| 摘要 |
Resins obtainable from compounds of formula 1in which the substituents R<2 >and HNR<1 >can be in the ortho, meta or para position relative to one another, andR<1 >has the same meaning as R<2>, or has the meaning -COR<2>, where R<1 >is independent of R<2>,R<2 >is C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl, C7-C30-alkylaryl, by the steps, which can be carried out in any order, ofA) reaction with an aldehyde of the formula 2wherein R<3 >is H, C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl or C7-C30-alkylaryl, andB) alkoxylation with a C2-C4-alkylene oxide in molar excess, such that the resulting alkoxylate has a degree of alkoxylation of from 1 to 100 alkylene oxide units per -NH group,and the resin has a molecular weight of from 250 to 100,000 units, and their use as emulsion breakers.
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