Patent ID: 6114407
Filing Date: 2000-09-05
Classification: A61L,C08B,C08F,C08J,D06M,D21C

Abstract:
A sulfonated polymer prepared by the method comprising:contacting the polymer with a gaseous mixture consisting essentially of sulfur dioxide and a source of oxygen, in which the mixture has a mole ratio of sulfur dioxide to the source of oxygen which is equal to or greater than a stoichiometric ratio; andcontinuously exposing the polymer and gaseous mixture to ultraviolet light while the polymer is in contact with the gaseous mixture; wherein contacting and exposing are carried out at a pressure of less than 1 atmosphere;wherein said polymer is selected from the group consisting of alkyd resins, allylic resins, amino resins, epoxy resins, phenolic resins, polyesters, silicones, urethanes, polyacetals, acrylic and methacrylic polymers, polyamides, parylenes, polyaryl sulfones, polyesters, polyaryl sulfides, polyimides, polyethylene, polypropylene, poly(1-butene), poly(2-butene), poly(1-pentene), poly(2-pentene), poly(3-methyl-1-pentene), poly(4-methyl-1-pentene), 1,2-poly-1,3-butadiene, 1,4-poly-1,3-butadiene, polyisoprene, polyacrylonitrile, poly(vinyl acetate), polystyrene, and copolymers thereof.