Patent ID: 6646016
Filing Date: 2003-11-11
Classification: C08G,C10G

Abstract:
A method of using a resin for breaking oil-water emulsions, where the resin is obtained from a compound of the formula 1in whichX is â€”NHR1, â€”COOH or â€”CONHR2, in which R1 is H, C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl, C7-C30-alkylaryl or â€”COR2 R2 is H, C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl or C7-C30-alkylaryl, Y is in the ortho, mets or pars position relative to X, and is a radical of the formulae 2 to 5in whichR3 is C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl, C7-C30-alkyaryl R4 is â€”OR3, â€”NR6R7 or â€”R5 R5 is C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl or C7-C30-alkylaryl R6 has the same meaning as given for R3, or is â€”COR3, but is independent of R3, R7 has the same meaning as given for R3, or is â€”COR3, but is independent of R3, where, by performing the steps A) or B) with formula 1 and the resin is obtained from performing steps A) and B), which can be carried out in any order, of A) reaction with an aldehyde of the formula 6 R8â€”CHOâ€ƒâ€ƒ(6), where R8 is H, C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl or C7-C30-alkylaryl, and B) alkoxylation with a C2-C4-alkylene oxide in molar excess, such that a resulting alkoxylate has a degree of alkoxylation of from 1 to 100 alkylene oxide units per â€”OH or â€”NH group, and the resin has a molecular mass of from 250 to 100,000 units; the method comprising adding the resin to an oil-water emulsion.