1. What are the main components of paints and coatings? The main components of 　　 paint include the following five parts: 　　Oil: including dry oil and semi-dry oil, is one of the main film-forming substances. 　　 Resin: Including natural resin and artificial resin, it is also part of the main film-forming material. 　　 Pigments: Including coloring pigments, extender pigments and anti-rust pigments. There are quite a variety of specific types, and they are secondary film-forming substances. 　　 Thinner: Including solvents and diluents, used to dissolve the above substances and adjust the consistency, as an auxiliary film-forming substance. 　　 Accessories: including drier, curing agent, plasticizer, moisture-proof agent. It also belongs to auxiliary film-forming substances.

​The stability of in vitro diagnostic reagents is the key to restricting the marketization of products. There have been a number of patents on preservatives for in vitro diagnostic reagents abroad, but the domestic is still in the exploration stage

What is sterilization (sterilazation, sterilant)? Refers to the process of using strong physical and chemical factors to kill or remove all pathogenic and non-pathogenic microorganisms in the external environment, including bacterial spores and fungal spores. It is an absolute concept. The effect is expressed by the sterilization rate, generally ≥99.9999%.

The upstream industries of the coating industry include the manufacturing of chemical raw materials such as resin, solvent, pigment, filler and additives, while the upstream of chemical raw materials such as resin and solvent is the petrochemical industry. The downstream of the coating industry is mainly construction, furniture, automobile, household appliances and other production enterprises and home decoration market.

Preservatives play a decisive role in the washing industry. Nowadays, preservatives can be said to be unique. It is found in various fields. The effect of preservatives is powerful and the coverage area is vast. Because of this, preservatives It is more common in the washing and daily chemical industry. Preservatives are so magical that we say, so what are their specific effects? Today I will introduce to everyone.

Compared with traditional defoamers, paper-making defoamers have better sustainability, and can exert excellent defoaming and anti-foaming effects with a very small amount of addition. In addition, the paper-making defoamer significantly reduces the amount of air inflow and the resulting foam, thereby improving the water discharge of the pulp mat. It can quickly eliminate the foam produced by lignin and other surfactants, and has excellent effects in pulping, pulp washing, papermaking and sizing, and it defoams quickly.

There are many types of antibacterial agents for biological reagents, such as acids, bases and their salts, neutral compounds, mercury compounds, and quaternary amine compounds. Preservatives have a killing effect on microbial propagules, but for spores they can't develop into propagules and gradually die. Different types of preservatives have different mechanisms of action. For example, alcohols can denature pathogenic microorganism proteins; phenylmethylbenzene and parabens can combine with pathogenic microorganism enzyme systems to compete for their coenzymes; cationic surfactants, etc. It is by reducing the surface tension to increase the permeability of the bacterial cell membrane.

Cosmetic manufacturers add preservatives in order to protect the quality of cosmetics and extend their use period.

1. Changes in consumer consumption trends will lead the development of the industry 2. The product structure needs to be adjusted and upgraded