Patent ID: 9575246
Date: 2017-02-21
CPC Classifications: C08G,C09D,G02B,G02F

Claim:
1. A prepolymer, comprising a condensate formed by a reaction including at least a dehydrohalogenation condensation reaction of a compound (X), a compound (Y), a compound (Z), and an organic compound (B), wherein: the prepolymer comprises crosslinkable functional groups, the compound (X) is at least one compound selected from the group consisting of a compound (X1) that comprises a crosslinkable functional group and a phenolic hydroxy group; a compound (X2) that comprises a crosslinkable functional group and a fluorine atom-substituted aromatic ring, but does not comprise a phenolic hydroxy group or an aromatic ring substituted by a haloalkyl group comprising at most 8 carbon atoms; and a compound (X3) that comprises a crosslinkable functional group and an aromatic ring substituted by a haloalkyl group comprising at most 8 carbon atoms but does not comprise a phenolic hydroxy group; at least one compound (X) is the compound (X1) or the compound (X2), the compound (Y) is a compound represented by the following formula (Y); the compound (Z) is a compound comprising at least 3 phenolic hydroxy groups but no crosslinkable functional group; and the organic compound (B) is an organic compound developing a nonlinear optical effect and comprising a reactive group; wherein n is an integer of from 0 to 3, each of a and b is independently an integer of from 0 to 3, each of Rf 1 and Rf 2 is independently a fluoroalkyl group comprising at most 8 carbon atoms, a nitrile group or a nitro group, and F in the aromatic ring represents that all the hydrogen atoms of the aromatic ring are substituted by a fluorine atom.