US 9,809,684 B2Granted

Resin emulsion composition, and process of obtaining same

AssigneeOxiteno S.A. Industria E Comercio

InventorsSilmar Balsamo Barrios, Juliane Pereira Santos, Pedro Henrique Invencione Porto, Fernanda de Oliveira Barreto Costa, Priscila Milani De Paula, Paulo de Jesus Cunha Filho, Renan Marcel Urenhiuki, Nádia Andrade Armelin, Servaas Engels

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Abstract

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.

Claims20

Dependent claims

A resin emulsion composition, comprising at least a resin, water and at least a non-ionic surfactant of formula I:

R1-(A1O)n-(A2O)x-(A3O)y—R2 (I)
wherein
R1 is a saturated or unsaturated carbon chain containing 1-22 carbon atoms;
A1O is an alkylene oxide homopolymer or block or random copolymer;
A2O is an alkylene oxide block or random copolymer having a composition different than A1O and A3O;
A3O is an alkylene oxide homopolymer or block or random copolymer;
x is an integer ranging from 1 to 30;
n is an integer ranging from 1 to 100;
y is an integer ranging from 0 to 100;
and
R2 is hydrogen or a saturated or unsaturated carbon chain containing 1-22 carbon atoms;
wherein said resin emulsion composition is obtained by a phase inversion emulsification process involving the inversion of phases in an organic phase concentration from 30 to 90%.

9 more elements

Dependencies are inferred from the claim text.