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US 5,710,332 AGranted
Carbohydrate-derived surfactants and their precursors
AssigneeAlbright & Wilson Limited
InventorsBrynley Morris Phillips, Ajit Kumar, Alan Smithson
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AssigneeAlbright & Wilson Limited
InventorsBrynley Morris Phillips, Ajit Kumar, Alan Smithson
Estimating the term…
A method for the manufacture of N,N dialkylglycamine compounds of general formula R.sub.2 NR.sub.1 R.sub.3 (I) by reacting a secondary amine of general formula R.sub.2 NHR.sub.3 (II) in which R.sub.2 is a straight or branched chain alkyl or hydroxyalkyl group having from 1 to 4 carbon atoms and R.sub.3 is a residue from a monosaccharide, with an alkali metal or alkaline earth metal aliphatic sulphate, R.sub.1 SO.sub.4 M, in which R.sub.1 is a straight or branched chain alkyl or alkenyl group having from 8 to 24 carbon atoms. The betaine, suphobetaine and N-oxidised derivatives of (I) are provided for use as mild surfactants.
An N--C.sub.10-20 alkyl-N-methylglycamine N-oxide.
A method of making N--C.sub.10-20 alkyl-N-methylglycamine N-oxide, wherein said method comprises oxidizing an N--C.sub.10-20 alkyl-N-methylglycamine to the N--C.sub.10-20 alkyl-N-methylglycamine N-oxide.
A method of making N--C.sub.10-20 alkyl-N-methylglycamine N-oxide, wherein said method comprises oxidizing an N--C.sub.10-20 alkyl-N-methylglycamine to the N--C.sub.10-20 alkyl-N-methylglycamine N-oxide with hydrogen peroxide as the oxidizing agent.
Dependencies are inferred from the claim text.