Abstract: A method to improve an efflorescence resistance of film forming compositions. The method comprises the step of adding a coalescent aid comprising a fatty acid ester to the film forming composition, the fatty acid ester has a formula of RCOOX wherein R is a hydrocarbyl having one or more aliphatic carbon-carbon double bonds, and X is selected from a group consisting of: a saturated hydrocarbyl, a hydrocarbyl having one or more aliphatic carbon-carbon double bonds and a substituted hydrocarbyl. These non volatile organic fatty acid ester based coalescents impart superior efflorescence resistance and resistance to color change to film forming compositions, including latex paints, versus conventional, VOC coalescent solvent.

Abstract: A thixotropy imparting composition. The composition comprises the reaction products of: one or more polyesters from one or more polyols having at least two hydroxyl moieties; and one or more polycarboxylic acids having at least two carboxylic acid moieties; and one or more basic compounds, wherein said polyesters have at least two active carboxylic acid moieties as end groups and at least a portion of said carboxylic acid moieties are in the carboxylate anion form. This composition may further comprise one or more diluents. The composition exists as a liquid. The composition may be used in a non-aqueous fluid system as a rheological additive in combination with one or more particulate materials, wherein said rheological additive imparts thixotropy to said system. A thixotropy imparting composition.