In ancient times, it was mainly resin.

The main components of paint now include the following five parts:

(1) Oil: including dry oil and semi-dry oil, it is one of the main film-forming substances.

(2) Resin: including natural resin and artificial resin, it is also part of the main film-forming substances.

(3) Pigments: including coloring pigments, extender pigments and anti-rust pigments, there are many specific varieties, and they are secondary film-forming substances.

(4) Thinner: including solvents and diluents, used to dissolve the above substances and adjust the consistency, and are auxiliary film-forming substances.

(5) Accessories: including driers, curing agents, plasticizers, and moisture-proof agents. It is also an auxiliary film-forming substance.

The components of decorative coatings are mainly composed of three parts:

Main film-forming substances: also called adhesives and fixatives, are the basis of coatings.

Secondary film-forming substance: It is also an integral part of the coating film, but it cannot form a coating film independently of the main film-forming substance.

Auxiliary film-forming substances: including solvents and auxiliary materials. The former such as gasoline, smoke oil, rosin water, benzene, ethyl acetate, acetone, etc.; the latter such as curing agent, emulsifier, tackifier, drier, wetting agent, dispersant, defoaming agent, initiator, catalyst , stabilizers, anti-aging agents, antifreeze, etc.