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3,3',4,4'-biphenyl tetraformyl tetraoctylamine, and preparation method and application thereof

A technology of biphenyl tetracarboxyl tetraoctylamine and biphenyl tetracarboxylic acid, which is applied in the field of 3,3′,4,4′-biphenyltetracarboxyl tetraoctylamine and its preparation, can solve the problem of unfriendly environment, Poor viscosity-increasing performance, large amount of addition, etc., to achieve the effect of ensuring purity and yield, low production cost, and strong viscosity-increasing ability

Pending Publication Date: 2020-09-18
新岸诺亚(北京)催化科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned analysis, the present invention aims to provide 3,3',4,4'-biphenyltetraformyltetraoctylamine and its preparation method, in order to solve the problem of existing thickening agent with large addition amount and poor viscosity-increasing performance. , unfriendly to the environment and high cost

Method used

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  • 3,3',4,4'-biphenyl tetraformyl tetraoctylamine, and preparation method and application thereof
  • 3,3',4,4'-biphenyl tetraformyl tetraoctylamine, and preparation method and application thereof
  • 3,3',4,4'-biphenyl tetraformyl tetraoctylamine, and preparation method and application thereof

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preparation example Construction

[0053]A specific embodiment discloses the preparation method of 3,3',4,4'-biphenyltetraformyltetraoctylamine (hereinafter referred to as method one), such as figure 2 shown, including the following steps:

[0054] Step 11: adding solvent and n-octylamine to the reaction vessel;

[0055] Step 12: Add 3,3′,4,4′-biphenyltetracarboxylic dianhydride to react, the reaction temperature is 80-150°C, and the reaction time is 5-15h; the reaction process is shown in 2;

[0056] Step 13: cooling to 30-50°C, adding a precipitation agent to precipitate the product;

[0057] Step 14: Cool to 20-40° C., and filter with suction to obtain 3,3′,4,4′-biphenyltetracarboxyltetraoctylamide.

[0058] In the invention, by optimizing the reaction conditions, the purity of the prepared product is greater than 98%, the yield is as high as 95.6%, and the viscosity-increasing performance is good, and the product quality is stable. Compared with the existing thickener phosphoric acid ester, the viscosit...

Embodiment 1

[0082] In this example, 3,3′,4,4′-biphenyltetracarboxyltetraoctylamide was prepared by method one.

[0083] Put 400 grams of DMF and 250 grams of n-octylamine into a 2-liter four-neck glass flask. Slowly add 60 grams of 3,3',4,4'-biphenyltetracarboxylic dianhydride with stirring, stir at 120°C for 8 hours after the addition, cool to 50°C, add 600 grams of methanol dropwise, and a large amount of solids precipitate out. Cool to 30°C, filter with suction, wash the filter cake with 100 mL of methanol, and dry to obtain 155 grams of solid, with a product purity of 99% and a yield of 95.6%.

Embodiment 2

[0085] In this example, 3,3′,4,4′-biphenyltetracarboxyltetraoctylamide was prepared by method one.

[0086] 350 grams of DMF and 207 grams of n-octylamine were put into a 2-liter four-neck glass flask. Slowly add 60 grams of 3,3',4,4'-biphenyltetracarboxylic dianhydride with stirring, stir at 150°C for 5 hours after the addition, cool to 30°C, add 400 grams of methanol dropwise, and a large amount of solids precipitate out. Cool to 30°C, filter with suction, wash the filter cake with 100mL of methanol, and dry to obtain 150g of solid with a product purity of 98% and a yield of 92.5%.

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Abstract

The invention relates to a 3,3',4,4'-biphenyl tetraformyl tetraoctylamine, and a preparation method and application thereof, belongs to the technical field of chemical synthesis, and solves the problems that an existing thickening agent is large in addition amount, poor in tackifying performance, unfriendly to the environment and high in cost. Preparation raw materials of the 3,3',4,4'-biphenyl tetracarboxylic acid tetraoctylamine comprise 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride and n-octylamine, and the molar ratio of the n-octylamine to the 3,3',4,4'-biphenyl tetracarboxylic aciddianhydride is (8-15): 1. The preparation method comprises the following steps: 1, adding a solvent and n-octylamine into a reaction vessel; 2, adding 3,3',4,4'-biphenyl tetracarboxylic dianhydride,and carrying out a reaction; 3, cooling, and adding a precipitating agent to precipitate the product; and 4, cooling, and carrying out suction filtration to obtain the 3,3',4,4'-biphenyl tetraformyl tetraoctylamine. Low-content addition of a thickening agent is realized, and the preparation method is environment-friendly and low in cost.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular to 3,3',4,4'-biphenyltetracarboxyltetraoctylamine and its preparation method and application. Background technique [0002] Fracturing fluid refers to a heterogeneous and unstable chemical system formed by various additives in a certain ratio. It is a working fluid used in fracturing oil and gas reservoirs. Its main function is to transmit the high pressure formed by ground equipment. into the formation, fractures the formation to form fractures and transports proppant along the fractures. [0003] Oil-based fracturing fluid is a fracturing fluid formed by adding various additives to oil as a solvent or dispersion medium. At present, the more common one is the reactant of aluminum phosphate and alkali, which is the pentoxide of organic fatty acid alcohol and inorganic non-metallic oxide. Phosphate ester generated by diphosphorus is evenly mixed into the base oil, and cro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C231/02C07C231/24C07C233/65
CPCC07C231/02C07C231/24C07C233/65
Inventor 胡海峰肖恩·梅舍约翰·海克曼时金彪项业专刘琳苗慧
Owner 新岸诺亚(北京)催化科技有限公司
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