White mineral oil for polystyrol

Abstract

The invention discloses a white mineral oil used for polystyrene. The molecular weight of the white mineral oil is 440 to 500. The white mineral oil consists of 30 percent to 35 percent of naphthenic hydrocarbon and 60 percent to 60.9 percent of paraffinic hydrocarbon and therein, the content of aromatic hydrocarbon is less than 0.1 percent. The dense of the white mineral oil at 20 DEG C is 0.850to 0.880 and the kinematic viscosity thereof is 50 mm<2> / s to 110mm<2> / s at 40 DEG C. The white mineral oil which is used for the crystal type polystyrene and has high distillation range, narrow components, appropriate composition of hydrocarbons and high refining degree is obtained from the invention, which meets the requirements on thermal and light stability of the oil used for the crystal type polystyrene. Furthermore, the melt index of the polymer can be increased and Vicat softening point can be adjusted, thereby being favorable for the processing and pelleting and improvement of molding workability, tensile strength and impact strength of the polymer and the like. The product can completely be used for replacing the products of import companies and changes the layout of relying on import completely of the product.

Description

technical field

[0001] The invention belongs to the field of petrochemical industry, in particular to a white mineral oil for polystyrene used in the production of synthetic resin. Background technique

[0002] In 1996, the total production of synthetic resin in my country was 5.35 million tons, which rose from No. 7 in the world to No. 5. Taking polystyrene (PS) as an example, according to my country's "Ninth Five-Year Plan", the development capacity of polystyrene was 180 10,000 tons / year, and Jiangsu Province accounts for 50%, basically by introducing foreign capital and adopting the world's advanced production technology. The technical requirements for food-grade special white mineral oil used in production are high. According to incomplete statistics, the annual demand for special white mineral oil for the production equipment introduced in my country is more than 50,000 tons. As the equipment is put into production, the demand is increasing. The development and producti...

Images