| 摘要 |
A curable composition is provided to ensure excellent heat resistance and toughness and to control the hardened degree by comprising polyarylate having an epoxy group and a cyanate ester resin. A curable composition comprises polyarylate having an epoxy group and a cyanate ester resin. The polyarylate having an epoxy group comprises a repeating unit represented by chemical formula 1. In chemical formula 1, x and y are a molar ratio, x+y=1, x>=0, y>0; a and b are identical or different and are independently an integer of 1-4; c and d are identical or different and are independently an integer of 1-3; R^1 and R^2 are identical or different and are selected from the group consisting of a hydrogen atom, hydrogen atom, halogen atom, alkyl, arylalkyl, alkenyl, arylalkenyl, aryl, alkylaryl, alkenylaryl, nitrile and alkoxy; at least one of R^3 and R^4 has an epoxy group, and the remainder is selected from the group consisting of hydrogen, C2-10 alkyl, C3-12 cycloalkyl, and C7-20 alkylaryl; W^1 and W^2 are selected from the group consisting of a direct bond, oxygen, sulfur, alkylene, cycloalkenylene, fluorine, sulfonyl, sulfinyl and carbonyl; and Ar is selected from the group consisting of phenylene, naphthylene and biphenylene.
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