Alkaline earth metal ferrite and ferric oxide admixture
    1.
    发明授权
    Alkaline earth metal ferrite and ferric oxide admixture 失效
    碱土金属铁氧体和氧化铁外加剂

    公开(公告)号:US06660242B2

    公开(公告)日:2003-12-09

    申请号:US10035381

    申请日:2001-12-28

    IPC分类号: C01D102

    CPC分类号: C01G49/0036 C04B2235/3274

    摘要: A method is disclosed for the manufacture of particles composed of an intimate admixture of barium or strontium ferrite and ferric oxide from a chloride solution containing barium or strontium ions and ferrous ions by a pyrohydrolysis reaction. The presence of carbon dioxide in the heated atmosphere in which pyrohydrolysis of an admixture of alkaline earth metal chloride and iron chloride is carried out has been discovered to substantially decrease the temperature required for reaction to occur.

    摘要翻译: 公开了一种通过热水解反应制造由钡或锶离子和亚铁离子的氯化物溶液组成的由钡或锶铁氧体和氧化铁组成的颗粒的方法。 已经发现在进行碱土金属氯化物和氯化铁混合物的热水解的加热气氛中存在二氧化碳,以显着降低反应发生所需的温度。

    Separation of polyolefins from nylons
    3.
    发明授权
    Separation of polyolefins from nylons 失效
    从尼龙分离聚烯烃

    公开(公告)号:US07067613B2

    公开(公告)日:2006-06-27

    申请号:US10708693

    申请日:2004-06-04

    IPC分类号: C08F6/00

    摘要: In the recycling of Nylon 6 and Nylon 6,6 polyamides from post-consumer or post-industrial waste, a process is disclosed to separate Nylon 6 and Nylon 6,6 polyamides from commingled polyolefin waste components, particularly polypropylene, by admixing the waste with an ester solvent composition and heating the admixture to a temperature above the melting temperature of the contained polyolefins to form an ester solvent composition further containing dissolved polyamide polymer and a separate immiscible liquid polyolefin phase. The ester solvent composition preferably contains ethylene carbonate, propylene carbonate, butylene carbonate, or mixtures thereof.

    摘要翻译: 在从消费后或后工业废物中回收尼龙6和尼龙6,6聚酰胺的过程中,公开了将尼龙6和尼龙6,6聚酰胺从混合的聚烯烃废料组分,特别是聚丙烯中分离出来,将废物与 酯溶剂组合物并将混合物加热到高于所含聚烯烃的熔融温度的温度,以形成进一步含有溶解的聚酰胺聚合物和单独的不混溶的液体聚烯烃相的酯溶剂组合物。 酯溶剂组合物优选含有碳酸亚乙酯,碳酸亚丙酯,碳酸亚丁酯或其混合物。

    CALCIUM CARBONATE SOIL AMENDMENT AND INDUSTRIAL FILLER DERIVED FROM CARPET BACKING
    5.
    发明申请
    CALCIUM CARBONATE SOIL AMENDMENT AND INDUSTRIAL FILLER DERIVED FROM CARPET BACKING 审中-公开
    碳酸钙土壤修复和工业填充物从地毯背面衍生

    公开(公告)号:US20090300982A1

    公开(公告)日:2009-12-10

    申请号:US12134166

    申请日:2008-06-05

    IPC分类号: C09C1/02 A01B79/02

    CPC分类号: C09C1/021

    摘要: The calcium carbonate component of waste carpet is concentrated by mechanical means and/or chemical means then subjected to a heat treatment at a temperature below the decomposition temperature of calcium carbonate to volatilize or modify organic compounds admixed with calcium carbonate so as to yield a free-flowing particulate filler composed of at least about 70% calcium carbonate.

    摘要翻译: 废弃地毯的碳酸钙组分通过机械方法和/或化学方法进行浓缩,然后在低于碳酸钙分解温度的温度下进行热处理,以使与碳酸钙混合的有机化合物挥发或改性, 流动的颗粒填料由至少约70%的碳酸钙组成。

    Silica-coated alkaline earth metal carbonate pigment
    6.
    发明授权
    Silica-coated alkaline earth metal carbonate pigment 失效
    二氧化硅涂覆的碱土金属碳酸盐颜料

    公开(公告)号:US6136085A

    公开(公告)日:2000-10-24

    申请号:US183330

    申请日:1998-10-29

    IPC分类号: C01F5/24 C01F11/18 C09C1/02

    摘要: A method for forming a silica coating on at least a portion of the surface of alkaline earth metal carbonate particulates in aqueous suspension and the silica-coated alkaline earth metal carbonate so produced are claimed. The claimed method consists of allowing soluble silicate ions in the aqueous phase to slowly react with the alkaline earth metal carbonate surface to form silica micro-particulates on the surface. This silica coating confers upon the composition unique properties among which are pronounced thixotropic behavior when incorporated into an aqueous suspension and increased oil absorption when dry. The pigment produced by this method is especially suited for use as a filler in paper.

    摘要翻译: 一种在水性悬浮液中的碱土金属碳酸盐颗粒的至少一部分表面上形成二氧化硅涂层的方法和如此制备的二氧化硅涂覆的碱土金属碳酸盐。 要求保护的方法包括允许水相中的可溶性硅酸盐离子与碱土金属碳酸盐表面缓慢反应以在表面上形成二氧化硅微粒。 这种二氧化硅涂层赋予组合物独特的性质,其中当掺入水性悬浮液中时具有显着的触变性能,并且当干燥时增加吸油性。 通过该方法制备的颜料特别适合用作纸中的填料。