公开(公告)号：KR870001141B1

公开(公告)日：1987-06-11

申请号：KR840007431

申请日：1984-11-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA DERUYUKI ,  KAMAKI AKIHIRO ,  OONISHI HIROKI ,  MIZUTA HIDEKI

IPC: C07B61/00 ,  B01J23/00 ,  B01J23/38 ,  C07C20060101 ,  C07C67/00 ,  C07C209/36 ,  C07C211/46 ,  C07C213/00 ,  C07C217/84 ,  C07C93/14

公开(公告)号：DE69502242D1

公开(公告)日：1998-06-04

申请号：DE69502242

申请日：1995-07-07

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NARUSE HIROSHI ,  MIZUTA HIDEKI ,  UMEDA SHINICHI ,  NAGATA TERUYUKI

IPC: C07C275/14 ,  C07D233/34

Abstract: A bis-urea compound represented by the formula (3) wherein R is an alkyl group, a process for its preparation and its use for preparing 1,3-dialkyl-2-imidazolidinone represented by the formula (2) wherein R is an alkyl group, are disclosed.w

公开(公告)号：NO962292D0

公开(公告)日：1996-06-04

申请号：NO962292

申请日：1996-06-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  HAYASHI HIDETOSHI ,  MIZUTA HIDEKI

IPC: C07C51/60 ,  C07C303/02 ,  C07C303/22 ,  C07C309/86 ,  C07D233/28 ,  C07C

Abstract: A preparation process of acyl halide or sulfonyl halide which comprises reacting corresponding carboxylic acid or sulfonic acid with a haloiminium salt represented by the general formula (1): wherein R and R are same or different lower alkyl groups, X is a halogen atom, and n is an integer of 2 or 3.

公开(公告)号：AU617590B2

公开(公告)日：1991-11-28

申请号：AU4996390

申请日：1990-02-21

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  WADA MASARU ,  MIZUTA HIDEKI

IPC: C07C263/10 ,  C07C265/14

公开(公告)号：CA1287360C

公开(公告)日：1991-08-06

申请号：CA533610

申请日：1987-04-01

Applicant: MITSUI TOATSU CHEMICALS

Inventor： MIURA TOHRU ,  NAGATA TERUYUKI ,  MIZUTA HIDEKI

IPC: C07C65/105 ,  C07C51/347 ,  C07C51/377 ,  C07C65/15

Abstract: A process for the preparation of 4'-hydroxy-biphenyl-4-carboxylic acid by reacting a cyclohexanone4-carboxylic acid compound with phenol in the presence of an acid catalyst, and then subjecting the resulting 4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid compound to decomposition and dehydrogenation reactions in the presence of a base and a dehydrogenation catalyst. The aforesaid cyclohexanone-4-carboxylic acid compound is obtained by catalytically hydrogenating a 4-hydroxy-benzoic acid compound in a secondary alcohol or tertiary alcohol solvent, and the reaction mixture thus obtained is directly used for the reaction with phenol.

公开(公告)号：AU3577284A

公开(公告)日：1985-06-06

申请号：AU3577284

申请日：1984-11-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  OHNISHI HIROKI ,  MIZUTA HIDEKI

IPC: C07C85/11 ,  C07C93/14

公开(公告)号：DE69613931D1

公开(公告)日：2001-08-23

申请号：DE69613931

申请日：1996-10-18

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI SHOJI ,  MORI YUKIKO ,  GOTO KENICHI ,  WATANABE KATSUJI ,  KOHGO OSAMU ,  SHIMIZU KOTARO ,  KATAOKA TOSHIYUKI ,  KUROKI TAKASHI ,  YAMASHITA WATARU ,  MIZUTA HIDEKI ,  NAGATA TERUYUKI

IPC: C08G63/82 ,  C08G63/87 ,  C08G69/04 ,  C08G69/28 ,  C08G73/10 ,  C08G75/26 ,  C08G69/26

Abstract: The invention provides a novel preparation process of a polycondensation type polymer, an excellent polymer which is represented by lactic acid and the preparation process of the polymer, a polycondensation agent used for the preparation process, and an intermediate. Specifically, the invention provides a preparation process of the polycondensation type polymer, for example, polyamide, polyimide, polythioester and polyester, comprising bonding a carboxyl group comprising compound with an active hydrogen group comprising compound in the presence of haloiminium salt. The invention provides excellent polylactic acid having a controlled D/L-isomer ratio in the repeating structural units and preparation process of polylactic acid, and further provides a haloiminium salt compound used for the preparation process and an intermediate compound of acid chloride.

公开(公告)号：NO962292A

公开(公告)日：1996-12-23

申请号：NO962292

申请日：1996-06-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  HAYASHI HIDETOSHI ,  MIZUTA HIDEKI

IPC: C07C51/60 ,  C07C303/02 ,  C07C303/22 ,  C07C309/86 ,  C07D233/28 ,  C07C53/38

CPC classification number: C07D233/28 ,  C07C51/60 ,  C07C303/02 ,  C07C303/22 ,  C07C309/86

公开(公告)号：DE69017830T2

公开(公告)日：1995-07-13

申请号：DE69017830

申请日：1990-10-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  WADA MASARU ,  MIZUTA HIDEKI

IPC: C07C263/10 ,  C07C265/14

Abstract: This invention is an industrially efficient and improved process for the preparation of aliphatic polyisocyanates by using esters as the solvent for converting aliphatic polyamines to isocyanates.

公开(公告)号：DE69011358T2

公开(公告)日：1994-12-15

申请号：DE69011358

申请日：1990-02-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  WADA MASARU ,  MIZUTA HIDEKI

IPC: C07C263/10 ,  C07C265/14