US 11,242,467 B2 · Melamine-polyethers as dispersants in non-aqueous, liquid pigment compositions

Abstract

The present invention relates to novel mono- or polynuclear melamine compounds and their use as dispersants for pigments and fillers in coating compositions, in particular in solvent-borne coating compositions. The mono- or polynuclear melamine compounds of the invention have at least one 2,4,6-triamino-1,3,5-triazine ring, wherein at least one amino groups of at least one of the 2,4,6-triamino-1,3,5-triazine rings of the mono- or polynuclear melamine compounds is of the formula A:NR1R2 (A) where R1 is H, CH(R3)OR4 or R2, R2 is CH(R3)O(A-O)x—R5, where R3 is H, C1-C10-alkyl or aryl; R4 is H, C1-C4-alkyl or C1-C4-alkoxy-C1-C4-alkyl; R5 is a hydrocarbon radical having from 1 to 40 carbon atoms; x is an integer from 2 to 500, having on average a value in the range from 2.5 to 400; A is an C2-C4-alkan-1,2-diyl radical.

Claims20

Dependent claims

A mixture of mono- or polynuclear melamine compounds comprising a 2,4,6 triamino-1,3,5-triazine ring, wherein at least one amino group is of a formula (1):

NR1R2 (1)
where
R1 is H, CH(R3)OR4, or R2,
R2 is CH(R3)O(A-O)x—R5, where
R3 is C1-C10-alkyl, or aryl,
R4 is H, C1-C4-alkyl, or C1-C4-alkoxy-C1-C4-alkyl,
R5 is a hydrocarbon radical having 1 to 40 carbon atoms, which is selected from C1-C-22-alkyl, aryl-C1-C4-alkyl or aryl, where aryl in aryl-C1-C4-alkyl or aryl is phenyl or naphthyl and is unsubstituted, carries 1 C1-C10-alkyl group, or carries 2 C1-C10-alkyl groups;
x is an integer from 2 to 500, having a number average value in a range of 3 to 200;
A is a C2-C4-alkan-1,2-diyl radical.

6 more elements

Dependencies are inferred from the claim text.

Melamine-polyethers as dispersants in non-aqueous, liquid pigment compositions

Life of this patent

Melamine-polyethers as dispersants in non-aqueous, liquid pigment compositions

Life of this patent

Abstract

Claims20