Method for the production of tetrahydrofuran copolymers
    51.
    发明申请
    Method for the production of tetrahydrofuran copolymers 审中-公开
    生产四氢呋喃共聚物的方法

    公开(公告)号:US20060264679A1

    公开(公告)日:2006-11-23

    申请号:US10551142

    申请日:2004-03-30

    IPC分类号: C07C41/03

    摘要: The present invention relates to a process for the single-stage preparation of polyoxyalkylene glycols by copolymerization of THF and neopentyl glycol in the presence of a heteropolyacid, wherein the total amount of all impurities of the formula (I) where R1 and R2 are each hydrogen when R3 is an oxyformyl or isopropionate radical, R1 is hydrogen and R2 is hydroxy when R3 is an isopropyl radical and R1 is hydrogen when R2 and R3 together form an —OCH2—C(CH3)—CH2— radical, in the neopentyl glycol is less than 1000 ppm.

    摘要翻译: 本发明涉及通过THF和新戊二醇在杂多酸的存在下共聚制备聚氧亚烷基二醇的方法,其中式(I)的所有杂质的总量,其中R 1, R 2和R 2各自为氢,当R 3为氧甲酰基或异丙酸基团时,R 1为氢,R 2为氢, 当R 3是异丙基时,R 2是羟基,当R 2和R 3独立地是R 1时,R 1是氢, 一起形成-OCH 2 -C(CH 3 CH 3)-CH 2 - 基,在新戊二醇中小于1000ppm 。

    Method of producing tetrahydrofuran copolymers
    52.
    发明申请
    Method of producing tetrahydrofuran copolymers 失效
    生产四氢呋喃共聚物的方法

    公开(公告)号:US20060258837A1

    公开(公告)日:2006-11-16

    申请号:US10551137

    申请日:2004-03-30

    IPC分类号: C08G59/00

    CPC分类号: C08G65/2666 C08G65/20

    摘要: The present invention relates to a process for the single-stage preparation of polyoxyalkylene glycols by copolymerization of THF and alpha, omega-diols in the presence of a heteropolyacid, wherein the content of organically bound nitrogen in the alpha, omega-diol is less than 15 ppm.

    摘要翻译: 本发明涉及通过THF和α,ω-二醇在杂多酸的存在下共聚制备聚氧亚烷基二醇的方法,其中α,ω-二醇中的有机结合的氮的含量小于 15 ppm。

    METHOD FOR PRODUCING TETRAHYDROFURANE COPOLYMERS
    54.
    发明申请
    METHOD FOR PRODUCING TETRAHYDROFURANE COPOLYMERS 失效
    生产四氢呋喃共聚物的方法

    公开(公告)号:US20060167321A1

    公开(公告)日:2006-07-27

    申请号:US10524555

    申请日:2003-07-30

    IPC分类号: C07C41/01

    CPC分类号: C08G65/20

    摘要: The present invention provides a process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha,omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization.

    摘要翻译: 本发明提供了通过在杂多酸和烃的存在下共聚合四氢呋喃和α,ω-二醇来一步法制备聚氧亚烷基二醇的方法,该方法包括在共聚合中将与该烃的混合物中的水蒸馏出来。

    Method for the production of tetrahydrofuran copolymers

    公开(公告)号:US20060052550A1

    公开(公告)日:2006-03-09

    申请号:US10537962

    申请日:2003-12-16

    IPC分类号: C08G59/14

    CPC分类号: C08G65/20 C08G65/2666

    摘要: The present invention provides a process for preparing polyoxyalkylene glycols of a certain molecular weight in one stage by copolymerizing tetrahydrofuran and alpha,omega-diols as the comonomer in the presence of a heteropolyacid and of a hydrocarbon, by distilling off a mixture of water and this hydrocarbon from the copolymerization, which comprises terminating the polymerization when this molecular weight is attained by adding water, comonomer, butanediol or butanediol-water mixtures.

    Method for producing 2-cyclododecyl-1-propanol
    58.
    发明授权
    Method for producing 2-cyclododecyl-1-propanol 失效
    2-环十二烷基-1-丙醇的制备方法

    公开(公告)号:US06303836B1

    公开(公告)日:2001-10-16

    申请号:US09424258

    申请日:1999-12-01

    IPC分类号: C07C3520

    摘要: 2-Cyclododecyl-propanol [sic], which is in demand as musk scent, is prepared in an advantageous industrial process by reacting cyclododecene with an excess of propionic acid or of a propionic acid derivative in the presence of catalytic amounts of a free-radical initiator, and subsequently catalytically hydrogenating the 2-cyclododecylpropionic acid which is formed or the corresponding 2-cyclododecylpropionic acid derivatives.

    摘要翻译: 在有利的工业过程中,通过使环十二烯与过量的丙酸或丙酸衍生物在催化量的自由基存在下反应制备作为麝香香味的2-环十二烷基 - 丙醇[sic] 引发剂,随后催化氢化形成的2-环十二烷基丙酸或相应的2-环十二烷基丙酸衍生物。

    Method for hydrogenating benzene polycarboxylic acids or derivatives thereof by using a catalyst containing macropores

    公开(公告)号:US06284917B1

    公开(公告)日:2001-09-04

    申请号:US09581843

    申请日:2000-06-19

    IPC分类号: C07C6974

    摘要: A process for hydrogenating a benzenepolycarboxylic acid or a derivative thereof or a mixture of two or more thereof by bringing the benzenepolycarboxylic acid or the derivative thereof or the mixture of two or more thereof into contact with a hydrogen-containing gas is carried out in the presence of a catalyst which comprises as active metal at least one metal of transition group VIII of the Periodic Table alone or together with at least one metal of transition group I or VII of the periodic table applied to a support which contains macropores with the proviso that if dimethyl terephthalate is hydrogenated, the hydrogenation using a catalyst which comprises as active metal ruthenium either alone or together with at least one metal of transition group I, VII or VIII of the Periodic Table applied to a support, where the support has a mean pore diameter of at least 50 nm and a BET surface area of at most 30 m2/g and the amount of the active metal is from 0.01 to 30% by weight, based on the total weight of the catalyst, and the ratio of the surface areas of the active metal and the catalyst support is less than 0.05, and/or a catalyst which comprises as active metal ruthenium either alone or together with at least one metal of transition group I, VII or VIII of the Periodic Table in an amount of from 0.01 to 30% by weight, based on the total weight of the catalyst, applied to a support, where from 10 to 50% of the pore volume of the support is formed by macropores having a pore diameter in the range from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support is formed by mesopores having a pore diameter in the range from 2 to 50 nm, where the sum of the pore volumes adds up to 100%, is excluded, and novel hydrogenation products, obtainable by hydrogenating benzenepolycarboxylic acid (derivatives) as well as their use as plasticizers in plastics.