TDI (toluene diisocyanate) is one of the commonly used polyisocyanate, and polyisocyanate is an important base material of polyurethane (PU). The TDI commonly used in the polyurethane industry is a mixture of 2,4-TDI and 2,6-TDI isomers, including three commonly used grades.

Sodium persulfate is a white odorless crystal or powder, additionally referred to as sodium persulfate. sodium persulfate has precise stability at room temperature and can gradually decompose.

When the PH cost of the ammonia water is small, the supersaturation of the reaction is small, so the obtained magnesium hydroxide has a large particle length and a quick sedimentation speed; whilst the PH price of the ammonia water is tremendously large, the response supersaturation is enormously large, and the sedimentation time of the magnesium hydroxide lengthy.

Good safety factor. Piping reflects that it can prevent the occurrence of explosion caused by partial over-temperature, and it is the safest and most reliable process route for ethylene oxide.

The principle of potassium hydroxide removal of oil stains is actually a simple chemical principle. Since oil stains are a lipid chemical substance, from the analysis of its chemical composition, they are higher fatty acids and glycerides.

Suitable for tiles, marbles, plastic finishes, adhesives, etc., which can reduce the amount of cement. The water retention of HPMC prevents rapid cracking of the slurry after coating and strengthens the strength of the slurry after hardening.

Special combination instruments, such as Kjeldahl trace nitrogen analyzer, K-D evaporation concentrator, rotary evaporation concentrator, etc., should be cleaned and protected.

Castor oil is a kind of fatty acid triglyceride, which exists in castor bean seeds, and the content is between 35% and 57.%.

Oxygen is a colorless and odorless gas. It is not easily soluble in water. It has a density greater than air and supports combustion.

TDI is the abbreviation of toluene diisocyanate. TDI is a polycyanate widely used in industrial production. It is a polyurethane material and an important basic material. Mainly used to make flexible polyurethane foam, polyurethane elastomer, coatings, adhesives, etc.

Bubbles have a great impact on industrial production. In the production process, foams generated due to various reasons need to be treated with defoamers.

The organic improvement of the titanium dioxide surface is to carry out organic coating on the surface of the particles through the chemical reaction or physical absorption of organic molecules on the surface of the particles, transform the surface state of the particles, so that it can be effectively dispersed in the organic solvent, and improve the powder in the organic matter. Compatibility in the interface. Generally can be divided into esterification method, surfactant method, coupling agent method and polymer coating method.