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US 3,941,817 AGranted
Tertiary amide amphoteric surface active agents and process for their manufacture
AssigneeGAF Corporation
InventorParitosh Mohan Chakrabarti
Life of this patent
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Abstract
Improved amphoteric surface active agents are obtained from tertiary amides that have been formed by condensation of esters of fatty acids with an aminoalkyl alkanolamine, e.g., aminoethyl ethanolamine, under special conditions, by conventional carboxymethylation with ClCH.sub.2 CO.sub.2 Na or ClCH.sub.2 CO.sub.2 H. The resultant amphoteric surface active agents are especially useful as wetting agents, forming agents, emulsifiers, etc., and in the manufacture of improved shampoos.
Claims19
A tertiary amide of the formula ##EQU8## wherein:
- R.sub.1 is selected from the group consisting of unsubstituted C.sub.5 -C.sub.29 and substituted C.sub.5 -C.sub.29 aliphatic hydrocarbon radicals, which, when substituted, have one or more substituents selected from the group consisting of Cl, Br, OH and OCH.sub.3 ;
- and R.sub.2 -R.sub.5 are each selected from the group consisting of hydrogen unsubstituted C.sub.2 -C.sub.4 aliphatic hydrocarbon radicals, and substituted C.sub.2 -C.sub.4 aliphatic hydrocarbon radicals whose substituents are as previously defined for R.sub.1.
Amphoteric surface active agents of the formula:
- ##EQU15## wherein R.sub.1 is selected from the group consisting of unsubstituted c.sub.5 -C.sub.29 and substituted C.sub.5 -C.sub.29 aliphatic hydrocarbon radicals, which, when substituted, have one or more substituents selected from the group consisting of Cl, Br, OH and OCH.sub.3 ;
- and R.sub.2 -R.sub.5 are each selected from the group consisting of hydrogen, unsubstituted C.sub.2 -C.sub.4 aliphatic hydrocarbon radicals, and substituted C.sub.2 -C.sub.4 aliphatic hydrocarbon radicals whose substituents are as previously defined for R.sub.1 ;
- and wherein M is selected from the group consisting of hydrogen, an alkali metal cation, and an ammonium cation.
Dependencies are inferred from the claim text.