RESIN EMULSION COMPOSITION, AND PROCESS OF OBTAINING SAME

摘要

The present invention relates to aqueous resin emulsions containing at least a non-ionic surfactant of general formula R1—(A1O)n—(A2O)x—(A3O)y—R2, obtained by the phase inversion emulsification process. In particular, the invention relates to aqueous resin emulsions commonly used in solvent-based paints, such as, for example, alkyd resins. Said emulsions are stabilized by non-ionic and anionic surfactant compositions which promote the inversion of the water-oil to oil-water phases in the presence of low water content, enabling water-oil type emulsions to be obtained with high productivity and high solids content, even in low shear conditions.

主权项

1. A resin emulsion composition, characterized by comprising at least a resin, water and at least a non-ionic surfactant of formula I:
R1—(A1O)1—(A2O)x—(A3O)y—R2  (I) wherein R1 is a saturated or unsaturated carbon chain containing 1-22 carbons A1O is an alkylene oxide homopolymer or block or random copolymer A2O is an alkylene oxide block or random copolymer having a composition different to A1 and A3 A3O is an alkylene oxide homopolymer or block or random copolymer x varies from 1 to 30 n varies from 1 to 100 y varies from 0 to 100 R2 is hydrogen or a saturated or unsaturated carbon chain containing 1-22 carbons wherein said resin emulsion composition is obtained by the phase inversion emulsification process and inverts phases in an organic phase concentration from 30 to 90%, especially between 60-80%.