公开(公告)号：JPH03130249A

公开(公告)日：1991-06-04

申请号：JP16038990

申请日：1990-06-19

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ISHIBASHI MASAYASU ,  MATSUNAGA YUICHI

IPC: C07C69/52 ,  C07C69/76 ,  C07C69/773 ,  C07C69/80 ,  C07C69/82 ,  C07C315/06 ,  C07C317/44

Abstract: PURPOSE:To obtain the subject compound as a raw material of production of aromatic polyester, etc., in high purity with using a small amount of solvent by dissolving aromatic dicarboxylic acid diaryl ester as a raw material to be purified in a recrystallization solvent and recrystallizing under cooling in the presence of an alcohol. CONSTITUTION:Aromatic dicarboxylic acid diaryl ester is dissolved in a recrystallization solvent (preferably solely a species, or mixture of more than two species of: toluene, o-xylene, m-xylene and pseudocumene, etc.) with heating and recrystallized with cooling (usually 0-50 deg.C) in the presence of an alcohol (preferably methanol, isopropanol or a butoxy ethanol) to purity the objective compound. A heating temperature dissolving said raw material to be purified is preferably 50-300 deg.C and the pressure is preferably from normal pressure to 10kg/cm G. Using amount of the recrystallization solvent is preferably 10-100 pts.wt. with 50-200 pts.wt. alcohol to 100 pts.wt. purifying raw material.

公开(公告)号：JPH0474155A

公开(公告)日：1992-03-09

申请号：JP33124590

申请日：1990-11-28

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ISHIBASHI MASAYASU ,  MATSUNAGA YUICHI ,  KASHIWA HIDENORI ,  TAKAHATA KAZUNORI

IPC: B01J31/12 ,  C07B61/00 ,  C07C67/08 ,  C07C69/82 ,  C07C69/94

Abstract: PURPOSE:To obtain aryl aromatic carboxylates in high selectivity by the coexistence of a protonic acid or a solid acid in reacting phenols with an aromatic carboxylic acid in the presence of a tin compound-based esterification catalyst. CONSTITUTION:Phenols are reacted with an aromatic carboxylic acid in the presence of a tin compound-based esterification catalyst (an organotin compound is especially preferred) to provide aryl aromatic carboxylates. In the process, high selectivity is attained by the coexistence of a protonic acid or a solid acid (hydrochloric acid, nitric acid, heteropoly acid, p-toluenesulfonic acid, silica, alumina, etc., are especially preferred). An aromatic dicarboxylic acid, especially terephthalic acid is preferably used as the aromatic carboxylic acid to produce a diester.

公开(公告)号：JPH03188047A

公开(公告)日：1991-08-16

申请号：JP32805789

申请日：1989-12-18

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ISHIBASHI MASAYASU ,  MATSUNAGA YUICHI

IPC: B01J31/12 ,  C07B61/00 ,  C07C67/03 ,  C07C69/773 ,  C07C69/82

Abstract: PURPOSE:To obtain the subject compound in high selectivity and high rate of reaction while suppressing side reactions at high temperature by reacting a phenolic compound with an aromatic carboxylic acid in the presence of an esterification catalyst and a platinum-group metal or its compound. CONSTITUTION:An aromatic carboxylic acid aryl ester can be produced by reacting a phenolic compound with an aromatic carboxylic acid at 150-350 deg.C in the presence of (A) an esterification catalyst, preferably a tin compound, especially a compound of formula (R to R are alkyl or aryl; X and X are OH, alkoxy or aryloxy) and (B) a platinum-group metal (preferably Pt, Pd or Ru) or its compound, preferably the metal, etc., treated with hydrogen. Preferably, the amount of the catalyst is 1X10 to 1X10 and that of the platinum- group metal is 1X10 to 1X10mol per 1mol of the aromatic carboxylic acid.

公开(公告)号：JPH0311040A

公开(公告)日：1991-01-18

申请号：JP14331789

申请日：1989-06-06

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ISHIBASHI MASAYASU ,  MATSUNAGA YUICHI

IPC: C07C67/52 ,  C07C69/76 ,  C07C69/80 ,  C07C69/82

Abstract: PURPOSE:To obtain the purified and high-purity title compound having excellent hue in high recovery by dissolving an aromatic dicarboxylic acid diaryl ester using a specific amount of recrystallizing solvent and then cooling the solution and crystallizing the above-mentioned ester to purity the above-mentioned ester. CONSTITUTION:An aromatic dicarboxylic acid diaryl ester such as a terephthalic acid diphenyl ester is dissolved in a recrystallizing solvent on heating at a ratio of the above-mentioned recrystallizing solvent of 1-200 pts.wt. to the above- mentioned aromatic dicarboxylic acid diaryl ester of 100 pts.wt. at a temperature of melting point of the above-mentioned aromatic dicarboxylic acid diaryl ester or above under pressure of ordinary pressure to 100kg/cm G for a short time of 0.1-8hr and then the solution is cooled, preferably at 0-50 deg.C and recrystallized to provide the purified and high-purity aimed compound having excellent hue and useful as a raw material for aromatic polyester. As the above-mentioned recrystallizing solvent, pseudocumene, butyl ether, n-dodecane, etc., is used.

公开(公告)号：JPH01265064A

公开(公告)日：1989-10-23

申请号：JP9266388

申请日：1988-04-16

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KISO YOSHIHISA ,  MATSUNAGA YUICHI

IPC: B01J27/08 ,  B01J23/08 ,  B01J23/10 ,  B01J27/22 ,  B01J27/25 ,  B01J31/04 ,  B01J31/20 ,  B01J31/22 ,  C07B61/00 ,  C07C68/06 ,  C07C69/96

Abstract: PURPOSE:To obtain the title compound at a short time in high yield and easy purification, by reacting a phenol compound with a dialiphatic carbonate, etc., in the presence of a specific catalyst. CONSTITUTION:When a compound expressed by formula I (Ar is aromatic residue, etc.) is reacted with a compound (e.g., dimethylcarbonate) expressed by formula II (R' is monovalent hydrocarbon group) or a compound (e.g., phenylmethylcarbonate) expressed by formula III to provide the aromatic carbonate compound selected from an aliphatic aromatic carbonate, diaromatic carbonate and mixture thereof, one or two or more compounds selected from a group consisting of Sc, Cr, Mo, W, Mn, Au, Ga, In, Bi, Te and lanthanoid are used as a catalyst.

公开(公告)号：JPH01265062A

公开(公告)日：1989-10-23

申请号：JP9266188

申请日：1988-04-16

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KISO YOSHIHISA ,  MATSUNAGA YUICHI

IPC: B01J23/14 ,  B01J23/20 ,  B01J23/825 ,  B01J23/835 ,  B01J27/04 ,  B01J27/10 ,  B01J31/02 ,  B01J31/12 ,  B01J31/20 ,  B01J31/22 ,  B01J31/24 ,  C07B61/00 ,  C07C68/06 ,  C07C69/96

Abstract: PURPOSE:To remarkably enhance equilibrium constant and obtain the title compound in short time and high yield, by reacting a phenol compound with a dialiphatic carbonate, etc., under a specific high reaction temperature in the presence of a catalyst. CONSTITUTION:A compound (e.g., phenol or o, m or p-cresol) expressed by formula I (Ar is aromatic compound residue, etc.) is reacted with a compound (e.g., dimethylcarbonate) expressed by formula II (R' is monovalent aliphatic hydrocarbon) or compound (e.g., phenylmethylcarbonate or phenylethylcarbonate) expressed by formula III at 220-350 deg.C to provide the aromatic carbonate compound expressed by formula IV (e.g., diphenylcarbonate). The reaction temperature is preferably carried out at high temperature condition of 255-320 deg.C.

公开(公告)号：JPH0341036A

公开(公告)日：1991-02-21

申请号：JP17690189

申请日：1989-07-07

Applicant: MITSUI PETROCHEMICAL IND

Inventor： TANIGUCHI KATSUO ,  MATSUNAGA YUICHI ,  SHIMADA SHUJI ,  TATE TOSHIHIRO

IPC: B01J27/232 ,  B01J35/10 ,  C07B61/00 ,  C07C2/02 ,  C07C2/10 ,  C07C11/10

Abstract: PURPOSE:To obtain 1-pentene in high selectivity by codimerizing ethylene with propylene by means of a fixed bed method in the presence of a catalyst prepared by supporting an alkali metal on a compression molded granular carrier comprising anhydrous potassium carbonate and carbon. CONSTITUTION:Ethylene is codimerized with propylene in the molar ratio of 0.30-0.95 by a fixed bed method in the presence of a catalyst prepared by supporting alkali metals on a compression molded granular carrier comprising anhydrous potassium carbonate and carbon to give 1-pentene in a high productivity based on unit weight of the catalyst. The alkali metals consists of 20-90g atom % Na and 80-10g atom % K, the carrier contains 0.6-3wt.% carbon based on anhydrous K2CO3 and has 22-38% pore volume ratio and 1.5-15kg/cm compression strength. Anhydrous K2CO3 has 150-600mum average particle diameter and 0.50-0.70g/ml bulk density as raw powder before the compression molding.

公开(公告)号：JPH02180853A

公开(公告)日：1990-07-13

申请号：JP33504188

申请日：1988-12-29

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ISHIBASHI MASAYASU ,  MATSUNAGA YUICHI ,  SAKAMOTO MICHIO ,  TANIGUCHI KATSUO

IPC: C07C67/48 ,  C07C69/773 ,  C07C69/82 ,  C07C69/88

Abstract: PURPOSE:To obtain a high-purity aromatic carboxylic acid aryl ester useful as a raw material for aromatic polyester, having excellent due by hydrogenating a crude aromatic carboxylic acid aryl ester in an organic solvent in the presence of a hydrogenating catalyst. CONSTITUTION:An aromatic carboxylic acid aryl ester such as aromatic dicarboxylic diaryl ester, trimellitic acid triaryl ester or pyromellitic acid tetraaryl ester is hydrogenated in an organic solvent in the presence of a hydrogenating catalyst to give a purified aromatic carboxylic acid aryl ester. At least one selected from aromatic solvent, aliphatic alcohol, ethers and halogenated hydrocarbon, especially an alkylbenzene is preferably used. An aromatic polyester having a polymerization degree and excellent hue is obtained by using the compound.

公开(公告)号：JPH0228137A

公开(公告)日：1990-01-30

申请号：JP17629888

申请日：1988-07-15

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KISO YOSHIHISA ,  MATSUNAGA YUICHI

IPC: B01J31/02 ,  B01J31/22 ,  C07B61/00 ,  C07C69/773 ,  C07C69/82 ,  C07C69/96

Abstract: PURPOSE:To provide the subject compound in a high yield by reacting a phenol with an aromatic carboxylic acid in the presence of a Ti compound and/or a Zr compound as catalysts and subsequently the unreacted carboxylic acid groups with a diaryl carbonate. CONSTITUTION:When a phenol (e.g., phenol, cresol or bisphenol A) is reacted with an aromatic carboxylic acid (e.g., benzoic acid, phthalic acid or naphthalenedicarboxylic acid) to provide the subject compound, a Ti compound and/or a Zr compound are used as catalysts and the reaction is carried out at 150-350 deg.C for 30min-20hr. The Ti compound and the Zr compound as the catalysts include Ti(OCH3)4, TiCl4, ZrO2, ZrCl4, etc. The same kind of a diaryl carbonate is subsequently reacted with the unreacted aromatic carboxylic acid or a monoester thereof to provide the subject ester.

公开(公告)号：JPH04288041A

公开(公告)日：1992-10-13

申请号：JP4991091

申请日：1991-03-14

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KASHIWA HIDENORI ,  ISHIBASHI MASAYASU ,  MATSUNAGA YUICHI ,  TAKAHATA KAZUNORI

IPC: B01J23/18 ,  B01J31/26 ,  C07B61/00 ,  C07C67/08 ,  C07C69/773 ,  C07C69/82

Abstract: PURPOSE:To produce an aromatic carboxylic acid aryl ester in high selectivity by esterifying an aromatic dicarboxylic acid with a phenolic compound in the presence of a distannoxane derivative and antimony or its compound. CONSTITUTION:An aromatic carboxylic acid aryl ester (especially diphenyl terephthalate, etc.) can be produced in high reaction rate and selectivity in high purity and in an easily purifiable state by reacting a phenolic compound (especially phenol, etc.) with an aromatic carboxylic acid (especially terephthalic acid, etc.) in the presence of a distannoxane derivative (e.g. the compound of formula I or formula II) and antimony or its compound (especially preferably antimony trioxide) as the catalysts.