Patent DE373990C successfully refreshed from Google Patents.
US2646414A
Expired / Lapsed
US
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Polyvinyl chloride polymer dispersion
Assignee: Kendall Co
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Filing: 1952-03-13
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Granted: 1953-07-21
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Expires: 1972-03-13
Abstract
No abstract record available.
Inventors
- 👤 Robert H Gillespie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:41
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/07; C08L; C08L2205/00; C08L2205/02; C08L27/00; C08L27/02; C08L27/04; C08L27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A STABLE LIQUID ORGANOSOL COATING COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSE SOLID PHASE COMPRISING 1 TO 50 PARTS BY WEIGHT OF AT LEAST ONE FINELY-DIVIDED HIGH-MOLECULAR-WEIGHT EMULSION-POLYMERIZED VINYL CHLORIDE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT ABOVE 20,000 AND A COMBINED VINYL CHLORIDE CONTENT IN EXCESS OF 90% BY WEIGHT OF THE POLYMER IN A CONTINUOUS PHASE OF A SOLUTION OF 1 PART OF AT LEAST ONE RELATIVELY LOW-MOLECULAR-WEIGHT VINYL CHLORIDE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 5,000 AND 16,000 AND A COMBINED VINYL CHLORIDE CONTENT IN EXCESS OF ABOUT 60% BY WEIGHT OF THE POLYMER, AND A PLASTICIZER IN A VOLATILE ORGANIC LIQUID CONSISTING ESSENTIALLY OF AN ALKYL KETONE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
114 words
A STABLE LIQUID ORGANOSOL COATING COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSE SOLID PHASE COMPRISING 1 TO 50 PARTS BY WEIGHT OF AT LEAST ONE FINELY-DIVIDED HIGH-MOLECULAR-WEIGHT EMULSION-POLYMERIZED VINYL CHLORIDE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT ABOVE 20,000 AND A COMBINED VINYL CHLORIDE CONTENT IN EXCESS OF 90% BY WEIGHT OF THE POLYMER IN A CONTINUOUS PHASE OF A SOLUTION OF 1 PART OF AT LEAST ONE RELATIVELY LOW-MOLECULAR-WEIGHT VINYL CHLORIDE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 5,000 AND 16,000 AND A COMBINED VINYL CHLORIDE CONTENT IN EXCESS OF ABOUT 60% BY WEIGHT OF THE POLYMER, AND A PLASTICIZER IN A VOLATILE ORGANIC LIQUID CONSISTING ESSENTIALLY OF AN ALKYL KETONE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2530738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |