Patent US3265768A successfully refreshed from Google Patents.
US3265768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymer mixtures of tetrahydrofurfuryl methacrylate
Assignee: Monsanto Co
•
Filing: 1962-11-19
•
Granted: 1966-08-09
•
Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Edward H Mottus
- 👤 Joseph E Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:22
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M149/00; C10M149/02; C10M149/04; C10M149/10; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/28; C08F220/281; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10N; C10N2040/00; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR MAKING TETRAHYDROFURFURYL METHACRYLATE AND ALKYL METHACRYLATE COPOLYMER MIXTURE HAVING IMPROVED VISCOSITY-STABILITY IN THE PRESENCE OF A HEAVY DUTY BARIUM DETERGENT ADDITIVE COMPRISING HEATING AT POLYMERIZING TEMPERATURES IN THE PRESENCE OF A FREE RADICAL CATALYST A MAJOR AMOUNT OF AN ALKYL METHACRYLATE MONOMER HAVING NOT LESS THAN 6 AND NOT MORE THAN 20 CARBON ATOMS IN THE ALKYL GROUP FOR A TIME SUFFICIENT TO POLYMERIZE AT LEAST A PORTION OF SAID ALKYL METHACRYLATE TO PROVIDE SAID STABILITY, AND THEN ADDING TO THE POLYMERIZING ALKYL METHACRYLATE UNDER POLYMERIZING CONDITIONS A MINOR AMOUNT OF TETRAHYDROFURFURY METHACRYLATE MONOMER BASED ON SAID ALKYL METHACRYLATE IN A MANNER TO PRODUCE A MIXTURE OF POLYMER SPECIES AND CONTUINING THE POLYMERIZATION UNTIL SUBSTANTIALLY ALL OF THE MONOMER CONTENT IS INCORPORTED IN THE POLMER.
Claim 2
Dependent Claim
128 words
A PROCESS FOR MAKING TETRAHYDROFURFURYL METHACRYLATE AND ALKYL METHACRYLATE COPOLYMER MIXTURE HAVING IMPROVED VISCOSITY-STABILITY IN THE PRESENCE OF A HEAVY DUTY BARIUM DETERGENT ADDITIVE COMPRISING HEATING AT POLYMERIZING TEMPERATURES IN THE PRESENCE OF A FREE RADICAL CATALYST A MAJOR AMOUNT OF AN ALKYL METHACRYLATE MONOMER HAVING NOT LESS THAN 6 AND NOT MORE THAN 20 CARBON ATOMS IN THE ALKYL GROUP FOR A TIME SUFFICIENT TO POLYMERIZE AT LEAST A PORTION OF SAID ALKYL METHACRYLATE TO PROVIDE SAID STABILITY, AND THEN ADDING TO THE POLYMERIZING ALKYL METHACRYLATE UNDER POLYMERIZING CONDITIONS A MINOR AMOUNT OF TETRAHYDROFURFURY METHACRYLATE MONOMER BASED ON SAID ALKYL METHACRYLATE IN A MANNER TO PRODUCE A MIXTURE OF POLYMER SPECIES AND CONTUINING THE POLYMERIZATION UNTIL SUBSTANTIALLY ALL OF THE MONOMER CONTENT IS INCORPORTED IN THE POLMER.
References Cited (Backward Citations)
US2129667A
Cited
US2129665A
Cited
US2330773A
Cited
US2380304A
Cited
US2580053A
Cited
US2726230A
Cited
GB857032A
Cited
US3029228A
Cited
US3067163A
Cited
US3052648A
Cited
US3030347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |