Process for preparing raw materials for washing agents
    33.
    发明授权
    Process for preparing raw materials for washing agents 失效
    制备洗涤剂原料的方法

    公开(公告)号:US06191097B1

    公开(公告)日:2001-02-20

    申请号:US09380040

    申请日:1999-08-25

    IPC分类号: C11D1100

    CPC分类号: C11D11/0082 C11D17/06

    摘要: A process for producing solid detergent granular materials is presented involving (a) forming an aqueous surfactant paste of an anionic surfactant, an amphoteric surfactant or mixtures thereof, and (b) drying and granulating the aqueous paste in a horizontal thin-layer evaporator or dryer having rotating fittings, wherein the drying is carried out at a temperature of 120° C. to 130° C. The process produces granules having a bulk density greater than 600 grams/liter and a uniform particle size distribution.

    摘要翻译: 提出了一种生产固体洗涤剂颗粒材料的方法,其包括(a)形成阴离子表面活性剂,两性表面活性剂或其混合物的水性表面活性剂糊剂,和(b)在水平薄层蒸发器或干燥器中干燥和造粒水性糊剂 具有旋转配件,其中干燥在120℃至130℃的温度下进行。该方法产生堆积密度大于600克/升并且具有均匀的粒度分布的颗粒。

    Process for the production of dialkyl carbonates
    34.
    发明授权
    Process for the production of dialkyl carbonates 失效
    制备碳酸二烷基酯的方法

    公开(公告)号:US5986125A

    公开(公告)日:1999-11-16

    申请号:US11682

    申请日:1998-03-04

    CPC分类号: C07C68/06

    摘要: The invention relates to a process for the production of higher dialkyl carbonates corresponding to formula (I):(R.sup.1 O)(R.sup.2 O)CO (I)which R.sup.1 and R.sup.2 may be the same or different and represent a linear or branched, saturated or unsaturated and/or alkoxylated alkyl group, by transesterification of lower dialkyl carbonates with higher alcohols in the presence of a catalyst. The process is characterized in that the transesterification is carried out in a column equipped with packings or internals through which the reactants flow in countercurrent to one another. Predominantly symmetrical dialkyl carbonates are obtained.

    摘要翻译: PCT No.PCT / EP97 / 02891 Sec。 371日期:1998年3月4日 102(e)1998年3月4日PCT 1997年6月4日PCT公布。 公开号WO97 / 47583 日期:1997年12月18日本发明涉及一种制备相应于式(I):(R1O)(R2O)CO(Ⅰ)的较高级二烷基碳酸酯的方法,其中R 1和R 2可以相同或不同,表示直链或 支化的,饱和的或不饱和的和/或烷氧基化的烷基,通过低级碳酸二烷基酯与高级醇在催化剂存在下的酯交换反应。 该方法的特征在于酯交换在装备有填料或内部物质的塔中进行,反应物通过该填料或内部物质彼此逆流流动。 得到主要对称的碳酸二烷基酯。

    Recovery of tocopherols
    35.
    发明授权
    Recovery of tocopherols 失效
    恢复生育酚

    公开(公告)号:US5646311A

    公开(公告)日:1997-07-08

    申请号:US654483

    申请日:1996-05-28

    摘要: Starting from a mixture containing tocopherol, fats and/or fat derivatives, more particularly fatty acids, and optionally sterol and/or sterol derivatives, the free fatty acids present in the mixture are esterified with an alcohol. The mixture is then transesterified with an alcohol in the presence of a basic catalyst. After the transesterification, the excess lower alcohol is distilled off from the reaction mixture. The transesterification catalyst and the glycerol present, if any, are removed and the fatty acid alkyl ester is distilled off from the mixture. Distillation of fatty acid alkyl esters can be accomplished with a packed column in sequence with a wiped film evaporator. The simultaneous recovery of tocopherol and sterol is possible. Tocopherols and sterols can be separated by the crystallization of sterols from a blend of organic solvents.

    摘要翻译: 从含有生育酚,脂肪和/或脂肪衍生物,更特别是脂肪酸和任选的固醇和/或固醇衍生物的混合物开始,混合物中存在的游离脂肪酸被醇酯化。 然后将混合物在碱性催化剂存在下用醇酯交换。 酯交换后,从反应混合物中蒸馏出多余的低级醇。 酯交换催化剂和存在的甘油(如果有的话)被除去,并从混合物中蒸出脂肪酸烷基酯。 脂肪酸烷基酯的蒸馏可以用填充柱依次用擦膜蒸发器完成。 生育酚和甾醇的同时回收是可能的。 生育酚和甾醇可以通过固醇与有机溶剂的混合物的结晶分离。

    Process for heterogeneously catalyzed hydrogenation
    40.
    发明授权
    Process for heterogeneously catalyzed hydrogenation 失效
    非均相催化氢化方法

    公开(公告)号:US07741501B2

    公开(公告)日:2010-06-22

    申请号:US11670228

    申请日:2007-02-01

    IPC分类号: C07C51/36

    摘要: A process for carrying out heterogeneously catalyzed hydrogenation reactions in a fixed-bed reactor includes providing at least one main reactor containing a first amount of catalyst; providing a first auxiliary reactor and a second auxiliary reactor, each containing a second amount of catalyst, wherein the first amount of catalyst is relatively larger than the second amount of catalyst; passing a starting product of a fatty compound through the first auxiliary reactor and reacting the starting product with hydrogen in the presence of the catalyst; continuing the reaction through the at least one main reactor; and continuing the reaction through the second auxiliary reactor, wherein the first auxiliary reactor is reactivated. Another process provided includes a first and second main reactor, and a first and second auxiliary reactor, where relatively pure and impure starting products of a fatty compound are processed substantially continuously by cyclic switching of the reactors.

    摘要翻译: 在固定床反应器中进行非均相催化氢化反应的方法包括提供至少一个含有第一量催化剂的主反应器; 提供第一辅助反应器和第二辅助反应器,每个包含第二量的催化剂,其中第一量的催化剂相对大于第二量的催化剂; 使脂肪化合物的起始产物通过第一辅助反应器,并在催化剂存在下使起始产物与氢气反应; 通过所述至少一个主反应器继续反应; 并通过第二辅助反应器继续反应,其中第一辅助反应器被重新激活。 提供的另一方法包括第一和第二主反应器以及第一和第二辅助反应器,其中通过反应器的循环切换基本上连续地处理脂肪化合物的相对纯的和不纯的起始产物。