Patent Number: 8,822,561

Title: Curable composition and process for producing cured film

Abstract: A curable composition that is sufficiently cured even without a heating step at high temperature and from which a low dielectric constant cured film excellent in solvent resistance is obtained. A curable composition containing a fluorinated polyarylene prepolymer (A) having a crosslinkable functional group, a compound (B) having a number average molecular weight of from 140 to 5,000, having at least two crosslinkable functional groups and having no fluorine atoms, a copolymer (C) having the following units (c1) and (c2) and a radical polymerization initiator (D): unit (c1): a unit having a fluoroalkyl group having at most 20 carbon atoms, which may have an etheric oxygen atom between carbon atoms, and having no crosslinkable functional group; unit (c2): a unit having a crosslinkable functional group.

Inventors: Ito; Masahiro (Chiyoda-ku, JP), Abe; Takefumi (Chiyoda-ku, JP), Tsuruoka; Kaori (Chiyoda-ku, JP), Eriguchi; Takeshi (Chiyoda-ku, JP)

Assignee: Asahi Glass Company, Limited

International Classification: C08J 3/28 (20060101); C08F 2/46 (20060101); C08G 61/04 (20060101)

Expiration Date: 9/02/12018