| abstract |
(57) [Summary] [Structure] The following general formula (1) [In the formula, R represents a straight-chain or branched alkyl group having 1 to 18 carbon atoms, and X and Y are the same or different and are -C. H 2 CH 2 O -, - CH (CH 3) CH 2 O- or - CH 2 CH (CH 3 ) O—, G is the same or different and represents a sugar residue having 5 or 6 carbon atoms, and n and n ′ have an average value of 0 ≦ n ≦ 10 and 0 ≦ n ′ ≦ 10. Indicates n ″ represents a number whose average value is 1 ≦ n ≦ (3x + 1) or less, The average value of x is 1 ≦ x ≦ 10. ] A penetrant for alkaline weight reduction processing of polyester fibers comprising at least one kind of alkyl glycosides represented by [Effect] It has become possible to provide a penetrant capable of finishing a polyester fiber in a soft texture without having an adverse effect on the environment. |