Heavy duty liquid synthetic detergent composition

Abstract

Abstract A heavy duty homogeneous aqueous synthetic detergent composition comprises (a) an alkylaryl amine sulphonate; (b) an alkali metal silicate; (c) an alkali metal aryl sulphonate; (d) sodium tripolyphosphate; and (e) at least 0.25% by weight of the total composition of lithium as a water soluble lithium compound. (a) preferably comprises up to 20% by weight of the composition, and has the general formula (R)x-R1-SO3HN(R11)3 where x is 1-5, R is selected from alkyl groups of 1-18 carbon atoms at least one of which has at least 8 carbon atoms, R1 is benzene, R11 is selected from alkyl or alkanol groups containing 1-8 carbon atoms; tetrapropylene benzene triethanolamine sulphonate is the preferred compound. (b) is a sodium or potassium silicate wherein generally the ratio SiO2:Na2O is 3.3:1 and that of SiO2:K2O is 2.2:1, and the amount incorporated is up to 2% of the composition by weight, calculated as SiO2. (c) is used in amounts up to 6% by weight and is usually potassium xylene or toluene sulphonate (d) comprises up to 20% of the composition and (e), which is invariably lithium hydroxide monohydrate, from 0.25-0.5%, calculated as lithium. In one embodiment, ingredient (a) is in part replaced by up to 5% of an alkali metal alkyl sulphate having 10-18 carbon atoms, preferably sodium lauryl sulphate, the amount of (a) then incorporated being at least 11%. The compositions generally also contain up to 1% potassium carboxymethyl cellulose, and optical bleach, dye, and perfume.

Inventors

• 👤 Dasch Lawrence
• 👤 Paul R Cutter

Bibliographic Details