Abstract: The invention relates to pigment preparation having
(a) at least one organic pigment,
(b) at least one optionally ionically modified phenol-styrene polyglycol ether, and
(c) at least one surface-active agent that is
(i) an oxalkylated acetylene glycol of formula (I)
wherein n is 0 to 14, m is 0 to 14, and m+n is 0 to 14, and/or
(ii) compounds having the formulas (II), (III), and (IV)
wherein R is C6-C18-alkyl. R1 independently denotes H or C1-C4-alkyl, p is from 3 to 60, R2 is R or optionally C1-C18-alkyl-substituted phenyl, X is —SO3−, —SO2−, —PO3═, or —CO—(R3)—COO−; R3 is a divalent aliphatic or aromatic radical, and Kat is a cation.
Type:
Grant
Filed:
May 15, 2000
Date of Patent:
October 15, 2002
Assignee:
Bayer Akgiengesellschaft
Inventors:
Michael Grobe, Peter-Roger Nyssen, Michael Krause, Karina Kutschkau, Dirk Pfützenreuter