Preparation of polyaryl ethers with nitrogen compound catalysts
    1.
    发明授权
    Preparation of polyaryl ethers with nitrogen compound catalysts 失效
    用氮化合物催化剂制备聚芳醚

    公开(公告)号:US5298592A

    公开(公告)日:1994-03-29

    申请号:US932991

    申请日:1992-08-20

    IPC分类号: C08G65/40 C08G75/23

    CPC分类号: C08G75/23 C08G65/4087

    摘要: A process for preparing polyaryl ethers of the formula I or Ia ##STR1## by condensation of at least one appropriate bisphenol with at least one appropriate aromatic dichloride in the presence of an alkali metal carbonate in a dipolar aprotic solvent, is carried out in the presence of a catalyst selected from the alkali metal nitrites and the group of compounds of the formula II ##STR2## where r.sup.1 and r.sup.3 are each hydrogen, C.sub.7 -C.sub.16 -phenylalkyl, C.sub.1 -C.sub.12 -alkoxy, fluorine, chlorine, bromine, iodine or nitro, and R.sup.2 is nitro or nitroso, or ##STR3## where R.sup.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, fluorine, chlorine, bromine or iodine.

    摘要翻译: 通过将至少一种适当的双酚与至少一种适当的芳族二氯化物在碱金属碳酸盐存在下缩合制备式I或Ia的聚芳基醚的方法(图1) 在偶极非质子溶剂中,在选自碱金属亚硝酸盐和式II化合物的组的催化剂存在下进行,其中r1和r3各自为氢,C7-C16 - 苯基烷基,C1- C 12 - 烷氧基,氟,氯,溴,碘或硝基,R 2为硝基或亚硝基,或者其中R 4为氢,C 1 -C 4烷基,氟,氯,溴或碘。

    Process for the preparation of bis(4-hydroxyphenyl) sulfone
    3.
    发明授权
    Process for the preparation of bis(4-hydroxyphenyl) sulfone 失效
    制备BIS(4-羟基苯基)硫醚的方法

    公开(公告)号:US5072049A

    公开(公告)日:1991-12-10

    申请号:US460648

    申请日:1990-01-03

    IPC分类号: C07C315/00 C07C317/22

    CPC分类号: C07C315/00

    摘要: A process for the preparation of bis(4-hydroxyphenyl) sulfone by reacting phenol with sulfuric acid at a temperature of from 140.degree. to 230.degree. C., wherein the sulfuric acid is metered in to the phenol only after the reaction temperature has been reached, the phenol and sulfuric acid are used in a molar ratio of from 1:1 to 25:1 and the reaction is carried out in the absence of an inert solvent.

    摘要翻译: 在140〜230℃的温度下,通过苯酚与硫酸反应来制备双(4-羟基苯基)砜的方法,其中只有在达到反应温度之后,将硫酸计量加入到苯酚中 ,苯酚和硫酸的摩尔比为1:1至25:1,反应在不存在惰性溶剂的情况下进行。

    Method for producing a liquid formulation of salts of sulfoacidic azo dyes
    10.
    发明授权
    Method for producing a liquid formulation of salts of sulfoacidic azo dyes 失效
    制备磺酸偶氮染料盐液体制剂的方法

    公开(公告)号:US07488810B2

    公开(公告)日:2009-02-10

    申请号:US10534057

    申请日:2003-11-17

    IPC分类号: C09B35/52 C09B67/26

    摘要: A process for preparing a liquid formulation of salts of sulfonated azo dyes, comprising a) preparing vesuvin from m-phenylenediamine; b) without interveningly isolating the vesuvin coupling an at least equimolar amount of diazotized aminoarylsulfonic acids I H2N—Ar—SO3H  (I), where Ar is phenylene (which may be monosubstituted by sulfo) or naphthalene (which may be mono- or disubstituted by sulfo and/or monosubstituted by hydroxyl) onto vesuvin and c) isolating the dyes in their acid form and subsequently dissolving them in aqueous bases.

    摘要翻译: 一种制备磺化偶氮染料盐的液体制剂的方法,包括a)由间苯二胺制备维维酮; b)不干涉地将维苏文耦合分离至少等摩尔量的重氮化氨基芳基磺酸I <βin-line-formula description =“In-line Formulas”end =“lead”→> H2N-Ar-SO3H(I) 其中Ar为亚苯基(可以被磺基单取代)或萘(可以被磺基单取代或/或被单取代) 羟基),并且c)以它们的酸形式分离染料,随后将它们溶解在水性碱中。