Cocontinuous polymer of methyl methacrylate and polymer of...

Details Cocontinuous polymer of methyl methacrylate and polymer of... Cocontinuous polymer of methyl methacrylate and polymer of...

C - Chemistry, Metallurgy

08

F

400/6563

C08F 255/00 (2006.01) C08F 255/02 (2006.01) C08F 263/04 (2006.01) C08L 23/08 (2006.01) C08L 33/12 (2006.01) C08L 51/00 (2006.01)

Patent

CA 1111988

COCONTINUOUS POLYMER OF METHYL METHACRYLATE AND POLYMER OF ETHYLENE-VINYL ACETATE ABSTRACT OF THE DISCLOSURE A composition comprising a cocontinuous inter- penetrating network of: (A) a polymer of at least 50 weight percent methyl methacrylate units, and (B) a copolymer of ethylene and vinyl acetate, is prepared according to a process comprising the following steps: (i) dissolving a copolymer of ethylene and vinyl acetate in a monomer system comprising at least 50 weight percent methyl methacrylate, and (ii) adding to the resultant solution a free radical catalyst and reducing the temperature of the solution to below 55°C while polymerizing the major portion of said monomer system. The resultant composition has high impact resistance, and is useful for applications similar to those to which acrylic and polycarbonate sheets are put.

289022

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