US3052648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of copolymers useful as dispersants in oils
Assignee: Rohm and Haas Co
•
Filing: 1960-02-29
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Granted: 1962-09-04
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Expires: 1980-02-29
Abstract
No abstract record available.
Inventors
- 👤 La Verne N Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:23
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/28; C08F220/285; C08F220/286; C08F265/00; C08F265/04; C08F267/00; C08F267/06; C08F28/00; C08F290/00; C08F290/02; C08F290/06; C08F290/062; C08F291/00; C08F299/00; C08F299/02; C08F299/022; C08F299/024; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1963; C10L1/1966; C10L1/198; C10L1/1985; C10L1/20; C10L1/206; C10L1/208; C10L1/22; C10L1/234; C10L1/236; C10L1/24; C10L1/2462; C10L1/2468; C10L1/26; C10L1/2666; C10L1/2675; C10M2203/00; C10M2203/10; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/102; C10M2209/103; C10M2209/104; C10M2209/105; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/026; C10M2217/04; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/10; C10M2219/104; C10M2219/108; C10M2221/00; C10M2221/02; C10M2221/04; C10M2221/043; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/063; C10M2225/00; C10M2225/02; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2030/00; C10N2030/08; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS FOR PREPARING OIL-SOLLUBLE DISPERSING COPOLYMERS WHICH COMPRISES FIRST POLYMERIZING UNDER THE INFLUENCE OF A FREE RADICAL POLYMERIZATION INITIATOR AT LEAST ONE POLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONOMER UNTIL 40% TO ABOUT 90% THEREOF HAS POLYMERIZED, WHEREBY A MIXTURE OF MONOMER AND POLYMER IS FORMED, SAID MONOMER BEING SELECTED FROM AT LEAST ONE MEMBER OF THE CLASS CONSISTING OF ALKYL ESTERS OF ACRYLIC, METHACRYLIC, ITACONIC, FUMARIC, AND MALEIC ACIDS, VINYL ESTERS OF ALKANOIC ACIDS, AND MIXTURES OF SAID ESTERS, THE AVERAGE SIZE OF ALKYL GROUP IN SAID ESTERS BEING SUFFICIENTLY LARGE TO IMPART SOLUBILITY OF COPOLYMER IN HYDROCARBON OILS AND BEING AT LEAST EIGHT CARBON ATOMS, THEN ADDING TO SAID MIXTURE AT LEAST ONE ETHER ESTER OF THE FORMULA
Claim 2
Dependent Claim
118 words
A PROCESS FOR PREPARING OIL-SOLLUBLE DISPERSING COPOLYMERS WHICH COMPRISES FIRST POLYMERIZING UNDER THE INFLUENCE OF A FREE RADICAL POLYMERIZATION INITIATOR AT LEAST ONE POLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONOMER UNTIL 40% TO ABOUT 90% THEREOF HAS POLYMERIZED, WHEREBY A MIXTURE OF MONOMER AND POLYMER IS FORMED, SAID MONOMER BEING SELECTED FROM AT LEAST ONE MEMBER OF THE CLASS CONSISTING OF ALKYL ESTERS OF ACRYLIC, METHACRYLIC, ITACONIC, FUMARIC, AND MALEIC ACIDS, VINYL ESTERS OF ALKANOIC ACIDS, AND MIXTURES OF SAID ESTERS, THE AVERAGE SIZE OF ALKYL GROUP IN SAID ESTERS BEING SUFFICIENTLY LARGE TO IMPART SOLUBILITY OF COPOLYMER IN HYDROCARBON OILS AND BEING AT LEAST EIGHT CARBON ATOMS, THEN ADDING TO SAID MIXTURE AT LEAST ONE ETHER ESTER OF THE FORMULA
References Cited (Backward Citations)
US2129694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |