Patent ID: 7858159

Claim:
A photocurable composition for a liquid crystal sealant, comprising a phosphoric acid (meth)acrylate and a compound represented by formula (1): A 1 -Y 1 —B 1 —Y 2 -A 2 (1) wherein A 1 and A 2 each represents, independently, a monovalent group having a cyclic π-electron conjugated structure; Y 1 and Y 2 each represents, independently, a divalent group represented by formula (4): wherein y 1 and y 2 represent a linking group selected from a single bond, an ester bond, a urethane bond, and —NR—, wherein R represents an alkyl group of 1 to 4 carbon atoms, or a benzyl group, or a group in which one of the linking group and one of an alkylene group of 1 to 2 carbon atoms are linked, wherein the alkylene group is bonded to A 1 or A 2 , in which y 1 is bonded to A 1 or A 2 and y 2 is bonded to B 1 , y 3 represents an alkyltriyl group of 1 to 3 carbon atoms, y 4 represents a single bond, an ether bond, an ester bond, or a urethane bond, y 5 represents a single bond, an alkylene group of 1 to 5 carbon atoms, or an oxyalkylene group of 1 to 6 carbon atoms, wherein 2 to 4 oxyalkylene groups may be contiguous, or a phenylene group, wherein y 4 is invariably a single bond when y 5 is a single bond, and y 6 represents a polymerizable group selected from the group consisting of a (meth)acryloyl group, a (meth)acryloyloxy group, a (meth)acrylamide group, a vinyl group, and a vinyloxy group; and B 1 represents (i) a divalent alicyclic hydrocarbon group, (ii) a divalent aromatic hydrocarbon group, (iii) a divalent heterocyclic group, (iv) a divalent aliphatic hydrocarbon group of 1 to 6 carbon atoms, or (v) a divalent group in which two or more groups selected from the group consisting of a divalent alicyclic hydrocarbon group, a divalent aromatic hydrocarbon group, a divalent heterocyclic group, a divalent aliphatic hydrocarbon group of 1 to 6 carbon atoms, a carbonyl group, an ether group, a thioether group, and a SO 2 group are linked.