Patent US3072589A successfully refreshed from Google Patents.
US3072589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous polymerization of fluorinated monomer in the presence of halogenated aromaticcompounds
Assignee: Dow Chemical Co
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Filing: 1960-02-04
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Granted: 1963-01-08
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Expires: 1980-02-04
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Rausch
- 👤 Harold G Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:36
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/24; C08F214/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR PREPARING LATEXES OF FLUORINATED POLYMERS COMPRISING EMULSIFYING IN AN AQUEOUS MEDIUM (A) A POLYMERIZABLE MONOMRIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHLOROTRIFLUOROETHYLENE AND AMIXTURES THEREOF WITH LESSER AMOUNTS OF VINYLIDENE FLUORIDE TOGETHER WITH (B) A RELATIVELY SMALL AMOUNT OF A MONOMER MIXTURE CONSISTING ESSENTIALLY OF 2-SODIOSULFOETHYL ACRYLATE AND METHYL ACRYLATE AND (C) FROM ABOUT 1 PERCENT TO ABOUT 10 PERCENT BY WEIGHT, BASED ON THE TOTAL INITIAL WEIGHT OF (A) PLUS (B), OF A DICHLOROBENZENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORTHODICHLOROBENZENE AND 2,5-DICHLOROBENZOTRIFLUORIDE, AND MAINTAINING THE EMULSION UNTIL SUBSTANTIALLY COMPLETE POLYMERIXATION OCCURS.
Claim 2
Dependent Claim
98 words
A PROCESS FOR PREPARING LATEXES OF FLUORINATED POLYMERS COMPRISING EMULSIFYING IN AN AQUEOUS MEDIUM (A) A POLYMERIZABLE MONOMRIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHLOROTRIFLUOROETHYLENE AND AMIXTURES THEREOF WITH LESSER AMOUNTS OF VINYLIDENE FLUORIDE TOGETHER WITH (B) A RELATIVELY SMALL AMOUNT OF A MONOMER MIXTURE CONSISTING ESSENTIALLY OF 2-SODIOSULFOETHYL ACRYLATE AND METHYL ACRYLATE AND (C) FROM ABOUT 1 PERCENT TO ABOUT 10 PERCENT BY WEIGHT, BASED ON THE TOTAL INITIAL WEIGHT OF (A) PLUS (B), OF A DICHLOROBENZENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORTHODICHLOROBENZENE AND 2,5-DICHLOROBENZOTRIFLUORIDE, AND MAINTAINING THE EMULSION UNTIL SUBSTANTIALLY COMPLETE POLYMERIXATION OCCURS.
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |