US3097178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene chloride copolymer latex containing oxyethylated castor oil
Assignee: Dow Chemical Co
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Filing: 1959-12-30
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Granted: 1963-07-09
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 Harold J Townsend
- 👤 Dallas G Grenley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:13
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A METHOD FOR THE PREPARATION OF A SYNTHETIC RESINOUS COPOLYMER LATEX HAVING LOW FOAMING CHARACTERISTIC AND ADAPTED TO THE DEPOSITION OF A CONTINUOUS FILM THEREFROM COMPRISING COPOLYMERIZING IN A REDOX CATALYZED EMULSION POLYMERIZATION SYSTEM OF LOW EMULSIFIER CONTENT A POLYMERIZABLE MIXTURE OF FROM ABOUT 60 TO ABOUT 94 WEIGHT PERCENT OF VINYLIDENE CHLORIDE AND FROM ABOUT 40 TO ABOUT 6 WEIGHT PERCENT OF AT LEAST ONE OTHER ETHYLENICALLY UNSATURATED MATERIAL THAT IS COPOLYMERIZABLE THEREWITH TO FORM A LATEX HAVING A SURFACE TENSION NOT SUBSTANTIALLY LOWER THAN ABOUT 68 DYNES PER CENTIMETER, AND ADDING TO THE RESULTING LATEX FROM ABOUT 0.2 TO ABOUT 5.0 PARTS BY WEIGHT, ON THE BASIS OF 100 PARTS BY WEIGHT OF THE COPOLYMER CONTAINED IN THE LATEX TO REDUCE THE SURFACE TENSION OF SAID LATEX TO A VALUE NOT EXCEEDING 50 DYNES PER CENTIMETER, OF A COMPOUND OF THE GENERAL FORMULA
Claim 2
Independent Claim
145 words
A METHOD FOR THE PREPARATION OF A SYNTHETIC RESINOUS COPOLYMER LATEX HAVING LOW FOAMING CHARACTERISTIC AND ADAPTED TO THE DEPOSITION OF A CONTINUOUS FILM THEREFROM COMPRISING COPOLYMERIZING IN A REDOX CATALYZED EMULSION POLYMERIZATION SYSTEM OF LOW EMULSIFIER CONTENT A POLYMERIZABLE MIXTURE OF FROM ABOUT 60 TO ABOUT 94 WEIGHT PERCENT OF VINYLIDENE CHLORIDE AND FROM ABOUT 40 TO ABOUT 6 WEIGHT PERCENT OF AT LEAST ONE OTHER ETHYLENICALLY UNSATURATED MATERIAL THAT IS COPOLYMERIZABLE THEREWITH TO FORM A LATEX HAVING A SURFACE TENSION NOT SUBSTANTIALLY LOWER THAN ABOUT 68 DYNES PER CENTIMETER, AND ADDING TO THE RESULTING LATEX FROM ABOUT 0.2 TO ABOUT 5.0 PARTS BY WEIGHT, ON THE BASIS OF 100 PARTS BY WEIGHT OF THE COPOLYMER CONTAINED IN THE LATEX TO REDUCE THE SURFACE TENSION OF SAID LATEX TO A VALUE NOT EXCEEDING 50 DYNES PER CENTIMETER, OF A COMPOUND OF THE GENERAL FORMULA
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |