Application of higher alcohol ester hindered phenol antioxidant in C5 petroleum resin

Abstract

The invention relates to application of one or more of compounds of general formula I, in which R is a C8-18 alkyl group, as an antioxidant in the stabilization of C5 petroleum resins. According to the invention, the C5 petroleum resin is stabilized by adopting the higher alcohol ester hindered phenol antioxidant or a composition of the higher alcohol ester hindered phenol antioxidant and a phosphite ester antioxidant and / or a hindered amine antioxidant, and effect is superior to that in the prior art. The higher alcohol ester hindered phenol antioxidant disclosed by the invention is liquid, and compared with a solid product, the higher alcohol ester hindered phenol antioxidant has the advantage of being convenient to produce and use.

Description

technical field [0001] The invention belongs to the technical field of functional additives for polymer materials, and in particular relates to the application of high-carbon alcohol ester hindered phenol antioxidants in C5 petroleum resins, and also relates to the combination of high-carbon alcohol ester hindered phenol antioxidants and other antioxidants in Application in C5 petroleum resin. Background technique [0002] The C5 fraction is a by-product of ethylene production units, accounting for about 10%-15% of ethylene production. C5 petroleum resin is a functional resin obtained by polymerizing the C5 fraction of by-products of ethylene cracking as a raw material, with a molecular weight of 300-3000. C5 petroleum resin has the characteristics of low acid value, good miscibility, water resistance, ethanol resistance, chemical corrosion resistance, good thermal stability, good compatibility with organic matter, and has the function of adjusting viscosity. It is widely u...

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Problems solved by technology

[0005] However, the currently used formulations are all powder antioxidants, so the following problems will occur during the addition process: (1) Intermittent addition of powder antioxidants requires long-term stirring and mixing due to the problem of mass transfer between solids and liquids. The material processing time is long; (2) powder antioxidants are usually poured into the upper opening, and the operation process is dusty, which affects the health of workers; (3) the powder is easy to adhere to the wall of the kettle, and it will accumulate heat for a long time. Carbon, which increases the risk of black spots in the resin

In order to solve this problem, some resin manufacturers adopt the method of adding the antioxidant after melting. Although the problem of continuous production is solved, the energy consumption required for the melting of the antioxidant is large, which increases the production cost and is resistant to Discoloration usually occurs after the oxygen agent is melted, which affects the color of the final resin product

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