Patent ID: 8921584

Claim:
A composition containing an intermediate for a water-soluble monomer, that contains a compound (A) represented by the following general formula (1): where, R 0 represents a methyl group; R 1 represents a methylene group, or an ethylene group; each Y 1 is the same or different from one another and represents a C 2-20 alkylene group; and n is the average number of moles of addition of the oxyalkylene group (—Y 1 —O—) and represents a number from 5 to 300, wherein the composition further contains a compound (B) represented by the following general formula (2): where, each R 0 a methyl group; each R 1 is the same or different from one another and represents a methylene group, or an ethylene group; X represents —CH 2 —CH(OR′)—CH 2 —O— or a direct bond; R′ represents a hydrogen atom or a glycidyl group; each Y 1 is the same or different from one another and represents a C 2-20 alkylene group; and n is the average number of moles of addition of the oxyalkylene group (—Y 1 —O—) and each n is the same or different from one another and represents a number from 5 to 300, the compound (B) content is 0.1 to 6.0 mol % with reference to the compound (A) content, and the compound (A) content is 50 to 100 mass % on the basis of 100 mass % of the nonvolatile fraction of the composition containing an intermediate for a water-soluble monomer.