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    Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof
    1.
    发明授权
    Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof 有权
    多硫醇化合物的制造方法，光学材料的聚合性组合物及其用途

    公开(公告)号：US09181180B2

    公开(公告)日：2015-11-10

    申请号：US14405248

    申请日：2013-02-28

    申请人： MITSUI CHEMICALS, INC.

    发明人： Masaru Kawaguchi ,  Takeshi Nishimura

    IPC分类号： C07C319/14 ,  C07C319/08 ,  C07C319/20 ,  G02B1/04 ,  C08G18/38 ,  C07C335/32 ,  C07C381/00

    CPC分类号： C08G18/3876 ,  C07C319/08 ,  C07C319/14 ,  C07C319/20 ,  C07C335/32 ,  C07C381/00 ,  C08G18/7642 ,  G02B1/041 ,  C08L75/04 ,  C08L81/00 ,  C07C323/12 ,  C07C321/14

    摘要： Provided is a method for producing a polythiol compound, comprising: a step for reacting a polyalcohol compound represented by defined formula (4) with thiourea in the presence of hydrogen chloride to obtain an isothiuronium salt; a step for adding, while maintaining a reaction solution containing the isothiuronium salt thus obtained at a temperature of 20° C. to 60° C., aqueous ammonia to the reaction solution within 80 minutes, thereby hydrolyzing the isothiuronium salt to obtain a polythiol compound containing, as a main component, one kind or two or more kinds selected from the group consisting of compounds represented by defined formulae (6) to (8); and a step for adding hydrochloric acid which is a concentration of 30% to 36% to the solution containing the polythiol compound thus obtained, washing the solution at a temperature of 30° C. to 55° C. to purify the polythiol compound.

    摘要翻译： 本发明提供多硫醇化合物的制造方法，其特征在于，在氯化氢存在下，使由式（4）表示的多元醇化合物与硫脲反应，得到异硫脲鎓盐; 将在20℃〜60℃的温度下将含有异硫脲鎓盐的反应溶液保持在反应溶液中80分钟内，同时将异硫脲鎓盐水解，得到多硫醇化合物 含有选自由式（6）至（8）表示的化合物组成的组中的一种或两种以上的主要成分; 向含有所述多硫醇化合物的溶液中加入浓度为30％〜36％的盐酸的步骤，在30℃〜55℃的温度下洗涤，纯化多硫醇化合物。

    Method for Manufacturing Methylmercaptopropionaldehyde and Methionine Using Renewable Raw Materials
    3.
    发明申请
    Method for Manufacturing Methylmercaptopropionaldehyde and Methionine Using Renewable Raw Materials 有权
    使用可再生原料制造甲基巯基丙醛和甲硫氨酸的方法

    公开(公告)号：US20110229626A1

    公开(公告)日：2011-09-22

    申请号：US13128927

    申请日：2009-11-19

    申请人： Jean-Francois Devaux ,  Jean-Luc Dubois

    发明人： Jean-Francois Devaux ,  Jean-Luc Dubois

    IPC分类号： A23K1/16 ,  C07C319/14 ,  C07C323/22 ,  C07C323/58 ,  A23K1/18

    CPC分类号： C07C319/18 ,  A23K20/142 ,  A23K50/75 ,  C07C45/52 ,  C07C319/02 ,  C07C319/08 ,  C07C319/20 ,  C07C47/22 ,  C07C323/22 ,  C07C323/58 ,  C07C323/60 ,  C07C323/52 ,  C07C321/04

    摘要： The present invention relates to a method for manufacturing methylmercaptopropionaldehyde (MMP) including at least the following steps: (a) dehydrating glycerol to acrolein from an aqueous solution of glycerol in the presence of an acid catalyst; (b) purifying the aqueous flux from step (a) to obtain a flux of acrolein containing at least 15 wt % of water relative to the acrolein; (c) causing a reaction of the acrolein flux obtained in step (b) with methylmercaptan in the presence of a catalyst; (d) optionally purifying the product obtained in step (c). The method of the invention can also include a reaction of the product obtained in step (c) or (d) with hydrocyanic acid, or sodium cyanide during a step (e) followed by a subsequent transformation to produce methionine or methionine hydroxyanalogue, which can then optionally be purified. The additional use of methylmercaptan and/or hydrocyanic acid derived from biomass as raw materials in the method according to the invention makes it possible to obtain MMP, methionine or methionine hydroxyanalogue made up of 100% organic carbon from renewable sources.

    摘要翻译： 本发明涉及至少包括以下步骤的甲基巯基丙醛（MMP）的制备方法：（a）在酸催化剂存在下，将甘油从甘油水溶液中脱水至丙烯醛; （b）纯化来自步骤（a）的水性助熔剂以获得相对于丙烯醛含有至少15重量％的水的丙烯醛流量; （c）在催化剂存在下使步骤（b）中得到的丙烯醛助熔剂与甲基硫醇反应; （d）任选地纯化步骤（c）中获得的产物。 本发明的方法还可以包括步骤（c）或（d）中获得的产物与氢氰酸或氰化钠在步骤（e）中的反应，随后进行转化以产生甲硫氨酸或甲硫氨酸羟基对脯氨酸，其可以 然后任选地被纯化。 在根据本发明的方法中，以生物质为原料的甲基硫醇和/或氢氰酸的额外用途使得可以获得由可再生来源的100％有机碳组成的MMP，甲硫氨酸或甲硫氨酸羟基对映体。

    Process for preparing alkyl mercaptans in a multizone fixed bed reactor
    4.
    发明授权
    Process for preparing alkyl mercaptans in a multizone fixed bed reactor 有权
    在多区域固定床反应器中制备烷基硫醇的方法

    公开(公告)号：US07582800B2

    公开(公告)日：2009-09-01

    申请号：US11827154

    申请日：2007-07-11

    申请人： Hubert Redlingshoefer ,  Christoph Weckbecker

    发明人： Hubert Redlingshoefer ,  Christoph Weckbecker

    IPC分类号： C07C319/00

    CPC分类号： C07C319/08 ,  C07C321/04

    摘要： The invention relates to a process for preparing alkyl mercaptans by catalytic gas phase reaction of alkanols and hydrogen sulphide over alkali metal tungstates, the reaction being performed in at least two successive reaction zones which contain catalysts of different activity and selectivity.

    摘要翻译： 本发明涉及通过链烷醇和硫化氢与碱金属钨酸盐的催化气相反应制备烷基硫醇的方法，该反应在含有不同活性和选择性的催化剂的至少两个连续反应区中进行。

    Process for making dl-s-benzyl-n-acetyl cysteine
    10.
    发明授权
    Process for making dl-s-benzyl-n-acetyl cysteine 失效
    制备DL-S-苄基-N-乙酰基CYSTEINE的方法

    公开(公告)号：US3798263A

    公开(公告)日：1974-03-19

    申请号：US3798263D

    申请日：1969-06-10

    申请人： RAMBACHER P ,  MAKE S

    发明人： MAKE S ,  RAMBACHER P

    IPC分类号： C07C323/59 ,  C07C67/00 ,  C07C313/00 ,  E01C23/10 ,  F25D23/00 ,  F25D23/02 ,  C07C149/42

    CPC分类号： C07C319/24 ,  C07C319/08 ,  E01C23/10 ,  C07C323/52

    摘要： THE APPLICATION DISCLOSES A PROCESS FOR MAKING RACEMIC CYSTEIN, INACTIVE CYSTINE AND DL - S - BENZYL-N-ACETYL CYSTEINE BY REACTING SERINE AND ACETIC ANHYDRIDE IN THE PRESENCE OF A THIOACID, SUCH AS THIOACETIC ACID, OR IN THE PRESENCE OF THIOUREA, WHEREBY THE THIO-COMPOUND IS ATTACHED TO THE AZLACTOME OF ACETAMINO ACRYLIC ACID IN SATU NASCENDI. THE ATTACHMENT PRODUCT IS THEN HYDROLYZED BY AN ALKALINE OR ACID HYDROLYZING AGENT, OR BY BOTH SUCCESSIVELY, THEREBY FORMING RACEMIC CYSTEINE. THIS PRODUCT MAY BE USED AS SUCH, OR IT MAY BE OXIDIZED TO FORM INACTIVE CYSTINE, OR IT MAY BE BENZYLATED AND ACETYLATED TO FORM DL-S-BENZYL-N-ACETYL-CYSTEINE.