Addition compounds suitable for use as dispersing agents and dispersion stabilizers, process for their production, their use and solids coated therewith

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS The invention embraces, in the first instance, addition compounds and their salts suitable for use as dispersing agents and as dispersion stabilizers, obtainable by reacting polyisocyanates, hydroxy compounds and Zerewitinoff hydrogen as well as compounds containing at least one acidic functional group, hydroxy-group or alkoxysilyl-group, optionally in the presence of solvents and optionally in the presence of reaction catalysts, characterized in that they are obtainable by reacting polyisocyanates having an average functionality of 2.
5 to 10 (a) with monohydroxycompounds of the Formula I Y--OH I wherein Y has the following meanings: (i) aliphatic and/or cycloaliphatic hydrocarbon groups with 8 to 30 carbon atoms, the hydrogen atoms of which may be partially replaced by halogens or aryl residues, (ii) aliphatic, cycloaliphatic and/or aromatic groups containing at least one --O--, --NHCOO-- and/or --COO-- group, having an average molecular weight M.
sub.
n from 200 to 10,000, the hydrogen atoms of which may be partially replaced by halogens, in such an amount that 10 to 70%, preferably 15 to 45% and particularly preferably 20 to 40% of the NCO-- groups are reacted; (b) the resulting reaction product is reacted with compounds of the Formula II G--(E).
sub.
n II wherein E represents --OH, --NH.
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2, and/or --NHR (in which R represents an alkyl group having 1 to 4 carbon atoms) and n represents 2 or 3.
and G represents an aliphatic, cycloaliphatic and/or aromatic group containing at least 2 carbon atoms having an average molecular weight M.
sub.
n of at most 3000, which may contain --O--, --COO--, --CONH--, --NHCOO--, --S--, --Si(CH.
sub.
3).
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2 O-- and/or --SO.
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2 -- groups, in such an amount that a further 1 to 50%, preferably 5 to 45% and particularly preferably 15 to 40% of the NCO-- groups of the originally utilized polyisocyanate are reacted, whereby in the reactions (a) and (b) all total at least 20% and at most 85%, preferably 30 to 65% and particularly preferably 40 to 60% of the NCO-- groups of the originally utilized polyisocyanate are reacted, (c) the resulting reaction product is reacted with at least one of the compounds of the Formula III Z--Q III or IV Z--NH--Z IV wherein Q represents --OH, --NH