| abstract |
The fiber processing agent and polyester short fiber which are favorable in the operation property at the time of high pressure water flow process of a polyester short fiber, and excellent in the durability and hydrophilicity of the nonwoven fabric after high pressure water flow process are obtained.n n n The present invention condensation-polymerizes at least one selected from aromatic dicarboxylic acids, aliphatic dicarboxylic acids having 4 to 22 carbon atoms, and ester ester derivatives thereof, and alkylene glycol and polyalkylene glycol as A component. A polyester compound obtained by condensation polymerization of at least one selected from a polyoxyalkylene monool, an aromatic dicarboxylic acid and an ester-forming derivative thereof with an alkylene glycol as a B component, and an alkyl group having 4 to 4 carbon atoms It contains the alkyl phosphate ester salt of 6, and the content rate of A, B, and C component consists of a specific ratio, The fiber processing agent, the polyester fiber which gave this processing agent, and the polyester fiber which gave this processing agent are high pressure water flow. It is a nonwoven fabric obtained by processing. |