PROCESS FOR PREPARING FLAKE-FORM PIGMENTS BASED ON

专利名称：PROCESS FOR PREPARING FLAKE-FORM

PIGMENTS BASED ON ALUMINUM AND ONSIOZ (Z=0.7-2.0)

发明人：BUJARD, Patrice,BERENS, Ulrich申请号：EP05779284.8申请日：20050815公开号：EP1784458A2公开日：20070516

摘要：The present invention relates to process for the production of plane-parallelplatelets, comprising the steps of: a) vapour-deposition of a separating agent onto acarrier to produce a separating agent 5 layer, b) vapour-deposition of at least oneproduct layer onto the separating agent layer, and c) dissolution of the separating agentlayer in a solvent and production of a suspension in which the at least one product layeris present in the form of plane-parallel platelets, wherein the separating agent isselected from the group consisting of anthracene, anthraquinone, acetamidophenol,acetylsalicylic acid, camphoric anhydride, benzimidazole, benzene-1,2,4-tricarboxylic acid,biphenyl-2,2-dicarboxylic acid, bis(4-hydroxyphenyl)sulfone, dihydroxyanthraquinone,hydantoin, 3-hydroxybenzoic acid, 8-hydroxyquinoline-5-sulfonic acid monohydrate, 4-hydroxycoumarin, 7-hydroxycoumarin, 3-hydroxynaphthalene-2-carboxylic acid,

isophthalic acid, 4,4-methylene-bis-3-hydroxynaphthalene-2-carboxylic acid, naphthalene-1,8-dicarboxylic anhydride, phthalimide and its potassium salt, phenolphthalein,phenothiazine, saccharin and its salts, tetraphenylmethane, triphenylene,

triphenylmethanol, and also mixtures of at least two of those substances, especially

pentaerythritol (C(CH2OH)4), trimesic acid (= 1,3,5 bezene tricarboxylic acid), DL-alanine,DL-valine, 2,6- 20 diaminopurine, ascorbic acid, 1,3,5-benzenetricarboxylic acid, o-acetylsalicyclic acid, diphenic acid, terephthalic acid, pyrogallol, cyanuric acid,hexamethyltetramine (urotropin), fumaric acid, and 4-acetylbenzoic acid and alsomixtures of at least two of those substances.

申请人：CIBA SPECIALTY CHEMICALS HOLDING INC. Patent Departement

地址：Klybeckstrasse 141 CH-4057 Basel CH

国籍：CH

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