Process for the branching of saturated and/or unsaturated fatty acids and/or alkyl esters thereof
    1.
    发明授权
    Process for the branching of saturated and/or unsaturated fatty acids and/or alkyl esters thereof 有权
    饱和和/或不饱和脂肪酸和/或其烷基酯的支化方法

    公开(公告)号:US06455716B2

    公开(公告)日:2002-09-24

    申请号:US09798600

    申请日:2001-03-02

    IPC分类号: C07C5100

    摘要: A process for the branching of saturated and/or unsaturated fatty acids and/or alkyl esters thereof comprises subjecting the fatty acids and/or alkyl esters to a skeletal isomerization reaction using a catalyst comprising a crystalline porous structure having incorporated therein a metal to form metal sites on said catalyst and isolating branched fatty acids, alkyl esters thereof, or mixtures thereof, from a reaction mixture obtained by said skeletal isomerization reaction. The catalyst used in the isomerization reaction is preferably a zeolite catalyst containing metal sites of a Group VIII metal. The process produces a mixture of fatty acids and/or alkyl esters that contain significant quantities of branched molecules.

    摘要翻译: 饱和和/或不饱和脂肪酸和/或其烷基酯的支化方法包括使用包含结合有金属的结晶多孔结构的催化剂对脂肪酸和/或烷基酯进行骨架异构化反应以形成金属 从所述骨架异构化反应获得的反应混合物中分离所述催化剂上的位点并分离支链脂肪酸,其烷基酯或其混合物。 异构化反应中使用的催化剂优选为含有VIII族金属的金属部位的沸石催化剂。 该方法产生含有大量支链分子的脂肪酸和/或烷基酯的混合物。

    Lower alkyl ester recycling in polyol fatty acid polyester synthesis
    3.
    发明授权
    Lower alkyl ester recycling in polyol fatty acid polyester synthesis 失效
    多元醇脂肪酸聚酯合成中的低级烷基酯回收

    公开(公告)号:US06465642B1

    公开(公告)日:2002-10-15

    申请号:US08797018

    申请日:1997-02-07

    IPC分类号: C07H1302

    CPC分类号: C07H13/06 C07H3/06 Y02P20/582

    摘要: Process for synthesizing polyol fatty acid polyesters which includes the steps of reacting an excess of lower alkyl ester with polyol to esterify hydroxyl groups thereof and form polyol fatty acid polyester, separating at least a portion of the unreacted lower alkyl ester from the polyol fatty acid polyester, and recycling the separated unreacted lower alkyl ester for further reaction with polyol or partially esterified polyol. The recycled lower alkyl ester is substantially free of lower alkyl ester degradation reaction products, such as carbonyls and free fatty acids.

    摘要翻译: 用于合成多元醇脂肪酸聚酯的方法,其包括使过量的低级烷基酯与多元醇反应以酯化其羟基并形成多元醇脂肪酸聚酯的步骤,从多元醇脂肪酸聚酯中分离出至少一部分未反应的低级烷基酯 并且将分离的未反应的低级烷基酯再循环以与多元醇或部分酯化的多元醇进一步反应。 回收的低级烷基酯基本上不含低级烷基酯降解反应产物,如羰基和游离脂肪酸。

    Synthesis of polyol fatty acid polyesters using column with inert gas
stripping
    4.
    发明授权
    Synthesis of polyol fatty acid polyesters using column with inert gas stripping 失效
    使用惰性气体剥离柱合成多元醇脂肪酸聚酯

    公开(公告)号:US5945529A

    公开(公告)日:1999-08-31

    申请号:US683899

    申请日:1996-07-19

    IPC分类号: C07H13/06 C07C67/03

    CPC分类号: C07H13/06

    摘要: Processes for the synthesis of polyol fatty acid polyester by transesterification of a polyol comprise reacting polyol with a first portion of fatty acid lower alkyl ester to provide a first step reaction product in which substantially all of the polyol is reacted with at least one fatty acid lower alkyl ester. The processes then employ a multistage column providing substantial plug flow of liquid therein for further transesterification of the first step reaction product. Partially esterified polyol, a second portion of fatty acid lower alkyl ester and catalyst are fed to the column to form a mixture and cause further transesterification of the partially esterified polyol and fatty acid lower alkyl ester, with lower alkyl alcohol being formed as a by product. The resulting liquid mixture of reactants and product is passed in a first direction between adjacent stages through the column for further reaction of partially esterified polyol with fatty acid lower alkyl ester. An inert stripping or sparging gas is fed through the column in a second direction between adjacent stages, counter current to the flow of the liquid mixture between adjacent stages in the first direction, with radial shear agitation. The lower alkyl alcohol by-product of the polyol-fatty acid lower alkyl ester reaction is transferred from the liquid mixture to the inert gas.

    摘要翻译: 通过多元醇酯交换合成多元醇脂肪酸聚酯的方法包括使多元醇与脂肪酸低级烷基酯的第一部分反应,以提供第一步反应产物,其中基本上所有的多元醇与至少一种脂肪酸较低 烷基酯。 然后,该方法使用多级柱,其中提供液体的大量活塞流,用于第一步反应产物的进一步酯交换。 将部分酯化的多元醇,第二部分的脂肪酸低级烷基酯和催化剂加入到塔中以形成混合物,并使部分酯化的多元醇和脂肪酸低级烷基酯进一步酯交换反应,形成低级烷基醇作为副产物 。 所得到的反应物和产物的液体混合物在相邻级之间的第一方向通过柱,用于部分酯化的多元醇与脂肪酸低级烷基酯的进一步反应。 惰性汽提或喷射气体在相邻级之间的第二方向通过柱体进料,与径向剪切搅拌相反,在相邻级之间的液体混合物流在第一方向上。 多元醇 - 脂肪酸低级烷基酯反应的低级烷基醇副产物从液体混合物转移到惰性气体中。

    Process for making high purity fatty acid lower alkyl esters
    5.
    发明授权
    Process for making high purity fatty acid lower alkyl esters 失效
    制备高纯度脂肪酸低级烷基酯的方法

    公开(公告)号:US06965043B1

    公开(公告)日:2005-11-15

    申请号:US09554211

    申请日:1998-11-02

    摘要: Processes for the synthesis of high purity fatty acid lower alkyl esters comprise the steps of: (a) converting a fatty acid source to a product mixture comprising lower alkyl esters and by-products; (b) water-washing the product mixture at elevated temperature and elevated pressure to remove by-products; and (c) fractionally distilling the water-washed product mixture to obtain high purity fatty acid lower alkyl esters. At least a portion of the fatty acids have from about 20 to about 24 carbon atoms. The high purity lower alkyl esters have an acid value no greater than about 1.0.

    摘要翻译: 用于合成高纯度脂肪酸低级烷基酯的方法包括以下步骤:(a)将脂肪酸源转化成包含低级烷基酯和副产物的产物混合物; (b)在高温和高压下水洗产品混合物以除去副产物; 和(c)分级蒸馏水洗产物混合物以获得高纯度脂肪酸低级烷基酯。 至少一部分脂肪酸具有约20至约24个碳原子。 高纯度低级烷基酯的酸值不大于约1.0。