P-tert-butyl styrene is a monomer raw material for the preparation of polymers and copolymers, belongs to the derivatives of styrene, mainly used in the production of coatings, unsaturated polyester resins, etc. The polymer has a high glass transition temperature, and soluble in aliphatic hydrocarbons, low volatility, and has a wider range of applications than styrene and methyl styrene, which makes it an important material in the development of new materials, theoretical research, and dispersive polymerisation. It has an important role in the development of new materials, theoretical research, dispersion polymerisation and so on, and has a broad application prospect.
At present, domestic p-tert-butyl styrene is mainly produced by adding catalyst to the mixture of isobutylene and ethylbenzene to obtain p-tert-butyl ethylbenzene, and then dehydrogenation reaction is carried out. The main production process of p-tert-butyl styrene is as follows: isobutylene and ethylbenzene are used as raw materials to produce p-tert-butyl ethylbenzene under the action of catalyst; p-tert-butyl ethylbenzene is added to the raw material carburetor, and then passed through the raw material superheater, the first reactor, the intermediate heat exchanger, the second reactor, the condensation system, the gas-liquid separator and the pre-separation tower, etc., and the separated tertiary butyl ethylbenzene is recirculated again, and the other products enter into the distillation column to get the p-tert-butyl styrene product and recovering p-tert-butylstyrene product in paraffin. The equipment used is divided into dehydrogenation reaction system, process condensate system, tail gas treatment system, dehydrogenation liquid fractionation and refining, as well as the vacuum extraction system and polymerisation inhibitor system, which are closely related to the fractionation. After years of development, China’s P-tert-butylstyrene technology has made some progress, and the quality of P-tert-butylstyrene products is constantly improving. As a chemical product, the production of P-tert-butylstyrene is also subject to the supervision of environmental protection departments, and the green and clean production has become the main direction of P-tert-butylstyrene production technology.
From the demand point of view, p-tert-butylstyrene belongs to the niche chemical products, is one of the styrene derivatives, in recent years, the relevant research is gradually increasing, at the same time, its market demand also maintains the warming trend. According to the “2024 Global and China p-tert-butylstyrene Industry In-depth Research Report” released by Xinxin Industry Research Centre, in 2023, China’s demand for p-tert-butylstyrene products is close to ten million scale, and its proportion in the styrene derivatives market is gradually increasing.
From the competition aspect, China’s p-tert-butylstyrene industrial production started late, and subject to technological limitations, the domestic p-tert-butylstyrene production capacity is weak, the number of related enterprises is small, and the product is in urgent need of localised substitution. In addition, the price of p-tert-butylstyrene products is relatively expensive, which limits the development of the industry. At present, the global p-tert-butylstyrene production capacity is mainly concentrated in the United States, and our p-tert-butylstyrene products are mainly imported from the United States.
In general, p-tert-butyl styrene has excellent performance, has important theoretical research value, and has certain development space in the development of new materials, scientific research, environmental protection coatings, medicine and other fields. Industry analysts from Xinsiwei said that due to the limitation of technical level, p-tert-butyl styrene still has a long way to go in terms of upgrading the scale production process and reducing the cost of the product, and there is a big uncertainty in the development of the market.
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