Patent US3069389A successfully refreshed from Google Patents.
US3069389A
Expired / Lapsed
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Suspension polymerization of acrolein
Assignee: Union Carbide Corp
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Filing: 1961-05-10
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Granted: 1962-12-18
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Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Frank J Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:38
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN IMPROVED PROCESS FOR THE SUSPENSION POLYMERIZATION OF ACROLEIN WHICH COMPRISES HEATING ACROLEIN AT A TEMPERATURE OF FROM ABOUT 30*C. TO ABOUT 100*C., IN A DILUENT COMPRISED OF WATER, ADJUSTED TO A PH OF LESS THAN 7, AND DISPERSED IN AN INERT, WATER-IMMISCIBLE ORGANIC COMPOUND, SAID WATER BEING PRESENT IN A PROPORTION OF FROM ABOUT 0.3 TO ABOUT 2 PARTS BY WEIGHT THEREOF PERPART BY WEIGHT OF ACROLEIN INITIALLY PRESENT AND SAID ORGANIC COMPOUND BEING PRESENT IN A PROPORTION OF FROM ABOUT 1 TO ABOUT 4 PARTS BY WEIGHT THEREOF PER PART BY WEIGHT OF ACROLEIN INITIALLY PRESENT, AND AGITATING THE RESULTANT REACTION MIXTURE SUFFICIENTLY TO MAINTAIN A DISPERSION OF SAID WATER IN SAID ORGANIC COMPOUND WHILE MAINTAINING THE TEMPERATURE OF SAID REACTION MIXTURE WITHIN SAID TEMPERATURE RANGE FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A POLYMERIC PRODUCT.
Claim 2
Dependent Claim
139 words
AN IMPROVED PROCESS FOR THE SUSPENSION POLYMERIZATION OF ACROLEIN WHICH COMPRISES HEATING ACROLEIN AT A TEMPERATURE OF FROM ABOUT 30*C. TO ABOUT 100*C., IN A DILUENT COMPRISED OF WATER, ADJUSTED TO A PH OF LESS THAN 7, AND DISPERSED IN AN INERT, WATER-IMMISCIBLE ORGANIC COMPOUND, SAID WATER BEING PRESENT IN A PROPORTION OF FROM ABOUT 0.3 TO ABOUT 2 PARTS BY WEIGHT THEREOF PERPART BY WEIGHT OF ACROLEIN INITIALLY PRESENT AND SAID ORGANIC COMPOUND BEING PRESENT IN A PROPORTION OF FROM ABOUT 1 TO ABOUT 4 PARTS BY WEIGHT THEREOF PER PART BY WEIGHT OF ACROLEIN INITIALLY PRESENT, AND AGITATING THE RESULTANT REACTION MIXTURE SUFFICIENTLY TO MAINTAIN A DISPERSION OF SAID WATER IN SAID ORGANIC COMPOUND WHILE MAINTAINING THE TEMPERATURE OF SAID REACTION MIXTURE WITHIN SAID TEMPERATURE RANGE FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A POLYMERIC PRODUCT.
References Cited (Backward Citations)
US2996481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |