Patent ID: 6013617
Filing Date: 2000-01-11
Classification: C11D

Abstract:
Storage-stable, free-flowing, dense and rapidly dissolving detergency cobuilder particulates having a non-bulk density ranging from about 0.7 to 1.5 g/cm.sup.3 and a median particle diameter ranging from about 0.4 to 1.8 mm, consisting essentially of dried powdery cogranulates, said powdery cogranulates consisting essentially of an aqueous solution of sodium or potassium silicate sorbed onto an at least partially hydrated pulverulent sodium or potassium carbonate crystalline support substrate therefor, at least 30% of the silicon atoms of said sodium or potassium silicate being in the Q.sub.2 and Q.sub.3 configurations, said Q.sub.2 /Q.sub.3 sodium or potassium silicate having an SiO.sub.2 /M.sub.2 O molar ratio ranging from about 1.6 to 3.5, wherein M is sodium or potassium, the amount of said hydrated carbonate support substrate being such that residual water associated with said sodium or potassium silicate provides a ratio by weight of silicate, expressed as dry basis/water associated with said silicate, ranging from about 100/120 to 100/33, the total amount of water present in said powdery cogranulates ranging from 5% to 25%, and said powdery cogranulates having a silicate content ranging from about 8% to 38% by weight and a carbonate content ranging from about 47% to 87% by weight.