Terephthalate ester copolymer useful as soil release agent in detergent and fabric conditioning compositions and articles. The copolymer has the general formula
Z-[(T-PO)u(T-PEG)v]-T-Z₁ I
wherein Z and Z₁ are chain terminating moieties having the empirical formula II
(PEG₁-X)a(PO-H)b(PEG-H)c II
wherein PEG and PEG₁ are identical or different poly(oxyethylene)oxy moieties each having a molecular weight in the range from about 300 to about 6000; X is C₁-C₄ alkyl or acyl containing from 1 to 4 carbon atoms in the alkyl moiety; T is a terephthaloyl moiety; PO is oxypropyleneoxy; u is from about 0.5 to about 50; v is from about 0.05 to about 20; a is from about 0.2 to about 0.95; b is from 0 to about 0.8; c is from 0 to about 0.8; and b+c is at least about 0.05; wherein u, v, a, b, c represent the average number of the corresponding units; and wherein the T-PO and T-PEG units are randomly distributed along the terephthalate ester backbone.
对苯二甲酸酯共聚物可用作洗涤剂和织物护理剂组合物和物品中的去污剂。这种共聚物的通式为
Z-[(T-PO)u(T-P
EG)v]-T-Z₁ I
其中 Z 和 Z₁ 是具有经验式 II 的链终端分子
(P
EG₁-X)a(PO-H)b(P
EG-H)c II
其中 P
EG 和 P
EG₁ 是相同或不同的聚(氧
乙烯)氧基分子,每个分子的分子量在约 300 至约 6000 之间;X 是 C₁-C₄ 烷基或酰基,烷基中含有 1 至 4 个碳原子;T 是对苯二甲酰基;PO 是氧
丙烯氧基;u 是约 0.5 至约 50;v 是约 0.05至约20;a为约0.2至约0.95;b为0至约0.8;c为0至约0.8;且b+c至少为约0.05;其中u、v、a、b、c代表相应单元的平均数量;且其中T-PO和T-P
EG单元沿
对苯二甲酸酯骨架随机分布。