Interpenetrating polymer network for paper and paperboard coating compositions
AssigneeBuckman Laboratories International, Inc.
InventorsSamuel TEKOBO, Zhiyi ZHANG
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Abstract
An interpenetrating polymer network (IPN) is described, as well as coating compositions including a combination of a starch solution and the IPN for coating a paper or paperboard. The IPN includes a first copolymer of acrylamide and acrylic acid with a second copolymer of acrylamide and acrylic acid. The first copolymer and the second copolymer are different from each other at least with respect to average molecular weight. Processes of making the IPN and the coating composition as well as coating the paper or paperboard with the coating composition are also described.
Claims25
An interpenetrating polymer network (IPN) comprising a) a first copolymer that is the reaction product of i) a polymerizable composition comprising at least one acrylamide monomer and at least one acrylic acid monomer and ii) a reactive prepolymer of acrylamide and acrylic acid and b) a second co-polymer of at least acrylamide and acrylic acid, wherein the first copolymer and the second copolymer are different from each other at least with respect to average molecular weight.
Dependencies are inferred from the claim text.