| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonionic polyester resin, a soil release agent or anti-refouling agent containing the nonionic polyester resin, an aqueous solution preparation, a liquid detergent and a cleaning method.SOLUTION: A nonionic polyester resin contains constitutional units each represented by the formula (a), (b) and (c) and the content of the constitutional unit (a) is 10 to 20 mass%, the content of the constitutional unit (b) is 70 to 85 mass%, the content of the constitutional unit (c) is 0.1 to 10 mass% and the content of a constitutional unit (d) represented by the formula (d) is 2% or less. I represents a number of 6 to 200, R represents an alkylene group having branched chain and 3 to 6 carbon atoms, m represents a number of 1 to 6 and n represents a number of 1 or 2. |
