US3079359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustment of the rheological properties of a dispersion of rubber in an organic solution of rubber by adding water
Assignee: WR Grace and Co
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Filing: 1961-08-02
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Granted: 1963-02-26
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Robert F Sticrli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:28
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; C08J2321/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A FREELY FLOWABLE RUBBER COMPOSITION OF TWO RUBBERY ELASTIC MILLABLE POLYMERS HAVING DIFFERENT SOLUBILITY CHARACTERISTICS IN THE SAME SOLVENT, AND A VOLATILE ORGANIC LIQUID WHICH IS A SOLVENT FOR ONE OF SAID POLYMERS AND A NON-SOLVENT FOR THE OTHER THEREOF, ONE OF SAID POLYMERS BEING DISSOLVED IN THE SOLVENT FORMING A SOLUTION AND THE OTHER BEING DISPERSED AS FINE, UNDISSOLVED PARTICLES IN THE SOLUTION; THE IMPROVEMENT THEREOF CONSISTING OF FROM 5% TO 20% BY WEIGHT OF WATER BASED ON THE WEIGHT OF SAID ORGANIC LIQUID PRESENT IN THE SAID RUBBER COMPOSITION, THE WATER BEING IN THE FORM OF A STABLE DISPERSION OF FINE DROPLETS OF WATER WHICH ARE SUSPENDED IN THE FREELY FLOWABLE RUBBER COMPOSITION BY MEANS OF AN EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF THE DIOCTYL ESTER OF SODIUM SULFOSUCCINIC ACID AND THE ISOCTYL PHENYL ETHER OF POLYETHYLENE GLYCOL, SAID EMULSIFYING AGENT BEING PRESENT IN SAID RUBBER COMPOSITION IN THE PROPORTION OF ABOUT $% TO ABOUT 2% BY WEIGHT OF THE TOTAL SOLIDS THERIN.
Claim 2
Dependent Claim
168 words
IN A FREELY FLOWABLE RUBBER COMPOSITION OF TWO RUBBERY ELASTIC MILLABLE POLYMERS HAVING DIFFERENT SOLUBILITY CHARACTERISTICS IN THE SAME SOLVENT, AND A VOLATILE ORGANIC LIQUID WHICH IS A SOLVENT FOR ONE OF SAID POLYMERS AND A NON-SOLVENT FOR THE OTHER THEREOF, ONE OF SAID POLYMERS BEING DISSOLVED IN THE SOLVENT FORMING A SOLUTION AND THE OTHER BEING DISPERSED AS FINE, UNDISSOLVED PARTICLES IN THE SOLUTION; THE IMPROVEMENT THEREOF CONSISTING OF FROM 5% TO 20% BY WEIGHT OF WATER BASED ON THE WEIGHT OF SAID ORGANIC LIQUID PRESENT IN THE SAID RUBBER COMPOSITION, THE WATER BEING IN THE FORM OF A STABLE DISPERSION OF FINE DROPLETS OF WATER WHICH ARE SUSPENDED IN THE FREELY FLOWABLE RUBBER COMPOSITION BY MEANS OF AN EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF THE DIOCTYL ESTER OF SODIUM SULFOSUCCINIC ACID AND THE ISOCTYL PHENYL ETHER OF POLYETHYLENE GLYCOL, SAID EMULSIFYING AGENT BEING PRESENT IN SAID RUBBER COMPOSITION IN THE PROPORTION OF ABOUT $% TO ABOUT 2% BY WEIGHT OF THE TOTAL SOLIDS THERIN.
References Cited (Backward Citations)
US2238956A
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US2593681A
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US2613156A
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US2624718A
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US2767152A
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US2880184A
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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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |