| abstract |
Quaternary ammonium betaine derivs of formula (I) are used in cosmetics and prepns for body care esp deodorants and hair treatments. In an example the product from lauryl-dimethylamine and Et cl-acetate is used to make an anti-dandruff hair wash contg. 2 kg of the product, 65 kg 96% EtOH, 1kg isopropyl myristate, 0.2 kg menthol, 31 kg water and 0.8 kg perfume. (R' = a C10-20 chain which may be broken by amide or ether groups; R" = C1-3 alkyl or alkanol; A = an alcchol, polyalcohol or a functional HO compds., and Y = a halogen anion; m and n 1-4). |