US2936295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal and mechanical stable latices of isoolefin-multiolefin rubbery polymers and process for preparing same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-06-22
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Granted: 1960-05-10
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Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 Robert S Brodkey
- 👤 Alfred L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:33
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: 2
Claim 1
Independent Claim
134 words
A PROCESS FOR PREPARING A STABLE RUBBER LATEX CONTAINING BETWEEN 20 AND 40% RUBBER SOLIDS, WHICH COMPRISES (1) EMULSIFYING 100 PARTS BY WEIGHT OF A LOW UNSATURATED RUBBERY COPOLYMER OF A MAJOR PROPORTION OF ISOBUTYLENE AND A MINOR PROPORTION OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS IN SUFFICIENT WATER TO YIELD 20-40% RUBBER SOLIDS AND IN THE PRESENCE OF 1 TO 20 PARTS BY WEIGHT OF AN EMULSIFIER, BASED ON THE COPOLYMER, SAID EMUSIFIER HAVING THE GENERAL FORMULA R(OCH2CH2)NOSO3X WHERE R IS A RADICAL CHOSEN FROM THE GROUP CONSISTING OF ALKYL, ARYL, AND ALKARYL CONTAINING 10-18 CARBON ATOMS, N IS 4 TO 9, AND X IS MONOVALENT RADICAL CHOSEN FROM THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM SALTS, (2) CONCENTRATING THE EMULSION, AND (3) RECOVERING A STABLE RUBBER LATEX.
Claim 2
Dependent Claim
134 words
A PROCESS FOR PREPARING A STABLE RUBBER LATEX CONTAINING BETWEEN 20 AND 40% RUBBER SOLIDS, WHICH COMPRISES (1) EMULSIFYING 100 PARTS BY WEIGHT OF A LOW UNSATURATED RUBBERY COPOLYMER OF A MAJOR PROPORTION OF ISOBUTYLENE AND A MINOR PROPORTION OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS IN SUFFICIENT WATER TO YIELD 20-40% RUBBER SOLIDS AND IN THE PRESENCE OF 1 TO 20 PARTS BY WEIGHT OF AN EMULSIFIER, BASED ON THE COPOLYMER, SAID EMUSIFIER HAVING THE GENERAL FORMULA R(OCH2CH2)NOSO3X WHERE R IS A RADICAL CHOSEN FROM THE GROUP CONSISTING OF ALKYL, ARYL, AND ALKARYL CONTAINING 10-18 CARBON ATOMS, N IS 4 TO 9, AND X IS MONOVALENT RADICAL CHOSEN FROM THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM SALTS, (2) CONCENTRATING THE EMULSION, AND (3) RECOVERING A STABLE RUBBER LATEX.
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) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |