Graft copolymers

Details Graft copolymers Graft copolymers

C - Chemistry, Metallurgy

08

F

400/2026, 400/30

C08F 257/02 (2006.01) C08F 285/00 (2006.01) C08L 33/12 (2006.01) C08L 51/00 (2006.01)

Patent

CA 1036740

ABSTRACT OF THE DISCLOSURE The Specification describes particulate graft polymers which can be dispersed in methyl methacrylate polymers or monomer compositions for the production thereof to provide translucent mouling compositions. The particles of the graft copolymers comprise a core of a cross-linked emulsion copolymer containing a major proportion of units of 8 styrene monomer, the core having a particle size greater than 0.8 microns and being provided with a coating of a polymer containing a major proportion of units of methyl methacrylate grafted onto the emulsion copolymer. The particulate graft copolymers can be added to granulates or melts of the methyl methacrylate polymers or monomer compositions. The use of these graft copolymers provides moulding compositions which retain their translucency even when subjected to such operations as injection moulding or extrusion.

188629

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