Answer to Question #22466 in Organic Chemistry for dora

Question

what kind of chemical does it make to make a detergent bar paste like when wet?

Answer 1

A process for the production of paste-form, water-free or substantially water-free detergents containing nonionic and anionic surfactants, soap, builders and bleaching agents, characterized in that sodium salts of linear fatty acids containing 12 to 22 carbon atoms are incorporated in the mixture of nonionic and anionic surfactants heated to 70 to 90°C in particle form with a particle size of at most 0.4 mm without the addition of water in quantities of 0.5 to 10% by weight, based on the final detergent, and the remaining constituents of the detergent are incorporated after cooling of this mixture to below 30°C.
A process as claimed in claim 1, characterized in that at least two different nonionic surfactants, preferably fatty alcohol ethoxylates containing 12 to 18 carbon atoms in the fatty alcohol component with different degrees of ethoxylation of 2 to 7 moles of ethylene oxide per mole of fatty alcohol in quantities of 3 to 60% by weight, based on the final detergent, are used in the mixture of nonionic and anionic surfactants.
A process as claimed in claim 1 or 2, characterized in that polycarboxylates and/or phosphonates and/or carbonates and/or silicates are used as builders in quantities of 10 to 50% by weight, based on the final detergent.
A process as claimed in any of claims 1 to 3, characterized in that sodium perborate and/or sodium percarbonate are used as the bleach, if desired in combination with activators such as, for example, tetraacetyl ethylenediamine or diperoxydodecane dioic anhydride in quantities of 10 to 30% by weight, based on the final detergent.
A process as claimed in any of claims 1 to 4, characterized in that other detergent ingredients such as, for example, enzymes, foam inhibitors, optical brighteners, soil suspending agents, fragrances and dyes are additionally incorporated in small quantities.
It also could be alkyl glycosides and/or low-ethoxylated alkyl ether sulphates.