Surface Active Agent

Abstract: The invention concerns an ionic surface-active agent comprising a polycarbonate or poly(carbonate ether) of the formula (I): A-((PC)P-(PE)Q-Z)X (I) wherein: A is derived from a functional starter compound; PC represents a carbonate block with P repeat units of formula (II); wherein: Re1, Re2, Re3, and Re4 are all H; or one of Re1, Re2, Re3, and Re4 is methyl, ethyl, propyl, butyl, or an ether, ester or carbonate group, and the remaining three of Re1, Re2, Re3, and Re4 are all H; PE represents a polyether block with Q repeat units of formula (III); wherein: Re1, Re2, Re3, and Re4 are all H; or one of Re1, Re2, Re3, and Re4 is methyl, ethyl, propyl, butyl, or an ether, ester or carbonate group, and the remaining three of Re1, Re2, Re3, and Re4 are all H; at least one Z is an ionic constituent; wherein the value of the or each P is independently from 1 to 50; wherein the value of the or each Q is independently from 0 to 50; and X is 1 or more.

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