US2926154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic thermosetting polyamide-epichlorohydrin resins and process of making same
Assignee: Hercules Powder Co
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Filing: 1959-03-03
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Granted: 1960-02-23
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Expires: 1979-03-03
Abstract
No abstract record available.
Inventors
- 👤 Gerald I Keim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:19
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/55; C; C08; C08G; C08G69/00; C08G69/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS OF PREPARING AN AQUEOUS SOLUTION OF A CATIONIC THERMOSETTING RESIN WHICH COMPRISES REACTING A POLYALKYLENE POLYAMINE HAVING TWO PRIMARY AMINE GROUPS AND AT LEAST ONE SECONDARY AMINE GROUP WITH A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF DIGLYCOLIC ACID AND C3 TO C8 SATURATED ALIPHATIC DICARBOXYLIC ACIDS TO FORM A WATER-SOLUBLE LONG CHAIN POLYAMIDE CONTAINING SECONDARY AMINE GROUPS, THE MOLE RATIO OF POLYALKYLENE POLYAMINE TO DICARBOXYLIC ACID BEING FROM ABOUT 0.8 TO 1 TO ABOUT 1.4 TO 1, AND THEN REACTING THE POLYAMIDE IN AQUEOUS SOLUTION WITH EPICHLOROHYDRIN IN A MOLE RATIO OF EPICHLOROHYDRIN TO SECONDARY AMINE GROUPS OF SAID POLYAMIDE OF FROM ABOUT 0.5 TO 1 TO ABOUT 1.8 TO 1 TO FORM AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CATIONIC THERMOSETTING RESIN.
Claim 2
Dependent Claim
126 words
A PROCESS OF PREPARING AN AQUEOUS SOLUTION OF A CATIONIC THERMOSETTING RESIN WHICH COMPRISES REACTING A POLYALKYLENE POLYAMINE HAVING TWO PRIMARY AMINE GROUPS AND AT LEAST ONE SECONDARY AMINE GROUP WITH A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF DIGLYCOLIC ACID AND C3 TO C8 SATURATED ALIPHATIC DICARBOXYLIC ACIDS TO FORM A WATER-SOLUBLE LONG CHAIN POLYAMIDE CONTAINING SECONDARY AMINE GROUPS, THE MOLE RATIO OF POLYALKYLENE POLYAMINE TO DICARBOXYLIC ACID BEING FROM ABOUT 0.8 TO 1 TO ABOUT 1.4 TO 1, AND THEN REACTING THE POLYAMIDE IN AQUEOUS SOLUTION WITH EPICHLOROHYDRIN IN A MOLE RATIO OF EPICHLOROHYDRIN TO SECONDARY AMINE GROUPS OF SAID POLYAMIDE OF FROM ABOUT 0.5 TO 1 TO ABOUT 1.8 TO 1 TO FORM AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CATIONIC THERMOSETTING RESIN.
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |