阅读说明：本技术 一种新型肺腔通气液的制备方法 (Preparation method of novel lung cavity ventilation liquid ) 是由 鲁俞 方治文 于 2019-08-20 设计创作，主要内容包括：本发明提供一种肺腔通气液的制备方法,包括以下步骤：(1)在反应器内加入SbF<Sub>3</Sub>,加热使反应器温度达到376～500℃；(2)取萘溶于盛有四氢化萘的蒸发器中,将蒸发器加热使溶液蒸发后以气态形式加入反应器内,反应产物收集于粗品容器中；(3)加料完毕后将所述粗品容器内收集物经洗涤、干燥得粗产品；(4)将所述粗产品再进行分子精馏纯化,最后得到精制全氟萘烷；(5)用气相色谱分析所述全氟萘烷。本发明提供的肺腔通气液的制备方法操作简单,反应条件易于控制,制得的产物产率高,纯度高,副产物少,反应产物容易分离提纯,且生产过程无三废排放,适于规模化连续化生产。(the invention provides a preparation method of lung cavity ventilation liquid, which comprises the following steps of (1) adding SbF 3 into a reactor, heating to enable the temperature of the reactor to reach 376-500 ℃, dissolving naphthalene into an evaporator containing tetralin, heating the evaporator to enable the solution to be evaporated, adding the solution into the reactor in a gaseous state, collecting reaction products into a crude product container, (3) washing and drying the collected products in the crude product container after the addition is finished to obtain crude products, (4) performing molecular rectification and purification on the crude products to obtain refined perfluorodecalin, and (5) analyzing the perfluorodecalin by gas chromatography.)

1. a preparation method of lung cavity ventilation liquid is characterized by comprising the following steps:

Adding SbF ₃ into the reactor, and heating to ensure that the temperature of the reactor reaches 376-500 ℃;

dissolving naphthalene in an evaporator containing tetralin, heating the evaporator to evaporate the solution, adding the evaporated solution into a reactor in a gaseous state, and collecting a reaction product in a crude product container;

after the material is added, washing and drying the collected materials in the crude product container to obtain a crude product;

and (3) performing molecular rectification and purification on the crude product to finally obtain the refined perfluorodecalin.

2. the method for preparing the lung cavity ventilation liquid as claimed in claim 1, wherein the step (1) comprises filling a catalyst Co ₂ O ₃ in the reactor.

3. the method for preparing the lung cavity ventilation liquid as claimed in claim 2, wherein the catalyst Co ₂ O ₃ is a spherical solid with a diameter of 0.1 ~ 1mm, and the catalyst is stacked in the middle and lower part of the reactor.

4. the method of claim 1, wherein the lung ventilation solution is non-acidic in gas phase for 24 hours, and the hydrogen-containing impurities of the lung ventilation solution are less than 8 ppm.

5. the method for preparing lung ventilation solution according to claim 1 or 2, wherein the specific gravity of perfluorodecalin is 2 times that of water, and the oxygen carrying capacity of perfluorodecalin is 2.5 ~ 4 times that of erythrocytes.

6. the method of claim 1, wherein the perfluorodecalin has a surface tension of one tenth to one third of that of water.

7. The method for preparing lung cavity ventilation solution according to claim 1, wherein the adding time of step (2) is 5 ~ 60 seconds.

8. the method for preparing lung cavity ventilation solution according to claim 1, wherein the charging molar ratio of naphthalene to tetralin in step (2) is 1:1 ~ 1: 2.

9. the method of claim 1, wherein the molar ratio of SbF ₃ to naphthalene added is 10:1 ~ 20: 1.

10. The method of claim 1, wherein the perfluorodecalin chemical synthesis and purification process is preferably performed in a completely enclosed apparatus.

Technical Field

the invention relates to the technical field of new medical materials, in particular to a preparation method of lung cavity ventilation liquid.

Background

at present, the method for treating and rescuing the acute respiratory distress syndrome caused by various diseases in domestic clinic basically applies mechanical ventilation modes such as non-positive expiratory pressure, collateral pulmonary ventilation, inverse ratio ventilation and the like, and can not directly improve the lung physiological state of the acute respiratory distress syndrome, such as factors causing the respiratory distress syndrome caused by trauma, infection, hematological disorder, pathological obstetrical diseases, postoperative, metabolic disorder, treatment, special examination, medicine, aspiration, gas inhalation and the like.

the prior preparation methods of perfluoroalkane include cobalt trifluoride fluorination, electrolytic fluorination and elemental fluorine direct fluorination. The cobalt trifluoride fluorination method comprises the steps of reacting cobalt difluoride or cobalt oxide with fluorine gas in advance to convert the cobalt trifluoride into cobalt trifluoride, and reacting the cobalt trifluoride with alkane in a reactor to obtain a mixture containing perfluoroalkane; the cobalt trifluoride needs to be regenerated continuously, the temperature of the reactor is difficult to control uniformly, the amplification is limited, the production cannot be carried out continuously, and the method is not suitable for mass production. The electrolytic fluorination method for synthesizing perfluorooctane has the disadvantages of complex equipment, high difficulty in condition control, many byproducts and low yield which is generally not more than 20%. Elemental fluorine is needed in the direct fluorination method of elemental fluorine, the transportation of the elemental fluorine is very difficult, the on-site fluorine preparation equipment is complex, the operation difficulty is high, the chain scission of reactants is easy to cause a plurality of byproducts, and the yield is not high; and fluorine gas production is regulated and controlled by strict regulations, and production permission is not easily obtained.

Therefore, a safe and efficient perfluorooctane preparation method needs to be researched, and the scale is flexible and the production is easy to realize.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a safe and efficient preparation method of perfluoroalkane, which can realize flexible scale and easy production.

in order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a preparation method of lung cavity ventilation liquid, aiming at overcoming the defects, the method is suitable for large-scale continuous production, the reaction condition is easy to control, the yield is high, the byproducts are less, the reaction product is easy to separate and purify, and the production process has no three-waste discharge, and comprises the following steps:

(1) adding SbF ₃ into the reactor, and heating to ensure that the temperature of the reactor reaches 376-500 ℃;

(2) dissolving naphthalene in an evaporator containing tetralin, heating the evaporator to evaporate the solution, adding the evaporated solution into a reactor in a gaseous state, and collecting a reaction product in a crude product container;

(3) After the material is added, washing and drying the collected materials in the crude product container to obtain a crude product;

(4) performing molecular rectification and purification on the crude product to finally obtain refined perfluorodecalin;

(5) the perfluorodecalin was analyzed by gas chromatography.

preferably, the step (1) comprises filling a catalyst Co ₂ O ₃ in the reactor.

Preferably, the catalyst Co ₂ O ₃ is spherical solid with the diameter of 0.1 ~ 1mm, and the catalyst is stacked in the middle and lower part of the reactor.

preferably, the lung cavity ventilation liquid has no acidity in gas phase for 24 hours, and the hydrogen-containing impurities of the lung cavity ventilation liquid are less than 8 ppm, and more preferably less than 5 ppm.

Preferably, the refractive index of the lung cavity ventilation liquid is 1.2-1.4, and further preferably 1.309.

preferably, the specific gravity of the perfluorodecalin is 2 times that of water, and the oxygen carrying capacity of the decalin is 2.5 ~ 4 times that of red blood cells.

Preferably, the perfluorodecalin has a surface tension of one tenth to one third of that of water, and more preferably a surface tension of one quarter of that of water.

Preferably, the adding time of step (2) in the preparation method of the lung cavity ventilation liquid is 5 ~ 60 seconds.

Preferably, in the step (2) of the preparation method of the lung cavity ventilation liquid, the charging molar ratio of naphthalene to tetralin is 1:1 ~ 1: 2.

preferably, the charged molar ratio of SbF ₃ to naphthalene is 10:1 ~ 20: 1.

Preferably, the chemical synthesis and purification process of perfluorodecalin is preferably prepared in a completely enclosed apparatus.

Preferably, the raw materials of the lung cavity ventilation liquid comprise naphthalene, tetralin, decalin, potassium bifluoride, nitrogen and hydrogen fluoride.

The beneficial effects brought by the invention are as follows:

1. the invention overcomes the technical difficulty of the two-step synthesis method in the prior art, replaces the preparation method of the lung cavity ventilation liquid with the one-step synthesis method, can complete the reaction only by one reactor, and has high efficiency and simple process;

2. the method adopts SbF ₃ as a fluorinating agent, and simultaneously adopts spherical Co ₂ O ₃ with the diameter of 0.1 ~ 0.3.3 mm as a catalyst, so that the purity and the yield of perfluorodecalin are improved under the combined action of the SbF ₃ and the catalyst;

3. The charging molar ratio of SbF ₃ to naphthalene is 10:1 ~ 20:1, so that the purity of perfluorodecalin is further improved and reaches more than 98%.

Drawings

FIG. 1 is a flow chart of the production process of the present invention.

Detailed Description

the following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.

the lung cavity ventilation liquid is a fluorocarbon compound, the fluorocarbon compound is various in types, and the purification methods of the synthesis processes are different. The perfluorodecalin of the invention has no acidity in gas phase for 24 hours, and the hydrogen-containing impurities of the lung cavity ventilation liquid are less than 5 ppm and have different properties with other perfluorodecalin.

The reactor of the invention can be a tubular reactor, and the material can be Monel, nickel, stainless steel, red copper or carbon steel, etc. The tube is filled with alkali metal, alkaline earth metal oxide, alkaline earth metal fluoride, nickel and fluoride thereof, cobalt and fluoride thereof, copper and fluoride thereof, aluminum and fluoride thereof, manganese and fluoride thereof, if the starting filler is not completely fluoride, it is necessary to perform fluorination with fluorine gas or a mixed gas of fluorine before the reactants are introduced for reaction to completely convert the filler into fluoride.

The main raw material of the lung cavity ventilation liquid is perfluorodecalin, and antimony trifluoride is heated at a certain temperature and then is prepared into novel perfluorodecalin with naphthalene and tetralin by a one-step method, wherein the reaction process of the novel preparation is as follows:

the chemicals and equipment used in the following examples and comparative examples are as follows:

1. antimony trifluoride, available from Shanghai Allantin Biotechnology, Inc.

2. naphthalene, available from Shanghai Aladdin Biotechnology Ltd.

3. Tetralin was purchased from tokyo chemical industries co.

GC purity test instrument: agilent, column: DB-5, FID detector, carrier gas: nitrogen (10mL/min), split ratio 10:1, sample introduction amount: 20 ul.