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    • 34. 发明授权
    • Process for the dearsenification of polyphosphoric acid
    • 多磷酸脱砷方法
    • US4399114A
    • 1983-08-16
    • US402941
    • 1982-07-29
    • Alexander MaurerGero HeymerMarkus Erpenbach
    • Alexander MaurerGero HeymerMarkus Erpenbach
    • C01B25/24C01B25/16
    • C01B25/24
    • The disclosure relates to a process for the continuous dearsenification of polyphosphoric acid with the aid of hydrogen sulfide in a gas admission zone. To this end, the disclosure provides for the acid to be dearsenified in a gas admission zone subdivided so as to comprise at least two separate liquid matter-receiving zones, each zone being separated from the other by means of a separate gas zone; for the liquid in each of the liquid matter-receiving zones to be maintained at a level 0.1 up to 10 cm high, without admission of gas; for hydrogen sulfide which remained unreacted in the individual liquid matter-receiving zones to be collected in the respective gas zone and for it to be finely redispersed in the liquid matter-receiving zone directly upstream of the respective gas zone by allowing the hydrogen sulfide to flow through a plurality of openings into the acid, the latter being delivered from the respective liquid-matter-receiving zone into the next downstream liquid-matter-receiving zone, and introduced thereinto directly below the liquid matter level therein; for precipitated arsenic sulfide to be separated from the acid coming from the lower end of the gas admission zone, and for the filtrate obtained to be freed from gaseous hydrogen sulfide in excess.
    • 本公开涉及在气体入口区借助硫化氢连续脱砷多磷酸的方法。 为此,本公开内容提供了在气体进入区域中进行脱砷的酸,其被细分为包括至少两个分离的液体物质接收区域,每个区域通过单独的气体区域与另一个区域分离; 使每个液体物质接收区域中的液体保持在0.1至10厘米高的水平,而不允许气体; 对于在各个液体物质接收区中保持未反应的硫化氢,其被收集在各个气体区中,并且通过允许硫化氢流动直接在各个气体区的上游被精细地再分散在液体物质接收区中 通过多个开口进入酸,后者从相应的液体接收区输送到下一个下游液体接收区,并直接在其中引入液体物质的下方; 使沉淀的硫化砷与气体入口区的下端的酸分离,得到的过滤得到的无水硫化氢的滤液。
    • 36. 发明授权
    • Process for making aqueous alkali metal phosphate solutions
    • 制备碱金属磷酸盐水溶液的方法
    • US4385041A
    • 1983-05-24
    • US326078
    • 1981-11-30
    • Klaus JoddenGero Heymer
    • Klaus JoddenGero Heymer
    • C01B25/30C01B15/16C01B25/26
    • C01B25/30
    • The invention relates to a process for making aqueous alkali metal phosphate solutions by subjecting aqueous alkali metal phosphite solutions to catalytic oxidation with oxygen or air. More particularly, oxygen or air in stoichiometric excess proportions is introduced into the aqueous alkali metal phosphite solution at about 30.degree. to 110.degree. C., at a pH-value of 0 to about 8, and in the presence of SiO.sub.2 or aluminum silicate containing at most 10 weight % Al.sub.2 O.sub.3, for as long as necessary to achieve conversion of the alkali metal phosphite to alkai metal phosphate. After completion of the oxidation, the aqueous solution is separated from the catalyst.
    • 本发明涉及通过使碱金属亚磷酸盐水溶液用氧气或空气进行催化氧化来制备碱金属磷酸盐水溶液的方法。 更具体地说,在约30℃至110℃,pH值为0至约8的条件下,在含碱金属亚磷酸盐水溶液中的化学计量过量的氧气或空气中,在含有 至多10重量%的Al 2 O 3,只要需要实现碱金属亚磷酸盐转化为磷酸金属。 氧化完成后,将水溶液与催化剂分离。
    • 38. 发明授权
    • Production of an anticorrosive pigment on phosphate basis
    • 以磷酸盐为基础生产防腐颜料
    • US4294621A
    • 1981-10-13
    • US141135
    • 1980-04-16
    • Alexander MaurerRenate AdrianKlaus HestermannGero Heymer
    • Alexander MaurerRenate AdrianKlaus HestermannGero Heymer
    • C09D5/08C01B25/32C09C1/00C09C1/02C08K3/10
    • C01B25/322C01B25/325C09C1/02C01P2004/61C01P2006/12
    • The invention relates to the production of phosphorus-containing anticorrosive pigments with a particle size of at most 20 microns by reacting one or more calcium or magnesium compounds with phosphoric acid or acid alkali metal or ammonium phosphates by intimately mixing an aqueous suspension or solution of the reactants inside a dispersing means rotating at a speed of 3000 to 10,000 rpm. More particularly, fine pulverulent calcium and magnesium compounds are converted, with agitation, together with water and, if desired, a water-soluble alkanol to a homogeneous suspension or solution. The suspension or solution is intimately mixed, inside the dispersing means at 0.degree. to 40.degree. C. and in an approximately stoichiometric ratio, with the phosphoric acid or acid phosphate solution. Resulting and precipitated pigment is separated and dried under mild conditions while maintaining its content of water of crystallization. The anticorrosive pigment is comprised of a homogeneous mixture and/or mixed crystals of which 10 to 95 mol % is calcium hydrogen phosphate dihydrate, the balance being magnesium hydrogen phosphate trihydrate. An at least 55 weight % proportion consists of particles with a size of up to 5 microns with a BET-surface of at least 1 m.sup.2 /g.
    • 本发明涉及通过使一种或多种钙或镁化合物与磷酸或酸性碱金属或铵磷酸盐反应,通过将下列物质的水性悬浮液或溶液紧密混合,从而生产粒径至多为20微米的含磷防腐颜料 分散装置内的反应物以3000至10,000rpm的速度旋转。 更具体地,精细的粉末状钙和镁化合物在搅拌下与水一起转化,如果需要,将水溶性链烷醇转化成均匀的悬浮液或溶液。 悬浮液或溶液在分散装置内在0℃至40℃下以大约化学计量比与磷酸或酸式磷酸盐溶液紧密混合。 将所得沉淀的颜料分离并在温和条件下干燥,同时保持其结晶水含量。 防腐颜料由均匀的混合物和/或其中10〜95摩尔%为磷酸氢钙二水合物的混合晶体组成,余量为磷酸氢二氢钙三水合物。 至少55重量%的比例由尺寸高达5微米,BET表面至少为1m 2 / g的颗粒组成。
    • 39. 发明授权
    • Continuous production of organic phosphines
    • 连续生产有机膦
    • US4163760A
    • 1979-08-07
    • US872250
    • 1978-01-25
    • Georg ElsnerGero HeymerHans-Werner Stephan
    • Georg ElsnerGero HeymerHans-Werner Stephan
    • C07F9/50C07F9/6568C07F9/54
    • C07F9/5059C07F9/65683
    • Organic phosphines are produced by reacting an alkylene, cycloalkylene or aralkylene in the presence of a free radical-yielding catalyst. More specifically, a pressure reactor, which is provided in its interior with mixing elements, kept free from oxygen, and subdivided so as to comprise an upper cooling zone and a lower reaction zone, is continuously supplied from above with (a) a solution of the alkylene, cycloalkylene or aralkylene and the catalyst in an inert solvent, and (b) a stoichiometric excess of hydrogen phosphide, the said (a) and (b) reactants being supplied jointly with but separately from one another; the (a) and (b) reactants are mixed in the upper cooling zone of the reactor at about 0.degree. to 35.degree. C. and under a PH.sub.3 -pressure of about 80 to 300 bars; the resulting mixture, which travels downwardly in the reactor, is reacted in the lower reaction zone at about 90.degree. to 190.degree. C., the reactants being allowed to remain in the reactor for a period of time about 13 to 15 times longer than the half life period of the catalyst; the reaction mixture is removed through the bottom portion of the reactor and subjected to distillation so as to separate the organic phosphines.
    • 有机膦通过在产生自由基的催化剂存在下使亚烷基,亚环烷基或亚芳烷基反应来制备。 更具体地,在其内部设置有保持无氧的并且被分为包括上部冷却区和下部反应区的混合元件的压力反应器从上方连续地供给(a) 所述(a)和(b)反应物是由彼此共同供应的;(b)化学计量过量的磷酸氢盐,所述(a)和(b) (a)和(b)反应物在反应器的上部冷却区中在约0℃至35℃下混合,并在约80至300巴的PH3压力下混合; 在反应器中向下移动的所得混合物在下部反应区中在约90℃至190℃下反应,使反应物在反应器中保留约13至15倍的时间 催化剂的半衰期; 将反应混合物通过反应器的底部除去并进行蒸馏以分离有机膦。