Free radical initiated polymerization of polymerizable ethylenically unsaturated monomer component in the presence of hydrogen peroxide
AssigneePPG Industries, Inc.
InventorsSuryya K. Das, Rostyslaw Dowbenko
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Abstract
A method of preparing a free radical initiated addition polymer in the presence of hydrogen peroxide solution is disclosed. The hydrogen peroxide solution is added incrementally to the reaction mixture during the course of the polymerization with water and low boiling organic solvents being continuously removed from the reaction mixture. The invention enables the polymerization to occur at high temperatures which is conducive to the preparation of low molecular weight polymers.
Claims16
A method of preparing a free radical initiated addition polymer by polymerizing a polymerizable ethylenically unsaturated monomer component in the presence of a solution of hydrogen peroxide characterized in adding an aqueous hydrogen peroxide solution to the polymerizing monomer component incrementally throughout the course of the polymerization and simultaneously removing low boiling organic solvents and water from the polymerizing monomer component as the aqueous hydrogen peroxide solution is being added;
- the resulting free radical initiated addition polymer having a number average molecular weight of no greater than 8000.
A method of preparing a free radical initiated addition polymer by polymerizing a polymerizable ethylenically unsaturated monomer component dissolved in an organic solvent, said polymerization being conducted in the presence of aqueous hydrogen peroxide, the improvement comprising adding the aqueous hydrogen peroxide to the polymerizing monomer component incrementally throughout the course of the polymerization and simultaneously removing water from the polymerizing monomer component as it is being added with the aqueous hydrogen peroxide, said resultant free radical initiated addition polymer having a number average molecular weight of no greater than 8000.
Dependencies are inferred from the claim text.