US3232912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Promoting free radical polymerization of unsaturated materials
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-09-11
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Granted: 1966-02-01
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 John C Munday
- 👤 Dilworth T Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:58
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/62; C08F271/00; C08F271/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN THE POLYMERIZATION OF AN UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, C1 TO C20 ALIPHATIC ALCOHOL ESTERS OF ACRYLIC ACID, AND C1 TO C20 ALIPHATIC ALCOHOL ESTERS OF METHACRYLIC ACID, IN THE PRESENCE OF A CATALYST CONSISTING OF A PEROXIDE, THE IMPROVEMENT WHICH COMPRISES PROMOTING THE POLYMERIZATION BY ADDING TO THE MIXTURE OF MONOMER AND CATALYST FROM ABOUT 0.05 TO ABOUT 1 WEIGHT PERCENT OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF MONOMERS, HOMOPOLYMERS AND COPOLYMERS OF N-VINYL PYRROLIDONES WHICH IN THEIR MONOMER FORM HAVE THE FORMULA:
Claim 2
Dependent Claim
92 words
IN THE POLYMERIZATION OF AN UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, C1 TO C20 ALIPHATIC ALCOHOL ESTERS OF ACRYLIC ACID, AND C1 TO C20 ALIPHATIC ALCOHOL ESTERS OF METHACRYLIC ACID, IN THE PRESENCE OF A CATALYST CONSISTING OF A PEROXIDE, THE IMPROVEMENT WHICH COMPRISES PROMOTING THE POLYMERIZATION BY ADDING TO THE MIXTURE OF MONOMER AND CATALYST FROM ABOUT 0.05 TO ABOUT 1 WEIGHT PERCENT OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF MONOMERS, HOMOPOLYMERS AND COPOLYMERS OF N-VINYL PYRROLIDONES WHICH IN THEIR MONOMER FORM HAVE THE FORMULA:
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |