Patent ID: 9611590
Date: 2017-04-04
CPC Classifications: C08G,C08L,C09J,D21H

Claim:
1. A creping adhesive, comprising: a first thermosetting polyamidoamine-epihalohydrin resin comprising a reaction product of a first epihalohydrin and a first polyamidoamine containing one or more secondary amine groups, wherein the first thermosetting polyamidoamine-epihalohydrin resin has a weight average molecular weight of about 800,000 to about 1,200,000, comprises about 2 moles to about 500 moles of reactive groups per mole of the first thermosetting polyamidoamine-epihalohydrin resin, and has a molar ratio of the first epihalohydrin to the secondary amine groups in the first polyamidoamine of about 0.002:1 to about 0.1:1, and wherein the reactive groups of the first thermosetting polyamidoamine-epihalohydrin resin comprise azetidinium groups, pendant halo-groups, or both; a first thermoplastic polyamidoamine-epihalohydrin resin comprising a reaction product of a second epihalohydrin and a second polyamidoamine containing one or more secondary amine groups, wherein the first thermoplastic polyamidoamine-epihalohydrin resin has a weight average molecular weight of about 40,000 to about 200,000, and has a molar ratio of the second epihalohydrin to the secondary amine groups in the second polyamidoamine of about 0.001:1 to about 0.1:1; and one or more re-wetting agents, wherein the creping adhesive comprises about 5 wt % to about 80 wt % of the first thermosetting polyamidoamine-epihalohydrin resin, about 15 wt % to about 90 wt % of the first thermoplastic polyamidoamine-epihalohydrin resin, and about 0.1 wt % to about 30 wt % of the one or more re-wetting agents, and wherein all weight percent values are based on the combined weight of the first thermosetting polyamidoamine-epihalohydrin resin, the first thermoplastic polyamidoamine-epihalohydrin resin, and the one or more re-wetting agents.