RU96115368A - WATER-CONTAINING TOLUYLENEDIAMINE, METHOD FOR PRODUCING TOLUYLENEDIAMINE AND METHOD FOR PRODUCING TOLUYLENE DIOCIANATE - Google Patents

WATER-CONTAINING TOLUYLENEDIAMINE, METHOD FOR PRODUCING TOLUYLENEDIAMINE AND METHOD FOR PRODUCING TOLUYLENE DIOCIANATE

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Publication number
RU96115368A
RU96115368A RU96115368/04A RU96115368A RU96115368A RU 96115368 A RU96115368 A RU 96115368A RU 96115368/04 A RU96115368/04 A RU 96115368/04A RU 96115368 A RU96115368 A RU 96115368A RU 96115368 A RU96115368 A RU 96115368A
Authority
RU
Russia
Prior art keywords
toluene diamine
aqueous
water
producing
toluylenediamine
Prior art date
Application number
RU96115368/04A
Other languages
Russian (ru)
Other versions
RU2202537C2 (en
Inventor
Бискуп Клаус
Кеггенхофф Бертхольд
Original Assignee
Байер Аг
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19528781A external-priority patent/DE19528781A1/en
Application filed by Байер Аг filed Critical Байер Аг
Publication of RU96115368A publication Critical patent/RU96115368A/en
Application granted granted Critical
Publication of RU2202537C2 publication Critical patent/RU2202537C2/en

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Claims (11)

1. Водосодержащий толуилендиамин, отличающийся тем, что он представляет собой смесь толуилендиамина и воды, имеющую максимальную температуру отверждения 95oС.1. Aqueous toluene diamine, characterized in that it is a mixture of toluene diamine and water having a maximum curing temperature of 95 o C. 2. Водосодержащий толуилендиамин по п.1, отличающийся тем, что он имеет температуру отверждения 60 - 90oС.2. The aqueous toluene diamine according to claim 1, characterized in that it has a curing temperature of 60 - 90 o C. 3. Водосодержащий толуилендиамин по п.1, отличающийся тем, что он имеет температуру отверждения 65 - 70oС.3. The aqueous toluene diamine according to claim 1, characterized in that it has a curing temperature of 65 - 70 o C. 4. Водосодержащий толуилендиамин по п.1, отличающийся тем, что он содержит 2,4- и/или 2,6-толуилендиамин. 4. The aqueous toluene diamine according to claim 1, characterized in that it contains 2,4 - and / or 2,6-toluene diamine. 5. Водосодержащий толуилендиамин по пп.1 - 4, отличающийся тем, что он содержит 2,4- и/или 2,6-толуилендиамин в весовом отношении 100:(1-40). 5. Aqueous toluene diamine according to claims 1 to 4, characterized in that it contains 2,4- and / or 2,6-toluene diamine in a weight ratio of 100: (1-40). 6. Водосодержащий толуилендиамин по пп.1 - 4, отличающийся тем, что он содержит 2,4- и/или 2,6-толуилендиамин в весовом отношении 100:(2-10). 6. Aqueous toluene diamine according to claims 1 to 4, characterized in that it contains 2,4- and / or 2,6-toluene diamine in a weight ratio of 100: (2-10). 7. Водосодержащий толуилендиамин по пп.1 - 6, отличающийся тем, что он содержит 2,3- и/или 3,4-изомеры в количестве 0,05 - 5 вес.%. 7. Water-containing toluene diamine according to claims 1 to 6, characterized in that it contains 2,3 - and / or 3,4-isomers in an amount of 0.05 - 5 wt.%. 8. Водосодержащий толуилендиамин по пп.1 - 6, отличающийся тем, что он содержит зависящие от условий получения высокомолекулярные побочные продукты в количестве 0,01 - 2,5 вес.%. 8. Aqueous toluene diamine according to claims 1 to 6, characterized in that it contains high molecular weight by-products in an amount of 0.01 - 2.5% by weight, depending on the production conditions. 9. Способ получения толуилендиамина путем взаимодействия толуола с азотной кислотой, каталитического гидрирования образующегося при этом динитротолуола, отделения применяемого катализатора, отгонки реакционной воды и выделения целевого продукта, отличающийся тем, что отгонку реакционной воды осуществляют до содержания воды 1 - 40 вес.%, предпочтительно 2- 10 вес. %, с последующим отделением водосодержащего толуилендиамина в качестве целевого продукта. 9. A method of producing toluene diamine by reacting toluene with nitric acid, catalytically hydrogenating the dinitrotoluene formed in this process, separating the catalyst used, distilling off the reaction water and isolating the target product, characterized in that the distillation of the reaction water is carried out to a water content of 1-40 wt.%, Preferably 2-10 weight. %, followed by separation of aqueous toluene diamine as the target product. 10. Способ по п.9, отличающийся тем, что процесс осуществляют в присутствии инертного органического растворителя или разбавителя. 10. The method according to claim 9, characterized in that the process is carried out in the presence of an inert organic solvent or diluent. 11. Способ получения толуилендиизоцианата путем фосгенирования толуилендиамина в органическом растворителе и выделения целевого продукта, отличающийся тем, что используют в качестве исходной смесь толуилендиамина и воды, которую перед подачей фосгена удаляют отгонкой под вакуумом. 11. A method of producing toluene diisocyanate by phosgenation of toluene diamine in an organic solvent and isolating the target product, characterized in that a starting mixture of toluene diamine and water is used, which is removed by distillation under vacuum before feeding phosgene.
RU96115368/04A 1995-08-04 1996-08-02 Water-containing tolylenediamine useful for storage or transporting as liquid, method for its preparing and method for preparing tolylene di- isocyanate RU2202537C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19528781.9 1995-08-04
DE19528781A DE19528781A1 (en) 1995-08-04 1995-08-04 Process for the preparation of tolylene diisocyanate, special mixtures of tolylene diamine and water and their use for the preparation of tolylene diisocyanate

Publications (2)

Publication Number Publication Date
RU96115368A true RU96115368A (en) 1998-12-10
RU2202537C2 RU2202537C2 (en) 2003-04-20

Family

ID=7768754

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96115368/04A RU2202537C2 (en) 1995-08-04 1996-08-02 Water-containing tolylenediamine useful for storage or transporting as liquid, method for its preparing and method for preparing tolylene di- isocyanate

Country Status (15)

Country Link
US (2) US5849947A (en)
EP (2) EP0757034B1 (en)
JP (1) JP4095685B2 (en)
KR (1) KR100453862B1 (en)
CN (2) CN1163470C (en)
BR (1) BR9603278A (en)
CA (1) CA2182654A1 (en)
CZ (1) CZ292604B6 (en)
DE (2) DE19528781A1 (en)
ES (1) ES2176380T3 (en)
PL (1) PL184186B1 (en)
PT (1) PT757034E (en)
RU (1) RU2202537C2 (en)
TW (1) TW374080B (en)
UA (1) UA47399C2 (en)

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JP5175033B2 (en) * 2005-03-10 2013-04-03 三井化学株式会社 Polyisocyanate production method and polyisocyanate production apparatus
EP1746083B1 (en) * 2005-07-12 2016-12-21 Covestro Deutschland AG Process for the production of toluylene diamine
DE102005032430A1 (en) * 2005-07-12 2007-01-25 Bayer Materialscience Ag Process for the preparation of toluenediamine
JP4791783B2 (en) * 2005-08-31 2011-10-12 三井化学株式会社 Method for producing polyisocyanate
DE102006022447A1 (en) * 2006-05-13 2007-11-15 Bayer Materialscience Ag Process for the coupled production of chlorine and isocyanates
US8030522B2 (en) * 2006-06-07 2011-10-04 Bayer Materialscience Llc Process for the production of toluene diisocyanate
CN100455559C (en) * 2006-11-08 2009-01-28 大连理工大学 Method for reduced preparation of arylamine from aromatic nitro compound
DE102006059678A1 (en) * 2006-12-18 2008-06-19 Bayer Materialscience Ag Preparing and distillatively purifying aromatic amine comprises hydrogenating corresponding aromatic nitro compounds in the presence of catalyst and distillatively separating water from the formed reaction mixture of amine and water
DE102006060572A1 (en) † 2006-12-19 2008-06-26 Bayer Materialscience Ag Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes
KR101531731B1 (en) * 2007-11-27 2015-06-25 미쓰이 가가쿠 가부시키가이샤 Method of dehydrating tolylenediamine and dehydrator
PL2367783T3 (en) 2008-11-19 2013-06-28 Basf Se Method for producing an isocyanate
CN101712621B (en) * 2009-09-02 2012-10-31 甘肃银达化工有限公司 Method for continuously preparing toluenediamine
CN101671277B (en) * 2009-09-18 2011-12-28 天津大学 Method for recovering heat integrated solvent in continuous production of toluene di-isocyanate
KR101797255B1 (en) * 2010-03-18 2017-11-13 헌트스만 인터내셔날, 엘엘씨 Process for the conversion of aromatic nitro compound into amines
JP5883661B2 (en) * 2012-01-25 2016-03-15 旭化成ケミカルズ株式会社 Method for producing N-substituted carbamic acid ester
US11078151B2 (en) 2017-01-27 2021-08-03 Covestro Llc Process for the preparation of stable toluene diamine residue/water blends, related compositions, and methods of using such blends as a fuel
CN110105248B (en) * 2019-05-31 2021-07-20 上海应用技术大学 Preparation method of toluene diisocyanate
EP4151619A1 (en) 2021-09-20 2023-03-22 Covestro Deutschland AG Method for the removal of water from and transport of aliphatic diamines

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