Dispersants for coating compositions isocyanatoalkylacrylates as inorganic pigment dispersant on metal substrates
First Claim
1. A composition of the formula ##STR4## A, B and C are connected to Z by urea linkages, Z is the residue of a polyisocyanate, it being understood that Z is at least a triisocyanate when all of A, B and C are present,A is the residue which results from the removal of amino hydrogen from a primary or secondary fatty acid amine of 12-24 carbon atoms in the fatty acid groups;
- B is the residue which results from the removal of amino hydrogen from a primary or secondary alkyl amine or alkanolamine of up to 6 carbon atoms in the alkyl or alkanol groups;
C is the residue which results from the removal of amino hydrogen from a primary or secondary aminosilane of the formula
space="preserve" listing-type="equation">H.sub.n N-[(CH.sub.2).sub.p -Si-(OY).sub.3 ].sub.mwhereinY is alkyl of 2-6 carbon atoms, m and n are each 1 or 2 and the sum of m and n is 3, and p is 2-6; and
a is 20-80, b is 80-20, and c is 0-40, the sum of a, b and c being 100, the mole percentage of --NCO groups replaced on Z.
1 Assignment
0 Petitions
Accused Products
Abstract
Dispersants which improve the gloss of acrylic paints are prepared by reacting the isocyanate groups of monomeric polyisocyanates or isocyanate acrylate polymers with (1) fatty amines, (2) lower alkylamines or alkanolamines and (3), optionally, aminosilanes. A formula for the dispersants may be written as: ##STR1## isocyanate residue, A is fatty amine residue with a=20-80, B is lower alkylamine or alkanolamine residue with b=80-20, and C is aminosilane residue with c=0-40, the sum of a+b+c=100, the (mole) percentage of isocyanate groups replaced.
16 Citations
38 Claims
-
1. A composition of the formula ##STR4## A, B and C are connected to Z by urea linkages, Z is the residue of a polyisocyanate, it being understood that Z is at least a triisocyanate when all of A, B and C are present,
A is the residue which results from the removal of amino hydrogen from a primary or secondary fatty acid amine of 12-24 carbon atoms in the fatty acid groups; -
B is the residue which results from the removal of amino hydrogen from a primary or secondary alkyl amine or alkanolamine of up to 6 carbon atoms in the alkyl or alkanol groups; C is the residue which results from the removal of amino hydrogen from a primary or secondary aminosilane of the formula
space="preserve" listing-type="equation">H.sub.n N-[(CH.sub.2).sub.p -Si-(OY).sub.3 ].sub.mwherein Y is alkyl of 2-6 carbon atoms, m and n are each 1 or 2 and the sum of m and n is 3, and p is 2-6; and a is 20-80, b is 80-20, and c is 0-40, the sum of a, b and c being 100, the mole percentage of --NCO groups replaced on Z. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 37, 38)
-
-
31. The process of preparing a composition of matter which comprises reacting the polymer of a number average molecular weight of 500-10,000 produced by reacting at least 10% by weight of an isocyanatoalkyl acrylate or isocyanatoalkyl methacrylate alone or with at least one other polymerizable monomer selected from the group consisting of alkyl acrylates having 2-12 carbon atoms in the alkyl group;
- alkyl methacrylates having 1-12 carbon atoms in the alkyl group;
styrene;
ethylene;
vinyl acetate; and
vinyl chloride;a primary or secondary saturated fatty acid amine of 6-24 carbon atoms in the fatty acid groups; and a primary or secondary alkyl amine or alkanolamine of up to 6 carbon atoms in the alkyl or alkanol groups. - View Dependent Claims (32, 33, 34, 35, 36)
- alkyl methacrylates having 1-12 carbon atoms in the alkyl group;
Specification