中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.009 seconds)

    A process for producing {60 -amino acids
    1.
    发明授权
    A process for producing {60 -amino acids 失效
    一种生产{60-氨基酸的方法

    公开(公告)号：US3668221A

    公开(公告)日：1972-06-06

    申请号：US3668221D

    申请日：1967-07-21

    Applicant: SUMITOMO CHEMICAL CO

    Inventor： SHIMA TAKESABURO ,  YAMAGISHI AKIO ,  SADA MASAO ,  YAMAMOTO ZENICHI ,  SHIOZAKI HASUNAGA

    IPC: C07C20060101 ,  C07D233/72 ,  C07D27/60 ,  C07C99/08

    Abstract: A process for producing Alpha -amino acid by hydrolyzing a hydantoin compound in which the hydrolysis is effected while withdrawing out of the system ammonia and carbon dioxide generated during the hydrolysis and while during the reaction period, adjusting the amount of reaction medium to at least 1.5 l. per mole of the hydantoin compound initially employed. Particularly, a process in which the hydrolysis is effected in such a manner that an aqueous alkaline solution of hydantoin compound is fed to the upper part of a plate column-type reactor or packed column-type reactor and, simultaneously, steam is fed from the lower part of said reactor, while withdrawing ammonia and carbon dioxide out of the system. By thus effecting the hydrolysis without concentrating the reaction liquid, and while withdrawing the generated gases out of the system, Alpha -amino acid can be produced in high yields.

    Abstract translation: 通过水解产生水解的乙内酰脲化合物生产α-氨基酸的方法，同时在水解过程中产生的氨和二氧化碳排出系统，同时在反应期间将反应介质的量调节至至少1.5 l。 每摩尔最初使用的乙内酰脲化合物。 特别是，水解是以乙内酰脲化合物的碱性水溶液进料到塔式反应器或填充柱式反应器的上部的方式进行水解的方法，同时从 同时将氨和二氧化碳从系统中排出。 通过在不浓缩反应液体的情况下进行水解，并且在将所产生的气体从系统中排出的同时，可以高产率生产α-氨基酸。

    Process for producing rubber-modified plastics
    3.
    发明授权
    Process for producing rubber-modified plastics 失效
    生产橡胶改性塑料的工艺

    公开(公告)号：US3914339A

    公开(公告)日：1975-10-21

    申请号：US38152273

    申请日：1973-07-23

    Applicant: SUMITOMO CHEMICAL CO

    Inventor： SHIMA TAKESABURO ,  SAKAMOTO SUKEHIKO ,  FUJII YOSHIKAZU

    IPC: C08F36/04 ,  C08F279/02 ,  C08F291/02 ,  C08L9/00 ,  C08L23/06 ,  C08L23/08 ,  C08L23/16

    CPC classification number: C08F36/04 ,  C08F279/02 ,  C08F291/02 ,  C08F212/08

    Abstract: A process for producing rubber-modified plastics excellent in impact strength and color rendering which comprises dissolving rubber into a mixture of acrylonitrile and styrene containing or not one or more of other vinyl monomers copolymerizable with them, subjecting the resultant solution to bulk polymerization under heating without using any polymerization initiator until the total conversion of the vinyl monomers reaches to a range of 3.5 to 15% by weight, adding a chain transfer agent to the resulting reaction mixture, continuing the bulk polymerization until the total conversion of the vinyl monomers reaches to a range of 20 to 40% by weight and subjecting the thus prepared prepolymer to suspension polymerization in the presence of lauroyl peroxide as a polymerization initiator.

    Abstract translation: 一种制造橡胶改性塑料的冲击强度和显色性优异的方法，其包括将橡胶溶解在丙烯腈和苯乙烯的混合物中，所述丙烯腈和苯乙烯含有或不含有一种或多种与其共聚的其它乙烯基单体的混合物，使所得溶液在加热下进行本体聚合而无需 使用任何聚合引发剂，直到乙烯基单体的总转化率达到3.5至15重量％的范围，向所得反应混合物中加入链转移剂，继续本体聚合，直到乙烯基单体的总转化率达到 范围为20至40重量％，并将如此制备的预聚物在作为聚合引发剂的过氧化月桂酰的存在下进行悬浮聚合。

    Process for producing methionine
    4.
    发明授权
    Process for producing methionine 失效
    生产甲硫氨酸的方法

    公开(公告)号：US3636098A

    公开(公告)日：1972-01-18

    申请号：US3636098D

    申请日：1967-06-29

    Applicant: SUMITOMO CHEMICAL CO

    Inventor： SHIMA TAKESABURO ,  YAMAGISHI AKIO ,  SADA MASAO ,  OSAKI BONJI ,  YAMAMOTO ZENICHI

    IPC: C07D233/76 ,  C07D307/54 ,  C07C101/04 ,  C07C149/20

    CPC classification number: C07D233/76 ,  C07D307/54

    Abstract: A PROCESS FOR PRODUCING A-AMINO ACID COMPRISING INTRODUCING A SYNTHESIS LIQUID OF A HYDANTOIN COMPOUND DIRECTLY INTO A HYDROLYSIS STEP TO EFFECT THE HYDROLYSIS OF SAID COMPOUND AND THEN CONCENTRATING THE RESULTING REACTION LIQUID AS WELL AS RECOVERING AMMONIA AND CARBON DIOXIDE TO RECYCLE THEM TO THE SYNTHESIS STEP OF THE HYDANTION COMPOUND. ACCORDING TO THIS PROCESS, NOT ONLY A-AMINO ACID CAN BE CONTINUOUSLY PRODUCED IN HIGH YIELDS BUT ALSO THE REACTION LIQUID CAN BE CONCENTRATION WITHOUT ACCOMPANYING THE DEGENERATION AND POLYMERIZATION OF A-AMINO ACID AND, MOREOVER, AMMONIA AND CARBON DIOXIDE CAN BE RECOVERED IN LARGE AMOUNTS AND CAN BE RE-USED.

Patent Agency Ranking