2-Methylpropene, also known as isobutylene, is an organic compound with a chemical formula of C4H8. It is a colorless gas at room temperature and pressure. It is insoluble in water and easily soluble in most organic solvents such as ethanol and ether.
Isobutylene has a wide range of uses. In the pesticide industry, it is mainly used to prepare organophosphorus insecticides such as terbuthion, pyrethroid insecticides such as cypermethrin, and acaricides such as pyridaben. At the same time, isobutylene is also widely used in light industry, oil refining, medicine, spices, building materials and other fine chemical industries.
In industry, high-concentration isobutylene is mainly used to produce polyisobutylene and copolymerize with isoprene to produce butyl rubber. Isobutylene can be alkylated with isobutane to produce high-octane alkylated gasoline, and the methyl tert-butyl ether obtained by reaction with methanol is an excellent gasoline additive. It is also suitable as an alkylation raw material for aromatics, or fine chemicals produced by oxidation, amination and other operations. The derivative of isobutylene, 2-tert-butyl-p-cresol, is coupled with 2-nitro-5-chloroaniline diazotide and then reduced to obtain 2.3" tert-butyl-2'hydroxy-5'-methylphenyl-5-chlorobenzotriazole, which is a good ultraviolet absorber. In addition, o-tert-butylphenol can be nitrated to obtain 2-tert-butyl-4.6-dinitrophenol, which is an agricultural herbicide. Isobutylene can be added with water to produce tert-butyl alcohol, oxidized to produce methacrolein and methacrylic acid, and ammoxidized to produce methacrylonitrile.
English
日本語
한국어
Россия
Français
España
عرب .
Português
Deutsch
भारत
Nederlands
