Method of preparing fluorine-containing alkenyl demoulding intermediate with industrial side product terpinene

Abstract

The invention discloses a method of preparing fluorine-containing alkenyl demoulding intermediate with an industrial side product, terpinene. The method uses the industrial side product, terpinene, to prepare the fluorine-containing alkenyl demoulding intermediate, so that the method has abundant raw material source and low cost. The synthesized product is a fluorine-containing dialkenyl dicarboxylate compound and belongs to the fluorine-containing alkenyl demoulding intermediate. The fluorine-containing alkenyl demoulding intermediate can be reacted with an acrylic compound further to synthesize a high-effective fluorine-containing demoulding agent, thus increasing processing efficiency of high-molecular polymers and satisfying market demand. The method has excellent economic and social benefits, has simple reactions and operations, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of release additive synthesis, in particular to a method for preparing a fluorine-containing alkenyl release intermediate by using terpinene, an industrial by-product. Background technique [0002] The release agent is a functional substance between the mold and the finished product. In the field of polymer processing, the use of release agents is essential. Release agents are widely used in metal die casting, polyurethane foam and elastomers, glass fiber reinforced plastics, injection molding thermoplastics, vacuum foamed sheets and In various molding operations such as extrusion profiles. Fluorine-containing compounds have very low surface energy and high thermal and chemical stability, and fluorine release agent is a mixture prepared by mixing the main fluorine-containing compounds and other auxiliary materials, and other types of release agents Compared with other agents, the advantages of fluorine rel...

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Problems solved by technology

With the improvement of social and environmental requirements, traditional perfluorooctyl sulfonyl compounds and perfluorooctanoic acid compounds are restricted or banned due to their harm to the environment and organisms. Some foreign companies and research institutions have carried out research on fluorine release agents A large number of researches, domestic reports on this research and development are less, the existing high-efficiency fluorine release agents basically rely on imports, and use turpentine as raw material to synthesize terpineol, which will produce a large amount of by-product terpinene, by-product pine Oleene accounts for about 20% to 30% of terpineol production. my country is rich in turpentine resources and is one of the countries with the largest production of rosin and turpentine. The by-product terpinene produced by the synthesis of terpineol is huge every year. Oleene is a mixture of isomers with very similar properties, and separation is very difficult, so it can only be used as a low-grade solvent, and it is difficult to produce greater economic benefits

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