PREPARATION OF ISOCYANATOSILANES
    1.
    发明申请

    公开(公告)号:US20210277035A1

    公开(公告)日:2021-09-09

    申请号:US17259268

    申请日:2019-07-02

    Abstract: There is provided herein a method and an apparatus for producing an isocyanatoorganosilane which method includes feeding a carbamatoorganosilane to a cracking device where it is thermally dissociated into a reaction product mixture comprising isocyanatoorganosilane, alcohol, and heavies, followed by separating the mixture in a distillation column of two parts and collecting the isocyanatoorganosilane from the distillation column via a side stream having a predetermined location between the top and bottom parts of the column; and wherein the distillation column is configured to have a ratio of the length of the bottom part of the distillation column to the length of the top part of the distillation column which is effective to provide a side stream having a high purity and high weight percent of isocyanatoorganosilane.

    CATALYST FOR SYNTHESIS OF SILOXANES
    3.
    发明申请
    CATALYST FOR SYNTHESIS OF SILOXANES 有权
    用于合成硅氧烷的催化剂

    公开(公告)号:US20160215097A1

    公开(公告)日:2016-07-28

    申请号:US14914864

    申请日:2014-08-18

    CPC classification number: C08G77/08 B01J31/0251 B01J2231/14

    Abstract: The present technology provides compositions, methods, and processes to form polysiloxanes. In one aspect, the present technology provides a process for the ring opening polymerization of a cyclosiloxane comprising contacting a cyclosiloxane with a bicyclic guanidine compound. The guanidine-containing compounds useful in the ring opening reaction include a fused ring structure comprising a guanidine functional group as part of the fused ring.

    Abstract translation: 本技术提供了形成聚硅氧烷的组合物,方法和方法。 一方面,本技术提供了环硅氧烷的开环聚合的方法,包括使环硅氧烷与双环胍化合物接触。 可用于开环反应的含胍化合物包括作为稠环的一部分的胍官能团的稠环结构。

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