Patent US3060139A successfully refreshed from Google Patents.
US3060139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable polyvinyl alkanoate latexes containing hydroxyalkyl alkyl cellulose and process for preparing the same
Assignee: Dow Chemical Co
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Filing: 1960-03-07
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Granted: 1962-10-23
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Expires: 1980-03-07
Abstract
No abstract record available.
Inventors
- 👤 Jr George K Greminger
- 👤 Owen L Stafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:58
CPC Classifications
C; C08; C08F; C08F251/00; C08F251/02; C08F18/00; C08F18/02; C08F18/04; C08L; C08L31/00; C08L31/02; C08L31/04; C08L1/00; C08L1/08; C08L1/26; C08L1/28; C08L1/284; C08L2201/00; C08L2201/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
AN IMPROVED POLYMER LATEX COMPOSITION COMPRISING THE AQUEOUS EMULSION POLYMERIZATE OF A MONOMERIC MATERIAL COMPOSED OF AT LEAST 50 PERCENT BY WEIGHT OF A VINYL ALKANOATE HAVING FROM 2 TO 4 CARBON ATOMS IN THE ACID PORTION WITH ANY REMAINDER OF AT LEAST ONE MONOETHYLENICALLY UNSATURATED COMONOMER AND CONTAINING AS THE PRINCIPAL PROTECTIVE COLLOID A HYDROXYALKYL ALKYL CELLULOSE ETHER HAVING FROM 2 TO 3 CARBON ATOMS IN EACH HYDROXYALKYL SUBSTITUENT AND FROM 1 TO 2 CARBON ATOMS IN EACH ALKYL SUBSTITUENT AND ALSO HAVING ABOUT 19 TO 24 PERCENT ALKOXYL SUBSTITUTION AND ABOUT 4 TO 12 PERCENT HYDROXYALKOXYL SUBSTITUTION, SAID HYDROXYALKYL ALKYL CELLULOSE ETHER BEING FURTHER CHARACTERIZED BY A LACK OF VISCOSITY HYSTERESIS IN AQUEOUS SOLUTION.
Claim 2
Dependent Claim
116 words
AN IMPROVED POLYMER LATEX COMPOSITION COMPRISING THE AQUEOUS EMULSION POLYMERIZATE OF A MONOMERIC MATERIAL COMPOSED OF AT LEAST 50 PERCENT BY WEIGHT OF A VINYL ALKANOATE HAVING FROM 2 TO 4 CARBON ATOMS IN THE ACID PORTION WITH ANY REMAINDER OF AT LEAST ONE MONOETHYLENICALLY UNSATURATED COMONOMER AND CONTAINING AS THE PRINCIPAL PROTECTIVE COLLOID A HYDROXYALKYL ALKYL CELLULOSE ETHER HAVING FROM 2 TO 3 CARBON ATOMS IN EACH HYDROXYALKYL SUBSTITUENT AND FROM 1 TO 2 CARBON ATOMS IN EACH ALKYL SUBSTITUENT AND ALSO HAVING ABOUT 19 TO 24 PERCENT ALKOXYL SUBSTITUTION AND ABOUT 4 TO 12 PERCENT HYDROXYALKOXYL SUBSTITUTION, SAID HYDROXYALKYL ALKYL CELLULOSE ETHER BEING FURTHER CHARACTERIZED BY A LACK OF VISCOSITY HYSTERESIS IN AQUEOUS SOLUTION.
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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |