| 主权项 |
1. A compound of Formula (1b) and salts thereof, comprising:wherein
when L is sulphur, w is 1 and z is 1; or when L is phosphorus, w is 0 and z is 2; E is —OH, or an oxygen anion when the compound of Formula (1b) is a salt; Q is a repeat unit derived from an aminocarboxylic acid, or a hydroxycarboxylic acid, or a lactone, a residue of a dicarboxylic acid and diol, or mixtures thereof; m is 0 or 1, with the proviso that when m is 0, v is 1, and Q is linked via an oxygen derived from a hydroxy group to L; and when m is 1, v is 1 to 4; J is a mono-, di-, tri- or poly-hydroxy di-, tri- or poly-carboxylic acid residue, with the proviso that J is linked via a carboxylic group to Q and via an oxygen of a hydroxy group to L when m is 1; n is 0 to 100; R is independently C1-50-optionally substituted hydrocarbyl, or C1-50-optionally substituted hydrocarbonyl, or the residue of an epoxide; Y is an alkyleneoxy group, wherein at least one Y group which is —CH3CH(CH3)O— and the chain represented by (Y)x contains up to 90 mole % ethyleneoxy repeat units; T is an alkylene group such as C2-4 alkylene; G is independently H or C1-50-optionally substituted hydrocarbyl or C1-50-optionally substituted hydrocarbonyl; and x is 2 to 90. |
