| abstract |
PROBLEM TO BE SOLVED: To provide a polyoxyalkylene derivative which is used for modifying a bio-related substance which is high in purity and excellent in storage stability and a method for producing a safe and high-purity polyoxyalkylene derivative. SOLUTION: The polyoxyalkylene derivative represented by the formula (1) and a method for producing the same. Embedded image (In the formula, Z is a residue of a compound having 2 to 8 hydroxyl groups, AO is an oxyalkylene group having 2 to 18 carbon atoms, n is 0 to 2000, m is 0 to 2000, 1 ≦ n + m, 2 ≤a + B ≦ 8, 1 ≦ b, R represents a hydrocarbon group having 1 to 30 carbon atoms, and X represents a divalent hydrocarbon group having 3 to 10 carbon atoms. ) |