Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1985-11-26
1987-11-17
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
534583, 534617, 534622, 534626, 534627, 534629, 534632, 534633, 534635, 534636, 534637, 534638, 534642, 534887, 544355, 260371, 260372, C09B 4300, C09B 4600, C09B 6200, C09B 62503
Patent
active
047075457
ABSTRACT:
Lithium salts of anionic dyes are prepared by first converting another salt of this anionic dye in aqueous solution or suspension by means of a compound which releases calcium ions into the water-insoluble or sparingly water-soluble calcium salt of the dye, which is separated from the aqueous medium and is then converted to an aqueous suspension by treatment with lithium sulfate or lithium hydrogensulfate or a mixture thereof in an equivalent amount of each or in an excess of up to 10% into its lithium salt.
REFERENCES:
patent: 2694056 (1954-11-01), Ludwig et al.
patent: 2796415 (1957-06-01), Ludwig et al.
patent: 3321457 (1967-05-01), Kissa
patent: 3600376 (1971-08-01), Franklin
patent: 3621008 (1971-11-01), Ross et al.
patent: 3635944 (1972-01-01), Litke
patent: 3655640 (1972-04-01), Hoare
patent: 4002603 (1977-01-01), Robbins et al.
Sisler et al, "General Chemistry, A Systematic Approach", The Macmillan Company, New York, pp. 214, 215 and 444 (1949).
Meininger Fritz
Schlafer Ludwig
Higel Floyd D.
Hoechst Aktiengesellschaft
LandOfFree
Process for the preparation of lithium salts of anionic dyes by does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of lithium salts of anionic dyes by , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of lithium salts of anionic dyes by will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1450927