GB480231A - Improvements in or relating to washing and cleansing agents - Google Patents

Abstract

Cleansing-agents consist of one or more soaps of hard fats or fatty acids mixed with one or more water-soluble salts of ethercarboxylic acids of formula R.Ar.O.R1.COOH where R1 is an organic radical, Ar an aromatic radical, and R an aliphatic or cyclo-aliphatic radical containing 4 or more C atoms. Suitable proportions are 50-50 or 70-30 of soap to the sodium salt. There may be added soda, phosphates, e.g. sodium pyrophosphate, silicates, borates, solvents, synthetic washing agents, bleaching agents, e.g. peroxides and persalts such as perborate, and stabilizers. Soap fats specified are stearic or palmitic acid or mixtures; tallow; hardened fats or fatty acids, e.g. hardened whale, sperm, soya, linseed, castor, peanut, and sunflower seed oils; or selected fractions. R may be butyl, sec. butyl, amyl, isoamyl, octyl, di-isobutyl, dodecyl, sec. dodecyl, tri-isobutyl, hexa-decyl, cyclohexyl, or methylcyclohexyl; Ar may be a benzene, toluene, diphenyl, diphenyl-methane, or naphthalene radical. The ether-carboxylic acids are derived from acids such as hydroxy-acetic, hydroxy-propionic, hydroxy-butyric, hydroxy-valeric, malic, and salicylic acids. Suitable salts are the alkali, ammonium, triethanolamine, amino-propandiol, and tetraethyl-ammonium salts of phen-oxyacetic acid, cres-oxyacetic acid, naphth-oxyacetic acid, lactic acid, or salicylic acid substituted in the aromatic radical by a hexyl or sec. hexyl radical. The neutralization of the ethercarboxylic acid and the production of the soap may be combined. The products may be marketed as powders, lumps, flakes, shreds, solutions, or pastes.