US3227672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble cationic copolymers of beta-hydroxyalkyl ethlenically unsaturated ester with vinyl tertiary amine
Assignee: Ingredion Inc
•
Filing: 1962-12-12
•
Granted: 1966-01-04
•
Expires: 1982-12-12
Abstract
No abstract record available.
Inventors
- 👤 Fertig Joseph
- 👤 Stanley Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:55
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR THE PREPARATION OF WATER-SOLUBLE CATIONIC POLYMERS WHICH COMPRISES HEATING IN AN ORGANIC SOLVENT-WATER REACTION MEDIUM AT A TEMPERATURE FROM ABOUT 20* TO 90*C. AND IN THE PRESENCE OF A FREE RADICAL CATALYST, WHICH IS PRESENT IN SAID REACTION MEDIUM IN A CONCENTRATION OF FROM ABOUT 0.01 TO 3.0% BASED UPON THE TOTAL WEIGHT OF MONOMERS IN SAID REACTION MEDIUM, A MONOMER CHARGE COMPRISING: (1) A VINYL TERTIARY AMINE SELECTED FROM THE GROUP CONSISTING OF THE MONOVINYL PYRIDINES WHICH HAVE THE STRUCTURE:
Claim 2
Dependent Claim
59 words
THE PROCESS OF CLAIM 4, WHEREIN SAID VINYL TERTIARY AMINE IS PRESENT IN THE MONOMER CHARGE IN THE FORM OF ITS AMINE SALT WHICH HAS BEEN PREVIOUSLY PREPARED BY REACTION OF SAID VINYL TERTIARY AMINE WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF FORMIC, ACETIC, CHLOROACETIC, PROPIONIC, BUTYRIC, TRIMETHYL ACETIC, GLYCOLLIC, CITRIC, HYDROCHLORIC, HYDROBROMIC, SULFURIC, NITRIC, AND PHOSPHORIC.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |