Process for producing hypo-phosphorous acid (H.sub.3 PO.sub.2) and
non-transition metal hypophosphites
    4.
    发明授权
    Process for producing hypo-phosphorous acid (H.sub.3 PO.sub.2) and non-transition metal hypophosphites 失效
    生产次磷酸(H3PO2)和非过渡金属次磷酸盐的方法

    公开(公告)号:US4374816A

    公开(公告)日:1983-02-22

    申请号:US207306

    申请日:1980-11-17

    CPC分类号: C01B25/165

    摘要: A process for producing hypophosphorous acid (H.sub.3 PO.sub.2) by reacting, in the absence of a catalyst and under an acidic condition, phosphine with an aqueous solution of hydrogen peroxide to produce an acid solution. The acid solution is then contacted with an non-transition metal hydroxide, oxide or carbonate, e.g. sodium hydroxide, to produce a product composition containing a hypophosphite, e.g. sodium hypophosphite (NaH.sub.2 PO.sub.2.H.sub.2 O). The process of this invention finds particular utility in processes of the type wherein phosphorus is reacted with an aqueous non-transition metal hydroxide composition, e.g. an aqueous suspension of a sodium hydroxide and calcium hydroxide, to produce a hypophosphite and byproduct phosphine. The process of this invention converts a substantial portion of the byproduct phosphine to hypophosphite.

    摘要翻译: 在不存在催化剂的情况下,在酸性条件下使磷化氢与过氧化氢水溶液反应,生成次磷酸(H 3 PO 2)的方法,生成酸溶液。 然后将酸溶液与非过渡金属氢氧化物,氧化物或碳酸盐例如, 氢氧化钠,以产生含有次磷酸盐的产物组合物,例如 次磷酸钠(NaH2PO2·H2O)。 本发明的方法在其中磷与非过渡金属氢氧化物水溶液组合物反应的方法中具有特别的用途。 氢氧化钠和氢氧化钙的水悬浮液,以产生次磷酸盐和副产物膦。 本发明的方法将大部分副产物膦转化为次磷酸盐。

    POLYOLEFIN-BASED FLAME RETARDANT RESIN COMPOSITION AND MOLDED PRODUCT
    6.
    发明申请
    POLYOLEFIN-BASED FLAME RETARDANT RESIN COMPOSITION AND MOLDED PRODUCT 有权
    基于聚烯烃的阻燃树脂组合物和成型产品

    公开(公告)号:US20160304785A1

    公开(公告)日:2016-10-20

    申请号:US14440553

    申请日:2014-12-01

    申请人: LG CHEM, LTD.

    摘要: Disclosed are a polyolefin-based flame retardant resin composition and a molded product. The present invention relates to a polyolefin-based flame retardant resin composition satisfying flame retardancy (particularly, UL94V V-0, V-1, and V-2 grades, an auto ignition property of 15 seconds or less, and eco-friendly flame retardancy), improved extrusion properties, a melt index, tensile elongation, or appearance quality required in use of extruded tube molds and the like for insulation and wiring in electrical and electronic products, and vehicles using a particular phosphate-based flame retardant, and a molded product manufactured from the composition are disclosed.

    摘要翻译: 公开了聚烯烃类阻燃树脂组合物和成型体。 本发明涉及满足阻燃性的聚烯烃系阻燃树脂组合物(特别是UL94V V-0,V-1,V-2等级,15秒以下的自燃特性,环保型阻燃性 ),改进的挤出性能,熔体指数,拉伸伸长率或使用挤出管模等所需的外观质量用于电气和电子产品中的绝缘和布线,以及使用特定磷酸酯类阻燃剂的车辆,以及模制 公开了由该组合物制造的产品。

    PROCESS FOR STABILIZING HYPOPHOSPHITE
    8.
    发明申请
    PROCESS FOR STABILIZING HYPOPHOSPHITE 有权
    稳定磷灰石的方法

    公开(公告)号:US20120208942A1

    公开(公告)日:2012-08-16

    申请号:US13502835

    申请日:2009-10-23

    IPC分类号: C08K3/32 C01B25/165

    CPC分类号: C01B25/165 C09K21/04

    摘要: A process for stabilizing hypophosphite salt is provided, which comprises the following steps: a) washing the hypophosphite salt at least one time under a controlled pH value of 4-11, preferably 5-8, as the said hypophosphite salt in an aqueous solution and/or in a solid state; and b) drying the said hypophosphite salt under reduced pressure to remove the volatiles. The process can prevent or minimize the formation of a dangerous quantity of phosphine from hypophosphite salts, more particularly in the flame retardant of the application. The flame retardant polymer composition is also provided, which comprises a polymer and the hypophosphite salt stabilized by the above process.

    摘要翻译: 提供了一种稳定次磷酸盐的方法,其包括以下步骤:a)在水溶液中作为所述次磷酸盐,在4-11的控制pH值(优选5-8)下洗涤次磷酸盐至少一次至少一次, /或处于固态; 和b)在减压下干燥所述次磷酸盐以除去挥发物。 该方法可以防止或最小化来自次磷酸盐的危险量的膦的形成,尤其是在应用的阻燃剂中。 还提供了阻燃聚合物组合物,其包含通过上述方法稳定的聚合物和次磷酸盐。