Hydrophilic hot melt adhesives
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsThomas F. Kauffman, Gary Raykovitz, Lydia Wagner, Matthew Sharak, Charles Paul
Life of this patent
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Abstract
A hot melt adhesive composition comprising 5 to 50% by weight hydroxypropyl cellulose, 5 to 40% by weight plasticizer of which up to 85% may be a water insoluble plasticizer; 20 to 70% by weight tackifying resin; 0 to 40% by weight polar wax; 0 to 30% by weight compatible polymer; and, 0 to 3% by weight stabilizer.
Claims10
A hot melt pressure sensitive adhesive composition consisting essentially of 5 to 50% by weight hydroxypropyl cellulose;
- a styrene block copolymer present in an amount up to 30% by weight;
- 5 to 40% by weight plasticizer, about 85% of which may be a water insoluble plasticizer, 20 to 70% by weight tackifying resin;
- and 0 to 3% by weight stabilizer, the components totaling 100% by weight.
A hot melt pressure sensitive adhesive which loses tack when immersed in water, said adhesive consisting essentially of 10 to 50% by weight hydroxypropyl cellulose;
- a styrene block copolymer present in an amount up to 30% by weight;
- 5 to 40% by weight plasticizer, about 85% of which may be a water insoluble plasticizer;
- 20 to 70% by weight tackifying resin;
- and 0 to 3% by weight stabilizer, the components totaling 100% by weight.
Dependencies are inferred from the claim text.