发明公开
- 专利标题： STABILISIERUNG VON NATRIUMDITHIONIT MIT DIVERSEN ADDITIVEN
- 专利标题（英）： EP3288892A1 - Stabilization of sodium dithionite by means of various additives
- 专利标题（中）： 不同添加剂对二硫化钠的稳定作用
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申请号： EP16721667.0申请日： 2016-04-19
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公开(公告)号： EP3288892A1公开(公告)日： 2018-03-07
- 发明人: BECKMANN, Eberhard , WEIGUNY, Sabine , GÄRTNER, Martin , FEDERSEL, Katharina
- 申请人： BASF SE
- 申请人地址： Carl-Bosch-Strasse 38 67056 Ludwigshafen am Rhein DE
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： Carl-Bosch-Strasse 38 67056 Ludwigshafen am Rhein DE
- 代理机构： BASF IP Association
- 优先权： EP15165621 20150429
- 国际公布： WO2016173884 20161103
- 主分类号： C01B17/66
- IPC分类号： C01B17/66 ; D06L3/10 ; D21C9/10
摘要：
The invention relates to a method for reducing or preventing the decomposition of a composition Z, containing Z1 a salt of dithionous acid in an amount in the range of 50 to 100 wt% and possibly Z2 an additive selected from the group consisting of alkali metal carbonate, alkaline-earth metal carbonate, alkali metal or alkaline-earth metal tripolyphosphate (Na
5 P
3 O
10 ), alkali metal or alkaline-earth metal sulfite, disulfite, or sulfate, dextrose, and complexing agent in a total amount in the range of 0.0001 to 40 wt%, wherein the components Z1 and, if applicable, Z2 in a solid and/or dry state or in a state of suspension in a solvent are brought into contact with at least one of the following compounds V in a solid and/or dry state or in a state of suspension in a solvent, wherein the compounds V are selected from the group consisting of: (a) oxides of the alkali metals lithium, sodium, potassium, rubidium, cesium, or magnesium, (b) sodium tetrahydroborate (NaBH
4 ), (c) water-free copper(II) sulfate (Cu(SO
4 )), phosphorus pentoxide, and (d) basic amino acids arginine, lysine, histidine, characterized in that the solvent for Z1, Z2 if applicable, and V is practically free of water.
5 P
3 O
10 ), alkali metal or alkaline-earth metal sulfite, disulfite, or sulfate, dextrose, and complexing agent in a total amount in the range of 0.0001 to 40 wt%, wherein the components Z1 and, if applicable, Z2 in a solid and/or dry state or in a state of suspension in a solvent are brought into contact with at least one of the following compounds V in a solid and/or dry state or in a state of suspension in a solvent, wherein the compounds V are selected from the group consisting of: (a) oxides of the alkali metals lithium, sodium, potassium, rubidium, cesium, or magnesium, (b) sodium tetrahydroborate (NaBH
4 ), (c) water-free copper(II) sulfate (Cu(SO
4 )), phosphorus pentoxide, and (d) basic amino acids arginine, lysine, histidine, characterized in that the solvent for Z1, Z2 if applicable, and V is practically free of water.
公开/授权文献
- EP3288892B1 STABILISIERUNG VON NATRIUMDITHIONIT MIT DIVERSEN ADDITIVEN 公开/授权日：2020-09-02
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