Synthetic method for emulsion type antioxidant

Abstract

The invention discloses a synthetic method for an emulsion type antioxidant. The method comprises the following steps: S1, preparation of materials, wherein the materials are composed of o-cresol, paraformaldehyde, piperidine, n-octyl mercaptan and dimethylformamide; S2, heating and stirring: putting the prepared materials into a reaction kettle according to a proper ratio, and conducting stirring, S3, cooling: stopping stirring, and performing cooling to room temperature; and S4, primary reduced-pressure distillation: putting reactants cooled to room temperature into a reduced-pressure distillation machine for reduced-pressure distillation. According to the synthetic method for the emulsion type antioxidant in the invention, during reduced-pressure distillation, a distilled solvent can berecycled and is convenient to reuse, the effects of saving resources and protecting the ecological environment are achieved; and meanwhile, an auxiliary antioxidant, a surfactant, a defoaming agent,a thickening agent and water are heated to 100 DEG C and stirred, so a reaction speed can be increased, working time is saved, and production efficiency is improved.

Description

technical field [0001] The invention relates to the field of antioxidants, in particular to a method for synthesizing emulsion-type antioxidants. Background technique [0002] Plastics, rubber and other polymer materials undergo chemical changes in structure due to the comprehensive influence of various external factors during storage, processing, and use, and gradually lose their use value. This phenomenon is called polymer material degradation. Aging, the aging process is an irreversible process, which is often seen in daily life, such as rubber products gradually losing elasticity, plastic films become brittle and cracked, fuel oil viscosity increases, etc. There are many reasons for aging, both external and internal. Yes, the life activities of all organisms on the earth rely on oxygen to maintain. Oxidation reactions are also the source of life activities and energy. However, oxygen can oxidize and degrade the molecular chains of polymers, shortening the service life of...

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Problems solved by technology

[0002] Plastics, rubber and other polymer materials undergo chemical changes in structure due to the comprehensive influence of various external factors during storage, processing, and use, and gradually lose their use value. This phenomenon is called polymer material degradation. Aging, the aging process is an irreversible process, which is often seen in daily life, such as rubber products gradually losing elasticity, plastic films become brittle and cracked, fuel oil viscosity increases, etc. There are many reasons for aging, both external and internal. Yes, the life activities of all organisms on the earth rely on oxygen to maintain. Oxidation reactions are also the source of life activities and energy. However, oxygen can oxidize and degrade the molecular chains of polymers, shortening the service life of materials. This makes people think of using effective methods to prevent or delay the oxidation or aging of materials. The most common way is to use antioxidants, which are substances that are easy to interact with oxygen, and put them in the protected substances. , so that they react with oxygen first to protect substances from or delay oxidation. In the rubber industry, antioxidants are also called antiaging agents; The effect of protecting the ecology, secondly, the work efficiency is slow, which is not conducive to the production speed of the enterprise

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