Vinyl polymerization particle size control

Details Vinyl polymerization particle size control Vinyl polymerization particle size control

C - Chemistry, Metallurgy

08

F

C08F 2/44 (2006.01) C08F 2/20 (2006.01) C08F 251/02 (2006.01)

Patent

CA 2053631

KROON 2 551 ABSTRACT OF THE DISCLOSURE VINYL POLYMERIZATION PARTICLE SIZE CONTROL Particle Size Distribution (PSD) of polymer produced from styrene, methylmethacrylate, vinyl chloride, diethylaminoethylmethacrylate and butyl methacrylate vinyl monomers is controlled above 60% with less than 0.1% latex production using tri-calcium phosphate (TCP) in combination with a thickening agent which is one or more: (a) hydroxyethylcellulose molecule weight 300,000 to 1,000,000; (b) hydrophobically modified hydroxyethylcellulose molecular weight 100,000 to 800,000; (c) carboxymethylmethylcellulose, carboxymethylmethylhydroxyethylcellulose or carboxymethylmethylhydroxypropylcellulose molecular weight 20,000 to 140,000.

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