C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
134/27, 260/503.
C11D 1/62 (2006.01) C11D 1/92 (2006.01)
Patent
CA 1041538
ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the preparation of hydroxysulphobetaines by reacting a C10-C25 alkyldimethylamine with an alkali salt of a halohydroxypropane sulphonic acid in the presence of a lower aliphatic alcohol, which preferably contains up to 10%wt of water, the molar ratios of the tertiary amine and the salt of the halohydroxypropane sulphonic acid applied being in the range of from 1 to 4.5 The present invention relates in particular to the preparation of novel 3-sec. n-C12-C18 alkyldimethylammonio-2-hydroxy-1-sulphonates by reacting epichlorohydrin sulphonate with sec. n-C12-C18 alkyldimethylamine in the presence of a solvent mixture of 2-propanol and water. The hydroxysulphobetaines can be used very suitably for the cleaning of, for instance, cotton and man-made fibres at low temperatures, since they suffer less from the absence of builders than all known detergents.
202279
Bakker Pieter M.
Kesselaar Fernand H.
Na
Shell Canada Limited
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