Process for preparing acrylic polymers

Details Process for preparing acrylic polymers Process for preparing acrylic polymers

C - Chemistry, Metallurgy

08

F

C08F 2/20 (2006.01) C08F 20/12 (2006.01)

Patent

CA 2149577

Process for the polymerization in aqueous suspension of acrylic monomers in the presence of a polymeric suspending agent, homopolymer or copolymer of a compound of formula: CH2 = Image (I) wherein: R1 is H or CH3; R2 and R3, equal or different, are H or alkyls C1-C3, optionally branched when possible; M is an alkaline or alkaline-earth metal or ammonium and A is NH, O or NCH3, characterized in that the polymerization aqueous phase is wholly or partly formed by the mother waters obtai- ned after the separation of the acrylic polymer, so as to have a polymerizable suspension containing at least 0,01% by weight and up to about 1% of said suspending agent and at least from 0.05% to 5% by weight of the other products above mentioned obtained during the polymerization.

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