公开(公告)号：JPH03294216A

公开(公告)日：1991-12-25

申请号：JP9730390

申请日：1990-04-11

Applicant: TORAY INDUSTRIES

Inventor： YAMADA SHINICHI ,  NAKAGAWA YUKIO

IPC: A61K8/00 ,  A61Q5/04

Abstract: PURPOSE:To quickly perform permanent wave treatment giving little damage to the human body, scalp and hair while shortening the hair-fixing time by reducing and softening hair and oxidizing and fixing the softened hair with an aqueous solution containing transition metal ion. CONSTITUTION:Hair is reduced and softened with a 1st solution containing an organic acid having thiol group and the softened hair is fixed with a 2nd solution containing an oxidizing agent (e.g. bromic acid salt). The hair is treated with an aqueous solution containing a transition metal ion after the treatment with the 1st solution and before the oxidative fixing treatment or during the oxidative fixing stage to effect the permanent wave treatment of the hair. The oxidative fixing is preferably carried out in an oxygen-enriched air atmosphere and the transition metal ion is e.g. Fe ion and Cu ion.

公开(公告)号：JPH022827A

公开(公告)日：1990-01-08

申请号：JP27184788

申请日：1988-10-27

Applicant: TORAY INDUSTRIES

Inventor： NAKAGAWA YUKIO ,  MURAKISHI HIDEO ,  UEMURA TADAHIRO ,  OOTO KATSUFUMI ,  HIRAI MIHO

IPC: B01D61/10 ,  B01D71/56 ,  B01D71/82 ,  C02F1/44

Abstract: PURPOSE:To effectively improve the ability of a cross-linked polyamide-based reverse osmotic membrane to selectively separate metal ions contained in a stock soln. to be treated at a low concn. by bringing the membrane into contact with an aq. soln. contg. a water soluble amino compd. CONSTITUTION:When A stock soln. having

公开(公告)号：JPS6322163B2

公开(公告)日：1988-05-11

申请号：JP22638282

申请日：1982-12-24

Applicant: TORAY INDUSTRIES

Inventor： NAKAGAWA YUKIO ,  OOTO KATSUFUMI ,  KURIHARA MASARU

IPC: B01D61/08 ,  B01D65/06 ,  B01D67/00 ,  B01D71/82

公开(公告)号：JPS5424819A

公开(公告)日：1979-02-24

申请号：JP8929577

申请日：1977-07-27

Applicant: TORAY INDUSTRIES

Inventor： HARADA ROKUROU ,  YAMAZAKI TOORU ,  NAKAGAWA YUKIO

IPC: C07C227/40 ,  C07C67/00 ,  C07C227/00 ,  C07C229/08 ,  C07C229/48 ,  C07C229/54

Abstract: PURPOSE:To obtain a high purity primary aminocarboxylic acid ester from a crude primary aminocarboxylic acid ester, removing the existing secondary aminocarboxylic acid ester using a hydrocarbon as an extractor.

公开(公告)号：JPS62110706A

公开(公告)日：1987-05-21

申请号：JP24892685

申请日：1985-11-08

Applicant: TORAY INDUSTRIES

Inventor： NAKAGAWA YUKIO ,  KONISHI KENICHI ,  EDOGAWA KATSUYA

IPC: A61L2/18 ,  B01D65/02 ,  B01D65/06

Abstract: PURPOSE:To remove quat. ammonium salt adhering to the surface of membrane economically and in a short time in the stage of reverse osmosis using furfuryl alcohol or polyamide semipermeable membrane by adding quat. ammonium salt to the feed liquid by post-treating the surface of the membrane with an anionic surface active agent. CONSTITUTION:In the stage of performing reverse osmotic separation using reverse osmotic compound membrane provided with a thin film comprising furfuryl alcohol crosslinked polymer or a reverse osmosis module using polyamide semipermeable membrane, adding intermittently quat. ammonium salt as germicide to the feed liquid, the whole body of the reverse osmosis plant is filled with aq. soln. contg. anionic surfactant such as Na salt of dodecyl sulfate, etc., if the permeated quantity is decreased, and the plant is washed with the aq. soln. After the washing liquid is discharged, the operation of the reverse osmosis plant is resumed.