Lead置于na-Acetate,Dichromate体系中,用 Not Given 用作溶剂,化学反应生成颜料黄 34 参考文献:Gmelin Handbuch Der Anorganischen Chemie,Gmelin Handbook: Cr: Mvol.A1,6.12,Page 252-255 标题:Gmelin Handbuch Der Anorganischen Chemie,Gmelin Handbook: Cr: Mvol.A1,6.12,Page 252-255
专利信息
专利号:US-4810390-A 优先权日:1986-10-10 标 题:Separation and purification of pigment suspensions and suspensions of pigment intermediates by a membrane separation process 发明人:FLIERL KLAUS; PFENNINGER HEINZ; MARFURT HANS-RUDOLF 权利人:CIBA GEIGY CORP 摘要:Process for separation and purifying pigment suspensions and suspensions of pigment intermediates in a liquid by means of a membrane separation process, whereby the suspension to be treated is uniformly fed to and circulated through a microfiltration unit containing at least one semi-permeable membrane and the separated liquid flows off through the membrane as permeate which process comprises replacing the permeate gradually by a washing liquid that differs from the first liquid such that the total amount of washing liquid fed into the system is 1 to 15 times the total volume of the initial suspension, and separating the resultant suspension from the liquid by means of conventional filtration or drying apparatus. The process is particularly suitable for processing fine pigment suspensions often obtained in pigment synthesis.
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