US3767622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly hydroxyarylpolymethylenesulfonium zwitterionic monomers and surface coatings therefrom
Assignee: Dow Chemical Co
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Filing: 1972-04-18
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Granted: 1973-10-23
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Expires: 1992-04-18
Abstract
Abstract POLY (HYDROXYARYLPOLYMETHYLENESULFONIUM) SALTS (I), PREPARED BY CONDENSATION OF A POLYPHENOLIC RESIN WITH A CYCLIC SULFIDE, ARE CONVERTED INTO A SULFONIUM HYDROXIDE INNER SALT (II) A REACTIVE ZWITTERIONIC MONOMER. THESE ZWITTERIONIC MONOMERS THERMALLY POLYMERIZE TO YIELD WATER-INSOLUBLE, THERMOSET RESINS USEFUL AS ADHESIVES, COATINGS, FILMS, AND IMPREGNANTS. APPLIED TO NON-POROUS SURFACE, SUCH AS GLASS AND WIRE, HARD SURFACE COATINGS WITH HIGH IMPACT RESISTANCE COUPLER WITH GOOD WATER AND CHEMICAL RESISTANCE ARE OBTAINED. (((-CH2-(B)C-A-CH2-)>S(+)-),R,HO,(R'')A-PHENYL)-(Z-(HO,(R'')A- PHENYLENE))X-(Z-(HO,(R'')A,(-CH2-(B)C-A-CH2-)>S(+)-PHENYL- ENE))Y-R (A(-))2
Inventors
- 👤 H Smith
- 👤 M Hatch
- 👤 D Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:29
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/12; C08G75/02; C08G75/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 0
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |