Method for the production of polymethyl methacrylate

Details Method for the production of polymethyl methacrylate Method for the production of polymethyl methacrylate

C - Chemistry, Metallurgy

08

F

402/451

C08F 2/02 (2006.01) C08F 4/10 (2006.01) C08F 4/40 (2006.01) C08F 20/12 (2006.01) C08F 220/18 (2006.01)

Patent

CA 1296480

Abstract of the Disclosure: METHOD FOR THE PRODUCTION OF POLYMETHYL METHACRYLATE Improved method for the production of a polymer of a monofunctional (unsaturated) monomer, particularly poly- methyl methacrylate, by a rapid crosslinking polymerization, which comprises polymerizing a mixture of a monofunctional (unsaturated) monomer, selected from methyl methacrylate and a monomer mixture comprising predominantly methyl meth- acrylate which may partially contain a polymer of the monomer (i.e. a syrup of the monomer or monomer mixture), and a polyfunctional (unsaturated) monomer in the presence of (1) a radical polymerization initiator, (2) a reducing compound containing sulfur in the molecule thereof, (3) an amine hydrohalogenate or a quaternary ammonium halide and (4) a copper-containing compound. Said polymer has high mechanical properties and excellent transparency and is useful particularly for the production of optical parts such as conventional lenses, Fresnel's lens, optical recording disc media. prisms. mirrors, etc.

520285

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