Process for the preparation of esters
    5.
    发明授权
    Process for the preparation of esters 失效
    制备胚胎的方法

    公开(公告)号:US5177229A

    公开(公告)日:1993-01-05

    申请号:US727950

    申请日:1991-07-10

    IPC分类号: C07C67/08

    CPC分类号: C07C67/08

    摘要: Alcohols and acids are esterified by means of liquid-phase equilibrium reactions on ion exchangers in an apparatus comprising a prereactor and a rectifying column with external reactors. The process is characterized by the fact that a portion of one of the starting compounds is fed directly to the external reactors.

    摘要翻译: 在包含预反应器和具有外部反应器的精馏塔的装置中,醇和酸通过液相平衡反应在离子交换剂上酯化。 该方法的特征在于将一种起始化合物的一部分直接进料至外部反应器。

    Process for the production of 2,6-di-tert-butylphenol
    6.
    发明授权
    Process for the production of 2,6-di-tert-butylphenol 失效
    生产2,6-二叔丁基苯酚的方法

    公开(公告)号:US5091594A

    公开(公告)日:1992-02-25

    申请号:US625400

    申请日:1990-12-11

    CPC分类号: C07C37/14

    摘要: For producing 2,6-di-tert-butylphenol and products therefrom, utilizing small quantities of aluminum tris-(2-tert-butylphenolate as a catalyst by reaction of 2-tert-butylphenol with isobutene in the liquid phase, the reaction is performed in the presence of diluents such as liquid saturated aliphatic or cycloaliphatic hydrocarbons, C.sub.5 -C.sub.16 alkenes of formula R.sub.1 --CH.dbd.CH.sub.2 or R.sub.2 --CH.dbd.CH--R.sub.3, C.sub.5 to C.sub.12 cycloalkenes, which contain no branching on the C.dbd.C-bond, excess isobutene or mixtures thereof, at temperatures of 0.degree. C. to 80.degree. C., pressures of 0.1 to 11 bars and catalyst amounts of 0.005 to 5 mol %, based on 2-tert-butylphenol. High conversions are obtained with few undesirable trialkylated products.

    摘要翻译: 为了制备2,6-二叔丁基苯酚及其产物,使用少量的三 - (2-叔丁基苯酚)铝作为催化剂,通过2-叔丁基苯酚与异丁烯在液相中反应,进行反应 在稀释剂如液体饱和脂族或脂环族烃存在下,式R 1 -CH = CH 2或R 2 -CH = CH-R 3的C5-C16烯烃,C = C键上不含支链的C 5 -C 12环烯烃 ,过量异丁烯或其混合物,在0℃至80℃的温度下,0.1至11巴的压力和0.005至5摩尔%的催化剂量,基于2-叔丁基苯酚,获得高转化率,少量 不希望的三烷基化产物。