| 摘要 |
The invention relates to reaction products of glycols, diglycols, higher glycols or glycerol with alpha-hydroxycarboxylic acids in a molar ratio of 1:2 or higher, especially conforming to the general formula (V) where R is hydrogen or a C1-3 alkyl group, preferably methyl, nx is from 1 to 5, preferably from 1 to 3, n is 1 or 2 and when n=1 the radical R'' is C1-4 alkylene, preferably ethylene, x is defined as x' and y is not less than 1, preferably from 1 to 5, especially 1 or 2, and when n=2 the radical R'' is a glycerol radical, x is defined as x'' and y is 1. The invention further relates to the use of the (poly)hydroxycarboxylic acid (poly)glycol esters or (poly)hydroxycarboxylic acid glyceryl esters as acid donors and for controlling the pH in textile treatment processes.
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