Patent US2658044A successfully refreshed from Google Patents.
US2658044A
Expired / Lapsed
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Aqueous dispersions of butyl rubber-natural rubber blends
Assignee: Uniroyal Inc
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Filing: 1952-09-11
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Granted: 1953-11-03
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Expires: 1972-09-11
Abstract
No abstract record available.
Inventors
- 👤 Everett V Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:03
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J2321/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A COMPOSITION COMPRISING A DISPERSION OF PARTICLES OF A BLEND OF A RUBBERY COPOLYMER OF A MAJOR PROPORTION OF ISOOLEFINE AND A MINOR PROPORTION OF CONJUGATED DIENE AND NATURAL RUBBER IN AN AQUEOUS MEDIUM, THE NATURAL RUBBER PORTION OF THE BLEND BEING VULCANIZED IN ITS AQUEOUS DISPERSED STATE IN THE BLEND IN THE PRESENCE OF 0.05 TO 5% OF SULFUR BASED ON THE NATURAL RUBBER, SAID COMPOSITION CONTAINING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALKALI SOAPS OF SOAPFORMING MONOCARBOXYLIC ACIDS HAVING 10 TO 20 CARBON ATOMS, GLYCOL ESTERS OF FATTY ACIDS HAVING 10 20 CARBON ATOMS, PROTEINS AND COLLOIDAL CLAYS, THE RATIO OF NATURAL RUBBER TO COPOLYMER IN SAID BLENDED PARTICLES BEING IN THE RANGE FROM 1:10 TO 1:1.
Claim 2
Dependent Claim
120 words
A COMPOSITION COMPRISING A DISPERSION OF PARTICLES OF A BLEND OF A RUBBERY COPOLYMER OF A MAJOR PROPORTION OF ISOOLEFINE AND A MINOR PROPORTION OF CONJUGATED DIENE AND NATURAL RUBBER IN AN AQUEOUS MEDIUM, THE NATURAL RUBBER PORTION OF THE BLEND BEING VULCANIZED IN ITS AQUEOUS DISPERSED STATE IN THE BLEND IN THE PRESENCE OF 0.05 TO 5% OF SULFUR BASED ON THE NATURAL RUBBER, SAID COMPOSITION CONTAINING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALKALI SOAPS OF SOAPFORMING MONOCARBOXYLIC ACIDS HAVING 10 TO 20 CARBON ATOMS, GLYCOL ESTERS OF FATTY ACIDS HAVING 10 20 CARBON ATOMS, PROTEINS AND COLLOIDAL CLAYS, THE RATIO OF NATURAL RUBBER TO COPOLYMER IN SAID BLENDED PARTICLES BEING IN THE RANGE FROM 1:10 TO 1:1.
References Cited (Backward Citations)
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Cited
US1964771A
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US2332194A
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US2194958A
Cited
US2467322A
Cited
US2418250A
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US2450579A
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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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |