Patent US3056764A successfully refreshed from Google Patents.
US3056764A
Expired / Lapsed
US
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Manufacture of polymers from polymers of unsaturated acids
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1960-04-11
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Granted: 1962-10-02
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Graham Neil Bonnette
- 👤 Segall Gordon Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:38
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/40; C08G63/42; C08F; C08F8/00; C08F8/14; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS WHICH COMPRISES REACTING TOGETHER, AT A TEMPERATURE BETWEEN 20*C. AND 95*C. AND AT A SUBSTANTIALLY ATMOSPHERIC PRESSURE, (1) A POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF A,B-ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS AND COPOLYMERS OF SAID ACIDS WITH AT LEAST ONE OTHER ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, SAID POLYMER BEING IN SOLUTION IN AN ANHYDROUS INERT SOLVENT, AND (2) ABOUT ONE EQUIVALENT, BASED ON THE ACID GROUPS IN SAID POLYMER, OF AT LEAST ONE FINELY DISPERSED GASEOUS ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE AND PROPYLENE OXIDE IN THE PRESENCE OF (3) BETWEEN 1/20 AND 4/30 OF AN EQUIVALENT, BASED ON THE ACID GROUPS IN SAID POLYMER, OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIA, CAUSTIC SODA AND ORGANIC AMINES SOLUBLE IN SAID SOLVENT.
Claim 2
Dependent Claim
131 words
A PROCESS WHICH COMPRISES REACTING TOGETHER, AT A TEMPERATURE BETWEEN 20*C. AND 95*C. AND AT A SUBSTANTIALLY ATMOSPHERIC PRESSURE, (1) A POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF A,B-ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS AND COPOLYMERS OF SAID ACIDS WITH AT LEAST ONE OTHER ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, SAID POLYMER BEING IN SOLUTION IN AN ANHYDROUS INERT SOLVENT, AND (2) ABOUT ONE EQUIVALENT, BASED ON THE ACID GROUPS IN SAID POLYMER, OF AT LEAST ONE FINELY DISPERSED GASEOUS ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE AND PROPYLENE OXIDE IN THE PRESENCE OF (3) BETWEEN 1/20 AND 4/30 OF AN EQUIVALENT, BASED ON THE ACID GROUPS IN SAID POLYMER, OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIA, CAUSTIC SODA AND ORGANIC AMINES SOLUBLE IN SAID SOLVENT.
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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |