Ultraviolet radiation-cured pressure sensitive adhesives from plant oils or animal fats
AssigneeOregon State University
InventorsKaichang Li, Anlong Li
Life of this patent
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Abstract
A pressure sensitive adhesive construct comprising: (A) a backing substrate; and (B) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes an ultraviolet radiation-cured polymer made from: (a) at least one epoxidized plant oil, at least one epoxidized animal fat, or a mixture thereof; (b) at least one dicarboxylic acid, at least one polycarboxylic acid, or a mixture thereof; and (c) at least one compound that contains both one carbon-carbon double bond (C═C) and at least one carboxylic acid group.
Claims20
A pressure sensitive adhesive composition comprising a crosslinked polyester made by step-growth polymerizing (a) at least one epoxidized plant oil, at least one epoxidized animal fat, or a mixture thereof, (b) at least one dicarboxylic acid, at least one polycarboxylic acid, or a mixture thereof, and (c) at least one compound that contains both one carbon-carbon double bond (C═C) and at least one carboxylic acid group to form a polyester that includes 0.05 to 2 pendant C═C bonds per polyester molecule;
- adding at least one photoinitiator;
- and subjecting the resulting resin to ultraviolet radiation such that the at least one photoinitiator generates free radicals to form the crosslinked polyester.
Dependencies are inferred from the claim text.