Extinction agent is a kind of chemical agent after treatment, commonly used categories are silicon dioxide, talc, low molecular thermoplastic resin, etc., its characteristic is easy to disperse. Extinction agent is usually used in coating additives, mainly play a role in reducing the gloss of the film.

Matte is a liquid, light yellow and black, matte mechanism is light hit rough surface, reflected light will scatter, gloss will be reduced. Matte and matting agents are also suitable for printing ink, resin, paint and other fields.

In today's paint ink industry, it is widely used to add extinction agent to prepare products. Such as early people commonly used metal soap as a matting agent. Metal soaps are incompatible with coatings and produce fine particles suspended on the surface, which reduce the reflection of the coating surface after film formation so as to play the purpose of extinction. Wax is also one of the early matting agents widely used. A certain dose of wax powder is added in the preparation of the product, and the wax is separated and suspended on the surface of the coating film to form rough surface after the solvent volatilization, so as to matting.