公开(公告)号：US4681978A

公开(公告)日：1987-07-21

申请号：US770249

申请日：1985-08-28

申请人： Takashi Yamauchi ,  Shoichiro Hayashi ,  Atsushi Sasakawa

发明人： Takashi Yamauchi ,  Shoichiro Hayashi ,  Atsushi Sasakawa

IPC分类号： C07C63/38 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/265 ,  C07C67/00

CPC分类号： C07C51/265

摘要： Disclosed herein is a process for producing 2,6-naphthalenedicarboxylic acid, comprising (1) oxidizing 2,6-diisopropylnaphthalene in a lower fatty acid as a solvent in the presence of a catalyst comprising a water-soluble cobalt salt and/or a water-soluble manganese salt in an amount of at least 0.5 gram-atom of Co and/or Mn to 1 mol of 2,6-diisopropylnaphthalene by an oxygen-containing gas, thereby obtaining isopropylnaphthalene-monocarboxylic acid and (2) further oxidizing the thus obtained 6-isopropyl-2-naphthoic acid in the lower fatty acid in the presence of the catalyst comprising a water-soluble cobalt salt and/or a water-soluble manganese salt in an amount of from 0.0025 to 0.12 gram-atom to 1 mol of 6-isopropyl-2-naphthoic acid by the oxygen-containing gas, thereby obtaining 2,6-naphthalenedicarboxylic acid.

摘要翻译： 本文公开了2,6-萘二羧酸的制备方法，其包括（1）在含有水溶性钴盐和/或水的催化剂存在下，在低级脂肪酸中作为溶剂氧化2,6-二异丙基萘 通过含氧气体将至少0.5克原子的Co和/或Mn与1摩尔的2,6-二异丙基萘的可溶性锰盐混合，得到异丙基萘 - 一元羧酸，（2）进一步氧化 在包含水溶性钴盐和/或水溶性锰盐的催化剂存在下，在低级脂肪酸中得到6-异丙基-2-萘甲酸，其量为0.0025至0.12克原子至1摩尔 的6-异丙基-2-萘甲酸通过含氧气体反应，得到2,6-萘二甲酸。

公开(公告)号：US4794195A

公开(公告)日：1988-12-27

申请号：US26322

申请日：1987-03-16

申请人： Shoichiro Hayashi ,  Toshiharu Matsuda ,  Atsushi Sasakawa ,  Yutaka Konai

发明人： Shoichiro Hayashi ,  Toshiharu Matsuda ,  Atsushi Sasakawa ,  Yutaka Konai

IPC分类号： C07C51/265

CPC分类号： C07C51/265

摘要： Disclosed herein is a process for producing a highly pure produce of 2,6-naphthalenedicarboxylic acid in a large quantity at a moderate price by oxidizing 2,6-diisopropylnaphthalene while using a water-soluble salt of cobalt, a water-soluble salt of maganese or a mixture thereof, a water-soluble salt of cerium and a bromine compound as the catalyst of the oxidation.

摘要翻译： 本文公开了一种通过使用钴的水溶性盐，岩藻糖的水溶性盐，通过氧化2,6-二异丙基萘，以适量的价格大量生产高纯度2,6-萘二甲酸的方法 或其混合物，作为氧化催化剂的铈和溴化合物的水溶性盐。

公开(公告)号：US4873366A

公开(公告)日：1989-10-10

申请号：US177774

申请日：1988-04-05

申请人： Toshiharu Matsuda ,  Atsushi Sasakawa ,  Shoichiro Hayashi ,  Yutaka Konai

发明人： Toshiharu Matsuda ,  Atsushi Sasakawa ,  Shoichiro Hayashi ,  Yutaka Konai

IPC分类号： B01J35/04 ,  B01J27/08 ,  B01J27/128 ,  C07B61/00 ,  C07C51/00 ,  C07C51/265 ,  C07C63/38 ,  C07C67/00

CPC分类号： C07C51/265

摘要： Disclosed in the present invention is a process for producing 2,6-naphthalenedicarboxylic acid comprising oxidizing 2,6-diisopropylnaphthalene or its partially oxidized intermediate with molecular oxygen in a solvent containing at least 50% by weight of an aliphatic monocarboxylic acid, having not more than three carbon atoms, in the presence of a catalyst composed of (i) a heavy metal comprising cobalt and/or manganese and (ii) bromine, and a salt of an inorganic acid having an acid dissociation constant Ka smaller than 1.34.times.10.sup.-5 (at 25.degree. C.) and a vapor pressure lower than that of the aliphatic monocarboxylic acid used as the solvent. According to the process of this invention, 2,6-naphthalenedicarboxylic acid of high bulk density can be obtained in a high yield and with high purity.

公开(公告)号：US4970338A

公开(公告)日：1990-11-13

申请号：US307187

申请日：1988-11-30

申请人： Toshiharu Matsuda ,  Tadashi Nakamura ,  Atsushi Sasakawa ,  Shoichiro Hayashi ,  Yutaka Konai

发明人： Toshiharu Matsuda ,  Tadashi Nakamura ,  Atsushi Sasakawa ,  Shoichiro Hayashi ,  Yutaka Konai

IPC分类号： B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/265 ,  C07C63/331 ,  C07C67/00

CPC分类号： C07C51/265

摘要： Biphenyl-4,4'-dicarboxylic acid is prepared by isolating a mixture of diisopropylbiphenyls from a reaction mixture obtained by reacting biphenyl with propylene, crystallizing 4,4'-diisopropylbiphenyl from the mixture of diisopropylbiphenyls, and oxidizing 4,4'-diisopropylbiphenyl or an oxidation intermediate thereof with molecular oxygen in the presence of an oxidation catalyst, which comprises a cobalt catalyst and/or manganese catalyst, in a solvent containing at least 50 wt. % of an aliphatic mono- carboxylic acid having up to 3 carbon atoms.

公开(公告)号：US4754060A

公开(公告)日：1988-06-28

申请号：US22962

申请日：1987-03-06

申请人： Shoichiro Hayashi ,  Toshiharu Matsuda ,  Atsushi Sasakawa

发明人： Shoichiro Hayashi ,  Toshiharu Matsuda ,  Atsushi Sasakawa

IPC分类号： C07B61/00 ,  B01J27/00 ,  B01J31/00 ,  C07C51/00 ,  C07C51/21 ,  C07C51/265 ,  C07C51/31 ,  C07C63/307 ,  C07C63/38 ,  C07C67/00

CPC分类号： C07C51/265 ,  C07C51/313

摘要： Disclosed herein is a process for producing 2,6-naphthalenedicarboxylic acid together with trimellitic acid comprising oxidizing 2,6-diisopropylnaphthalene with molecular oxygen in the presence of a catalyst comprising a heavy metal(s) and bromine.

摘要翻译： 本文公开了2,6-萘二甲酸与偏苯三酸一起生产的方法，包括在包含重金属和溴的催化剂存在下，用分子氧氧化2,6-二异丙基萘。