Suspension polymerization

C - Chemistry – Metallurgy – 08 – F

Patent

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402/579

C08F 2/20 (2006.01) C08F 12/08 (2006.01) C08F 112/08 (2006.01)

Patent

CA 1078549

ABSTRACT OF THE DISCLOSURE Large particles are obtained in the suspension polymerization of styrene employing carboxymethyl methylcellulose as the suspending agent by employing a relatively small quantity of the suspending agent in the initial phase of polymerization and after 20 to 40 weight percent conversion, additional suspension agent is added. This process produces primarily large polymer particles having a narrow particle size distribution which are particularly useful for molding into relatively large blocks or articles.

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