Internal mold release for reaction injection molded polyurethanes
    13.
    发明授权
    Internal mold release for reaction injection molded polyurethanes 失效
    反应注塑聚氨酯的内部脱模

    公开(公告)号:US4585829A

    公开(公告)日:1986-04-29

    申请号:US614712

    申请日:1984-05-29

    摘要: A method of imparting internal mold release properties to reaction injection molding polyurethane compositions by the addition of a perfluoroalkylorganocarboxylic acid or a salt thereof. This invention also relates to the production of novel perfluoroalkylorganodibutyltindioxide compounds which are inherently catalytic and can also impart the property of internal mold releasability to RIM compositions.

    摘要翻译: 通过加入全氟烷基有机羧酸或其盐赋予反应注塑聚氨酯组合物内部脱模性能的方法。 本发明还涉及新型全氟烷基有机二丁基二氧化锡化合物的生产,其本身是催化性的,并且还可赋予RIM组合物内部脱模性能。

    Method of increasing solubility of enzymes
    14.
    发明授权
    Method of increasing solubility of enzymes 失效
    提高酶溶解度的方法

    公开(公告)号:US4738925A

    公开(公告)日:1988-04-19

    申请号:US728243

    申请日:1985-04-29

    CPC分类号: C12N9/00 C12N9/50 Y10S435/816

    摘要: A method is provided for increasing the solubility of an enzyme in an aqueous solution comprising providing a water-soluble anionic surfactant to the solution and further providing the solution with a pH above that which result in the formation of an enzyme/surfactant precipitate. The application is further directed to an aqueous solution containing an anionic surfactant and having an enzyme concentration contained therein which is higher than that possible in the absence of the surfactant.

    摘要翻译: 提供了一种提高酶在水溶液中的溶解度的方法,包括向溶液中提供水溶性阴离子表面活性剂,并进一步提供具有高于导致形成酶/表面活性剂沉淀物的pH的溶液。 本申请进一步涉及含有阴离子表面活性剂并且其中含有的酶浓度高于不存在表面活性剂时可能的酶浓度的水溶液。