Methyl Ethyl Ketone → Methacrylic Acid

Participants

Reaction Steps

A solution of 5.0 g of a 9:1 copolymer of methyl methacrylate and methacrylic acid in 10 g of 2-butanone was prepared by warming at 40°, and to this solution was added 5.0 of Epocryl® 303.1, 0.4 g of 2-o-chlorophenyl-4,5-diphenylimidazolyl dimer, 0.3 g of Michler's ketone, 0.02 g of Leuco Crystal Violet, 0.10 g of C.I. Solvent Red Dye #109, and enough 2-ethoxyethanol to give a total of 50 g of solution. The solution was spin-coated onto an anodized aluminum substrate (2000 rpm for 0.75 min.) to give a coating weight of 33.3 mg/dm2. The plate was exposed (0.5 min.) and developed (development time of 30 seconds) as described in Example 1, and the plate was finally rinsed with water. An excellent image was obtained which showed four steps of polymer, and excellent direct prints were obtained from this plate. Exposure of a similar plate for 1.0 minute gave an image which showed five steps of polymer.

Provenance & Evidence