RU93046190A - METHOD FOR PRODUCING ISOMERS OF BENZOLEDICARBOXYLIC ACIDS WITH A HIGH PURITY OF PURITY - Google Patents

METHOD FOR PRODUCING ISOMERS OF BENZOLEDICARBOXYLIC ACIDS WITH A HIGH PURITY OF PURITY

Info

Publication number
RU93046190A
RU93046190A RU93046190/04A RU93046190A RU93046190A RU 93046190 A RU93046190 A RU 93046190A RU 93046190/04 A RU93046190/04 A RU 93046190/04A RU 93046190 A RU93046190 A RU 93046190A RU 93046190 A RU93046190 A RU 93046190A
Authority
RU
Russia
Prior art keywords
purity
solvent
oxidation
stage
treated
Prior art date
Application number
RU93046190/04A
Other languages
Russian (ru)
Other versions
RU2047594C1 (en
Inventor
В.Ф. Назимок
Н.Н. Гончарова
В.П. Юрьев
В.Д. Манзуров
Original Assignee
Фирма "Самсунг" Республика Корея
Акционерное общество открытого типа Научно-исследовательский и проектный институт мономеров с опытным заводом
Filing date
Publication date
Application filed by Фирма "Самсунг" Республика Корея, Акционерное общество открытого типа Научно-исследовательский и проектный институт мономеров с опытным заводом filed Critical Фирма "Самсунг" Республика Корея
Priority claimed from RU93046190/04A external-priority patent/RU2047594C1/en
Priority to RU93046190/04A priority Critical patent/RU2047594C1/en
Priority to KR1019930021276A priority patent/KR970000136B1/en
Priority to US08/141,738 priority patent/US5359133A/en
Priority to RO94-01218A priority patent/RO113850B1/en
Priority to ES09450020A priority patent/ES2081265B1/en
Priority to DE4397599T priority patent/DE4397599T1/en
Priority to CA002128719A priority patent/CA2128719C/en
Priority to BR9305996A priority patent/BR9305996A/en
Priority to PCT/KR1993/000106 priority patent/WO1995009143A1/en
Priority to GB9415915A priority patent/GB2286588B/en
Priority to JP6516877A priority patent/JP3009223B2/en
Priority to DE4397599A priority patent/DE4397599C2/en
Priority to SK877-94A priority patent/SK280582B6/en
Priority to PL93308537A priority patent/PL175685B1/en
Priority to AU55763/94A priority patent/AU5576394A/en
Priority to MYPI93002874A priority patent/MY108978A/en
Priority to CN94100679A priority patent/CN1050118C/en
Priority to TW083100473A priority patent/TW307753B/zh
Priority to SA94140587A priority patent/SA94140587B1/en
Priority to BG98919A priority patent/BG62324B1/en
Priority to BE9400702A priority patent/BE1008546A4/en
Priority to ITMI941879A priority patent/IT1271011B/en
Priority to FR9411253A priority patent/FR2710638B1/en
Publication of RU2047594C1 publication Critical patent/RU2047594C1/en
Application granted granted Critical
Publication of RU93046190A publication Critical patent/RU93046190A/en

Links

Claims (1)

Изобретение относится к способу получения изомеров бензолдикарбоновой кислоты с высокой степенью чистоты без стадии очистки методом гидрирования. После первой стадии окисления, состоящей из двух ступеней, осадок отделяют от растворителя и затем обрабатывают возвращаемым в цикл растворителем, затем полученный шлам нагревают до высокой температуры для экстракции примесей, содержащихся в твердом продукте, охлаждают и обрабатывают воздухом и катализаторами на второй стадии окисления. Осадок, полученный на второй стадии окисления, отделяют снова от растворителя и обрабатывают еще раз рециклом - растворителем, затем шлам нагревают до высокой температуры для экстракции, охлаждают и обрабатывают воздухом и катализаторами на третьей стадии окисления. По этому способу получают изомеры бензолдикарбоновой кислоты с высокой степенью чистоты, которые имеют очень низкую концентрацию карбоксибензальдегидов и толуиловых кислот, способ имеет экономические преимущества вследствие небольшой потери растворителя.The invention relates to a method for producing isomers of benzenedicarboxylic acid with a high degree of purity without a purification step by hydrogenation. After the first stage of oxidation, which consists of two stages, the precipitate is separated from the solvent and then treated with a solvent to be recycled, then the resulting slurry is heated to high temperature to extract impurities contained in the solid product, it is cooled and treated with air and catalysts in the second stage of oxidation. The precipitate obtained in the second stage of oxidation is again separated from the solvent and treated again with recycling solvent, then the sludge is heated to a high temperature for extraction, cooled and treated with air and catalysts in the third stage of oxidation. Using this method, high purity isomers of benzenedicarboxylic acid are obtained, which have a very low concentration of carboxybenzaldehydes and toluic acids, the method has economic advantages due to the small loss of solvent.
RU93046190/04A 1993-09-28 1993-09-28 Process for preparing benzenedicarboxylic acid isomers having high purification degree RU2047594C1 (en)

Priority Applications (23)

Application Number Priority Date Filing Date Title
RU93046190/04A RU2047594C1 (en) 1993-09-28 1993-09-28 Process for preparing benzenedicarboxylic acid isomers having high purification degree
KR1019930021276A KR970000136B1 (en) 1993-09-28 1993-10-14 Process for the preparation of high purity benzenedicarboxylic acid isomers
US08/141,738 US5359133A (en) 1993-09-28 1993-10-27 Process for producing highly purified benzenedicarboxylic acid isomers
SK877-94A SK280582B6 (en) 1993-09-28 1993-11-30 Process for producing highly purified benzenedicarboxylic acid isomers
AU55763/94A AU5576394A (en) 1993-09-28 1993-11-30 Production method of high purity isomers of benzenedicarboxylic acids
DE4397599T DE4397599T1 (en) 1993-09-28 1993-11-30 Process for the preparation of high-purity isomers of benzene dicarboxylic acid
CA002128719A CA2128719C (en) 1993-09-28 1993-11-30 Production method of high purity isomers of benzenedicarboxylic acids
BR9305996A BR9305996A (en) 1993-09-28 1993-11-30 Process for the production of isomeres of benzenodicarboxylic acids with high degree of purity
PCT/KR1993/000106 WO1995009143A1 (en) 1993-09-28 1993-11-30 Production method of high purity isomers of benzenedicarboxylic acids
GB9415915A GB2286588B (en) 1993-09-28 1993-11-30 Production method of high purity isomers of benzenedicarboxylic acids
JP6516877A JP3009223B2 (en) 1993-09-28 1993-11-30 Method for producing high-purity benzenedicarboxylic acid isomer
DE4397599A DE4397599C2 (en) 1993-09-28 1993-11-30 Process for the preparation of high-purity isomers of benzene dicarboxylic acid
RO94-01218A RO113850B1 (en) 1993-09-28 1993-11-30 Production method of high purity isomers of benzenedicarboxylic acids
PL93308537A PL175685B1 (en) 1993-09-28 1993-11-30 Method of obtaining highly purified isomers of benzenodicarboxylic acids
ES09450020A ES2081265B1 (en) 1993-09-28 1993-11-30 PRODUCTION PROCEDURE OF HIGH PURITY ISOMERS OF BENZENDICARBOXILIC ACIDS.
MYPI93002874A MY108978A (en) 1993-09-28 1993-12-30 Process for producing highly purified benzenedicarboxylic acid isomers
CN94100679A CN1050118C (en) 1993-09-28 1994-01-12 Process for producing highly purified benzendicarboxylic acid isomers
TW083100473A TW307753B (en) 1993-09-28 1994-01-20
SA94140587A SA94140587B1 (en) 1993-09-28 1994-03-06 Process for producing isomers containing high purity benzenedicarboxylic acid
BG98919A BG62324B1 (en) 1993-09-28 1994-07-20 Method for the preparation of isomers of high purity benzoyldicarbonic acids
BE9400702A BE1008546A4 (en) 1993-09-28 1994-07-26 Production method for high purity isomers with benzenedikarboxylic acid.
ITMI941879A IT1271011B (en) 1993-09-28 1994-09-14 METHOD OF PRODUCTION OF HIGH PURITY BENZENDICARBOXYL ACID ISOMERS
FR9411253A FR2710638B1 (en) 1993-09-28 1994-09-21 Process for the preparation of isomers of high purity benzenedicarboxylic acids.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93046190/04A RU2047594C1 (en) 1993-09-28 1993-09-28 Process for preparing benzenedicarboxylic acid isomers having high purification degree

Publications (2)

Publication Number Publication Date
RU2047594C1 RU2047594C1 (en) 1995-11-10
RU93046190A true RU93046190A (en) 1996-10-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU93046190/04A RU2047594C1 (en) 1993-09-28 1993-09-28 Process for preparing benzenedicarboxylic acid isomers having high purification degree

Country Status (1)

Country Link
RU (1) RU2047594C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996041791A1 (en) * 1995-06-08 1996-12-27 Mogilev Order Of Lenin Proizvodstvennoe Obiedinenie Method of obtaining terephthalic acid of monomeric purity
RU2254324C2 (en) * 2003-07-08 2005-06-20 Общество с ограниченной ответственностью "Научно-исследовательский и производственный центр "ВНИПИМ-ТОС" Continuous method for preparing highly pure terephthalic acid
RU2266277C2 (en) * 2004-01-12 2005-12-20 Общество с ограниченной ответственностью "Научно-исследовательский и производственный центр "ВНИПИМ-ТОС" Method for preparing isophthalic acid of high purity degree

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