| abstract |
Described are polyesters comprising the structural units of the formula Ia and end groups of the formula II and of the formula III or end groups of the formula II and of the formula IV or end groups of the formula II, III and IV or containing the structural units of the formula Ia and of the formula Ib and end groups of Formula II and the formula III or end groups of the formula II and the formula IV or end groups of the formula 11, III and IV wherein R is C 1 -C 4 -alkyl, M is hydrogen or a monovalent or divalent cation, i is 1 or 2, x is 0.5 or 1 and the product i x = 1, and z is an integer from 3 to 35.n n n The polyesters of the invention are characterized by a very good soil removal effect and can be used as soil-release polymers in detergents, care and cleaning agents. |