Zeolite-based phosphate-free detergent builder composition
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsJoerg Poethkow, Horst Upadek, Eduard Smulders
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Abstract
Phosphate-free builder combinations containing zeolite, crystalline layer silicates corresponding to formula (I) NaMSi.sub.x O.sub.2x+1..sub.y H.sub.2 O, in which M is sodium or hydrogen, x is a number of 1.9 to 4 and y is a number of 0 to 20, and polymeric polycarboxylates may be used separately as water softeners or in detergents. Their primary and secondary detergent properties are so favorable that there is little or no need to use phosphonates.
Claims15
A phosphate-free builder composition consisting essentially of from 60 to 96% by weight of zeolite, from 2 to 16% by weight of polymeric polycarboxylate, and from 2 to 25% by weight of crystalline layer silicate corresponding to formula (I) NaMSi.sub.x O.sub.2x+1..sub.y H.sub.2 O, wherein M is sodium or hydrogen, x is a number of 1.9 to 4 and y is a number of 0 to 20.
A detergent composition containing from 31% to 60% by weight of a phosphate-free builder composition consisting essentially of from 60 to 96% by weight of zeolite, from 2 to 16% by weight of polymeric polycarboxylate, and from 2 to 25% by weight of crystalline layer silicate corresponding to formula (I) NaMSi.sub.x O.sub.2x+1..sub.y H.sub.2 O, wherein M is sodium or hydrogen, x is a number of 1.9 to 4 and y is a number of 0 to 20.
A phosphate-free detergent composition consisting essentially of from 20 to 40% by weight of zeolite, from 1 to 15% by weight of crystalline layer silicate corresponding to formula (I) NaMSi.sub.x O.sub.2X+1..sub.y H.sub.2 O wherein M is sodium or hydrogen, x is a number of 1.9 to 4 and y is a number of 0 to 20, from 1 to 9% by weight of polymeric polycarboxylate, and from 2 to 8% by weight of amorphous alkali metal silicate having a Na.sub.2 to SiO.sub.2 ratio of from 1:2.0 to 1:3.3.
Dependencies are inferred from the claim text.