Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1992-03-06
1993-11-23
Bell, Mark L.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106494, 106498, 106 20R, 106 23R, 106 23C, 106 23H, 524 90, 524 92, 524287, 524590, 524602, 524839, 524845, 524879, 528288, 523202, 546 37, C07D47106, C07D49106, C07D49306
Patent
active
052640345
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to novel, useful pigment preparations which are based on perylene compounds and have improved coloristic and rheological properties, a process for their preparation and their use for pigmenting high molecular weight organic materials.
A large number of technological problems may arise when dispersing pigments in high molecular weight materials, in particular high-quality varnishes. In the case of pigments which agglomerate to a high degree and are difficult to disperse, for example, the dispersion usually remains incomplete and the optimum fineness and tinctorial strength are not achieved. Because of such inadequacies, there are a number of proposals for improving the rheological properties of pigments, although these do not always lead to the hoped-for result.
It is thus known from DE-OS 31 06 906 that pigment preparations having outstanding coloristic properties can be obtained by combining pigments of various classes of organic compound with structurally analogous pigment derivatives which have been substituted by introduction of one or more sulfonamide radicals into the underlying molecule. However, the preparation of the perylene type based on C.I. Pigment Red 179 described as an example, inter alia, in that specification still has considerable coloristic and rheological deficiencies with respect to the increased demands of industry.
Pigment preparations from the category of perylene compounds which are prepared by mixing such pigments with corresponding derivatives in which a phthalimidomethylene radical is additionally present are in turn described in DE-AS 29 05 114. The coloristic result of this variation achieved by this procedure continued to remain unsatisfactory, in particular in respect of the dark and cloudy color shade.
Finally, the published Japanese Patent Application 62/197461 (1987) describes the production of preparations based on perylene pigments by adding a pigment-dispersing agent obtainable by reaction of perylenetetracarboxylic acid dianhydride with N-dialkylamino-alkylamines. Nevertheless, it is also possible to achieve only slight rheological improvements with the aid of these pigmentdispersing agents.
From the aspect of the experiences discussed above, the object of the invention defined below was thus further development of pigment preparations of the perylene type which are directed toward their intended use.
In achieving the object described, it has now been found that by the co-action of pigment-dispersing agents based on sulfonated and/or carboxylated perylene compounds, coloristic and rheological properties superior to the standard to date can be imparted to the perylene pigment preparations prepared with these compounds.
The invention relates to pigment preparations characterized by the fact that they contain formula I ##STR1## in which A is a bivalent radical --O-- or>NR.sup.1 and thereof, and or a C.sub.1 -C.sub.4 -alkyl group, or a phenyl group, which can be unsubstituted or mono- or polysubstituted by halogen, such as chlorine or bromine, C.sub.1 -C.sub.4 -alkyl, such as methyl or ethyl, C.sub.1 -C.sub.4 -alkoxy, such as methoxy or ethoxy, or phenylazo; and general formula II ##STR2## in which V is a bivalent radical --O--, >NR.sup.3 or >N--R.sup.4 --Y.sup.- X.sup.+ and thereof, and particular C.sub.1 -C.sub.4 -alkyl, or is a phenyl group, which can be unsubstituted or mono- or polysubstituted by halogen, such as chlorine or bromine, C.sub.1 -C.sub.4 -alkyl, such as methyl or ethyl, C.sub.1 -C.sub.4 -alkoxy, such as methoxy or ethoxy, or phenylazo, once or several times within the C--C chain by a bridge member from the series comprising --O--, --NR.sup.5 --, --S--, phenylene, --CO--, --SO.sub.2 -- and --CR.sup.6 R.sup.7 --, or a chemically appropriate combination thereof, and in which in turn the constituents R.sup.5, R.sup.6 and R.sup.7 independently of one another are each a hydrogen atom or a C.sub.1 -C.sub.4 -alkyl group, which can be unsubstituted or substituted by a heterocyclic radical, preferably of the imidazole or pip
REFERENCES:
patent: 2543747 (1951-03-01), Shrader
patent: 2905685 (1959-09-01), Eckert et al.
patent: 4256507 (1981-03-01), Kranz et al.
patent: 4310359 (1982-01-01), Ehashi et al.
patent: 4431806 (1984-02-01), Spietschka et al.
patent: 4496731 (1985-01-01), Spietschka et al.
patent: 4692189 (1987-09-01), Babler et al.
patent: 4762569 (1988-08-01), Miki et al.
patent: 4978755 (1990-12-01), Babler et al.
Chemical Abstracts 109:212376w; Abstract of "Water-Soluble Perylene-tetracarboxylic acid bisimide Fluorescent Dyes", DE 3,703,513, Aug. 1988.
Dietz Erwin
Urban Manfred
Bell Mark L.
Hertzog Scott L.
Hoechst Aktiengesellschaft
LandOfFree
Pigment preparations based on perylene compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pigment preparations based on perylene compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pigment preparations based on perylene compounds will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1845388