SU510493A1 - The method of obtaining lead-molybdate crop - Google Patents
The method of obtaining lead-molybdate cropInfo
- Publication number
- SU510493A1 SU510493A1 SU2022243A SU2022243A SU510493A1 SU 510493 A1 SU510493 A1 SU 510493A1 SU 2022243 A SU2022243 A SU 2022243A SU 2022243 A SU2022243 A SU 2022243A SU 510493 A1 SU510493 A1 SU 510493A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- lead
- molybdate
- excess
- crowns
- ions
- Prior art date
Links
Description
1one
Изобретение относитс к способам получени свинцово-молибдатных кронов, примен емых , например, в производстве авто- и сельскохоз йственных эмалей, красок дл кожи.The invention relates to methods for producing lead-molybdate crowns, used, for example, in the manufacture of auto and agricultural enamels, skin dyes.
Известен способ получени свинцово-молибдатного крона, заключаюпдийс в совместном осаждении хромата, сульфата и молибдата свинца путем добавлени к раствору нитрата свинца раствора смеси осадителей, содержащего хромат-, С)льфат- и молибдат-ионы, при избытке величины ионов свинца в реакционной смеси, с последующей стабилизацией пигмента соединени ми алюмини , промывкой, фильтрацией и сушкой. Свинцово-молибдатный крон, полученный известным спосОбом, имеет невысокую интенсивность (75-85%) и ограниченную цветовую гамму от оранжевого до оранжево-красного цвета.A known method for producing lead-molybdate krone concludes with co-precipitating chromate, sulfate and lead molybdate by adding to the solution of lead nitrate a solution of precipitating mixtures containing chromate, C) acid and molybdate ions, with an excess of lead ions in the reaction mixture, followed by stabilization of the pigment with aluminum compounds, washing, filtering and drying. Lead-molybdate crowns obtained by a known method have a low intensity (75-85%) and a limited range of colors from orange to orange-red.
С целью повышени интенсивности крона и расширени его цветовой гаммы по предлагаемому способу осаждение ведут при одновременном сливе исходных растворов и при посто нной величине избытка ионов свинца в реакционной смеси. Величину избытка ионов свинца поддерживают дл оранжевых кронов 1,5-2,5 г/л, а дл красных кронов 0,3-0,5 г/л.In order to increase the intensity of the crown and expand its color gamut according to the proposed method, the deposition is carried out while simultaneously draining the initial solutions and at a constant amount of excess lead ions in the reaction mixture. The excess of lead ions is maintained at 1.5-2.5 g / l for orange crowns, and 0.3-0.5 g / l for red crowns.
Предлагаемый способ позвол ет повысить интенсивность свинцово-молибдатпых кронов до 100% с одновременным расширением ихThe proposed method allows to increase the intensity of lead-molybdate crowns to 100% with simultaneous expansion of their
цветовом гаммы вплоть до получени насыщенного красного цвета.color range until saturated red.
Пример 1. В реакор-смеситель при 18°С одновременно сливают раствор нитрата свинца , содержащий 66,7 г/л Pb(NO3)2, с рН 4,0 и раствор смеси осадителей, содержащ.ий (г/л) 154 СгОз, 3,34 МоОз, 1,94 SO и 6,3 NaOH, с рН 7,1.Example 1. A lead nitrate solution containing 66.7 g / l of Pb (NO3) 2 with a pH of 4.0 and a solution of a mixture of precipitating agents containing 154 CgOz (g / l) mixed with pH 4.0 are simultaneously drained into the reactor mixer at 18 ° C. , 3.34 MoO3, 1.94 SO, and 6.3 NaOH, with a pH of 7.1.
Реакционна смесь имеет рН 2,1 и избытокThe reaction mixture has a pH of 2.1 and an excess of
ионов свинца по РЬ(ЫОз)2 0,3 г/л. Из реактора-смесител суспензию направл ют в три каскадно расположенных реактора дл вызревани в течение 20 мин, после чего обрабатывают соединени ми кремни , алюмини и сурьмы.lead ions by Pb (IO3) 2 0.3 g / l. From the blender reactor, the suspension is sent to three cascaded reacting reactors for 20 minutes, then treated with compounds of silicon, aluminum and antimony.
Продукт отмывают и сушат при температуре, не превышающей 100°С. Получают красный крон с интенсивностью 100% и укрывистостью 27 г/м.The product is washed and dried at a temperature not exceeding 100 ° C. Red crowns are obtained with an intensity of 100% and a spreading rate of 27 g / m.
Пример 2. В реактор-смеситель при 20°С одновременно сливают раствор нитрата свинца , содержащий 102,3 г/л РЬ(МОз)2, с рН 4,0 и раствор смеси осадителей, содержащий (г/л) 23,1 СгОз, 5,01 МоОз, 2,87 SOa и 12 NaOH, сExample 2. A lead nitrate solution containing 102.3 g / l of Pb (MOz) 2 with a pH of 4.0 and a solution of precipitating mixture containing (g / l) 23.1 CgOz are simultaneously drained into a reactor-mixer at 20 ° C. , 5.01 MoOZ, 2.87 SOa and 12 NaOH, s
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2022243A SU510493A1 (en) | 1974-05-12 | 1974-05-12 | The method of obtaining lead-molybdate crop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2022243A SU510493A1 (en) | 1974-05-12 | 1974-05-12 | The method of obtaining lead-molybdate crop |
Publications (1)
Publication Number | Publication Date |
---|---|
SU510493A1 true SU510493A1 (en) | 1976-04-15 |
Family
ID=20583927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2022243A SU510493A1 (en) | 1974-05-12 | 1974-05-12 | The method of obtaining lead-molybdate crop |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU510493A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5007963A (en) * | 1987-10-22 | 1991-04-16 | Ciba-Geigy Corporation | Novel process for the preparation of lead molybdate pigments and novel lead molybdate pigments |
CN103387263A (en) * | 2013-07-11 | 2013-11-13 | 洛阳理工学院 | Lead molybdate nano crystal material and preparation method thereof |
-
1974
- 1974-05-12 SU SU2022243A patent/SU510493A1/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5007963A (en) * | 1987-10-22 | 1991-04-16 | Ciba-Geigy Corporation | Novel process for the preparation of lead molybdate pigments and novel lead molybdate pigments |
CN103387263A (en) * | 2013-07-11 | 2013-11-13 | 洛阳理工学院 | Lead molybdate nano crystal material and preparation method thereof |
CN103387263B (en) * | 2013-07-11 | 2015-02-11 | 洛阳理工学院 | Lead molybdate nano crystal material and preparation method thereof |
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