The polyesterimide market has broad prospects, but it is still in the research and development stage domestically.

Polyesterimide is a modified polyimide resin, which refers to a polyimide that contains both ester groups and imine rings in the main chain of the molecule. Due to the introduction of ester bonds, the properties of the polyimide material are improved. The molding processability improves the strength and modulus of the material, reduces the thermal expansion coefficient and hygroscopicity, and lowers the dielectric constant, making it widely used in liquid crystal displays, flexible printed circuits, insulated wire coatings, solar cells, photosensitive materials, and daily necessities. and other fields.

At this stage, because polyesterimide has high technical thresholds, market thresholds and financial thresholds, the barriers to industry entry are high. The domestic polyesterimide industry is still immature, and companies in the industry are generally in the research and development stage, and have not yet been realized. Industrial production.

According to the “2023-2028 China Polyester Imide Industry Market In-depth Research and Development Prospects Forecast Report released by the Industrial Research Center It shows that China’s polyester imide industry started late. Domestic companies that hold relevant patents include Jinan Shengquan Group Co., Ltd., Zhonghan New Material Technology Co., Ltd., and others include various scientific research institutions and universities. Among them, Jinan Shengquan Group Co., Ltd. adopted a two-step synthesis method and used three types of amines to successfully prepare three new types of polyester imides, which can be used for epoxy modification in different situations. However, this product is not yet available. Realize industrialized production.

In the global market, there are very few companies engaged in polyester imide business. Asahi Kasei Electronic Materials Co., Ltd., Honshu Chemical Industry Co., Ltd., DuPont of the United States, and Korea Chemical Research Institute are in a leading position in research on polyester imide. The production methods studied by relevant foreign companies include one-step method, two-step method, and transesterification method; among them, the two-step method has expanded the chemical imidization method in addition to the traditional hot-pressure amination method.

Although polyesterimide has broad downstream applications and huge market potential, local companies have not yet achieved industrialization and large-scale production of polyesterimide due to a short development time and weak technology accumulation. In recent years, due to the US blockade and suppression of domestic high-tech enterprises, domestic downstream enterprises have actively supported the development of local supply chains and gradually begun to consciously promote the localization of supply chains, providing a good opportunity for the development of China’s local polyesterimide industry.

Industry analysts said that as my country’s electronic products and instruments become more multi-functional, lightweight, miniaturized and highly refined, flexible Printed circuits have increasingly higher requirements on the solvent solubility, linear expansion coefficient, hygroscopic expansion coefficient, water absorption and elastic modulus of the base film. The production of printed circuits also requires higher resolution and better electrical insulation properties. Photosensitive resin, combined with the transformation of traditional fossil energy into renewable energy applications and the development of the solar field, my country’s polyester imide market has a good prospect.