US2998400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floc-free polyvinyl acetate emulsions employing polyvinylmethyl ether copolymer as prtective colloid and process of preparation
Assignee: Wyandotte Chemicals Corp
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Filing: 1958-05-15
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Granted: 1961-08-29
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Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 David M French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:59
CPC Classifications
C; C08; C08F; C08F261/00; C08F261/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A COMPOSITION PARTICULARY ADAPTED FOR FORMING A FLOC-FREE POLYCINYL ACETATE EMULSION COMPRISING 100 PARTS BY WEIGHT OF MONOMERIC VINYL ACETATE, ABOUT 60 TO 300 PARTS BY WEIGHT OF WATER, ABOUT 2 TO 7 PARTS BY WEIGHT OF AN AMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING TO ANIONIC EMULSIFYING AGENTS, NONIONIC EMULSIFYING AGENTS AND MIXTURES THEREOF EFFECTIVE AT A PH IN THE RANGE OD ABOUT 3-7, ABOUT 0.05 TO 0.5 PART BY WEIGHT OF A WATER SOLUBLE FREE RADICAL POLYMERIZATION CATALYST AND ABOUT 0.25 TO 3 PARTS BY WEIGHT OF A PROTECTIVE COLLOUD SELECTED FROM THE GROUP CONSISTING OF VINYL METHYL ETHER/ MALIC ANHYDRIDE COPOLYMER, THE AMMONIA REACTION PRODUCT OF VINYL METHYL ETHER-MALEIC ANHYDRIDE COPOLYMER AND MIXTURES THEREOF, SAID COMPOSITION HAVING A PH IN THE RANGE OF ABOUT 3 TO 7.
Claim 2
Dependent Claim
130 words
A COMPOSITION PARTICULARY ADAPTED FOR FORMING A FLOC-FREE POLYCINYL ACETATE EMULSION COMPRISING 100 PARTS BY WEIGHT OF MONOMERIC VINYL ACETATE, ABOUT 60 TO 300 PARTS BY WEIGHT OF WATER, ABOUT 2 TO 7 PARTS BY WEIGHT OF AN AMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING TO ANIONIC EMULSIFYING AGENTS, NONIONIC EMULSIFYING AGENTS AND MIXTURES THEREOF EFFECTIVE AT A PH IN THE RANGE OD ABOUT 3-7, ABOUT 0.05 TO 0.5 PART BY WEIGHT OF A WATER SOLUBLE FREE RADICAL POLYMERIZATION CATALYST AND ABOUT 0.25 TO 3 PARTS BY WEIGHT OF A PROTECTIVE COLLOUD SELECTED FROM THE GROUP CONSISTING OF VINYL METHYL ETHER/ MALIC ANHYDRIDE COPOLYMER, THE AMMONIA REACTION PRODUCT OF VINYL METHYL ETHER-MALEIC ANHYDRIDE COPOLYMER AND MIXTURES THEREOF, SAID COMPOSITION HAVING A PH IN THE RANGE OF ABOUT 3 TO 7.
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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |