Fluorotriptycene tetracarboxylic dianhydride compound and preparation method thereof, polyimide and preparation method thereof

A technology of fluorotriptycene tetracarboxylic acid and pterylene tetracarboxylic acid, which is applied in the field of fluorotriptycene tetracarboxylic dianhydride compound and its preparation, polyimide and its preparation, can solve the problem of lack of species, and achieve The effects of high thermal weight loss temperature, high yield, and cheap and easy-to-obtain raw materials

Inactive Publication Date: 2019-03-29
HUAQIAO UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

How to improve the deficiencies in the application of polyimides and overcome the difficulties in the

Method used

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  • Fluorotriptycene tetracarboxylic dianhydride compound and preparation method thereof, polyimide and preparation method thereof
  • Fluorotriptycene tetracarboxylic dianhydride compound and preparation method thereof, polyimide and preparation method thereof
  • Fluorotriptycene tetracarboxylic dianhydride compound and preparation method thereof, polyimide and preparation method thereof

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preparation example Construction

[0053] The preparation method of fluorotriptycene tetracarboxylic dianhydride compound comprises the following synthetic steps

[0054] Step 1, synthesis of fluorotetramethyl triptycene

[0055] Dissolve fluorinated anthranilic acid and isoamyl nitrite in diethylene glycol dimethyl ether and 1,2-dichloroethane respectively, add 2,3,6,7-tetramethylanthracene in 1,2-dichloroethane;

[0056] After the reaction, distill off the solvent, add maleic anhydride, heat to reflux, add NaOH-ethanol aqueous solution after cooling, heat to reflux, stand still, filter with suction, take the solid, dry it, pass it through the column for purification, and spin evaporate to obtain a white powder shaped solid, dried to obtain fluorotetramethyl triptycene;

[0057] Step 2, synthesis of fluorotriptycene tetracarboxylic acid

[0058] Dissolve the fluorotetramethyltriptycene prepared in step 1 in a mixed solvent of pyridine and water and heat and stir under the action of potassium permanganate to...

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Abstract

The invention relates to the field of functional polymer materials, especially to a fluorotriptycene tetracarboxylic dianhydride compound and a preparation method thereof, polyimide and a preparationmethod thereof. The preparation method of the fluorotriptycene tetracarboxylic dianhydride compound comprises the following steps: preparing fluorotetramethyltriptycene by using tetramethylanthraceneand fluoroanthranilic acid; then preparing fluorotriptycene tetracarboxylic acid under the action of potassium permanganate; and finally carrying out a solvothermal reaction under the condition of using acetic acid as a solvent to generate the fluorotriptycene tetracarboxylic dianhydride. The invention also provides polyimide prepared on the basis of the fluorotriptycene tetracarboxylic dianhydride. The novel polyimide polymer material prepared by using dianhydride can be widely applied to passivation of chip surface and encapsulating materials, alpha-particle shielding materials, multi-layerwiring interlayer insulating materials and photoresist materials used for drawing and through holes, and flexible printed circuit boards and other basis materials. The prepared film is almost colorless and transparent, has good heat stability, and is greatly improved in the aspects of optical and thermodynamic properties.

Description

technical field [0001] The invention relates to the preparation of dianhydride in the field of functional polymer materials, in particular to a fluorinated triptycene tetracarboxylic dianhydride compound and a preparation method thereof, and a polyimide and a preparation method thereof. Background technique [0002] Polyimide is a high-performance polymer with excellent properties. Due to its outstanding comprehensive properties, it is widely used in aerospace, high-performance fibers, dielectric materials, membrane separation, and liquid crystal displays. However, due to the high cost of synthesis of dianhydride monomers and the disadvantages of difficult processing and color of the polymer, its wider development and application are severely limited. At present, there are thousands of diamine monomers, and the synthesis technology is relatively mature, but there are few types of dianhydride monomers, and the design and synthesis of dianhydride monomers are much more difficu...

Claims

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Application Information

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IPC IPC(8): C07D493/08C08G73/10
CPCC07D493/08C08G73/1007C08G73/1039C08G73/105C08G73/1067C08G73/1071
Inventor 程琳李沛瑾
Owner HUAQIAO UNIVERSITY
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