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

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...

AI Technical Summary

Problems solved by technology

How to improve the deficiencies in the application of polyimides and overcome the difficulties in the synthesis of dianhydrides and the lack of species have been unsolvable for those skilled in the art.

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