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Patent US3244772A successfully refreshed from Google Patents.
US3244772A
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Process for water-in-oil polymerization of vinyl compositions
Assignee: Bayer AG
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Filing: 1962-05-25
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Granted: 1966-04-05
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Bonin Wulf Von
- 👤 Bartl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:36
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/10; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/32; C08F283/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
PROCESS FOR POLYMERIZATION OF A POLYMERIZABLE ORGANIC WATER-INSOLUBLE MONOMER CONTAINING AT LEAST ONE CH2=C<-GROUP WHICH COMPRISES MIXING SAID POLYMERIZABLE WATER-INSOLUBLE MONOMER WITH A GRAFT COPOLYMER EMULSIFIER WHICH IS SOLUBLE IN SAID POLYMERIZABLE MONOMER AND WHICH HAS BEEN OBTAINED BY GRAFTING A POLYMERIZABLE VINYL MONOMER TO A WATER-SOLUBLE POLYALKYLENE OXIDE CONTAINING POLYETHYLENE OXIDE UNITS AND HAVING A MOLECULAR WEIGHT OF AT LEAST 500, INTRODUCING WATER INTO THE MIXTURE WITH STIRRING TO FORM A WATER-IN-OIL EMULSION CONTAINING 5 TO 4,000% BY WEIGHT OF WATER, BASED ON THE TOTAL AMOUNT OF MONOMER, AND POLYMERIZING SAID WATERIN-OIL EMULSION WITH THE AID OF 0.1 TO 5% BY WEIGHT, BASED ON THE TOTAL MONOMER QUANTITY, OF A FREE RADICALFORMING SUBSTANCE.
Claim 2
Dependent Claim
114 words
PROCESS FOR POLYMERIZATION OF A POLYMERIZABLE ORGANIC WATER-INSOLUBLE MONOMER CONTAINING AT LEAST ONE CH2=C<-GROUP WHICH COMPRISES MIXING SAID POLYMERIZABLE WATER-INSOLUBLE MONOMER WITH A GRAFT COPOLYMER EMULSIFIER WHICH IS SOLUBLE IN SAID POLYMERIZABLE MONOMER AND WHICH HAS BEEN OBTAINED BY GRAFTING A POLYMERIZABLE VINYL MONOMER TO A WATER-SOLUBLE POLYALKYLENE OXIDE CONTAINING POLYETHYLENE OXIDE UNITS AND HAVING A MOLECULAR WEIGHT OF AT LEAST 500, INTRODUCING WATER INTO THE MIXTURE WITH STIRRING TO FORM A WATER-IN-OIL EMULSION CONTAINING 5 TO 4,000% BY WEIGHT OF WATER, BASED ON THE TOTAL AMOUNT OF MONOMER, AND POLYMERIZING SAID WATERIN-OIL EMULSION WITH THE AID OF 0.1 TO 5% BY WEIGHT, BASED ON THE TOTAL MONOMER QUANTITY, OF A FREE RADICALFORMING SUBSTANCE.
Claim 3
Dependent Claim
95 words
PROCESS OF CLAIM 1, WHEREIN AS GRAFT COPOLYMERS POLYMERIC MATERIALS ARE EMPLOYED WHICH HAVE BEEN OBTAINED BY GRAFTING (1) A VINYLIDENE MONOMER SELECTED FROM THE GROUP CONSISTING OF A POLYVINYL ESTER OF A SATURATED ALIPHATIC MONOCARBOXYLIC ACID, AN ESTER OF ACRYLIC ACID WITH AN ALIPHATIC SATURATED MONOHYDRIC ALCOHOL HAVING FROM 1 TO 6 CARBON ATOMS, AN ESTER OF METHACRYLIC ACID WITH AN ALIPHATIC MONOHYDRIC ALCOHOL HAVING FROM 1 TO 6 CARBON ATOMS, ON TO (2) A WATER-SOLUBLE POLYALKYLENE OXIDE CONTAINING AT LEAST THE POLYETHYLENE OXIDE UNITS AND HAVING A MOLECULAR WEIGHT OF AT LEAST 500.
Claim 4
Dependent Claim
44 words
PROCESS OF CLAIM 2, WHEREIN AS THE POLYMERIZABLE ORGANIC WATER-INSOLUBLE MONOMER STYRENE IS POLYMERIZED IN THE PRESENCE OF AN UNSATURATED POLYMER OF AN A,BETHYLENICALLY UNSATURATED DICARBOXYLIC ACID AND A DIHYDRIC ALCOHOL, THE RATIO BETWEEN SAID UNSATURATED POLYESTER AND STYRENE BEING BETWEEN 9:1 AND 1:9.
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) | 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 |