Function of aldehyde ketone resin

Aldehyde ketone resin is a resin product formed by the condensation of cyclohexanone and formaldehyde under certain conditions. This resin has high hardness Low viscosity, especially suitable for coating, ink and other modified additives. The raw materials used in this resin are cheap and abundant It is easy to be industrialized. Therefore, it has been industrialized in Japan, the United States and Germany. China has developed this kind of resin in the 1970s But there has been no report and industrial production. The traditional method of synthesizing aldehyde ketone resin is the co condensation of cyclohexanone and formaldehyde in the presence of organic solvent and sodium hydroxide. However, the quality of the resin obtained is unstable, the miscibility with hydrocarbon solvent is poor, and the color is dark. Therefore, the modification effect on coatings and other materials is not ideal.

Aldehyde ketone resin is a neutral, non-toxic hard resin formed by condensation polymerization of aldehyde ketone. The appearance is colorless to pale yellow transparent particles. It can be dissolved in all common solvents in the coating industry except aliphatic hydrocarbons and has very good solubility; It is applicable to most ink, coating and adhesive systems, and can be used to improve the fast fluidity, dryness, gloss, adhesion and pigment wettability of ink, adhesive and coating. The chemical structure of aldehyde ketone resin gives it special quality and characteristics. Because this resin does not contain ester bond in the structure, it has good water resistance. In addition, the polarity of ketone group and hydroxyl group makes it not only have wide solubility and miscibility, but also have good pigment wettability and adhesion. Such characteristics make it play a very good role in improving the quick drying, gloss, adhesion, leveling, pigment wettability, weather resistance and solid content of ink, coating and adhesive, thus becoming an ideal raw material for ink, coating and adhesive.

Aldehydes and ketone resins have good gloss, strong hardness, anti degradation, and no color change under the sun. Due to the fact that there is no ester bond in the structure of aldehyde ketone resin, the water resistance is better. Aldehyde ketone resin is widely used in wood paint, composite, flexographic, gravure ink, ball pen ink, alcohol compatible ink, bronzing material, heat sealing coating, high solid industrial coating and so on.

The molecular structure of ketone aldehyde resin contains carbonyl group and the terminal group is hydroxyl group. It has good compatibility with the resin and solvent used for coating, has good wetting and dispersing effect on the pigment, and can effectively improve the properties of the paint such as initial drying, adhesion, hardness and gloss, so that the formed paint film has good oil resistance, chemical resistance and weather resistance. It is a multi-functional additive with excellent performance and is widely used in the preparation of coatings Grinding resin for ink universal color paste and additives for improving coating performance. In addition, it is also widely used as dispersant and brightener for ink and ballpoint pen.