US2630427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of strongly basic anion-exchange resins
Assignee: Rohm and Haas Co
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Filing: 1951-10-05
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Granted: 1953-03-03
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Expires: 1971-10-05
Abstract
No abstract record available.
Inventors
- 👤 Jesse C H Hwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:25
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS OF PREPARING STRONGLY BASIC ANIONEXCHANGE RESINS CONTAINING POLAR QUATERNARY AMMONIUM GROUIPS WHICH COMPRISES REACTING IN AQUEOUS MEDIUM A TERTIARY AMINE FROM THE CLASS CONSISTING OF TRIMETHYLAMINE, DIMETHYLBENZYLAMINE, DIBENZYLMETHYLAMINE, DIMETHYLANILINE, BENZYLPHENYLMETHYLAMINE, N,N-DIMETHYLETHANOLAMINE, N-METHYLDIETHANOLAMINE, TRIETHANOLAMINE, AND TETRAMETHYLDIAMINOETHANE WITH AN INSOLUBLE, CROSS-LINKED, RESINOUS PRODUCT WHICH IS A COPOLYMER OF A MIXTURE CONTAINING (A) 90%99.5% OF A GLYCIDYL ESTER HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
61 words
A PROCESS OF PREPARING STRONGLY BASIC ANIONEXCHANGE RESINS CONTAINING POLAR QUATERNARY AMMONIUM GROUIPS WHICH COMPRISES REACTING IN AQUEOUS MEDIUM A TERTIARY AMINE FROM THE CLASS CONSISTING OF TRIMETHYLAMINE, DIMETHYLBENZYLAMINE, DIBENZYLMETHYLAMINE, DIMETHYLANILINE, BENZYLPHENYLMETHYLAMINE, N,N-DIMETHYLETHANOLAMINE, N-METHYLDIETHANOLAMINE, TRIETHANOLAMINE, AND TETRAMETHYLDIAMINOETHANE WITH AN INSOLUBLE, CROSS-LINKED, RESINOUS PRODUCT WHICH IS A COPOLYMER OF A MIXTURE CONTAINING (A) 90%99.5% OF A GLYCIDYL ESTER HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2580901A
Cited
US2606810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |