Process for producing coated bismuth vanadate yellow pigments
    42.
    发明授权
    Process for producing coated bismuth vanadate yellow pigments 失效
    涂覆的钒酸铋黄色颜料的制备方法

    公开(公告)号:US5851587A

    公开(公告)日:1998-12-22

    申请号:US585123

    申请日:1996-01-11

    摘要: The present invention relates to a process for producing coated bismuth vanadate yellow pigments comprising the following steps: (a) subjecting a reaction mixture comprising a suspension in nitric acid of bismuthyl nitrate and vanadium (V) oxide, or a suspension in nitric acid of bismuth (III) oxide and vanadium (V) oxide, to stirring to form bismuth vanadate particles; (b) terminating the stirring and holding the reaction mixture for a period of time; (c) filtering off the bismuth vanadate particles; (d) washing the bismuth vanadate particles; (e) dispersing the washed bismuth vanadate particles in a hot, phosphate-containing, aqueous solution to activate the surface of the particles; (f) filtering off the activated bismuth vanadate particles; (g) washing the activated bismuth vanadate particles; (h) dispersing the activated bismuth vanadate particles in water to form a suspension; (i) precipitating at least one material selected from the group consisting of hydrated aluminum phosphate, aluminum/zinc phosphate or silicon oxide onto the external surface of the activated bismuth vanadate particles in the suspension to form said coating; (j) filtering off the coated bismuth particles; (k) washing and drying the coated bismuth vanadate particles.

    摘要翻译: 本发明涉及一种制备涂覆的钒酸铋黄色颜料的方法,包括以下步骤:(a)使含有硝酸铋硝酸盐和氧化钒(V)的硝酸的悬浮液或铋的硝酸悬浮液 (III)氧化物和钒(V)氧化物,搅拌形成钒酸铋颗粒; (b)终止搅拌并保持反应混合物一段时间; (c)过滤掉钒酸铋颗粒; (d)洗涤钒酸铋颗粒; (e)将经洗涤的钒酸铋颗粒分散在含热磷酸盐的水溶液中以活化颗粒的表面; (f)过滤掉活化的钒酸铋颗粒; (g)洗涤活化的钒酸铋颗粒; (h)将活化的钒酸铋颗粒分散在水中以形成悬浮液; (i)将悬浮液中活化的钒酸铋颗粒的外表面上的至少一种选自水合磷酸铝,磷酸铝/磷酸锌或氧化硅的材料析出,形成所述涂层; (j)过滤掉涂覆的铋颗粒; (k)洗涤和干燥涂覆的钒酸铋颗粒。

    Lamellar pigment particle dispersion
    43.
    发明授权
    Lamellar pigment particle dispersion 失效
    层状颜料颗粒分散体

    公开(公告)号:US5773492A

    公开(公告)日:1998-06-30

    申请号:US806514

    申请日:1997-02-24

    CPC分类号: C09D17/006 C09D5/36 C09D5/38

    摘要: Lamellar pigment particles are provided in a form that is readily used for coating compositions by use of a dispersion. The dispersion contains the pigment particles in an amount of 20-55% by weight, and also includes a carrier that is compatible with the vehicle of the intended coating composition. The dispersions are stable and provide essentially complete separation of the lamellar pigment particles.

    摘要翻译: 以使用分散体容易地用于涂料组合物的形式提供层状颜料颗粒。 分散体含有20-55重量%的颜料颗粒,并且还包括与预期涂料组合物的载体相容的载体。 分散体是稳定的并且提供层状颜料颗粒的基本完全分离。

    Pulverulent pigment preparation
    45.
    发明授权
    Pulverulent pigment preparation 失效
    粉状颜料制剂

    公开(公告)号:US5681876A

    公开(公告)日:1997-10-28

    申请号:US670524

    申请日:1996-06-27

    摘要: Pulverulent pigment preparation comprising a) an organic or inorganic pigment, b) a compound from the group consisting of novolaks, alkoxylated fatty alcohols, bisphenol polyglycol ethers, alkoxylated fatty amines, alkoxylated fatty acids or the esterification and/or arylation products prepared from a natural or modified castor oil fatty compound, which are alkoxylated and, if desired, esterified with dicarboxylic acids to form linked structural repeating units, c) a water-soluble mixture of polyvinyl alcohol and vinyl alcohol or of vinyl alcohol copolymers, and d) further customary additives, the sum of all components being 100% by weight. Plasters and emulsion paints are pigmented by simply stirring in the pulverulent pigment preparation.

    摘要翻译: 包含a)有机或无机颜料的粉末颜料制剂,b)由酚醛清漆,烷氧基化脂肪醇,双酚聚乙二醇醚,烷氧基化脂肪胺,烷氧基化脂肪酸组成的组中的化合物或由天然产物制备的酯化和/或芳基化产物 或修饰的蓖麻油脂肪化合物,其被烷氧基化,并且如果需要,用二羧酸酯化形成连接的结构重复单元,c)聚乙烯醇和乙烯醇或乙烯醇共聚物的水溶性混合物,以及d)进一步的常规 添加剂,所有组分的总和为100重量%。 通过在粉状颜料制剂中简单搅拌,可以使灰泥和乳液漆着色。

    Composite pigmentary material
    46.
    发明授权
    Composite pigmentary material 失效
    复合颜料材料

    公开(公告)号:US5672201A

    公开(公告)日:1997-09-30

    申请号:US611300

    申请日:1996-03-05

    摘要: A process for preparing a structured composite pigmentary material comprises forming a dispersion of uncoated particles of titanium dioxide at a pH value at which the particles have a surface charge and subjecting the dispersion to cross-flow filtration until the dispersion contains more than 50% by weight titanium dioxide. The concentrated dispersion is mixed with a dispersion of chemically distinct particles having a surface charge of opposite sign under conditions which ensure that the sign of the surface charge on either of the particulate materials is not reversed. In the resultant composite pigmentary material the titanium dioxide particles are held in association with the chemically distinct particles as a result of said surface charges. The structured composite can be used to produce paints having higher opacity than conventional paints containing an equivalent amount of titanium dioxide and the durability of these paints is better than a conventional paint containing a similar amount of uncoated titanium dioxide.

    摘要翻译: 一种制备结构复合颜料材料的方法包括在该颗粒具有表面电荷的pH值下形成二氧化钛的未涂覆颗粒的分散体,并对该分散体进行交叉流过滤,直到分散体含有超过50重量% 二氧化钛。 将浓缩的分散体与具有相反符号表面电荷的化学上不同的颗粒的分散体混合,确保任一粒状材料上的表面电荷的符号不被反转。 在所得的复合颜料材料中,作为所述表面电荷的结果,二氧化钛颗粒与化学上不同的颗粒结合在一起。 结构化复合材料可用于生产具有比含有等量的二氧化钛的常规涂料更高的不透明度的涂料,并且这些涂料的耐久性优于含有相似量的未涂覆二氧化钛的常规涂料。

    Method of making moisture resistant aluminum nitride powder and powder
produced thereby
    47.
    发明授权
    Method of making moisture resistant aluminum nitride powder and powder produced thereby 失效
    制造耐湿氮化铝粉末的方法和由此制备的粉末

    公开(公告)号:US5601874A

    公开(公告)日:1997-02-11

    申请号:US578931

    申请日:1995-12-27

    摘要: A method for making a moisture-resistant aluminum nitride-containing powder which includes (a) coating a layer of silicate onto aluminum nitride-containing powder having aluminum nitride on at least a portion of its surface and (b) heat-treating the coated aluminum nitride-containing powder at a temperature of from 350.degree. to 1000.degree. C. for a period of time sufficient to cause the silicate to react with the surface aluminum nitride thereby forming a layer of Si--Al--O--N bonded to the surface aluminum nitride. The silicate has alkyl or alkoxyalkyl radicals attached thereto. The method yields a moisture-resistant aluminum nitride-containing powder having a layer of Si--Al--O--N reaction-bonded to the surface aluminum nitride.

    摘要翻译: 一种制造耐湿氮化铝的粉末的方法,其包括(a)在其表面的至少一部分上将含硅氮化物的氮化铝粉末涂覆到含氮化铝的粉末上,以及(b)将所述涂覆的铝 含氮粉末在350〜1000℃的温度下搅拌足以使硅酸盐与表面氮化铝反应的时间,从而形成与表面氮化铝结合的Si-Al-ON层。 硅酸盐具有与其连接的烷基或烷氧基烷基。 该方法产生具有与表面氮化铝反应结合的Si-Al-O-N层的耐湿氮化铝粉末。

    Method of making moisture resistant aluminum nitride powder and powder
produced thereby
    50.
    发明授权
    Method of making moisture resistant aluminum nitride powder and powder produced thereby 失效
    制造耐湿氮化铝粉末的方法和由此制备的粉末

    公开(公告)号:US5508110A

    公开(公告)日:1996-04-16

    申请号:US351450

    申请日:1994-12-08

    申请人: Kevin E. Howard

    发明人: Kevin E. Howard

    摘要: A method for making a moisture-resistant aluminum nitride-containing powder which includes (a) coatng a layer of silicate onto aluminum nitride-containing powder having aluminum nitride on at least a portion of its surface and (b) heat-treating the coated aluminum nitride-containing powder at a temperature of from 350.degree. to 1000.degree. C. for a period of time sufficient to cause the silicate to react with the surface aluminum nitride thereby forming a layer of Si--Al--O--N bonded to the surface aluminum nitride. The silicate has alkyl or alkoxyalkyl radicals attached thereto. The method yields a moisture-resistant aluminum nitride-containing powder having a layer of Si--Al--O--N reaction-bonded to the surface aluminum nitride.

    摘要翻译: PCT No.PCT / US93 / 00978 Sec。 371日期1994年12月8日第 102(e)日期1994年12月8日PCT提交1993年1月28日PCT公布。 公开号WO93 / 25496 日本1993年12月23日。一种制造耐湿氮化铝的粉末的方法,其包括(a)在其表面的至少一部分上含氮化铝的含氮化铝的粉末上涂覆硅酸盐层,(b )在350〜1000℃的温度下对涂覆的含氮化铝的粉末进行热处理一段足以使硅酸盐与表面氮化铝反应的时间,从而形成Si-Al-ON层 结合到表面的氮化铝。 硅酸盐具有与其连接的烷基或烷氧基烷基。 该方法产生具有与表面氮化铝反应结合的Si-Al-O-N层的耐湿氮化铝粉末。