Fatty alcohol (ether) sulfates with improved low-temperature behavior
AssigneeHenkel Corporation
InventorsWolfgang Schmidt, Karl-Heinz Schmid, Michael Neuss, Birgit Middelhauve, Juan Carlos Wuhrmann, Dagmar Zaika
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Abstract
Fatty alcohol (ether) sulfates which are obtained by co-sulfating mixtures of (a) C.sub.8-22 fatty alcohols and (b) C.sub.8-22 fatty alcohol ethoxylates containing an average of 1.9 to 3.9 ethylene oxide units in a ratio by weight of 20:80 to 80:20, and then neutralizing the mixtures thus co-sulfated with aqueous bases. The substances have distinctly improved low-temperature behavior in relation to ether sulfates with comparable degrees of ethoxylation, and are useful as components of surface-active compositions.
Claims26
A process for the production of aqueous fatty alcohol sulfate/fatty alcohol ether sulfate concentrates having improved low-temperature behavior comprising the steps of
- A) co-sulfating a mixture of
- (a) at lease one primary fatty alcohol corresponding to formula (I):
- R.sup.1 OH (I)
- In which R.sup.1 represents a linear or branched aliphatic alkyl radical containing 8 to 22 carbon atoms, and
- (b) at least one primary fatty alcohol ethoxylate corresponding to formula (II):
- R.sup.2 O(CH.sub.2 CH.sub.2 O).sub.n H (II)
- in which R.sup.2 represents a linear or branched aliphatic alkyl radical containing 8 to 22 carbon atoms, and n is an average number of 1.9 to 3.9, wherein the weight ratio of (a) to (b) is from about 20:80 to about 80:20;
- and
- B) neutralizing the co-sulfated mixture from step A) with an aqueous base.
Dependencies are inferred from the claim text.