US3061599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic polymerization of alkyl esters of acrylic and methacrylic acids in heterogeneous mixture
Assignee: California Research LLC
•
Filing: 1959-08-28
•
Granted: 1962-10-30
•
Expires: 1979-08-28
Abstract
No abstract record available.
Inventors
- 👤 Vries Louis De
- 👤 John R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:12
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
PROCESS FOR POLYMERIZING AN ALAKKYL ESTER SELECTED FROM THE GROUP CONSISTING OF ALKYL ESTERS OF ACRYLIC ACID AND METHACRYLIC ACID, WHICH COMPRISES CONTACTING THE ESTER AT A TEMPERATURE IN THE RANGE -10*C. TO +50*C. WITH A SUSPENSION OF LITHIUM HYDRIDE CATALYST OF SEMICOLLOIDAL DIMENSION, SAID SUSPENSION BEING OBTAINED BY CONTACTING A SOLUTION OF LITHIUM ALUMINUM HYDRIDE WITH AN ORGANIC NONSOLVENT IN THE PRESENCE OF A SOLUTION OF AN OIL-SOLUBLE POLYMERIC MACROMOLECULAR DISPERSANT, THE SOLUTION OF THE POLYMERIC MACROMOLECULAR DISPERSANT CONTAINING 0.25 TO 5 PERCENT DISPERSANT CONALYST BEING EMPLOYED IN A MOL RATIO TO THE ESTER RANGING FROM 1 TO 5-1000, AND THE LITHIUM ALUMINUM HYDRIDE SOLUTION BEING EMPLOYED IN A VOLUME RATIO TO THE POLYMERIC MACROMOLECULAR DISPERSANT SOLUTION RANGING FROM ABOUT 1:10 TO 1:100.
Claim 2
Dependent Claim
124 words
PROCESS FOR POLYMERIZING AN ALAKKYL ESTER SELECTED FROM THE GROUP CONSISTING OF ALKYL ESTERS OF ACRYLIC ACID AND METHACRYLIC ACID, WHICH COMPRISES CONTACTING THE ESTER AT A TEMPERATURE IN THE RANGE -10*C. TO +50*C. WITH A SUSPENSION OF LITHIUM HYDRIDE CATALYST OF SEMICOLLOIDAL DIMENSION, SAID SUSPENSION BEING OBTAINED BY CONTACTING A SOLUTION OF LITHIUM ALUMINUM HYDRIDE WITH AN ORGANIC NONSOLVENT IN THE PRESENCE OF A SOLUTION OF AN OIL-SOLUBLE POLYMERIC MACROMOLECULAR DISPERSANT, THE SOLUTION OF THE POLYMERIC MACROMOLECULAR DISPERSANT CONTAINING 0.25 TO 5 PERCENT DISPERSANT CONALYST BEING EMPLOYED IN A MOL RATIO TO THE ESTER RANGING FROM 1 TO 5-1000, AND THE LITHIUM ALUMINUM HYDRIDE SOLUTION BEING EMPLOYED IN A VOLUME RATIO TO THE POLYMERIC MACROMOLECULAR DISPERSANT SOLUTION RANGING FROM ABOUT 1:10 TO 1:100.
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |