Method for producing polystyrene composition

Details Method for producing polystyrene composition Method for producing polystyrene composition

C - Chemistry, Metallurgy

08

F

400/3060

C08F 4/48 (2006.01) C08F 279/02 (2006.01)

Patent

CA 1049189

Abstract of the Disclosure A novel high-impact polystyrene composition superior to conventional high-impact polystyrene compo- sition, in low temperature high-impact properties, tensile strength, processability, toughness, stiffness, etc. can be obtained by a radical polymerization of a mixture of 1) 2 - 20% by weight of a random copolymer having a composition of continuously and gradually reduced styrene content along the polymer chain of the copolymer which is obtained by the solution polymerization of butadiene and styrene in the presence of a lithium base catalyst and 2) 80 - 98% by weight of styrene, carried out in bulk polymerization manner or in a manner in which bulk and suspension polymerizations are used in series. The novel polystyrene composition can be used to produce injection molded or extrusion-molded porducts of various shapes.

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