Patent US2880466A successfully refreshed from Google Patents.
US2880466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing films from polymer latexes
Assignee: Dow Chemical Co
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Filing: 1957-01-14
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Granted: 1959-04-07
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Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 Roland E Gunderman
- 👤 Max E Elder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:20
CPC Classifications
B; B29; B29D; B29D7/00; B29D7/01; Y; Y10; Y10S; Y10S264/00; Y10S264/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A PROCESS FOR PREPARING CONTINUOUS COHERENT ARTICLES FROM POLYMER LATEXES CONSISTING OF AS A AEQUENCE OF STEPS THE WETTING OF A SUPPORTING SURFACE WITH AN AQUEOUS ELECTROYLT COAGUABLE SOLUTION THE CASTING OF AN TERIAL COMPOSED OF A CHLOROETHYLENE MONOMER AND AN TERIAL COMPOSED OF A CHLOROETHYLENE MOMOMER AND ANOTHER MONOETHYLENICALLY UNSATURATED COMONMER ON SAID WET SURFACE IN A METERED THICKNESS, THE WASHING OF THE SO-FORMED COAGULUM TO REMOVE SUBSTANTIALLU ALL OF SAID ELECTROLYTE, AND FUSING OF SAID COAGULUM INTO A CONTINUOUS COHERENT ARTICLE, THE IMPROVEMENT CONSISTING OF SUBJECTING SAID COAGULUM TO HEATING BELOW THE FUSION TEMPERATURE OF SAID COAGTULUM PRIOR TO SAID WASHING STEP AND BEFORE SAID COAGULUM IS STRIPPED FROM SAID SUPPOTTING SURFACE.
Claim 2
Dependent Claim
115 words
IN A PROCESS FOR PREPARING CONTINUOUS COHERENT ARTICLES FROM POLYMER LATEXES CONSISTING OF AS A AEQUENCE OF STEPS THE WETTING OF A SUPPORTING SURFACE WITH AN AQUEOUS ELECTROYLT COAGUABLE SOLUTION THE CASTING OF AN TERIAL COMPOSED OF A CHLOROETHYLENE MONOMER AND AN TERIAL COMPOSED OF A CHLOROETHYLENE MOMOMER AND ANOTHER MONOETHYLENICALLY UNSATURATED COMONMER ON SAID WET SURFACE IN A METERED THICKNESS, THE WASHING OF THE SO-FORMED COAGULUM TO REMOVE SUBSTANTIALLU ALL OF SAID ELECTROLYTE, AND FUSING OF SAID COAGULUM INTO A CONTINUOUS COHERENT ARTICLE, THE IMPROVEMENT CONSISTING OF SUBJECTING SAID COAGULUM TO HEATING BELOW THE FUSION TEMPERATURE OF SAID COAGTULUM PRIOR TO SAID WASHING STEP AND BEFORE SAID COAGULUM IS STRIPPED FROM SAID SUPPOTTING SURFACE.
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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |