Production of aqueous solutions of cationic thermosetting resins

Details Production of aqueous solutions of cationic thermosetting resins Production of aqueous solutions of cationic thermosetting resins

1979-09-25

1981-09-01

Pertilla, Theodore E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

162164EP, 260 292N, C08L 6300

Patent

active

042871107

ABSTRACT:
A durable aqueous solution of a thermosetting resin having a relatively high solid content which imparts a high degree of wet strength to paper, is produced by the reaction of an aliphatic dicarboxylic acid with a polyalkylenepolyamine to form a polyamidopolyamine, which is successively subjected to reaction with epichlorohydrin, the first reaction being carried out using a molar ratio of aliphatic dicarboxylic acid to polyalkylenepolyamine of 1:1.0 to 1.2 and continued until the viscosity at 25.degree. C. of 50% aqueous solution of resulting polyamidopolyamine reaches 400 to 1,000 cps, and the second reaction being carried out using epichlorohydrin in an amount of 1.6 to 1.7 moles per mole of the polyamide secondary amine and continued until the viscosity at 25.degree. C. of 15% aqueous solution of the resulting product reaches 30 to 150 cps.

REFERENCES:
patent: 2926154 (1960-02-01), Keim
patent: 2961347 (1960-11-01), Floyd
patent: 3197427 (1965-07-01), Schmalz
patent: 3332901 (1967-07-01), Keim
patent: 3989659 (1976-11-01), Aldrich et al.

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