Novel sequestrant builders and method of making the same

Details Novel sequestrant builders and method of making the same Novel sequestrant builders and method of making the same

1972-07-25

1976-05-04

Sutto, Anton H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252132, 252142, 252156, 252180, 252545, 252546, 260548, 260429CY, 2604299, 260439CY, 260456R, 260458, 26050113, 260526N, 260534E, 260534S, 260526R, C07C 5922

Patent

active

039548589

ABSTRACT:
There are disclosed herein novel sequestrant builders for use in detergent compositions having the general formula: ##EQU1## wherein R.sub.1 is selected from the group consisting of H, an alkyl group having 1 to 12 carbon atoms, a hydroxylalkyl group having 1 to 4 carbon atoms, and a COOM group; n is zero or 1; when n is 1, R.sub.2 and R.sub.3 are selected from the group consisting of H, CH.sub.3 and CH.sub.2 COOM; when n is zero a double bond is present between C' and C"; X is COOM, OSO.sub.3 M or SO.sub.3 M; a is zero, 1 or 2; b is zero or 1; Z is selected from the group consisting of O, S, NH, NR.sub.4 wherein R.sub.4 is an alkyl group or hydroxyalkyl group having 1 to 4 carbon atoms provided that when Z is O, a must be zero, X must be COOM and R.sub.1 cannot be H when R.sub.2 and R.sub.3 are both H and b is zero; M is selected from the group consisting of H, alkali metal, ammonium and substituted ammonium cations.
There is also disclosed herein a novel process for preparing the aforesaid compounds using a novel intramolecular Michael type reaction.

REFERENCES:
patent: 2098190 (1937-11-01), Kyrides
patent: 2281394 (1942-04-01), Sorenson
patent: 2346612 (1944-04-01), Bothrock
E. Von Rudloff et al. Canadian J. of Chemistry Vol. 35 pp. 315-321 (1957).

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