US3769247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose ether thickener for latex paint
Assignee: Dow Chemical Co
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Filing: 1972-04-10
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Granted: 1973-10-30
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Expires: 1992-04-10
Abstract
Abstract NEW WATER-SOLUBLE HYDROXYETHYL METHYL CELLULOSE ETHERS HAVE BEEN PREPARED WHICH ARE IMPROVED THICKENERS FOR LATEX PAINT. THESE NEW ETHERS HAVE A THERMAL GEL POINT GREATER THAN 100*C., A HYDROXYETHYL MS OF ABOUT 1.0-3.5, A METHOXYL DS OF ABOUT 0.6-1.6 AND A TOTAL DS OF ABOUT 1.4-2.4. LATEX PAINT THICKENED WITH THESE NEW ETHERS HAS IMPROVED ENZYME RESISTANCE AND COMPATIBILITY WITH PREDISPERSED COLORANTS.
Inventors
- 👤 J Grover
- 👤 R Glomski
- 👤 L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:59
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/193; C09; C09D; C09D7/00; C09D7/40; C09D7/43; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; C08L1/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |