US 9,751,971 B2Granted

Dispersing resins for pigment preparations having a low volatile organic content

AssigneeEvonik Degussa GmbH

InventorsThomas Veit, Michael Ewald, Daniel Engelke, Bettina Burian, Heiko Alzer, Jan Schwarze, Ellen Reuter, Frank Kleinsteinberg, Katrin Roland, Sandra Roediger, Erika Retzlaff, Sylvia Kroes

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

A dispersing resin for conventional solventborne pigment preparations having a low to very low proportion of volatile organic substances is provided. Further provided are solventborne coating materials containing the dispersing resin. Uses include paints, varnishes, adhesives, inks or printing inks, and compositions for coloring of plastics. The pigment preparations produced with these resins are free of yellowing, stable to weathering, of low viscosity and intensely colored.

Claims14

Dependent claims

A ketone-aldehyde condensation resin, comprising:

a condensation product of an aliphatic ketone and an aldehyde;
wherein
the aldehyde is at least one selected from the group consisting of formaldehyde, acetaldehyde, n-butyraldehyde, isobutyraldehyde, amylaldehyde and dodecanal,
the ketone is at least one selected from the group consisting of heptan-2-one, heptan-3-one, heptan-4-one, octan-2-one, undecan-2-one, 5-methylhexan-2-one and 2-methylpentan-4-one,
a molar ratio of the aliphatic ketone to the aldehyde is from 1/1.5 to 1/2.5, and
the condensation resin is free-flowing at a temperature of 2.3° C. and a pressure of 101,325 Pa.

3 more elements

Dependencies are inferred from the claim text.