Process for making ortho-alkylated phenols
    11.
    发明授权
    Process for making ortho-alkylated phenols 失效
    制备邻烷基化酚的方法

    公开(公告)号:US4503272A

    公开(公告)日:1985-03-05

    申请号:US496696

    申请日:1983-05-20

    CPC classification number: C07C37/16

    Abstract: A process for making ortho-alkylated phenols by reacting in the vapor phase an alkyl alcohol and a phenolic compound in the presence of an alkylation catalyst, said catalyst provided by a calcination residue of mixture comprising a magnesium-containing material and manganese hydroxide formed as a precipitate by bringing together an aqueous solution of a manganese salt and an aqueous solution of ammonium hydroxide in the presence of said magnesium-containing material.

    Abstract translation: 一种通过在烷基醇和酚类化合物的存在下在烷基化催化剂的存在下在气相中反应制备邻烷基化酚的方法,所述催化剂由包含含镁材料和氢氧化锰的混合物的煅烧残余物提供,所述氢氧化物形成为 在所述含镁材料存在下,将锰盐水溶液和氢氧化铵水溶液接合在一起沉淀。

    Ortho-alkylation catalysts based on magnesium and prepared by calcining
in presence of feed mixture of reactants
    14.
    发明授权
    Ortho-alkylation catalysts based on magnesium and prepared by calcining in presence of feed mixture of reactants 失效
    基于镁的正烷基化催化剂,并通过在反应物的进料混合物存在下煅烧制备

    公开(公告)号:US4900708A

    公开(公告)日:1990-02-13

    申请号:US547482

    申请日:1983-11-01

    CPC classification number: C07C37/16 Y02P20/52

    Abstract: Ortho-alkylated phenols are prepared by reacting phenol unsubstituted in at least one ortho position with an alcohol in the presence of an ortho-alkylation catalyst consisting of magnesium carbonate, magnesium hydroxide or a mixture of both. The catalyst is used in the absence of a promoter compound and with or without polymeric binder.

    Abstract translation: 在由碳酸镁,氢氧化镁或它们的混合物组成的邻位烷基化催化剂的存在下,使至少一个邻位的未取代苯酚与醇反应来制备正烷基化酚。 该催化剂用于不存在助催化剂化合物并且具有或不具有聚合物粘合剂。

    Catalyst and method for ortho-alkylation of hydroxyaromatic compounds
    16.
    发明授权
    Catalyst and method for ortho-alkylation of hydroxyaromatic compounds 失效
    用于羟基芳族化合物的邻烷基化的催化剂和方法

    公开(公告)号:US4554267A

    公开(公告)日:1985-11-19

    申请号:US500684

    申请日:1983-06-03

    CPC classification number: C07C37/16 B01J23/74

    Abstract: Hydroxyaromatic compounds such as phenol are alkylated with alkanols such as methanol in the presence of a catalyst comprising magnesium oxide with up to about 0.1% by weight of copper deposited thereon in a layer of submicroscopic thickness. The catalyst is prepared by preparing a slurry of a substantially water-insoluble magnesium reagent such as magnesium hydroxide or magnesium carbonate in an aqueous solution of at least one copper salt, removing and drying the solid phase, and calcining the same at a temperature within the range of about 350.degree.-550.degree. C. The catalyst promotes ortho-alkylation of the hydroxyaromatic compound in high yield, minimizes decomposition of the alkanol, and has long life.

    Abstract translation: 羟基芳族化合物如苯酚在含有氧化镁的催化剂存在下,用链烷醇如甲醇进行烷基化,其中沉积有至少约0.1%(重量)的铜在亚显微厚度的层中。 通过在至少一种铜盐的水溶液中制备基本上不溶于水的镁试剂如氢氧化镁或碳酸镁的浆料来制备催化剂,除去和干燥固相,并在其内的温度下煅烧催化剂 范围约350〜-550℃。催化剂以高产率促进羟基芳族化合物的邻位烷基化,使链烷醇的分解最小化,寿命长。

    Polyphenylene ether compositions
    18.
    发明授权

    公开(公告)号:US4373064A

    公开(公告)日:1983-02-08

    申请号:US246383

    申请日:1981-03-23

    CPC classification number: C08L51/04 C08L71/123

    Abstract: There are provided thermoplastic compositions comprising a polyphenylene ether and a rubber modified polystyrene resin having a discontinuous phase of polystyrene particles englobed in diene rubber membranes, the particles being between about 0.1 and 0.7 microns in diameter. Such compositions provide molded articles with substantial and unexpected improvements in impact resistance and ability to transmit light in comparison with known compositions of such rubber modified polystyrenes alone or those of other polystyrenes combined with polyphenylene ethers.

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