DE1719415

At least one neutral amine salt of a dimerized fatty acid and an aliphatic C12-C18 amine, cycloaliphatic, or aromatic or heterocyclic mono- or poly-nuclear amine is added to a paint or varnish composition as an anti-settling and anti-flooding agent for the pigment. The amine salt acts also as a grinding aid if mixed with the pigment before incorporation in the paint medium. The amine salt is used in an amount 0.05-5% by weight of the composition or 0.1-3% of the pigment in the former and latter cases. Salts of dimerized mono- or poly-unsaturated C11-C22, particularly C18, fatty acids with C12-C18 primary aliphatic amines are preferred. Examples 1, 2 and 4 disclose alkyd resin paints and Example 5 a lacquer based on phenol-modified colophony and wood oil together with linseed oil. Example 1 contains a short oil alkyd resin and a urea-formaldehyde resin, both in xylene solution, red iron oxide, talcum, solvents, and a zinc naphthenate drier, Example 2 two long oil alkyds, a maleic resin, titanium dioxide, heavy spar, zinc yellow, an anti-skinning agent, solvents and a cobalt-lead naphthenate drier, Example 4 two long oil alkyds, a maleic resin, titanium dioxide, soot, and an anti-skinning agent, solvents and a cobalt-lead naphthenate drier, and Example 5 the above resin and drying oils and titanium dioxide, yellow and black iron oxides, an anti-skinning agent, white spirit and cobalt-lead naphthenate, as well as amine salts of the invention or other materials for comparative purposes.ALSO:At least one neutral amine salt of a dimerized fatty acid and C12-C18 aliphatic amine, cycloaliphati or aromatic or heterocyclic mono- or poly-nuclear amine is added to a paint or varnish composition as an anti-settling and anti-flooding agent for the pigment. The amine salt acts also as a grinding aid if mixed with the pigment before incorporation in the paint medium. Quantities required are 0.05-5% by weight of the composition or 0.1-3% by weight of the pigment in the former and latter cases. Salts of dimerized mono- or poly-unsaturated C11-C22, particularly C18, fatty acids with C12-C18 primary aliphatic amines are preferred, especially the salt of the coconut amines mixture with dimerized soya bean or cotton seed oil fatty acids. The dimerized acid may contain 15-25% by weight trimers and higher polymers, and up to 3% monomer. Example 3 discloses linseed oil based paints containing various amine salts and the pigments Prussian blue, ammonium manganese phosphate, a red a