| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-soluble poly(p-vinylphenol) copolymer, and to provide a method for simply producing the copolymer at a low cost. SOLUTION: This water-soluble poly(p-vinylphenol) copolymer is represented by the general formula (1) [R1 and R2 are each H, a 1 to 10C linear hydrocarbon, a 3 to 10C branched or cyclic hydrocarbon, or a 6 to 10C aromatic ring- containing hydrocarbon; R3 is COO; R4 is a 2 to 10C linear or branched oxyalkylene; R5 is a 1 to 10C linear hydrocarbon, a 3 to 10C branched or cyclic hydrocarbon, or a 6 to 10C aromatic ring-containing hydrocarbon; and (p) is 1 to 50].
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