Patent ID: 7820777

Claim:
A composition comprising: a polymerized substance of a compound (I), wherein the compound (I) contains m numbers of RSi(O 0.5 ) 3 units, wherein m represents an integer of from 8 to 16; and each R independently represents a non-hydrolysable group, provided that at least two among the R groups represent groups which contain a vinyl group or an ethynyl group, and wherein each one of the RSi(O 0.5 ) 3 units is connected to another RSi(O 0.5 ) 3 unit by sharing an oxygen atom with the RSi(O 0.5 ) 3 unit, so as to form a cage structure, and a surfactant in an amount of from 0.01 to 1 mass % with respect to the entire amount of the composition, wherein within a solid component contained in the composition, a polymerized substance formed by a reaction of the compound (I) represents 60 mass % or more, and wherein the surfactant has a structure that includes the following chemical formula: wherein R 1 represents a hydrogen atom or an alkyl group containing 1 to 5 carbon atoms; x represents an integer of from 1 to 20; and m and n each independently represents an integer of from 2 to 100; in which each R 1 may be the same or different.