PROCESS FOR THE EPOXIDATION OF PROPENE
    4.
    发明申请

    公开(公告)号:US20180134676A1

    公开(公告)日:2018-05-17

    申请号:US15570167

    申请日:2016-04-19

    摘要: In a process for the epoxidation of propene, comprising the steps: reacting propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent; separating non-reacted propene and propene oxide from the resulting reaction mixture to provide a solvent mixture comprising methanol and water in a combined amount of at least 90% by weight; and feeding this solvent mixture as a feed stream to a continuously operated methanol distillation column at a feed point in the middle section of said column to provide an overhead product comprising at least 90% by weight methanol and a bottoms product comprising at least 90% by weight water; the addition of a liquid defoamer, having a solubility in the feed stream of less than 10 mg/kg at 25° C. and a surface tension at the liquid air interface of less than 22 mN/m at 20° C., at or above the feed point in an amount exceeding the solubility of the liquid defoamer in the feed stream suppresses foam formation in the methanol distillation column.

    Epoxidized fatty acid alkyl ester plasticizers and methods for making epoxidized fatty acid alkyl ester plasticizers
    10.
    发明授权
    Epoxidized fatty acid alkyl ester plasticizers and methods for making epoxidized fatty acid alkyl ester plasticizers 有权
    环氧化脂肪酸烷基酯增塑剂和制备环氧化脂肪酸烷基酯增塑剂的方法

    公开(公告)号:US09499681B2

    公开(公告)日:2016-11-22

    申请号:US14429112

    申请日:2012-11-12

    摘要: Epoxidized fatty acid alkyl esters and methods for making epoxidized fatty acid alkyl esters. Such epoxidized fatty acid alkyl esters can be prepared by epoxidizing fatty acid alkyl esters with an acid and a peroxide. Epoxidation can be performed under controlled reaction conditions to provide epoxidized fatty acid alkyl esters having an iodine value in the range of from 4 to 15 g I2/100 g of epoxidized fatty acid alkyl esters. Epoxidized fatty acid alkyl esters can be employed in plasticizer compositions, either alone or in combination with other plasticizers, such as epoxidized natural oils. Such plasticizers in turn may be used in the formation of polymeric compositions.

    摘要翻译: 环氧化脂肪酸烷基酯和制备环氧化脂肪酸烷基酯的方法。 这种环氧化脂肪酸烷基酯可以通过用酸和过氧化物环氧化脂肪酸烷基酯来制备。 环氧化可以在受控的反应条件下进行,以提供碘值在4至15g I2 / 100g环氧化脂肪酸烷基酯的环氧化脂肪酸烷基酯。 环氧化脂肪酸烷基酯可以单独使用或与其它增塑剂如环氧化天然油组合使用在增塑剂组合物中。 这种增塑剂又可用于形成聚合物组合物。