Method for the production of polymethacrylates

Details Method for the production of polymethacrylates Method for the production of polymethacrylates

C - Chemistry, Metallurgy

08

F

402/520

C08F 2/00 (2006.01) C08F 220/14 (2006.01) C08F 265/06 (2006.01)

Patent

CA 1296482

Abstract The present invention is directed to an improved method for the production of polymethacrylates by rapid polymerization, which comprises polymerizing an unsaturated monomer selected from a methacrylate and a monomer mixture comprising predominantly a methacrylate which may partially contain a polymer of the monomer (i.e. a syrup of the monomer or monomer mixture) in the presence of a radical polymerization initiator, a reducing compound containing sulfur in the molecule thereof, a copper-containing compound and a specific tertiary amine hydrohalogenate or a quaternary ammonium halide. Said polymethacrylates can form molded products having excellent mold release characteristics and are particularly useful in the production of optical parts such as conventional lenses, Fresnel's lens, optical recording disc media, prisms, mirrors, etc.

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