发明名称 |
FOERFARANDE FOER FRAMSTAELLNING AV ETT PULVERFORMIGT JAERNTARTRAT-NATRIUMKOMPLEX |
摘要 |
A process for preparing a powder-like iron-sodium tartrate complex useful for the preparation of a solvent for cellulose which comprises reacting a salt of trivalent iron with sodium tartrate or primary sodium tartrate or a mixture thereof in an aqueous medium at a molar ratio of said reactants of 1:3.0-3.3 respectively, a concentration of the salt of trivalent iron of 0.5-0.7 mole/l of the starting reaction mixture and at a pH of the reaction mixture of 0.8-5.5 with the formation of a reaction mass containing the desired product; the latter is precipitated from the reaction mass by means of a precipitation agent such as methanol, ethanol, propanol or acetone at a volume ratio of the precipitation agent to the reaction mass of 0.7-1.5:1.0 respectively with the formation of a precipitate of the desired product and a mother liquor; the precipitate of the desired product is separated from the mother liquor and dried at a temperature of from 30 DEG to 105 DEG C. |
申请公布号 |
SE457532(B) |
申请公布日期 |
1989.01.09 |
申请号 |
SE19860000912 |
申请日期 |
1986.02.28 |
申请人 |
VSESOJUZNOE NAUCHNO-PROIZVODSTVENNOE OBIEDINENIE TSELLJUL |
发明人 |
M A * IVANOV;J A * KOMKOV;V V * FOMINA |
分类号 |
C07C51/41;C07F15/02;(IPC1-7):07C51/41;07C59/255 |
主分类号 |
C07C51/41 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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