SU80533A1 - The method of obtaining diphenyl-para-phenylenediamine - Google Patents

The method of obtaining diphenyl-para-phenylenediamine

Info

Publication number
SU80533A1
SU80533A1 SU388237A SU388237A SU80533A1 SU 80533 A1 SU80533 A1 SU 80533A1 SU 388237 A SU388237 A SU 388237A SU 388237 A SU388237 A SU 388237A SU 80533 A1 SU80533 A1 SU 80533A1
Authority
SU
USSR - Soviet Union
Prior art keywords
para
phenylenediamine
diphenyl
reaction
aniline
Prior art date
Application number
SU388237A
Other languages
Russian (ru)
Inventor
В.П. Комарова
В.Н. Уфимцев
М.И. Черняк
к М.И. Черн
Е.Л. Щербухина
Original Assignee
В.П. Комарова
В.Н. Уфимцев
М.И. Черняк
к М.И. Черн
Е.Л. Щербухина
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
Application filed by В.П. Комарова, В.Н. Уфимцев, М.И. Черняк, к М.И. Черн, Е.Л. Щербухина filed Critical В.П. Комарова
Priority to SU388237A priority Critical patent/SU80533A1/en
Application granted granted Critical
Publication of SU80533A1 publication Critical patent/SU80533A1/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Дифенил-пара-фенилендиамин  вл етс  важным актиоксидантом дл  резины и жидкого топлива и получаетс  конденсацией гидрохинона или пара-амннофенола с анилином.Diphenyl-para-phenylenediamine is an important antioxidant for rubber and liquid fuels and is obtained by the condensation of hydroquinone or para-amnophenol with aniline.

Реакцию конденсации ведут обыч. ио нагреванием смеси гидрохинона или пара-аминофенола с анилином в присутствии катализаторов (А1С1з, ZnClz и т. п.) либо при нормальном давлен1ии с отгонкой образующейс  при реакции воды, под давлением без ютгонки воды. В обоих случа х ВЫХОДЫ дифенил-шарлнфеШ1лендиаМ -;на невелики, так как реакци  не доходит до конца, частично останавлива сь иа стадии обр азов аг I :  п а;р а -о ксидифен кл ам и« а.The reaction of condensation lead ordinary. by heating a mixture of hydroquinone or para-aminophenol with aniline in the presence of catalysts (A1Cl3, ZnClz, etc.) or under normal pressure with distillation of water formed during the reaction, under pressure without distillation of water. In both cases, the OUTPUTS of biphenyl – Sharfennemidiam– are not large, since the reaction does not reach the end, partially stopped at the stage of the process ar I: pa and p a – o xydifene cells and aa.

Согласно изобретению можно повысить выходы дифенил-пара-фгнилендиамина до 80-90% и избежать образовани  пара-оксидифениламмна , если вести процесс под небольплим давлением (I-3 аг) с одновременной отгонкой воды и аммиака вместе с анилином.According to the invention, it is possible to increase the yields of diphenyl-para-phylenylene diamine to 80-90% and to avoid the formation of para-oxydiphenylamine by running the process under low pressure (I-3 ag) with simultaneous distillation of water and ammonia together with aniline.

Пример 1. В аВтоклав загружают 220 г гидрохинона, 900 г анилина и 25 г плавленого хлористого цинка.Example 1. 220 g of hydroquinone, 900 g of aniline and 25 g of fused zinc chloride are charged into an autoclave.

Реакционную массу нагревают до температуры 220-240° С в течение 20 час.; при этом давление в автоклаве поддерживают около 1-2 ат Отв. редактор М. М. АкишинThe reaction mass is heated to a temperature of 220-240 ° C for 20 hours; at the same time, the pressure in the autoclave is maintained at about 1-2 at. editor M. M. Akishin

и одновременно отгон ют образующуюс  в результате реакции воду вместе с частью айили.на и 1К|Онденсируют в холодильнике. Полученный дифенил-пара-фенилендиамин выдел рот обычным способом; выход 80-90% от теории.and at the same time, the water formed as a result of the reaction is distilled off along with a part of the ayil. The resulting diphenyl-para-phenylenediamine mouth drain in the usual way; yield 80-90% of theory.

Пример 2. В автоклав загружают 218 г пара-аминофенола, 600 г анилина и 25 г хлористого аммони . Реакционную массу нагревают до температуры 200-220° С в течение 10 час. При этом давление в автоклаве поддерживают около .0,8- 1,5 ат и одновременно отгон ют образующиес  в результате реакции аммиак и воду вместе с анилином и конденсируют в холодильнике. Пэ окончании реакции полученный дифенил-пара-фенилендиамин выдел ют обычным способом; выход 75-90% от теории.Example 2. In the autoclave load 218 g of para-aminophenol, 600 g of aniline and 25 g of ammonium chloride. The reaction mass is heated to a temperature of 200-220 ° C for 10 hours. At the same time, the pressure in the autoclave is maintained at about .0.8-1.5 at. At the same time, the ammonia and water formed as a result of the reaction are distilled off along with aniline and condensed in a refrigerator. At the end of the reaction, the resulting diphenyl-para-phenylenediamine is isolated in the usual way; yield 75-90% of theory.

Предмет изобретени  Способ получени  дифенил-парафенилендиамина путем нагревани  гидрохинона или пара-аминофенола с анилином в присутствии конденсирующих средств, о т л и ч а уощ и и с   тем, что процесс ведут под давлением с одновременной отгонкой воды, образующейс  в реззльтате реакции.The subject of the invention is a process for the preparation of diphenyl-paraphenylenediamine by heating hydroquinone or para-aminophenol with aniline in the presence of condensing agents, in a manner that the process is carried out under pressure with simultaneous distillation of water formed in the reaction.

Реактор А. Е, НикитскийReactor A. E, Nikitsky

267267

SU388237A 1948-12-06 1948-12-06 The method of obtaining diphenyl-para-phenylenediamine SU80533A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU388237A SU80533A1 (en) 1948-12-06 1948-12-06 The method of obtaining diphenyl-para-phenylenediamine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU388237A SU80533A1 (en) 1948-12-06 1948-12-06 The method of obtaining diphenyl-para-phenylenediamine

Publications (1)

Publication Number Publication Date
SU80533A1 true SU80533A1 (en) 1949-11-30

Family

ID=48254180

Family Applications (1)

Application Number Title Priority Date Filing Date
SU388237A SU80533A1 (en) 1948-12-06 1948-12-06 The method of obtaining diphenyl-para-phenylenediamine

Country Status (1)

Country Link
SU (1) SU80533A1 (en)

Similar Documents

Publication Publication Date Title
Tsuge et al. Water-induced formation of azomethine ylide 1, 3-dipole. Stereospecific and regioselective cycloaddition reactions.
SU80533A1 (en) The method of obtaining diphenyl-para-phenylenediamine
Parris et al. N-Alkylation of Nitriles with Benzyl Alcohol, Related Alcohols, and Glycols1
US2382085A (en) Synthesis of vitamin a
Whyte et al. The Rearrangement of Allyl Groups in Three-Carbon Systems. III. Nitriles and an Acid
US2819307A (en) Preparation of n-tert-butyl formamide
US2623882A (en) Process for the manufacture of addition products of hydrocyanic acid and acrylic acid nitrile
Vliet Preparation and Hydrolysis of Substituted Cyanamides: DI-N-Butylcyanamide and Diallylcyanamide
NO151460B (en) METHOD AND PREPARATION OF 2-FLUORATED METHYLAMINOACETONITRILS.
SMOLIN Reactions of cyanogen chloride. II. Amines from cyanogen chloride and olefins
US4154757A (en) Process for the manufacture of p-hydroxybenzyl cyanide
Gaudry Study on the synthesis of valine by the Strecker method
Cloke et al. 1-α-Naphthylcyclopropanecarbonitrile and Some of its Derivatives1
Igarashi et al. Syntheses of α-Keto Amides and Acids from Ethyl Alkylidenecyanoacetates1
Sudo et al. Reactions of alicyclic aminonitrile
Eldred et al. Dichlorofumaric Acid
Sudo et al. Synthesis of 1-aminocyclobutanecarboxylic acid
US2451857A (en) Separation of capryl alcohol from methyl hexyl ketone by alkali treatment and distillation
US2819306A (en) Preparation of formamides by reacting hydrogen cyanide with cyclohexene
US2765320A (en) Preparation of 2, 3-dimethylindole
US4045479A (en) Process of preparing penicillamine
US2717253A (en) Preparation of methionine hydantoin
SU76388A1 (en) The method of producing nitriles
US2916498A (en) J-aryl-j-alkyl-z-pyrrolidones
SU78376A1 (en) The method of obtaining dinitrile succinic acid