US3141010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of vinyl ester polymers and copolymers
Assignee: Hoechst AG
•
Filing: 1960-12-15
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Granted: 1964-07-14
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Expires: 1980-12-15
Abstract
No abstract record available.
Inventors
- 👤 Ehmann Werner
- 👤 Kahrs Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:33
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR THE MANUFACTURE OF HOMOPOLYMERS OF VINYL ESTERS OF A MONOBASIC ALIPHATIC SATURATED CARBOXYLIC ACID HAVING 2 TO 18 CARBON ATOMS AND COPOLYMERS OF SAID VINYL ESTERS WITH THEMSELVES, WHICH PROCESS COMPRISES THE STEP OF INITIATING THE POLYMERIZATION OF AT LEAST ONE OF SAID VINYL ESTERS, AT A TEMPERATURE FROM ABOUT -50* TO ABOUT 72*C., WITH A CATALYST COMBINATION CONSISTING ESSENTIALLY OF 0.1 TO 5 PERCENT OF AN ALUMINUM TRIALKYL, THE ALKYL GROUPS OF WHICH CONTAIN 1 TO 12 CARBON ATOMS, AND 0.005 TO 0.05 PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ORGANIC PEROXIDES AND ORGANIC HYDROPEROXIDES, ALL PERCENTAGE FIGURES BEING CALCULATED ON THE WEIGHT OF MONOMERIC VINYL ESTER.
Claim 2
Dependent Claim
114 words
A PROCESS FOR THE MANUFACTURE OF HOMOPOLYMERS OF VINYL ESTERS OF A MONOBASIC ALIPHATIC SATURATED CARBOXYLIC ACID HAVING 2 TO 18 CARBON ATOMS AND COPOLYMERS OF SAID VINYL ESTERS WITH THEMSELVES, WHICH PROCESS COMPRISES THE STEP OF INITIATING THE POLYMERIZATION OF AT LEAST ONE OF SAID VINYL ESTERS, AT A TEMPERATURE FROM ABOUT -50* TO ABOUT 72*C., WITH A CATALYST COMBINATION CONSISTING ESSENTIALLY OF 0.1 TO 5 PERCENT OF AN ALUMINUM TRIALKYL, THE ALKYL GROUPS OF WHICH CONTAIN 1 TO 12 CARBON ATOMS, AND 0.005 TO 0.05 PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ORGANIC PEROXIDES AND ORGANIC HYDROPEROXIDES, ALL PERCENTAGE FIGURES BEING CALCULATED ON THE WEIGHT OF MONOMERIC VINYL ESTER.
References Cited (Backward Citations)
US2868772A
Cited
US3069403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |