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US 5,633,309 AGranted
Creping adhesives containing oxazoline polymers
AssigneeHoughton International, Inc.
InventorsJoseph F. Warchol, Cynthia D. Walton-Bongers
Life of this patent
Estimating the term…
Abstract
A creping adhesive containing about 1% to about 25% polyoxazoline by weight, which imparts softness and resistance to bleaching, to a cellulosic web, and methods of using same are provided.
Claims17
A creping adhesive concentrate comprising:
- (a) about 35 percent by weight of aqueous polyamide-epichlorohydrin resin, said resin being the reaction product of about 5 percent by weight epichlorohydrin and about 20 percent by weight of the aqueous polyamide produced from a reaction of about 18 percent by weight caprolactam, 30 percent by weight carboxylic acid, about 25 percent by weight of an amine, and water;
- (b) between about 1 percent by weight and 25 percent by weight of an oxazoline polymer of the structure:
- ##STR3## where R is selected from the group consisting of an aryl group containing from 6 to 11 carbon atoms or an alkyl group containing from 1 to 11 carbon atoms, and n is an integer which provides said polymer with a molecular weight of from about 5000 to about 1,000,000;
- and
- (c) the balance water.
2 more elements
A creping adhesive concentrate comprising about 1 percent to about 25 percent by weight of solids in water, said solids comprising an oxazoline polymer which is dispersable in water and a cross-linked polyamide-epihalohydrin resin.
Dependencies are inferred from the claim text.