Detergency mechanisms, nonionic surfactants

The described mechanisms of detergency are put into practice by using synthetic micelle-forming surfactants, among which the mixtures of anionic and nonionic surfactants (particularly alkylsulfates and oxyethylenated alcohols) make 10 to 40 % of the total detergent formulation. Cationic surfactants (alkylamines) that are also included into synthetic detergent formulations may contribute up to 5% of the total amount of formulation. These substances reveal biocidal action and control micelle formation by forming mixed micelles. 

A great deal of work has also been carried out on the biodegradation of nonionic surfactants, in this case the ethoxylates used in detergents and cleaning agents. However, the metabolic mechanism has not been investigated to the same extent as with linear alkylbenzenesulfonate. The microbial attack takes place on the ethylene oxide chain and also on the alkyl group of the molecules. 

Uses Surfactant for mod. built alkaline systems such as caustic and/or alkaline cleaners, mechanical dishwashing detergents, metal cleaners, alkaline plating baths, hard surf, cleaners, paints/coatings, textile scouring, laundry detergents, steam cleaners, food plant cleaners, oven cleaners, CIP cleaners, and syn. coolants hydrotrope for nonionics in alkaline systems... 

In many applications, one found it necessary to employ surfactants that were nonionic. For example, nonionic detergents as used in washing clothes are much different in structure and properties than those used in dish-washing machines. In washing machines, foam is crucial as it helps in keeping the dirt away from clothes once it has been removed. On the other hand, in machine dishwashing, one does not need any foam. This arises from the fact that foam will hinder mechanical effect of dish-washing process. 

Uses Detergent, wetting agent, emulsifier, dispersant, solubilizer, and defoamerfor mechanical dishwashing formulations, rinse additives, cold phosphate cleaners, carwash formulations, metal spray cleaners, and other hard surf, cleaners Features Low foaming compat. with other nonionic, cationic, anionic, and amphoteric surfactants... 

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