Heavy Duty Detergent

Tallow alcohol sulfate is an important surfactant used in heavy-duty detergents. The unsaturated part of the alkyl chain of tallow alcohol gives their sulfates an improved solubility with excellent detergent and foaming characteristics. 

Okumura [49] in his report A Super Concentrated Heavy Duty Powder Detergent Containing Palm-MES, Production and Performance cites the annual production of MES to be approximately 70,000 tons. New formulations of MES have been successfully introduced in the heavy-duty detergent market, showing excellent detergency performance under normal Japanese washing condi-... 

The main difference in composition between heavy-duty detergent tablets and other supercompact detergents lies in the use of disintegrants. 

Intensive investigations have shown that specific silica-silicone mixtures or paraffin oil systems are considerably more universal in their applicability and that their effectiveness is independent of both water hardness and the nature of the surfactant-builder system employed [31-33]. Therefore, most heavy-duty detergents in Europe have silicone oil and/or paraffins as foam depressors. Soap has almost lost its importance as a foam regulator. Silica-silicone systems, frequently called silicone antifoams, are usually commercially available as concentrated powders. The key silicone oils used for antifoams are dimethylpolysiloxanes. 

Heavy-duty detergent tablets for textile laundry, as mentioned in chapter 4.2.4, use the presence of water to activate a sophisticated disintegration system that dispenses the tablets in a few seconds even though these products have to be stable and hard during storage and application [90, 91, 92]. These two systems are discussed in more detail in the following sections. 

Detergency Building Performance. Detergency building performances of poly(sodium carboxylate)s were examined using a heavy duty detergent formulation on standard soiled cotton cloths. The detergency expressed as a value relative to 10 for STPP and 0 for disodium 3-oxapentanedioate(0DA) was shown below. 

From the consumer viewpoint there are two important and distinct products which are referred to as light- and heavy-duty detergents. The fight-duty products, recommended for use on dishes and fine fabrics, usually have the composition shown in Table IV. 

Other industrial applications requiring a very heavy duty detergent. 

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