Polyether dispersants

Details Polyether dispersants Polyether dispersants

1982-07-21

1984-05-22

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

252351, 106308Q, C07C 43205

Patent

active

044503040

ABSTRACT:
Compounds of the formula ##STR1## in which Y denotes an aryloxy group, which is possibly substituted, R.sub.4 and R.sub.5 denote hydrogen or C.sub.1 -C.sub.4 -alkyl, m denotes 0 to 12 and Z denotes polyalkylene glycol radicals having about 8 to about 200 ethylene glycol units --(CH.sub.2 --CH.sub.2 O)-- or up to about 200 ethylene glycol units and alkylene glycol units of the formula ##STR2## in which R.sub.6 is methyl or ethyl and in which at least 8 ethylene glycol units are present. These compounds are prepared by initially reacting epoxide with a phenol or naphthol and subsequently oxalkylating. The reaction products are used as dispersants for the preparation of aqueous pigment dispersions.

REFERENCES:
patent: 3004931 (1961-10-01), Brueschweiler et al.
patent: 4237320 (1980-12-01), Krapf et al.

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