Patent US3770682A successfully refreshed from Google Patents.
US3770682A
Expired / Lapsed
US
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Emulsification of sulfonated butyl rubber
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1972-01-20
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Granted: 1973-11-06
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Expires: 1992-01-20
Abstract
Abstract SULFONATED BUTYL RUBBER CONTAINING GREATER THAN 0.5 MOLE PERCENT SO3H IS EMULSIFIED BY DISSOLVING THE ACID FORM OF THE POLYMER IN A SUITABLE SOLVENT INCORPORATING INTO THE SOLVENT RUBBER CEMENT ABOUT 5 TO 30 WT. PERCENT OF A POLAR COSOLVENT AND USING AS EMULSIFIERS NONIONIC EMULSIFIERS AT LEAST ONE OF WHICH IS AN ETHOXYLATED C8-C12 ALKYL PHENOL. IN A PREFERRED EMBODIMENT, AT LEAST ONE EMULSIFIER IS A WATER DISPERSIBLE OR WATER SOLUBLE EMULSIFIER AND IS DISPERSED IN THE WATER INTO WHICH THE CEMENT IS TO BE DISPERSED. THE ORGANIC AND POLAR SOLVENTS MAY BE STRIPPED FROM THE EMULSION ALONG WITH EXCESS WATER TO FORM LATICES SUITABLE FOR USE AS COATINGS AND FILM FORMERS.
Inventors
- 👤 Farrell C O
- 👤 A Hubbard
- 👤 K Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:44
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C08J2323/00; C08J2323/26; C08J2323/32
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |