SU68438A1 - The method of obtaining chrome tanning extract - Google Patents

The method of obtaining chrome tanning extract

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Publication number
SU68438A1
SU68438A1 SU4686A SU344393A SU68438A1 SU 68438 A1 SU68438 A1 SU 68438A1 SU 4686 A SU4686 A SU 4686A SU 344393 A SU344393 A SU 344393A SU 68438 A1 SU68438 A1 SU 68438A1
Authority
SU
USSR - Soviet Union
Prior art keywords
extract
chrome tanning
tanning extract
parts
obtaining
Prior art date
Application number
SU4686A
Other languages
Russian (ru)
Inventor
М.Ш. Овруцкий
Original Assignee
М.Ш. Овруцкий
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 М.Ш. Овруцкий filed Critical М.Ш. Овруцкий
Priority to SU4686A priority Critical patent/SU68438A1/en
Application granted granted Critical
Publication of SU68438A1 publication Critical patent/SU68438A1/en

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Description

По литературным данньш, в последнее врем  при дублении хромовых товаров в качестве реагента примен ют фталевую кислоту. Применение ее дает следующие преимущества: отпадает необходимость пикелевани  голь , вследствие чего процесс дублени  значительно ускор етс ; достигаетс  лучшее поглощение окиси хрома , кожа получаетс  с шелковистой мереей, полна , с хорошим грифом и т. д.According to the literature, phthalic acid has recently been used as a reagent in tanning chrome products. Its application gives the following advantages: there is no need for pickling an ember, as a result of which the tanning process is significantly accelerated; the best absorption of chromium oxide is achieved, the skin is obtained with a silky skin, is full, with a good neck, etc.

Исход  из того, что при окислении нафталина хромпиком образуетс  фталева  кислота, насто щим изобретением предлагаетс  примен ть нафталин в качестве восстановител  дл  получени  экстрактов, содержащих фталевую кислоту в качестве реагента .Based on the fact that phthalic acid is formed during the oxidation of naphthalene with a chromium peak, the present invention proposes to use naphthalene as a reducing agent to obtain extracts containing phthalic acid as a reactant.

Дл  приготовлени  хромового экстракта 100 частей хромпика раствор ют в 100 част х воды и добавл ют 45 частей серной кислоты (в пересчете на 100°).To prepare the chromic extract, 100 parts of the chromic is dissolved in 100 parts of water and 45 parts of sulfuric acid (based on 100 °) are added.

К 15 част л нафталина прибавл ют 75 частей серной кислоты (в пересчете на 100°) и 50 частей воды, нагревают до 80° С и при частом75 parts of sulfuric acid (based on 100 °) and 50 parts of water are added to 15 parts of naphthalene, heated to 80 ° C and with frequent

перемешивании поддерживают эту температуру в течение четырех часов, Не дава  массе остыть, добавл ют к ней раствор хромпика. Добавл ть хромпик нужно, медленно поддержива  равномерное кипение раствора и не допуска  ослаблени  реакции к концу процесса.stirring this temperature is maintained for four hours. Without allowing the mass to cool, a solution of bromine is added to it. Chromium should be added, slowly maintaining uniform boiling of the solution and not allowing the reaction to weaken by the end of the process.

После анализа экстракта добавлением кальцинированной соды повышают его основность до 30° по Шорлеммеру .After analyzing the extract by adding soda ash, its basicity is increased to 30 ° Schorlemer.

Методика дублени  козлины приготовленным экстрактом состоит в следующем .The method of tanning goats by the prepared extract is as follows.

Отмочно-зольные операции, включа  м гчение, производ т по типовой методике (обеззоливание должно быть полное).Mark-ash operations, including milling, are carried out according to a standard procedure (desalination must be complete).

После м гчени  и фасонировани  даетс  промывка ЖК 1:2, температура 25° С, продолжительность 15 минут.After softening and shaping, a 1: 2 washing with a LCD is performed, the temperature is 25 ° C, the duration is 15 minutes.

Дубление при ЖК 0,8, экстракт даетс  из расчета 1,8% окиси хрома от веса голь . Основность экстракта 30° по Шорлеммеру. Экстракт даетс  в один прие.м (поваренна  соль не примен етс ). Дубление продолжает277Tanning at LCD 0.8, the extract is given at the rate of 1.8% chromium oxide by weight mole. The basicity of the extract is 30 ° Shorlemeru. The extract is given at one time (salt not used). Tanning continues277

№ 68438 -2 -No. 68438 -2 -

с  2-3 часа. Остальные процессыдинени  производных нафталина, о тпроизвод тс  по типовой методике,ли чающийс  тем, что нафталинfrom 2-3 hours. The rest of the processes of naphthalene derivative production are carried out according to a standard procedure, in that naphthalene

смешивают с крепкой серной кислоПредмет изобретени той и оставл ют примерно на 3Способ получени  хромового ду-4 часа, после чего в смесь добавл ют mixed with strong sulfuric acid; subject of the invention and left for about 3 hours. The method of producing chromium for 4 hours, after which the mixture is added

бального экстракта содержащего сое-раствор хромпика в серной кислоте.Ball extract containing soy-solution of chromic in sulfuric acid.

SU4686A 1946-03-26 1946-03-26 The method of obtaining chrome tanning extract SU68438A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU4686A SU68438A1 (en) 1946-03-26 1946-03-26 The method of obtaining chrome tanning extract

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU4686A SU68438A1 (en) 1946-03-26 1946-03-26 The method of obtaining chrome tanning extract

Publications (1)

Publication Number Publication Date
SU68438A1 true SU68438A1 (en) 1946-11-30

Family

ID=48247446

Family Applications (1)

Application Number Title Priority Date Filing Date
SU4686A SU68438A1 (en) 1946-03-26 1946-03-26 The method of obtaining chrome tanning extract

Country Status (1)

Country Link
SU (1) SU68438A1 (en)

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