会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Method for producing alkyl-substituted butenols
    • 烷基取代丁烯醇的制备方法
    • US07169749B1
    • 2007-01-30
    • US10088385
    • 2000-09-08
    • Lothar FriesenhagenStephan HeckNorbert KleinThomas MarkertGerrit PelzerMarkus Schneider
    • Lothar FriesenhagenStephan HeckNorbert KleinThomas MarkertGerrit PelzerMarkus Schneider
    • C07C27/22
    • C07C45/74C07C29/141C07C2601/10C07C47/225C07C33/12
    • Alkyl-substituted butenols having the formula (I): R1—CH2—CH═CR2—CH2OH   (I) wherein R1 is a saturated or olefinically unsaturated alkyl or cycloalkyl group having from 4 to 16 carbon atoms and wherein R1 is optionally substituted by an alkyl, cycloalkyl, aryl or alkaryl having up to 12 carbon atoms; R2 is hydrogen or an alkyl group having from 1 to about 6 carbon atoms are produced by a process which comprises: (1) reacting an aldehyde of the formula (II): R1—CH2—CHO   (II) wherein R1 has the same meaning as in formula (I), with the corresponding lower aldehyde to form an unsaturated aldehyde in an inert organic solvent; (2) continuously contacting an optionally calcined copper/zinc catalyst with the unsaturated aldehyde under isothermal conditions at temperatures of from about 45 to about 60° C. and under a hydrogen pressure of from 1 to about 300 bar.
    • 具有式(I)的烷基取代的丁烯醇:<?in-line-formula description =“In-line formula”end =“lead”?> R SUB-CH-CR 2 -CH 2 OH(I)<βin-line-formula description =“In-line Formulas”end =“tail”?> 其中R 1是具有4至16个碳原子的饱和或烯属不饱和的烷基或环烷基,并且其中R 1任选被烷基,环烷基,芳基或烷芳基取代 具有多达12个碳原子; R 2是氢或具有1至约6个碳原子的烷基,其方法包括:(1)使式(II)的醛: 公式描述=“在线公式”end =“lead”?> R -CH 2 -CHO(II)<?in-line-formula description =“ 其中R 1具有与式(I)中相同的含义,其中相应的低级醛在惰性有机溶剂中形成不饱和醛; (2)在约45至约60℃的温度和1至约300巴的氢气压力的等温条件下,将任选煅烧的铜/锌催化剂与不饱和醛连续接触。
    • 10. 发明授权
    • Process for the production of fatty acid alkyl esters
    • 生产脂肪酸烷基酯的方法
    • US4652406A
    • 1987-03-24
    • US806074
    • 1985-12-06
    • Herbert LepperLothar Friesenhagen
    • Herbert LepperLothar Friesenhagen
    • C07C67/03C07C67/58C07C69/24C07C69/52C07C69/58C11C3/00C11C3/04C11C1/08
    • C11C3/003C11C3/04
    • Fatty acid alkyl esters are produced by catalytic transesterification of natural fats and oils containing free fatty acids. In a preliminary esterifying step, the free fatty acids present are reacted with a C.sub.1 -C.sub.4 alkanol (e.g., methanol) in the presence of an acidic esterification catalyst, at a temperature of about 50.degree. to 120.degree. C. and at substantially atmospheric pressure. The resulting reaction mixture is allowed to separate into two phases: (1) an alcohol phase containing the acidic esterification catalyst and part of the water of reaction and (2) an oil phase. These phases separately recovered. The oil phase is then extracted with an immiscible extractant, preferably comprising a mixture of glycerol and methanol, to remove residual water of reaction. In the final step the extracted oil phase is transesterified with a C.sub.1 -C.sub.4 alkanol, e.g. methanol, in the presence of an aklali catalyst and at substantially atmospheric pressure.
    • 脂肪酸烷基酯通过天然脂肪和含有游离脂肪酸的油的酯交换反应产生。 在预酯化步骤中,存在的游离脂肪酸在酸性酯化催化剂存在下,在约50-120℃和基本上大气压下与C 1 -C 4烷醇(例如甲醇)反应 。 将所得反应混合物分离成两相:(1)含有酸性酯化催化剂和部分反应水的醇相,和(2)油相。 这些阶段分别回收。 然后用不混溶的萃取剂萃取油相,优选包含甘油和甲醇的混合物,以除去残留的反应水。 在最后一步中,萃取的油相用C1-C4链烷醇酯交换反应。 甲醇,在碱性催化剂存在下并且在基本上大气压下进行。