US3945983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble copolyamide from (1) polyalkylene polyamine, (2) dicarboxylic acid, (3) diamine or lactam or amino acid and (4) epichlorohydrin
Assignee: Dow Produktions und Vertriebs GmbH and Co OHG
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Filing: 1973-02-26
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Granted: 1976-03-23
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Expires: 1993-02-26
Abstract
Abstract A process for the production of an anchoring agent of copolyamide resin by condensing certain amounts of polyalkylene polyamines, dicarboxylic acids and at least one member of the group consisting of diamine, ε-caprolactam and amino caproic acid, and then reacting the secondary amino groups of said copolyamide partially with epichlorhydrin for crosslinking.
Inventors
- 👤 Lutz Hoppe
- 👤 Rudolf Behn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:23
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/48; C08G65/00; C08G65/02; C08G65/26; C08G65/2618; C08G65/2633; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31779; Y10T428/31783
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
Water-soluble resinous copolyamide with improved storage stability and good ability to anchor polyvinylidene halide copolymers to cellulose-containing substances, consisting essentially of resinous condensation product of 35-45% by weight of polyalkylene polyamine, 45-60% by weight of dicarboxylic acid selected from the group consisting of adipic acid, azelaic acid, sebacic acid and terephthalic acid; and 5-20% by weight of at least one member of the group consisting of saturated aliphatic diamine, ε-caprolactam and amino caproic acid; wherein 1 mol equivalent of each of the secondary amino groups of said copolyamide is reacted with from 0.1-0.4 mol of epichlorohydrin for crosslinking; wherein the percent by weight of reactants is based on the total weight of reactants before reaction with epichlorohydrin.
Claim 2
Dependent Claim
117 words
Water-soluble resinous copolyamide with improved storage stability and good ability to anchor polyvinylidene halide copolymers to cellulose-containing substances, consisting essentially of resinous condensation product of 35-45% by weight of polyalkylene polyamine, 45-60% by weight of dicarboxylic acid selected from the group consisting of adipic acid, azelaic acid, sebacic acid and terephthalic acid; and 5-20% by weight of at least one member of the group consisting of saturated aliphatic diamine, ε-caprolactam and amino caproic acid; wherein 1 mol equivalent of each of the secondary amino groups of said copolyamide is reacted with from 0.1-0.4 mol of epichlorohydrin for crosslinking; wherein the percent by weight of reactants is based on the total weight of reactants before reaction with epichlorohydrin.
Claim 3
Dependent Claim
45 words
The water-soluble resinous copolyamide of claim 1 wherein the said diamine is NH.sub.2 -- R -- NH.sub.2 in which R is a. a mixture of ##EQU2## or -- (CH.sub.2).sub.m -- (b) wherein m is an integer of 2-6; or a mixture of (a) and (b).
Claim 4
Dependent Claim
17 words
The water-soluble resinous copolyamide of claim 1 wherein the said diamine to be polycondensed is hexamethylene diamine.
Claim 5
Dependent Claim
27 words
The water-soluble resinous copolyamide of claim 1 wherein a copolyamide obtained by condensation of a diethylene triamine, adipic acid and ε-caprolactam is reacted with epichlorohydrin for crosslinking.
Claim 6
Dependent Claim
19 words
The water-soluble resinous copolyamide of claim 1 wherein said polyalkylene polyamine is diethylene triamine, triethylene tetramine or tetraethylene pentamine.
Claim 7
Dependent Claim
14 words
The water-soluble resinous copolyamide of claim 1 wherein said polyalkylene polyamine is diethylene triamine.
References Cited (Backward Citations)
US2926154A
Cited
US3329657A
Cited
US3250664A
Cited
US3442754A
Cited
US3640840A
Cited
US3761350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |