Generalized paint color paste on the road to environmental development

Paint gives buildings, bridges, ships and even the computers and cell phones we use rich colors, and these colors are rendered entirely thanks to colorants. Today, colorants for coatings have evolved from direct use of pigments to universal color pastes. With the rapid development of various types of functional coatings, the specialization and functionalization of paint colorants will also become a new issue in the development of colorants. Such as building interior and exterior wall emulsion paint, water-based wood paint, water-based toy paint, water-based plastic paint, water-based baking paint, transparent paint, water-based industrial paint and inorganic coatings, fireproof coatings, conductive coatings and other new coatings. The diversification of paint colors is the future trend, therefore, it requires the generalization of color paste system, generalization of performance and generalization of environmental friendliness.

The universal color paste prepared by professional manufacturers greatly simplifies the production process of color paints and strongly promotes the development of coating industry. At present, there are many kinds of color paste products at home and abroad, mainly two categories of water-based color paste and solvent-based color paste. The products are used in different fields, among which water-based color pastes for architectural coatings are the most widely used and have become a self-contained system. With the development of the construction industry and people's demand for diversified and personalized colors of architectural coatings, this type of product is developing rapidly.

The main function of color paste is to give color to coatings, and as the coating system develops in the direction of diversification, the application environment of color paste under different systems is very different, and the coloring requirements are also different. Therefore, the color paste system must have strong general performance and adapt to the coloring requirements in various environments. In order to improve the durability, heat resistance, solvent resistance and migration resistance of pigments, pigment manufacturers keep developing new chemical structure pigment varieties, synthesizing new multi-ring structure pigments and stabilizing crystalline structure, making them have good molecular planarity, symmetry, containing specific substituents, changing molecular polarity, forming intermolecular hydrogen bonds, etc.. These newly synthesized pigments have different surface properties from conventional pigments, and special formulation systems are needed to process them into water-based color pastes.

The domestic demand for color paste is still very large, especially the high-end color paste products are even in short supply. As there are not many large-scale domestic color paste enterprises, they are all small and medium-sized enterprises, which lack high awareness of the research method of color paste and investment of capital and technology, and basically stay at the level of simple processing and low-level treatment. China's domestic color paste level in general or with high-end high performance there is a certain gap. For example, the lack of detailed research in major industrial processes. The color paste produced is generally used in paints, leather, a few latex products, PVC products, anti-static products, paper, art pigments, ink, chemical fiber, etc. inside. And some large industrial projects or industries are not involved.