Process for preparing methyl methacrylate polymer

Details Process for preparing methyl methacrylate polymer Process for preparing methyl methacrylate polymer

1994-10-17

1997-02-04

Schoefer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263297, C08F 238

Patent

active

055998887

ABSTRACT:
A process is provided for preparing a high-quality methyl methacrylate polymer by polymerizing a monomer comprising methyl methacrylate as a main component in the presence of a radical polymerization initiator, a chain transfer agent, and a small amount of methanol as a solvent. The polymerization is carried out in a uniform solution at a temperature of 90.degree. to 180.degree. C. so that a monomer conversion of 40 to 90 mol % is attained. According to this process, a methyl methacrylate polymer is obtained which reduces the generation of silver streaks, voids, coloring, odor and the like at the time of thermal molding.

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patent: 4920187 (1990-04-01), Kashihara et al.
patent: 5028674 (1991-07-01), Hatch et al.
Chemical Abstract of JP 62-241905, Abstract No. 56810, 22 Feb. 1988, vol. 108, No. 8, "Solvents for the Polymerization of Methacrylates", Columbus, Ohio.

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