYL LACTAM HOMOPOLYMER SUBSTRATE.
References Cited (Backward Citations)
US2890199A
Cited
GB819049A
Cited
US2949435A
Cited
US2922768A
Cited
FR1200760A
Cited
US3072600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |