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Patent US3344128A successfully refreshed from Google Patents.
US3344128A
Expired / Lapsed
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⏱️ 0.0 years remaining
Thiourea dioxide as reductant in emulsion polymerization
Assignee: Phillips Petroleum Co
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Filing: 1965-04-12
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Granted: 1967-09-26
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Carl A Uraneck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN THE AQUEOUS EMULSION POLYMERIZATION OF A MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND AN ADMIXTURE OF BUTADIENE AND STYRENE, THE IMPROVEMENT WHICH CONSISTS IN CARRYING OUT THE POLYMERIZATION IN THE PRESENCE OF 0.01 TO 0.5 PART OF THIOUREA DIOXIDE AS A REDUCING AGENT, 1 TO 10 PARTS OF AT LEAST ONE EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF ROSIN ACID AND FATTY ACID SOAP. 0.001 TO 0.3 PART P-MENTHANE HYDROPEROXIDE AS OXIDANT, 0.001 TO 0.05 PART OF AT LEAST ONE IRON SALT SELECTED FROM THE GROUP CONSISTING OF IRON SULFATE AND IRON NITRATE. 0.005 TO 1 PART OF A POTASSIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CHLORIDE AND POTASSIUM HYDROXIDE AS ELECTROLYTE AND 0.001 TO 1 PART OF THE SODIUM SALT OF ETHYLENEDIAMINETETRAACETIC ACID, ALL THE FOREGOING PARTS BEING EXPRESSED AS PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF MONOMERIC MATERIAL.
Claim 2
Dependent Claim
149 words
IN THE AQUEOUS EMULSION POLYMERIZATION OF A MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND AN ADMIXTURE OF BUTADIENE AND STYRENE, THE IMPROVEMENT WHICH CONSISTS IN CARRYING OUT THE POLYMERIZATION IN THE PRESENCE OF 0.01 TO 0.5 PART OF THIOUREA DIOXIDE AS A REDUCING AGENT, 1 TO 10 PARTS OF AT LEAST ONE EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF ROSIN ACID AND FATTY ACID SOAP. 0.001 TO 0.3 PART P-MENTHANE HYDROPEROXIDE AS OXIDANT, 0.001 TO 0.05 PART OF AT LEAST ONE IRON SALT SELECTED FROM THE GROUP CONSISTING OF IRON SULFATE AND IRON NITRATE. 0.005 TO 1 PART OF A POTASSIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CHLORIDE AND POTASSIUM HYDROXIDE AS ELECTROLYTE AND 0.001 TO 1 PART OF THE SODIUM SALT OF ETHYLENEDIAMINETETRAACETIC ACID, ALL THE FOREGOING PARTS BEING EXPRESSED AS PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF MONOMERIC MATERIAL.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |