Importance

Loading Importance Indicators...

Abstract

A method for forming microcapsules by enwrapping an oily core material in a formaldehyde condensation product formed in situ wherein a dispersant is used of the formula (I): ##STR1## where: M is an alkali metal cation or a quaternary ammonium group, L is --(CH.sub.2).sub.p, --COO(CH.sub.2).sub.p, --C.sub.6 H.sub.4 -- or a direct bond; R, R.sup.2 and R.sup.6 are the same or different and represent a hydrogen atom or a methyl group; R.sup.1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or --SO.sub.3 M where M is defined as above; R.sup.3 is --COOR.sup.4, --CONHR.sup.4, --CO--R.sup.4, a pyridinyl group or quaternary salt thereof, --COOCH.sub.2 CH.sub.2 N(CH.sub.3).sub.2 --, --COOCH.sub.2 CH.sub.2 N.sub.4 (CH.sub.3).sub.3 Cl-- group having 1 to 12 carbon atoms, an aralkyl group, an aryl group, or --(CH.sub.2).sub.m --OOC--CR.sup.2 CH.sub.2, --(OCH.sub.2 CHhd 2).sub.m COO--CR.sup.2 CH.sub.2 or --(CH.sub.2).sub.m NHCO--CR.sup.2 CH.sub.2 ; x is about 0.4 to 0.8; y is about 0.2 to 0.6; z is about 0 to 0.1; n is an integer greater than or equal to 1. m is an integer of 1 to 4; and p is an integer of 0 to 4. The compound of claim 1 wherein x is about 0.5 to 0.7, y is about 0.3 to 0.5 and z is about 0.005 to 0.05.

Loading the Abstract Image...

First Claim