US3306871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic latexes comprising ar-monovinyl aromatic sulfonic acid saltstyrene-butadiene terpolymers
Assignee: Dow Chemical Co
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Filing: 1964-03-26
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Granted: 1967-02-28
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Expires: 1984-03-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:38
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F214/00; C08F214/02; C08F214/14; C08F22/00; C08F22/30; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F220/46; C08F236/00; C08F236/02; C08F236/04; C08F246/00; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
AN EMULSION POLYMERIZATION METHOD FOR MAKING A SYNTHETIC AQUEOUS LATEX WHICH IS NON-FOAMING, MECHANICALLY STABLE, AND NON-SENSITIVE TO COAGULATION BY ELECTROLYTES AND WHICH, WHEN DRIED IN A THIN LAYER, DEPOSITS A COHERENT SOLID FILM WHICH IS RESISTANT TO WATER AND HAS A LOW MOISTURE VAPOR TRANSMISSION RATE, WHICH METHOD IS CARRIED OUT BY AGITATING AND HEATING AT A POLYMERIZATION TEMPERATURE IN THE SUBSTANTIAL ABSENCE OF AIR A MIXTURE OF FROM 0.5 TO 3 PARTS BY WEIGHT OF A SODIUM AR-MONOVINYL AROMATIC SULFONATE AND FROM 99.5 TO 97 PARTS BY WEIGHT OF A MIXTURE OF FROM 10 TO 70 PERCENT BY WEIGHT OF STYRENE AND FROM 90 TO 30 PERCENT BY WEIGHT OF 1,3-BUTADIENE, TOGETHER WITH WATER AND A FREE-RADICALGENERATING CATALYST AND LESS THAN 5 WEIGHT PERCENT OF WATER-SOLUBLE NON-POLYMERIZABLE NON-CATIONIC SURFACTANT BASED ON THE COMBINED WEIGHT OF THE POLYMERIZABLE MONOMERS, THERE BEING FROM 0.5 TO 1.5 PARTS BY WEIGHT OF THE SAID SODIUM MONOVINYL AROMATIC SULFONATE WHEN THERE IS NO WATER-SOLUBLE NON-POLYMERIZABLE SURFACTANT PRESENT IN THE POLYMERIZATION REACTION MIXTURE.
Claim 2
Dependent Claim
169 words
AN EMULSION POLYMERIZATION METHOD FOR MAKING A SYNTHETIC AQUEOUS LATEX WHICH IS NON-FOAMING, MECHANICALLY STABLE, AND NON-SENSITIVE TO COAGULATION BY ELECTROLYTES AND WHICH, WHEN DRIED IN A THIN LAYER, DEPOSITS A COHERENT SOLID FILM WHICH IS RESISTANT TO WATER AND HAS A LOW MOISTURE VAPOR TRANSMISSION RATE, WHICH METHOD IS CARRIED OUT BY AGITATING AND HEATING AT A POLYMERIZATION TEMPERATURE IN THE SUBSTANTIAL ABSENCE OF AIR A MIXTURE OF FROM 0.5 TO 3 PARTS BY WEIGHT OF A SODIUM AR-MONOVINYL AROMATIC SULFONATE AND FROM 99.5 TO 97 PARTS BY WEIGHT OF A MIXTURE OF FROM 10 TO 70 PERCENT BY WEIGHT OF STYRENE AND FROM 90 TO 30 PERCENT BY WEIGHT OF 1,3-BUTADIENE, TOGETHER WITH WATER AND A FREE-RADICALGENERATING CATALYST AND LESS THAN 5 WEIGHT PERCENT OF WATER-SOLUBLE NON-POLYMERIZABLE NON-CATIONIC SURFACTANT BASED ON THE COMBINED WEIGHT OF THE POLYMERIZABLE MONOMERS, THERE BEING FROM 0.5 TO 1.5 PARTS BY WEIGHT OF THE SAID SODIUM MONOVINYL AROMATIC SULFONATE WHEN THERE IS NO WATER-SOLUBLE NON-POLYMERIZABLE SURFACTANT PRESENT IN THE POLYMERIZATION REACTION MIXTURE.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |