Method for thermal stabilization of highly concentrated formaldehyde solutions
    41.
    发明授权
    Method for thermal stabilization of highly concentrated formaldehyde solutions 失效
    高度浓缩的甲醛溶液的热稳定化方法

    公开(公告)号:US07273955B2

    公开(公告)日:2007-09-25

    申请号:US10547857

    申请日:2004-03-04

    CPC classification number: C07C45/78 C07C45/82 C07C47/04

    Abstract: Method of stabilizing high-concentration formaldehyde solutions having a CH2O content of >70% by weight against precipitation of solids, which comprises heating the high-concentration formaldehyde solution at a heating rate of at least 5° C./min to a temperature of from 80° C. to 200° C. immediately after it has been prepared and storing it at a temperature in this range.

    Abstract translation: 稳定CH 2 O 2含量> 70重量%的高浓度甲醛溶液与固体沉淀物的方法,其包括以至少5℃的加热速率加热高浓度甲醛溶液 在制备它并立即将其储存在该范围内的温度之后,将其加热至80℃至200℃的温度。

    Process for making intermediates for fragrance components from α-campholenic aldehyde
    42.
    发明授权
    Process for making intermediates for fragrance components from α-campholenic aldehyde 失效
    从α-樟脑醛制备香料成分的中间体的方法

    公开(公告)号:US07262329B1

    公开(公告)日:2007-08-28

    申请号:US11604431

    申请日:2006-11-27

    Abstract: A two-step aldol condensation process is disclosed. α-Campholenic aldehyde (ACA) and methyl ethyl ketone (MEK) react in the presence of a base under conditions effective to produce a mixture comprising a high yield of ketol condensation products. Dehydration of the ketols in the presence of an organic sulfonic acid provides unsaturated ketones that are valuable intermediates for fragrance components for synthetic sandalwood products. Compared with the usual one-step, base-catalyzed approach, the two-step process increases the yield of all condensation products and maximizes production of the most valuable ketone isomers.

    Abstract translation: 公开了两步醛醇缩合方法。 α-烷基醛(ACA)和甲基乙基酮(MEK)在碱的存在下在有效产生包含高产量的酮缩醇产物的混合物的条件下反应。 在存在有机磺酸的情况下,酮基的脱水提供不饱和酮,其是用于合成檀香产品的香料组分的有价值的中间体。 与通常的一步,碱催化方法相比,两步法提高了所有缩合产物的产率,并最大限度地提高了最有价值的酮异构体的生产。

    Process for preparing TCD-monenal
    43.
    发明授权
    Process for preparing TCD-monenal 失效
    制备TCD- monenal的方法

    公开(公告)号:US07122706B2

    公开(公告)日:2006-10-17

    申请号:US10968760

    申请日:2004-10-19

    CPC classification number: C07C47/445 C07C45/50 C07C45/82

    Abstract: A process for selectively hydroformylating dicyclopentadiene to 8(9)-formyltricyclo-[5.2.1.02,6]dec-3-ene in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus(III) compounds in complex-bound form, of group VIII of the Periodic Table of the Elements, wherein the water-soluble organic phosphorus(III) compounds are alkali metal or alkaline earth metal salts of sulfonated arylphosphines and aryldiphosphines.

    Abstract translation: 使用含水的过渡金属化合物的水溶液在非均相反应体系中选择性地将二环戊二烯加氢甲酰化为8(9) - 甲酰基三环[5.2.1.0 2,6]癸-3-烯的方法 其中水溶性有机磷(III)化合物是磺化芳基膦和芳基二膦的碱金属或碱土金属盐,它们是复合结合形式的元素周期表第Ⅷ族的可溶性有机磷(III)化合物。

    Method for the preparation of highly concentrated formaldehyde solutions
    44.
    发明申请
    Method for the preparation of highly concentrated formaldehyde solutions 失效
    制备高浓度甲醛溶液的方法

    公开(公告)号:US20060211841A1

    公开(公告)日:2006-09-21

    申请号:US10547732

    申请日:2004-03-04

    CPC classification number: C07C45/002 C07C45/82 C07C47/04

    Abstract: Process for preparing high-concentration formaldehyde solutions having a CH2O content of ≧50% by weight from an aqueous formaldehyde solution having a lower CH2O content by evaporation of part of this solution (partial evaporation), in which the aqueous formaldehyde solution is heated to an evaporation temperature T at which the gas phase becomes enriched in water relative to the liquid phase and the gas phase formed is taken off continuously or discontinuously, wherein the evaporation temperature T obeys the relationship: T[° C.]

    Abstract translation: 通过蒸发具有较低CH 2 O 2含量的甲醛水溶液制备CH 2 O 2含量> 50重量%的高浓度甲醛溶液的方法 该部分溶液(部分蒸发),其中甲醛水溶液被加热到气相相对于液相富集水的蒸发温度T,形成的气相连续或不连续地取出,其中 蒸发温度T遵循以下关系:<?in-line-formula description =“In-line Formulas”end =“lead”?> T [°C。] <°C] (c)= A + Bx(c / 100)+ Cx(c / 100) ) 2 + Dx(c / 100)3和A = + 68.759,B = + 124.77,C = -12.851,D = -10.095,其中c是瞬时 蒸发期间甲醛水溶液的CH 2 O 2 O含量为重量百分比,为20〜99% ht。

    Production of 3-alkylcycloalkanols
    47.
    发明授权
    Production of 3-alkylcycloalkanols 有权
    3-烷基环烷醇的生产

    公开(公告)号:US06900359B2

    公开(公告)日:2005-05-31

    申请号:US10344531

    申请日:2001-08-10

    Abstract: A method of making a 3-alkylcycloalkanol of formula 2: where R1 represents a methyl or ethyl group, R2 represents hydrogen, R3 represents an ethyl, propyl, butyl, isobutyl or isoamyl group, R4 represents hydrogen and R5 represents hydrogen, or a methyl, ethyl, propyl, isobutyl or isoamyl group comprises the following steps: (1) carrying out an electrophilic substitution reaction of an alkyl group or precursor thereof, on an ortho-substituted alkylbenzene compound of formula 3: where R6 represents hydrogen, or a methyl or ethyl group; (2) hydrogenating the reaction product of step (1); (3) performing an elimination reaction on one or more reaction products of step (2) to produce one or more alkene products; and (4) hydrating the one or more alkene products of step (3) to provide a 3-alkylcycloalkanol of formula 2. The electrophilic substitution reaction of step (1) may be a Friedel-Crafts acylation, e.g. using an isopropyl ketone precursor, or a Friedel-Crafts alkylation, e.g. using an isobutyl group. The 3-alkylcycloalkanols, especially 3-(2-methylpropyl)-1-methylcyclohexanol, are useful fragrance materials and find use in perfumes and perfumed products.

    Abstract translation: 制备式2的3-烷基环烷醇的方法:其中R 1表示甲基或乙基,R 2表示氢,R 3, 代表乙基,丙基,丁基,异丁基或异戊基,R 4表示氢,R 5表示氢,或甲基,乙基,丙基,异丁基或异戊基包括 以下步骤:(1)在式3的邻位取代的烷基苯化合物上进行烷基或其前体的亲电取代反应:其中R 6表示氢,或甲基或乙基 组; (2)氢化步骤(1)的反应产物; (3)对步骤(2)的一种或多种反应产物进行消除反应以产生一种或多种烯烃产物; (4)将步骤(3)的一种或多种烯烃产物水合以提供式2的3-烷基环烷醇。步骤(1)的亲电取代反应可以是Friedel-Crafts酰化反应,例如。 使用异丙基酮前体,或Friedel-Crafts烷基化,例如。 使用异丁基。 3-烷基环烷醇,特别是3-(2-甲基丙基)-1-甲基环己醇是有用的香料,可用于香料和香料产品中。

    Method for the purification of acrolein
    48.
    发明申请
    Method for the purification of acrolein 有权
    丙烯醛纯化方法

    公开(公告)号:US20050103616A1

    公开(公告)日:2005-05-19

    申请号:US10500715

    申请日:2003-02-12

    Applicant: Georges Gros

    Inventor: Georges Gros

    Abstract: The invention relates to a continuous method for the purification of acrolein, wherein: an aqueous acrolein solution is supplied, devoid of gas which is difficult to condense, in a distillation column fitted with at least one boiler at the base thereof and with at least one condenser at the head thereof; a mixture which essentially contains water is drawn off at the base of the distillation column; a mixture which essentially contains acrolein and water is drawn off at the head of the distillation column; the mixture drawn off from the head of the distillation column is cooled in the condenser to a temperature enabling an aqueous condensate to be obtained, in addition to a substantial amount of a gaseous mixture which is rich in acrolein; the purified acrolein is isolated in the gaseous mixture which is rich in acrolein.

    Abstract translation: 本发明涉及一种用于纯化丙烯醛的连续方法,其中:在装有至少一个锅炉的蒸馏塔中提供丙烯醛水溶液,该溶液难以冷凝,并且至少含有一种 头部冷凝器; 基本上含有水的混合物在蒸馏塔的底部排出; 基本含有丙烯醛和水的混合物在蒸馏塔的顶部排出; 从蒸馏塔头部排出的混合物除了大量富含丙烯醛的气态混合物之外,在冷凝器中冷却至能够获得含水冷凝物的温度; 在富含丙烯醛的气体混合物中分离纯化的丙烯醛。

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