SOIL RELEASE AGENTS FOR GRANULAR LAUNDRY DETERGENTS

摘要

Improved soil release agents for granular laundry detergents, typically used at levels as low as about 1% of a fully-formulated anionic surfactant-containing granular detergent, are reaction products of trans esterifying and oligomerizing mixtures of monomers having the functions MO3SC6H4C(O)-, M'O3SC6H3{C(O)O-}2, -(O)CC6H4C(O)-and -OCH2CH2O- wherein M and M'; are independently selected from lithium, potassium and sodium, more pref erably sodium; said mixtures having mole ratio of MO3SC6H4C(O)- to -(O)CC6H4C(O)- of from about 0.2:1 to about 1.4:1 , mole ratio of MO3SC6H4C(O)- to M'O3SC6H3{C(O)O-}2 of from about 0.67:1 to about 20:1 and mole ratio of MO3SC6H4 C(O)- to -OCH2CH2O- of from about 0.007:1 to about 0.51:1 and being substantially free from monomers of form ula HOROH wherein R is propylene or higher alkyl.