Method for production of acrylate polymer with liquid diluent
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United States of America Patent
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May 20, 2003
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N/A
app pub date -
Jul 18, 2002
filing date -
Jul 18, 2002
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Abstract
A method is provided for the production of a graft copolymer or acrylate polymer blend in the presence of at least one liquid diluent comprising the steps of (1) providing a reaction mixture of at least one A monomer consisting of a monomeric (meth)acrylic acid ester of a non-tertiary alcohol in admixture with at least one liquid diluent which is non-reactive under conditions of free radical polymerization employed, optionally at least one B monomer different from said A monomer, optionally at least one polymeric graft moiety C having a T.sub.g greater than 20.degree. C., and optionally at least one polymeric graft moiety D containing repeat hydrophilic units; (2) forming an acrylate polymer in the presence of the diluent by free radical polymerization under conditions whereby the at least one liquid diluent is non-reactive; and (3) subsequently curing said diluent, and wherein the at least-one diluent is selected from the group consisting of: (a) a ring-opening monomer diluent producing a polymer having a T.sub.g <20.degree. C., and (b) mixtures of said ring-opening monomer diluent and a multifunctional liquid polymer having a T.sub.g <20.degree. C.
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