PROCESS FOR PREPARING MERCAPTOALKYL CARBOXYLATES
    1.
    发明申请
    PROCESS FOR PREPARING MERCAPTOALKYL CARBOXYLATES 有权
    制备羧甲基纤维素的方法

    公开(公告)号:US20130217912A1

    公开(公告)日:2013-08-22

    申请号:US13591398

    申请日:2012-08-22

    IPC分类号: C07C319/12

    摘要: In the acid-catalyzed esterification of mercaptoalkyl alcohols by means of carboxylic acids to form mercaptoalkly carboxylates, formation of undesirable, usually sparingly soluble by-products usually occurs. The process of the invention in the absence of acid catalysts avoids the formation of such by-products. Particularly when the esterification of the invention is carried out as reactive distillation using reactive column and residence vessel, good degrees of conversion can also be obtained without acid catalyst and at the same time the formation of the by-products can be largely avoided.

    摘要翻译: 在巯基烷基醇通过羧酸进行酸催化酯化形成巯基羧酸酯时,通常会发生不期望的,通常微溶的副产物。 在没有酸催化剂的情况下,本发明的方法避免了这种副产物的形成。 特别是当本发明的酯化作为使用反应性柱和驻留容器的反应蒸馏进行时,也可以在没有酸催化剂的情况下获得良好的转化率,同时可以大大地避免副产物的形成。

    Process for preparing mercaptoalkyl carboxylates
    2.
    发明授权
    Process for preparing mercaptoalkyl carboxylates 有权
    巯基烷基羧酸盐的制备方法

    公开(公告)号:US08907119B2

    公开(公告)日:2014-12-09

    申请号:US13591398

    申请日:2012-08-22

    IPC分类号: C07C319/12 C07C319/22

    摘要: In the acid-catalyzed esterification of mercaptoalkyl alcohols by means of carboxylic acids to form mercaptoalkly carboxylates, formation of undesirable, usually sparingly soluble by-products usually occurs. The process of the invention in the absence of acid catalysts avoids the formation of such by-products. Particularly when the esterification of the invention is carried out as reactive distillation using reactive column and residence vessel, good degrees of conversion can also be obtained without acid catalyst and at the same time the formation of the by-products can be largely avoided.

    摘要翻译: 在巯基烷基醇通过羧酸进行酸催化酯化形成巯基羧酸酯时,通常会发生不期望的,通常微溶的副产物。 在没有酸催化剂的情况下,本发明的方法避免了这种副产物的形成。 特别是当本发明的酯化作为使用反应性柱和驻留容器的反应蒸馏进行时,也可以在没有酸催化剂的情况下获得良好的转化率,同时可以大大地避免副产物的形成。