公开(公告)号：US20090182169A1

公开(公告)日：2009-07-16

申请号：US12299935

申请日：2007-05-02

申请人： Fumiya Zaima ,  Nirou Hoshishima

发明人： Fumiya Zaima ,  Nirou Hoshishima

IPC分类号： C07C51/43

CPC分类号： C07C51/43 ,  C07C63/26

摘要： The present invention relates to a multi-stage crystallization process which comprises the steps of feeding a solution of terephthalic acid or a slurry (raw slurry) containing terephthalic acid partially precipitated to a first crystallization vessel to precipitate the terephthalic acid therein; and feeding a slurry (crystallization slurry) containing the thus precipitated terephthalic acid sequentially to second and subsequent crystallization vessels, wherein while continuously supplying a cleaning solvent to a delivery conduit connecting the former-stage crystallization vessel and the next latter-stage crystallization vessel to each other, the crystallization slurry is fed through the delivery conduit. There is provided a multi-stage crystallization process using a solution of terephthalic acid or a slurry containing terephthalic acid partially precipitated as a raw material in which even when the process is operated for a period as long as several months, the delivery conduit is free from occurrence of clogging.

摘要翻译： 本发明涉及多级结晶方法，其包括将对苯二甲酸溶液或含有部分沉淀的对苯二甲酸的浆料（原料浆料）进料到第一结晶容器中以使对苯二甲酸沉淀的步骤; 并将含有如此沉淀的对苯二甲酸的浆料（结晶浆料）顺序地送入第二和随后的结晶容器，其中在连续向连接前段结晶容器和下一级结晶容器的输送导管向每个 另外，结晶浆料通过输送导管进料。 提供了使用对苯二甲酸或含有部分沉淀的对苯二甲酸作为原料的浆料的多阶段结晶方法，其中即使该方法操作长达几个月的时间，输送管道不含 发生堵塞。

公开(公告)号：US20050054879A1

公开(公告)日：2005-03-10

申请号：US10924811

申请日：2004-08-25

申请人： Tomohiro Sugawara ,  Fumiya Zaima ,  Atsushi Okoshi ,  Kinji Kato ,  Masato Inari

发明人： Tomohiro Sugawara ,  Fumiya Zaima ,  Atsushi Okoshi ,  Kinji Kato ,  Masato Inari

IPC分类号： C07C45/59 ,  C07D317/12 ,  G03C1/492

CPC分类号： C07D317/12 ,  C07C45/59 ,  Y02P20/55 ,  C07C47/32

摘要： In the production of an alicyclic aldehyde, a starting aromatic aldehyde is converted into an aromatic acetal for protecting the formyl group. The aromatic ring of the aromatic acetal is then hydrogenated to convert the aromatic acetal into an alicyclic acetal, which is then hydrolyzed to cleave the acetal protecting group to obtain the aimed alicyclic aldehyde.

摘要翻译： 在制备脂环醛时，将起始芳族醛转化成芳族缩醛以保护甲酰基。 然后将芳族缩醛的芳环加氢以将芳族缩醛转化为脂环族缩醛，然后将其水解以切割缩醛保护基以获得目标脂环族醛。

公开(公告)号：US6013831A

公开(公告)日：2000-01-11

申请号：US69815

申请日：1998-04-30

申请人： Hiroshi Machida ,  Fumiya Zaima ,  Kengi Nakaya ,  Kazuo Tanaka

发明人： Hiroshi Machida ,  Fumiya Zaima ,  Kengi Nakaya ,  Kazuo Tanaka

IPC分类号： C07C51/265 ,  C07C67/08 ,  C07C67/52 ,  C07C67/48

CPC分类号： C07C67/08 ,  C07C51/265 ,  C07C67/52

摘要： A process for the production of high-purity dimethyl 2,6-naphthalenedicarboxylate, which comprises esterifying 2,6-naphthalenedicarboxylic acid obtained by liquid phase oxidation of 2,6-dialkylnaphthalene with molecular oxygen in the presence of an oxidation catalyst, with methanol and then purifying a crude ester formed by the esterification, the crude ester being purified in the presence of an aromatic hydrocarbon as a solvent, in which impurities contained in a reaction product obtained by the esterification of 2,6-naphthalenedicarboxylic acid prepared by the liquid phase oxidation of 2,6-dialkylnaphthalene are effectively removed with simple procedures, oxidation catalyst metals are recovered, a crystal of naphthalenedicarboxylic acid formed by the oxidation of dialkylnaphthalene and/or its oxide derivative can be easily separated, and the oxidation catalyst to be brought into the step of producing dimethyl naphthalenedicarboxylate is recovered in the process of the production of naphthalenedicarboxylic acid and effectively used in the process of the production of naphthalenedicarboxylic acid.

摘要翻译： 一种制备高纯度2,6-萘二甲酸二甲酯的方法，其包括在氧化催化剂存在下，通过用分子氧将2,6-二烷基萘液相氧化得到的2,6-萘二羧酸与甲醇和 然后纯化通过酯化形成的粗酯，粗酯在作为溶剂的芳族烃存在下纯化，其中通过由液相制备的2,6-萘二甲酸酯化得到的反应产物中所含的杂质 通过简单的方法有效地除去2,6-二烷基萘的氧化，回收氧化催化剂金属，可以容易地分离通过二烷基萘和/或其氧化物衍生物的氧化形成的萘二甲酸的结晶，并将氧化催化剂 在生产n的过程中回收生产二甲基萘二甲酸二甲酯的步骤 邻苯二甲酸二羧酸，有效用于生产萘二羧酸的方法。

公开(公告)号：US5679847A

公开(公告)日：1997-10-21

申请号：US642874

申请日：1996-05-06

申请人： Fumio Ohkoshi ,  Masato Inary ,  Fumiya Zaima

发明人： Fumio Ohkoshi ,  Masato Inary ,  Fumiya Zaima

IPC分类号： B01J31/04 ,  C07B61/00 ,  C07C51/265 ,  C07C63/26 ,  C07C51/16

CPC分类号： C07C51/265 ,  Y02P20/52

摘要： There is disclosed a process for producing terephthalic acid which comprises oxidizing in a liquid-phase a starting raw material comprising p-xylene incorporated with 3 to 35% by weight of p-tolualdehyde based on the same at a temperature in the range of 120.degree. to 240.degree. C. by means of a molecular oxygen-containing gas by using a lower aliphatic monocarboxylic acid as a solvent in the presence of a catalyst comprising a manganese compound having 50 to 1000 ppm by weight of manganese atoms, a cobalt compound having 50 to 2000 ppm by weight of cobalt atoms and a bromine compound having 100 to 4000 ppm by weight of bromine atoms, each based on the solvent. By virtue of the above specific constitution, it is made possible to produce high-quality terephthalic acid with a high residual rate of the lower aliphatic monocarboxylic acid as a solvent minimized in its loss, thereby enabling the production of high-quality polyester with high whiteness from the above terephthalic acid and a glycol.

摘要翻译： 公开了一种生产对苯二甲酸的方法，该方法包括在120℃的温度范围内，在液相中氧化含有3-35重量％的对甲苯甲醛的起始原料，其中包含对二甲苯。 在含有50〜1000ppm重量的锰原子的锰化合物的催化剂存在下，通过使用低级脂肪族一元羧酸作为溶剂，通过含分子氧的气体，将含有氧分子的气体，具有50〜 至2000重量ppm的钴原子和溴化合物，其中溴原子的重量为100-4000ppm。 通过上述具体的构成，可以制造具有高残留率的低级脂族一元羧酸作为溶剂使其损失最小化的高质量对苯二甲酸，从而能够生产高白度的高品质聚酯 由上述对苯二甲酸和二醇组成。

公开(公告)号：US5310944A

公开(公告)日：1994-05-10

申请号：US975444

申请日：1992-01-17

申请人： Takao Kawaki ,  Yuh Miyauchi ,  Toshio Watanabe ,  Katsushige Hayashi ,  Satoshi Ueno ,  Hiroshi Ogawa ,  Fumiya Zaima

发明人： Takao Kawaki ,  Yuh Miyauchi ,  Toshio Watanabe ,  Katsushige Hayashi ,  Satoshi Ueno ,  Hiroshi Ogawa ,  Fumiya Zaima

IPC分类号： C07B41/08 ,  C07B41/12 ,  C07C51/285 ,  C07D315/00 ,  C07D313/04 ,  C07D307/33 ,  C07D309/30

CPC分类号： C07D315/00 ,  C07B41/08 ,  C07B41/12 ,  C07C51/285

摘要： A process for producing a carboxylated compound, which comprises reacting a carbonyl compound with hydrogen peroxide in the presence of an organo-arsenic acid of the formula (1), ##STR1## wherein: R.sup.1 is a C.sub.1 -C.sub.12 alkyl group which may be substituted or an aryl group which may be substituted,R.sup.2 is a hydroxyl group or the same group as that which defines R.sup.1,or alternatively, R.sup.1 and R.sup.2 may bond to each other to form a five-membered or six-membered ring together with As atoms to which these groups are bonded, andthe substituent(s) substituted on the above groups is/are selected from hydroxyl, carboxyl, carbonyl, sulfonyl, sulfonium, an amino group, an ammonium group, an alkyl group, an alkoxyl group and a halogen atom,while a water concentration in a reaction system is maintained at not more than 2% by weight, thereby to form a corresponding carboxylated compound.

摘要翻译： 一种羧化化合物的制备方法，其包括在式（1）的有机砷酸存在下使羰基化合物与过氧化氢反应，其中：R1是C1-C12烷基， 可以被取代，或者可以被取代的芳基，R 2是与定义R 1的羟基或者相同的基团，或者，R 1和R 2可以彼此键合以形成五元或六元环在一起 与这些基团键合的As原子，并且上述取代基的取代基选自羟基，羧基，羰基，磺酰基，锍，氨基，铵基，烷基，烷氧基 基团和卤素原子，而反应体系中的水浓度保持在不超过2重量％，从而形成相应的羧化化合物。

公开(公告)号：US5187311A

公开(公告)日：1993-02-16

申请号：US764503

申请日：1991-09-20

申请人： Mutsuhiko Takeda ,  Isao Hagiwara ,  Fumiya Zaima ,  Shuzabu Sakaguchi

发明人： Mutsuhiko Takeda ,  Isao Hagiwara ,  Fumiya Zaima ,  Shuzabu Sakaguchi

IPC分类号： C07C323/20 ,  C07C381/12 ,  C07F7/18

CPC分类号： C07C381/12 ,  C07C323/20 ,  C07F7/1896 ,  C07C2103/18 ,  C07C2103/74

摘要： Novel methylthiophenol derivatives of the formula (I') and of the formula (IV) and processes for producing said derivatives ##STR1## wherein R is a tert-butyloxy group, a tert-amyloxy group, a p-methoxybenzyloxy group, a 2-(trimethylsilyl)ethoxy group, a 1-adamantyloxy group, a bornyloxy group, or an isobornyloxy group.

摘要翻译： （I'）和式（IV）的新型甲基苯硫酚衍生物及其制备方法，其中R是叔丁氧基，叔戊氧基 ，对甲氧基苄氧基，2-（三甲基甲硅烷基）乙氧基，1-金刚烷氧基，甲酰氧基或异冰片氧基。