Azobisisobutyronitrile → 2-Propenoic acid, butyl ester, polymer with 2-ethylhexyl 2-propenoate

Participants

Reaction Steps

A flask having a reflux condenser and a stirrer and having nitrogen substituted for air inside was charged with 65 parts of methyl methacrylate (to be abbreviated as “MMA” hereinafter), 25 parts of 2-(2′-hydroxy-5′-methacryloxyethylphenyl)benzotriazole (to be abbreviated as “MEBT” hereinafter), 10 parts of 3-methacryloxypropyl-trimethoxysilane (to be abbreviated as “MPTMS” hereinafter), 0.16 part of azobisisobutyronitrile and 200 parts of 1,2-dimethoxyethane, and these contents were mixed and dissolved. Then, the mixture was allowed to react under nitrogen current at 70° C. for 6 hours. The resultant reaction mixture was added to n-hexane for re-precipitation and purification, to give 86 parts of an acrylic copolymer resin (to be abbreviated as “AC-1” hereinafter) having an MMA/MEBT/MPTMS composition ratio of 65/25/10 by weight ratio (85/10/5 by molar ratio). The above copolymer had a weight average molecular weight of 90,000.

Provenance & Evidence