公开(公告)号：US3529031A

公开(公告)日：1970-09-15

申请号：US3529031D

申请日：1969-04-10

Applicant: TORAY INDUSTRIES

Inventor： OTANI SEIYA ,  IWAMURA TAKAO ,  HAYASHI SHOTARO ,  OGAWA DAISUKE

IPC: C07C6/12 ,  C07C3/58 ,  B01D3/34 ,  C07C7/00

CPC classification number: C07C6/123 ,  Y10S585/903

公开(公告)号：DE69807135D1

公开(公告)日：2002-09-19

申请号：DE69807135

申请日：1998-01-29

Applicant: TORAY INDUSTRIES

Inventor： OGAWA DAISUKE ,  KOIKE MASAHIRO ,  YAMAMOTO YOSHIYUKI

IPC: C07D317/12

Abstract: Cyclic formal is manufactured by cyclic reaction of an alkylene glycol and an aldehyde in a reactor, producing formal mixed with unreacted aldehyde as an impurity, which is reduced in amount by connecting the reactor to a distillation tower and continuously supplying a raw alkylene glycol to the distillation tower from which unreacted formaldehyde and a cyclic formal are being distilled, and continuously reacting them with supplied raw formaldehyde by countercurrent flow during distillation. Water content in azeotropic admixture with cyclic formal can be removed by azeotropic distillation with a hydrocarbon azeotropic admixture with water, distilling water from the cyclic formal.

公开(公告)号：CA939389A

公开(公告)日：1974-01-01

申请号：CA74758

申请日：1970-02-12

Applicant: TORAY INDUSTRIES

Inventor： OTANI SEIYA ,  IWAMURA TAKAO ,  HAYASHI SHOTARO ,  OGAWA DAISUKE ,  MORI TOSHIO ,  SANDO KIICHIRO

IPC: C07C6/12

公开(公告)号：CA874463A

公开(公告)日：1971-06-29

申请号：CA874463D

Applicant: TORAY INDUSTRIES

Inventor： OGAWA DAISUKE ,  OTANI SEIYA ,  IWAMURA TAKAO ,  HAYASHI SHOTARO

公开(公告)号：MY120444A

公开(公告)日：2005-10-31

申请号：MYPI9800379

申请日：1998-01-27

Applicant: TORAY INDUSTRIES

Inventor： OGAWA DAISUKE ,  KOIKE MASAHIRO ,  YAMAMOTO YOSHIYUKI

IPC: C07D317/12

Abstract: CYCLIC FORMAL IS MANUFACTURED BY CYCLIC REACTION OF AN ALKYLENE GLYCOL AND AN ALDEHYDE IN A REACTOR, PRODUCING FORMAL MIXED WITH UNREACTED ALDEHYDE AS AN IMPURITY, WHICH IS REDUCED IN AMOUNT BY CONNECTING THE REACTOR TO A DISTILLATION TOWER AND CONTINUOUSLY SUPPLYING A RAW ALKYLENE GLYCOL TO THE DISTILLATION TOWER FROM WHICH UNREACTED FORMALDEHYDE AND A CYCLIC FORMAL ARE BEING DISTILLED, AND CONTINUOUSLY REACTING THEM WITH SUPPLIED RAW FORMALDEHYDE BY COUNTERCURRENT FLOW DURING DISTILLATION. WATER CONTENT IS AZEOTROPIC ADMIXTURE WITH CYCLIC FORMAL CAN BE REMOVED BY AZEOTROPIC DISTILLATION WITH A HYDROCARBON AZEOTROPIC ADMIXTURE WITH WATER, DISTILLING WATER FROM THE CYCLIC FORMAL.

公开(公告)号：CA874464A

公开(公告)日：1971-06-29

申请号：CA874464D

Applicant: TORAY INDUSTRIES

Inventor： KANAOKA MASAZUMI ,  OGAWA DAISUKE ,  HAYASHI SHOTARO ,  IWAMURA TAKAO ,  OTANI SEIYA

公开(公告)号：DE69807135T2

公开(公告)日：2003-03-27

申请号：DE69807135

申请日：1998-01-29

Applicant: TORAY INDUSTRIES

Inventor： OGAWA DAISUKE ,  KOIKE MASAHIRO ,  YAMAMOTO YOSHIYUKI

IPC: C07D317/12

Abstract: Cyclic formal is manufactured by cyclic reaction of an alkylene glycol and an aldehyde in a reactor, producing formal mixed with unreacted aldehyde as an impurity, which is reduced in amount by connecting the reactor to a distillation tower and continuously supplying a raw alkylene glycol to the distillation tower from which unreacted formaldehyde and a cyclic formal are being distilled, and continuously reacting them with supplied raw formaldehyde by countercurrent flow during distillation. Water content in azeotropic admixture with cyclic formal can be removed by azeotropic distillation with a hydrocarbon azeotropic admixture with water, distilling water from the cyclic formal.

公开(公告)号：SG65045A1

公开(公告)日：1999-05-25

申请号：SG1998000152

申请日：1998-01-21

Applicant: TORAY INDUSTRIES

Inventor： OGAWA DAISUKE ,  KOIKE MASAHIRO ,  YAMAMOTO YOSHIYUKI

IPC: C07D317/12

Abstract: Cyclic formal is manufactured by cyclic reaction of an alkylene glycol and an aldehyde in a reactor, producing formal mixed with unreacted aldehyde as an impurity, which is reduced in amount by connecting the reactor to a distillation tower and continuously supplying a raw alkylene glycol to the distillation tower from which unreacted formaldehyde and a cyclic formal are being distilled, and continuously reacting them with supplied raw formaldehyde by countercurrent flow during distillation. Water content in azeotropic admixture with cyclic formal can be removed by azeotropic distillation with a hydrocarbon azeotropic admixture with water, distilling water from the cyclic formal.

公开(公告)号：ID19754A

公开(公告)日：1998-07-30

申请号：ID980124

申请日：1998-01-28

Applicant: TORAY INDUSTRIES

Inventor： OGAWA DAISUKE ,  KOIKE MASAHIRO ,  YAMAMOTO YOSHIYUKI

IPC: C07D317/12 ,  C07B63/00

Abstract: Cyclic formal is manufactured by cyclic reaction of an alkylene glycol and an aldehyde in a reactor, producing formal mixed with unreacted aldehyde as an impurity, which is reduced in amount by connecting the reactor to a distillation tower and continuously supplying a raw alkylene glycol to the distillation tower from which unreacted formaldehyde and a cyclic formal are being distilled, and continuously reacting them with supplied raw formaldehyde by countercurrent flow during distillation. Water content in azeotropic admixture with cyclic formal can be removed by azeotropic distillation with a hydrocarbon azeotropic admixture with water, distilling water from the cyclic formal.

公开(公告)号：CA1050520A

公开(公告)日：1979-03-13

申请号：CA248041

申请日：1976-03-16

Applicant: TORAY INDUSTRIES

Inventor： KANAOKA MASAZUMI ,  OGAWA DAISUKE ,  IWAYAMA KAZUYOSHI ,  KIHARA MAKOTO

IPC: B01J20/18 ,  C07C1/00 ,  C07C7/13 ,  C07C15/08 ,  C07C67/00 ,  B01J29/06

Abstract: An adsorbent for separating para-isomers from C8 or C10 aromatic hydrocarbons, specifically, a faujasite zeolite wherein about 2.5 to 25 percent, based on the total exchangeable cation sites originally present within the faujasite zeolite, is decationized and metal ions at the residual cation sites are exchanged substantially with potassium and/or barium ions. The adsorbent is used in separating the par-isomer, which is isolated by desorbing from the adsorbent.