US3075939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing dispersions from blend of fluorine containing polymers
Assignee: 3M Co
•
Filing: 1958-10-08
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Granted: 1963-01-29
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Expires: 1978-10-08
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Bauer
- 👤 Jay A Gervasi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; C08L; C08L27/00; C08L27/02; C08L27/12; C08J2327/00; C08J2327/02; C08J2327/12; C08L27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF MAKING A FINE DISPERSION WHICH COMPRISES BLENDING A LATEX OF A SOLUBLE, NORMALLY SOLID FLUORINE-CONTAINING COPOLYMER OF VINYLIDENE FLUORIDE AND A MEMBER OF THE GROUP CONSISTING OF PERFLUOROPROPENE AND TRIFLUOROCHLOROETHYLENE WITH A LATEX OF AN INSOLUBLE, NORMALLY SOLID TRIFLUOROCHLOROETHYLENE POLYMER, THE RATIO OF SOLUBLE TO INSOLUBLE POLYMER IN THE RESULTING BLENDED LATEX RANGING FROM 2:1 TO 100:1, COAGULATING THE LATEX BLEND TO PRODUCE A COAGULUM, ADDING THE COAGULUM TO A SOLVENT MER AND AGITATING THE RESULTING ADMIXTURE, THEREBY OBTAINING A FINE DISPERSION OF THE INSOLUBLE, NORMALLY SOLID TRIFLUOROCHLOROETHYLENE POLYMER IN A SOLVENT CONTAINING THE SOLUBLE, NORMALLY SOLID FLUORINE-CONTAINING COPOLYMER AS A SOLUTE.
Claim 2
Independent Claim
105 words
THE METHOD OF MAKING A FINE DISPERSION WHICH COMPRISES BLENDING A LATEX OF A SOLUBLE, NORMALLY SOLID FLUORINE-CONTAINING COPOLYMER OF VINYLIDENE FLUORIDE AND A MEMBER OF THE GROUP CONSISTING OF PERFLUOROPROPENE AND TRIFLUOROCHLOROETHYLENE WITH A LATEX OF AN INSOLUBLE, NORMALLY SOLID TRIFLUOROCHLOROETHYLENE POLYMER, THE RATIO OF SOLUBLE TO INSOLUBLE POLYMER IN THE RESULTING BLENDED LATEX RANGING FROM 2:1 TO 100:1, COAGULATING THE LATEX BLEND TO PRODUCE A COAGULUM, ADDING THE COAGULUM TO A SOLVENT MER AND AGITATING THE RESULTING ADMIXTURE, THEREBY OBTAINING A FINE DISPERSION OF THE INSOLUBLE, NORMALLY SOLID TRIFLUOROCHLOROETHYLENE POLYMER IN A SOLVENT CONTAINING THE SOLUBLE, NORMALLY SOLID FLUORINE-CONTAINING COPOLYMER AS A SOLUTE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |