反应详情

温度

100 °C

A mixture of 64 parts of xylene and 16 parts of n-butanol was heated to 100° C. in the same flask as used in Production Example 1. To this was added dropwise a mixture of 10.2 parts of 2-ethylhexyl methacrylate, 66.8 parts of ethyl acrylate, 11.4 parts of NK ESTER M-90G, 11.6 parts of acrylic acid and 2 parts of t-butylperoxy 2-ethylhexanoate at a constant rate over 3 hours. After the addition, the mixture was kept at the same temperature for 30 minutes. Then a solution of 0.2 parts of t-butyl 2-ethylhexanoate in 16 parts of xylene and 4 parts of n-butanol was added dropwise at a constant rate over 30 minutes. Thereafter the reaction mixture was kept at the same temperature for 1.5 hours. A resin solution called Varnish E having 50.3% solids, a viscosity of 4.7 poise and a resin acid number of 90 was obtained.

1. additionTo this was added dropwise
2. additionAfter the addition
3. waitThereafter the reaction mixture was kept at the same temperature for 1.5 hours