公开(公告)号：JPS5139608A

公开(公告)日：1976-04-02

申请号：JP11281474

申请日：1974-10-02

Applicant: TORAY INDUSTRIES

Inventor： KONDO RYOZO ,  OZASA SHIGEFUMI ,  SEKOYA TAKESHI ,  YAMAMOTO KAZUO

IPC: C07C211/09 ,  C07C67/00 ,  C07C209/00 ,  C07C209/48 ,  C07C209/62 ,  C07D223/10

公开(公告)号：JPS57165426A

公开(公告)日：1982-10-12

申请号：JP5123581

申请日：1981-04-07

Applicant: TORAY INDUSTRIES

Inventor： KONDOU RIYOUZOU ,  FUJIWARA KATSUAKI ,  OZASA SHIGEFUMI

IPC: C08G65/00 ,  C08G65/02 ,  C08G65/30 ,  C08G65/32 ,  C08G65/46

Abstract: PURPOSE:A water-soluble macromolecular amine such as bis(gamma-aminopropyl) polyethylene glycol is brought into contact with a sulfonic acid-type and quaternary ammonium type ion-exchange resin to remove low-molecular impurities, thus effecting its purification. CONSTITUTION:A water-soluble macromolecular amine such as bis(gamma-aminopropyl) PEG, which is prepared by hydrogenation of cyanoethylated polyethylene glycol, (100pts.wt.) is dissolved in water or aqueous alcohol (10-900pts.) and brought into contact with a sulfonic acid-type ion-exchange resin (regenerated into free H type) and/or quaternary ammonium type ion-exchange resin (regenerated into OH type) to effect purification. EFFECT:This process is useful for purification of an amine produced from a cyanoethylation product.

公开(公告)号：JPS616086B2

公开(公告)日：1986-02-24

申请号：JP5123581

申请日：1981-04-07

Applicant: Toray Industries

Inventor： KONDO RYOZO ,  FUJIWARA KATSUAKI ,  OZASA SHIGEFUMI

IPC: C08G65/00 ,  C08G65/02 ,  C08G65/30 ,  C08G65/32 ,  C08G65/46

公开(公告)号：JPS5156410A

公开(公告)日：1976-05-18

申请号：JP13047674

申请日：1974-11-14

Applicant: TORAY INDUSTRIES

Inventor： KONDO RYOZO ,  OZASA SHIGEFUMI ,  OONO TAKAE ,  SEKOYA TAKESHI ,  HATANO KAORU ,  SUZUKI KIMIO

IPC: C07C55/14 ,  C07C51/00 ,  C07C67/00 ,  C07C209/00 ,  C07C211/09

公开(公告)号：JPS55100206A

公开(公告)日：1980-07-31

申请号：JP609879

申请日：1979-01-24

Applicant: TORAY INDUSTRIES

Inventor： OZASA SHIGEFUMI ,  KONDOU RIYOUZOU ,  IKENO SHIGEO

IPC: C01B25/234 ,  C01B25/18

Abstract: PURPOSE:To efficiently recover high purity orthophosphoric acid reusable as catalyst from phosphoric acid catalyst-contg. depolymerization residue by heat calcining the residue after which orthophosphoric acid is extracted with water and contacted to an h-type strongly acidic cation exchange resin. CONSTITUTION:Polycaprolactam or oligocaprolactam depolymerization residue is heat calcined. Water or an aq. sulfuric acid soln. is added to the resulting carbide and boiled to hydrolyze condensed phosphoric acid, and an aq. orthophosphoric acid soln. is extracted. The extracted soln. is then filtered to remove insol. carbide and contacted to an h-type strongly acidic ion exchange resin such as phenol sulfonic acid resin to remove alkali metals and other impurities bonded to the acid, thus recovering an aq. orthophosphoric acid soln. of high purity. By this method phosphoric acid catalyst for depolymerization can be used repeatedly.

公开(公告)号：JPS5139684A

公开(公告)日：1976-04-02

申请号：JP11281574

申请日：1974-10-02

Applicant: TORAY INDUSTRIES

Inventor： KONDO RYOZO ,  OZASA SHIGEFUMI ,  SEKOYA TAKESHI

IPC: C07D201/12