公开(公告)号：JP2541716B2

公开(公告)日：1996-10-09

申请号：JP19809791

申请日：1991-08-07

Applicant: TORAY INDUSTRIES

Inventor： YOSHIKAWA YOSHIHIRO ,  KANAI TAKASHI ,  NOGUCHI YOSHIO

IPC: B01J20/16 ,  B01J20/34

公开(公告)号：JPH0446933B2

公开(公告)日：1992-07-31

申请号：JP4687789

申请日：1989-02-27

Applicant: TORAY INDUSTRIES

Inventor： KANAI TAKASHI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

IPC: C07C17/38 ,  C07C17/00 ,  C07C17/389 ,  C07C25/02 ,  C07C25/08 ,  C07C67/00

公开(公告)号：JPH0446931B2

公开(公告)日：1992-07-31

申请号：JP33141588

申请日：1988-12-27

Applicant: TORAY INDUSTRIES

Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

IPC: C07C25/02 ,  C07C17/00 ,  C07C17/38 ,  C07C17/389 ,  C07C67/00

公开(公告)号：JPH01250330A

公开(公告)日：1989-10-05

申请号：JP33141588

申请日：1988-12-27

Applicant: TORAY INDUSTRIES

Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

IPC: C07C25/02 ,  C07C17/00 ,  C07C17/38 ,  C07C17/389 ,  C07C67/00

Abstract: PURPOSE:To adsorb and separate especially the 3,5-isomer, by treating a dichlorocumene isomer mixture with an adsorbent consisting of zeolite, such as faujasite, L or beta type, having a specific silica/alumina molar ratio and pore diameter. CONSTITUTION:The 3,5-isomer is separated from a dichlorocumene isomer mixture. In the process, zeolite (e.g., faujasite, L or beta type) having >=2 molar ratio of silica/alumina and 0.6-1.0nm pore diameter is used as an adsorbent to carry out adsorption at 50-250 deg.C under atmospheric pressure -40kg/cm G. Thereby, the aimed substance is efficiently obtained in high purity. The method for adsorption and separation may be carried out by either of methods for chromatographic separation and collection and using continuous a pseudo-moving bed. The present substance is useful as a synthetic intermediate for medicines, agricultural chemicals, dyes, etc.

公开(公告)号：JPS5390233A

公开(公告)日：1978-08-08

申请号：JP232477

申请日：1977-01-14

Applicant: TORAY INDUSTRIES

Inventor： MIYAZAKI KEN ,  SAEKI NOBUO ,  NOGUCHI YOSHIO

IPC: C07C63/26 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00

Abstract: PURPOSE:To purify the terephthalic acid, obtd. by oxidation of p-xylene, by multi-stage treatment in water, acetic acid or the like; that is, by treating at >= 140 deg.C in at least one of the stages, and recycling the filtrate of the latter stage as a purification medium for the preceding stage.

公开(公告)号：JPS5353634A

公开(公告)日：1978-05-16

申请号：JP12732376

申请日：1976-10-25

Applicant: TORAY INDUSTRIES

Inventor： TAKEHISA YOSHIO ,  NOGUCHI YOSHIO ,  KAWASAKI YASUO

IPC: C07C63/26 ,  C07C51/00 ,  C07C51/42 ,  C07C67/00

Abstract: PURPOSE:To prepare highly pure terephthalic acid by washing the crude terephthalic acid, obtained by the oxidation of p-xylene in acetic acid in the presence of catalysts and an accelerator, with acetic acid, the acetic acid is recovered by the concentration of the washed solution by evaporation, the residual solid is removed, and the residual fluid is recycled.

公开(公告)号：JPS5186092A

公开(公告)日：1976-07-28

申请号：JP1046875

申请日：1975-01-27

Applicant: TORAY INDUSTRIES

Inventor： TADA KUNYUKI ,  YABU MINORU ,  INOE TAKEHISA ,  NOGUCHI YOSHIO ,  MIWA KINOO ,  KADOI KAZUO

IPC: B01J23/31 ,  B01J23/28 ,  C07B61/00 ,  C07C67/00 ,  C07C253/00 ,  C07C255/08

公开(公告)号：JPH062577B2

公开(公告)日：1994-01-12

申请号：JP17426585

申请日：1985-08-09

Applicant: TORAY INDUSTRIES

Inventor： YAMADA BUNJI ,  NOGUCHI YOSHIO ,  KIMURA MICHIO

IPC: C01B39/04 ,  C01B39/26 ,  C01B33/34

公开(公告)号：JPH02229122A

公开(公告)日：1990-09-11

申请号：JP5091389

申请日：1989-03-01

Applicant: TORAY INDUSTRIES

Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

IPC: B01D15/00 ,  B01D15/08 ,  C07C17/38 ,  C07C17/389 ,  C07C25/02

Abstract: PURPOSE:To separate especially 3,5-isomor from a mixture of dichlorocumene isomers by using a zeolite having specific silica/alumina molar ratio and pore diameter as an adsorbent and xylene as a desorbent. CONSTITUTION:Especially 3,5-isomer is separated and recovered from a mixture of dichlorocumene isomers by using a zeolite having a silica/alumina molar ratio of >=2 (preferably 2-30) and a pore diameter of 0.6-1.0nm as an adsorbent and xylene as a desorbent. The separation operation is carried out preferably at 50-250 deg.C under atmospheric pressure - 40kg/cm G in liquid phase. The zeolite is preferably selected from faujasite-type zeolite. L-type zeolite and beta-type zeolite. The 3,5-isomer useful as an intermediate for pharmaceuticals, agricultural chemicals, dyes, etc., can be separated and recovered in high purity and efficiency by the present process.

公开(公告)号：JPH02178240A

公开(公告)日：1990-07-11

申请号：JP33141688

申请日：1988-12-27

Applicant: TORAY INDUSTRIES

Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

IPC: C07C17/38 ,  C07C17/389 ,  C07C25/02

Abstract: PURPOSE:To efficiently absorb and separate a desired dichlorocumene isomer from a dichlorocumene isomer mixture using a specific zeolite as a absorbing agent and simultaneously using a halogenated alkylbenzene, etc., as a desorbing agent. CONSTITUTION:When a desired dichlorocumene isomer, especially 3,5- dichlorocumene useful as an intermediate for agricultural chemical, medicine, dye, etc., is absorbed and separated, a zeolite having >=2, preferably 2-30 silica/ alumina ratio and 0.6-1.0nm pore size, especially one or more kinds of compounds selected from faujasite type zeolite, L type zeolite and beta type zeolite are used as absorbing agent and simultaneously one or more kinds of compounds are used as desorbing agents to industrially and advantageously separate the aimed isomer.