Patent ID: 6770719
Filing Date: 2004-08-03
Classification: C07C,C08F,Y10S

Abstract:
A process for the polymerization of at least one ethylenically unsaturated monomer comprising(a) producing at least one peroxydicarbonate by (i) reacting at least one inorganic peroxide with at least one alkali metal hydroxide in a first vessel to form at least one alkali metal peroxide; (ii) charging into a second vessel equipped with homogenizing means and cooling means at least one haloformate, at least one dispersant, and water; (iii) begin homogenizing the contents of said second vessel; and (iv) metering said at least one alkali metal peroxide produced in said first vessel into said second vessel while continuing to homogenize the contents of said second vessel until substantially all of said alkali metal peroxide has reacted with said haloformate to form peroxydicarbonate; (b) adding to a polymerization reactor at least one ethylenically unsaturated monomer, water, dispersant, and peroxydicarbonate produced in (a); (c) conducting the polymerization reaction to the desired level of conversion of said ethylenically unsaturated monomer to form polymer; (d) discharging said polymer from said polymerization reactor; (e) stripping said ethylenically unsaturated monomer from said polymer; and (f) dewatering and drying said polymer to a free flowing power form, where said first vessel and said second vessel are located exterior of said polymerization reactor.