US2944038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing butyl rubber emulsions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-05-17
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Granted: 1960-07-05
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Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 Hunter Edward Allen
- 👤 Segura Marnell Albin
- 👤 Small Augustus Bailey
- 👤 Alfred L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:54
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C08J2323/00; C08J2323/02; C08J2323/18; C08J2323/20; C08J2323/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A STABLE LATEX OF BUTY RUBBER PREPARED BY LOW TEMPERATURE POLYMERIZATION OF A MAJOR PROPORTION OF ISOBUTYLENE AND A MINOR PROPORTION OF A MULTIOLEFIN COMPRISING 100 PARTS BY WEIGHT OF BUTYL RUBBER EMULSIFIED IN AN AQUEOUS SOLUTION CONTAINING ABOUT 3-4 PARTS BY WEIGHT BASED ON RUBBER OF AN ALKALI METAL SOAP OF A FATTY ACID CONTAINING 12-24 CARBON ATOMS, ABOUT 2-3.5 PARTS BY WEIGHT BASED ON RUBBER OF POLYVINYL ALCOHOL AND ABOUT 2-4 PARTS BY WEIGHT BASED ON RUBBER OF POLYOXYETHYLATED ALKYL PHENOL HAVING FROM 8-12 ETHYLENE OXIDE UNITS IN WHICH THE ALKYL GROUP CONTAINS 8-9 CARBON ATOMS.
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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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |