more preferably varies from 5 to 100 ii an alkyl carboxylic acid ester of an ethoxylated polyhydric alcohol having at least 3 hydroxyl groups per molecule prior to ethoxylation where the alkyl carboxylic acid has from 8 to 30 carbon atoms and may be saturated or unsaturated and further where the mono ester functionality is at least 80 lo with the remainder being a di ester functionality and further where the number of ethylene oxide molecules per polyhydric alcohol ester is at least 3 preferably the polyhydric alcohol is selected from the group consisting of triethanolamine glycerol pentaerythritol sorbitol sorbitan sucrose or a polyglyceride and or the total number of ethylene oxide molecules per polyhydric alcohol ester varies from 3 to 500 and more preferably varies from 5 to 100 iii an alkyl carboxylic acid ester of a polyhydric alcohol having at least 3 hydroxyl groups per molecule prior to esterification where the alkyl carboxylic acid has from 8 to 30 carbon atoms and may be saturated or unsaturated and further where the mono ester functionality is at least 80 with the remainder being a di ester functionality preferably the polyhydric alcohol is selected from the group consisting of triethanolamine glycerol pentaerythritol sorbitol sorbitan sorbitol and a polyglyceride iv an ethoxylated alkyl carboxylic acid ester of a polyhydric alcohol having at least 3 hydroxyl groups per molecule prior to esterification where the.