Composition for optical imprint and method for producing pattern using the same

A composition for optical imprint comprising:

• a polysiloxane;
• an organic solvent;
• and
• a polymerization initiator,
• wherein the polysiloxane consists of a polysiloxane represented by formula (a3) below:
• wherein R1 represents a group containing an ethylenic double bond;
• R2 represents an aryl group having 6 to 15 carbon atoms which may have a substituent;
• R3 represents an alkyl group having 1 to 6 carbon atoms;
• subscripts p, q, and r represent mole percentages of the structural units referred to by the subscripts based on the total moles of structural units in the polysiloxane;
• the percentage p is 30% to 85% by mole;
• the percentage q is 15% to 70% by mole;
• and the percentage r is 0% to 40% by mole;
• provided that the sum of the percentages p, q, and r is 100% by mole, and the percentage r is not higher than the percentage p,
• and wherein the composition for optical imprint does not comprise an alkoxysilane.