US3923745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-dispersible thermosettable cationic resins and paper sized therewith
Assignee: Hercules LLC
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Filing: 1973-08-31
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Granted: 1975-12-02
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Expires: 1993-08-31
Abstract
Abstract Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a diallylamine polymer, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.
Inventors
- 👤 David H Dumas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:58
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/38; C; C08; C08F; C08F8/00; D21H17/03; D21H17/05; D21H17/17
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
34 words
A WATER-INSOLUBLE, WATER-DISPERSIBLE THERMOSETTABLE CATIONIC RESIN DERIVED BY REACTING (I) AN EPIHALOHYDRIN AND (II) A WATER-INSOLUBLE MODIFIED DIALLYLAMINE POLYMER DERIVED BY REACTION OF (A) A DIALLYLAMINE POLYMER CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA
Claim 2
Dependent Claim
34 words
A WATER-INSOLUBLE, WATER-DISPERSIBLE THERMOSETTABLE CATIONIC RESIN DERIVED BY REACTING (I) AN EPIHALOHYDRIN AND (II) A WATER-INSOLUBLE MODIFIED DIALLYLAMINE POLYMER DERIVED BY REACTION OF (A) A DIALLYLAMINE POLYMER CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA
Claim 3
Dependent Claim
33 words
A water-insoluble, water-dispersible thermosettable cationic resin derived by reacting (I) epichlorohydrin and (II) a water-insoluble modified diallylamine polymer derived by reaction of (a) a diallylamine polymer consisting essentially of units of the formula
Claim 4
Dependent Claim
33 words
A water-insoluble, water-dispersible thermosettable cationic resin derived by reacting (I) epichlorohydrin and (II) a water-insoluble modified diallylamine polymer derived by reaction of (a) a diallylamine polymer consisting essentially of units of the formula
Claim 5
Dependent Claim
13 words
The resin of claim 2 wherein the hydrophobizing compound is a ketene dimer.
Claim 6
Dependent Claim
13 words
The resin of claim 2 wherein the hydrophobizing compound is an acyl halide.
Claim 7
Dependent Claim
13 words
The resin of claim 2 wherein the hydrophobizing compound is an acid anhydride.
Claim 8
Dependent Claim
13 words
The resin of claim 2 wherein the hydrophobizing compound is an organic isocyanate.
References Cited (Backward Citations)
US3700623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |