Water soluble/dispersible and easy removable cationic adhesives and coating for paper recycling
First Claim
1. A recyclable adhesive or adhesive coating that is substantially tacky and forms a pressure-sensitive adhesive which is capable of bonding to a surface upon contact wherein the recyclable adhesive or adhesive coating comprises a polymer which is soluble or dispersible in water and is attracted to fibers during paper recycling wherein the polymer comprisesa) at least 5 to 40 mol % of cationic repeat units;
- b) a cationic monomer compound wherein the cationic monomer compound is 3-methacrylamidopropyltrimethylammonium chloride; and
,c) a second monomer compound copolymerizable with the cationic monomer compound wherein the second monomer compound is n-butyl acrylate.
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Abstract
The present invention is an adhesive or coating composition that is dispersible or dissolvable in water, making it useful in as a coating or adhesive in paper intended for recycling. The composition of the present invention is cationically charged thereby binding with the fibers of the paper slurry and thus, resulting in reduced deposition of adhesives on equipment during the recycling process. The presence of the composition of the present invention results in stronger interfiber bonding in products produced from the recycled fibers.
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Citations
16 Claims
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1. A recyclable adhesive or adhesive coating that is substantially tacky and forms a pressure-sensitive adhesive which is capable of bonding to a surface upon contact wherein the recyclable adhesive or adhesive coating comprises a polymer which is soluble or dispersible in water and is attracted to fibers during paper recycling wherein the polymer comprises
a) at least 5 to 40 mol % of cationic repeat units; -
b) a cationic monomer compound wherein the cationic monomer compound is 3-methacrylamidopropyltrimethylammonium chloride; and
,c) a second monomer compound copolymerizable with the cationic monomer compound wherein the second monomer compound is n-butyl acrylate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification