Temperature-resistant black pigment, a process for its production and
its use
    5.
    发明授权
    Temperature-resistant black pigment, a process for its production and its use 失效
    耐温黑色颜料,其生产和使用的过程

    公开(公告)号:US5269841A

    公开(公告)日:1993-12-14

    申请号:US901214

    申请日:1992-06-18

    摘要: A temperature-resistant black pigment which is a mixed oxide of manganese and iron with the structure of hematite and having a manganese content of 3 to 35% by weight, and with absolute color values in colorimetric testing in paint systems, expressed in CIELAB units, in the lightened form (Blend of 10 parts titaniumdioxide and 1 part of black pigment) of 60 to 70 for L*, -0.5 to 1.9 for a* and -4 to -6.5 for b* useful for coloring autoclave-cured building materials and for pigmenting heat-resistant paint systems is obtained by preparing a precursor material of manganese and iron oxides or hydroxides, which contains the phase with the structure of spinel and calcining that precursor material in an oxidizing atmosphere at 500.degree. to 1,000.degree. C.

    摘要翻译: 作为锰和铁的混合氧化物的耐温黑色颜料,具有赤铁矿结构,锰含量为3〜35重量%,涂料体系的比色试验中的绝对颜色值以CIELAB单位表示, 以减轻的形式(10份二氧化钛和1份黑色颜料的共混物)对于L *为60至70,对于a *为-0.5至1.9,对于用于着色高压釜固化建筑材料的b *为-4至-6.5; 用于着色耐热涂料体系的方法是通过制备锰和氧化铁或氢氧化物的前体材料来制备的,所述前体材料含有具有尖晶石结构的相,并在500-1000℃的氧化气氛中煅烧该前体材料。

    Process for production of black manganese/iron oxide pigment
    7.
    发明授权
    Process for production of black manganese/iron oxide pigment 失效
    生产黑锰铁氧化物颜料的方法

    公开(公告)号:US5154769A

    公开(公告)日:1992-10-13

    申请号:US644320

    申请日:1991-01-22

    摘要: A black manganese/iron oxide pigment having a spinel structure and having the composition Mn.sub.x Fe.sub.3-x O.sub.4 wherein x has a value from 0.1 to 0.9, is prepared by the steps:a) oxidizing iron(II) salts or mixtures of iron(II) salts and manganese(II) salts, in solution or after reaction with alkaline precipitants, with manganese dioxide or other compounds containing manganese in high valency,b) additionally oxidizing the salts of (a) to establish an Fe(III) content therein with another oxidizing agent, andc) filtering, washing, drying and grinding the pigment;and the pigment is useful for pigmenting building materials to a black color.

    摘要翻译: 具有尖晶石结构并具有组成Mn x Fe 3-x O 4的黑色锰/氧化铁颜料,其中x为0.1-0.9,其值为:a)氧化铁(II)盐或铁(II)盐的混合物 和锰(II)盐,与碱性沉淀剂反应后,与二氧化锰或其它含有高价锰的化合物,b)另外氧化(a)以形成其中的Fe(III)含量的盐,另外氧化 试剂,和c)过滤,洗涤,干燥和研磨颜料; 并且颜料可用于将建筑材料着色成黑色。