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    Method for isolating epsilon-caprolactam material
    2.
    发明授权
    Method for isolating epsilon-caprolactam material 失效
    分离ε-己内酰胺材料的方法

    公开(公告)号：US3925365A

    公开(公告)日：1975-12-09

    申请号：US44106174

    申请日：1974-02-11

    Applicant: KANEBO LTD

    Inventor： IZAWA NOBUO ,  KOHNO TOSHIHIKO

    IPC: C07D201/12 ,  C07D201/16

    CPC classification number: C07D201/12 ,  C07D201/16

    Abstract: Epsilon -CAPROLACTAM MATERIAL SUCH AS A MONOMER, OLIGOMERS AND POLYMERS OF Epsilon -CAPROLACTAM AND MIXTURES OF THESE COMPOUNDS ARE PURIFIED FROM IMPURITY COMPOUNDS SUCH AS PHOSPHORIC ACID AND IONIZED METAL COMPOUNDS CONTAINED THEREIN BY BRINGING THE Epsilon -CAPROLACTAM MATERIAL INTO CONTACT WITH AN AQUEOUS SOLUTION CONTAINING 15 TO 75 PERCENT BY WEIGHT OF AT LEAST ONE ALKALI METAL PHOSPHATE TO EXTRACT THE IMPURITY COMPOUND FROM THE Epsilon -CAPROLACTAM MATERIAL INTO THE PHOSPHATE AQUEOUS SOLUTION AND, THEREAFTER, SEPARATING THE Epsilon -CAPROLACTAM MATERIAL FROM THE PHOSPHATE AQUEOUS SOLUTION BY WAY OF SETTLING OR CENTRIFUGING THE MIXTURE.

    Abstract translation: ε-CABROLACTAM材料如EPS-CABROLACTAM的单体，低聚物和聚合物以及这些化合物的混合物，通过使ε-CABROLACTAM材料与含有AQUEOUS溶液接触的方式从包含在其中的酸性化合物和非离子化的金属化合物等净化化合物中纯化。 以至少一种碱金属磷酸盐的重量计为15至75％，以将来自ε-磷酸铵材料的重量化合物从磷酸盐水溶液中萃取，并且通过沉降或离心方式从磷酸盐水溶液中分离出ε-吡咯烷酮材料 混合物。

    4.
    发明专利
    未知

    公开(公告)号：DE3887555T2

    公开(公告)日：1994-06-30

    申请号：DE3887555

    申请日：1988-03-25

    Applicant: KANEBO LTD

    Inventor： KUSHIMOTO TOSHIHIRO ,  OZAWA YOSHIMICHI ,  IZAWA NOBUO

    IPC: C08G63/85

    Abstract: A process for producing a linear polyester comprising a main structural unit of an aromatic dicarboxylic acid ester of an alkylene glycol, particularly, comprising a polyethylene terephthalate or polytetramethylene terephthalate unit, is provided. In the process of the invention, the polycondensation reaction is conducted in the presence of a niobic acid catalyst that is obtained by heat-treating a hydrated niobium compound at the temperature range between 80 DEG C and 400 DEG C. The process of the invention is also effectively applied to the manufacture of an elastomeric polyester comprising a polyalkylene terephthalate as a hard segment and a polyalkylene glycol as a soft segment.

    5.
    发明专利
    未知

    公开(公告)号：DE3887555D1

    公开(公告)日：1994-03-17

    申请号：DE3887555

    申请日：1988-03-25

    Applicant: KANEBO LTD

    Inventor： KUSHIMOTO TOSHIHIRO ,  OZAWA YOSHIMICHI ,  IZAWA NOBUO

    IPC: C08G63/85

    Abstract: A process for producing a linear polyester comprising a main structural unit of an aromatic dicarboxylic acid ester of an alkylene glycol, particularly, comprising a polyethylene terephthalate or polytetramethylene terephthalate unit, is provided. In the process of the invention, the polycondensation reaction is conducted in the presence of a niobic acid catalyst that is obtained by heat-treating a hydrated niobium compound at the temperature range between 80 DEG C and 400 DEG C. The process of the invention is also effectively applied to the manufacture of an elastomeric polyester comprising a polyalkylene terephthalate as a hard segment and a polyalkylene glycol as a soft segment.

    PREPARATION OF POLYESTER ELASTOMER
    8.
    发明专利
    PREPARATION OF POLYESTER ELASTOMER 失效

    公开(公告)号：JPH01168729A

    公开(公告)日：1989-07-04

    申请号：JP32794787

    申请日：1987-12-24

    Applicant: KANEBO LTD

    Inventor： KUSHIMOTO TOSHIHIRO ,  OZAWA YOSHIMICHI ,  IZAWA NOBUO

    IPC: C08G63/66

    Abstract: PURPOSE:To obtain the title elastomer of high quality in a short reaction time while controlling by-product formation, by reacting a polyethylene terephthalate forming component and polyalkylene glycol in the presence of a specified catalyst. CONSTITUTION:A polyethylene terephthalate forming component (A) constituting a hard segment (e.g., a mixture of terephthalic acid with ethylene glycol), 5-200wt.% polyalkylene glycol (B) based on the component A constituting a soft segment and having a number-average MW of 500-5,000 (e.g., polytetramethylene glycol) are reacted in the presence of a catalyst (C) which is 0.0001-0.1wt.% soluble niobium compd. (a) heat-treated if necessary (e.g., niobic acid heat-treated at 80-400 deg.C in advance) and, if necessary, another catalyst (b).

    FIBER REINFORCED RESIN COMPOSITE MATERIAL
    9.
    发明专利
    FIBER REINFORCED RESIN COMPOSITE MATERIAL 失效

    公开(公告)号：JPS6479236A

    公开(公告)日：1989-03-24

    申请号：JP23668087

    申请日：1987-09-21

    Applicant: KANEBO LTD

    Inventor： MAEDA HIROSHI ,  MORIMOTO SHIGEKI ,  IZAWA NOBUO

    IPC: C08J5/06

    Abstract: PURPOSE:To obtain the title composite material having excellent heat resistance, interfacial adhesiveness, drilling characteristics and dimensional stability, by incorporating a heat-resistant resin in arom. polyamide fibers treated with a benzothiazole compd. CONSTITUTION:Arom. polyamide fibers (A) to which 0.01-5wt.% benzothiazole compd. are added are obtd. by immersing dried arom. polyamide fibers [e.g., poly(p-phenyleneterephthalamide)] in a soln. contg. 0.1-10wt.% benzothiazole compd. (e.g., 2-mercaptobenzothiazole) and drying them. Then, the component A is immersed in a soln. contg. 30-70wt.% heat-resistant resin (e.g., epoxy resin) and dried to obtain a prepreg. Then, a fiber reinforced resin composite material is obtd. by laminating specific pieces of the prepregs and heating and pressing them at 150-250 deg.C under a pressure of 10-150kg/cm .

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