Production method of terpene resin

Abstract

A kind of production method of terpene resin, the production procedure is to first carry out polymerization reaction in reaction kettle with turpentine oil, toluene, catalyst aluminum trichloride, then pour hot water into the mixed product of polymerization reaction to carry out water washing, through water washing, catalyst and The reaction dirt is discharged, the mixed product of the polymerization reaction after washing is distilled, and the toluene is recovered through the distillation process. During the distillation process, the liquid resin and the substances that cannot participate in the reaction are also discharged, and the obtained is the terpene resin. The reaction kettle used in the production method comprises an enamelled glass body and a built-in cooling device. The cooling device is a stainless steel coil group placed in the kettle, and the coil group is filled with normal temperature saturated brine. The invention has mild and uniform reaction, small temperature fluctuation range, stable equipment operation, lighter product color, and can increase the yield by 20%. Reduce equipment investment, save energy and reduce consumption, low production cost, and good economic benefits.

Description

technical field [0001] The invention relates to a production method of terpene resin. Background technique [0002] Terpene resin is processed from natural turpentine oil, which has good properties such as transparency, non-toxicity, neutrality, electrical insulation, hydrophobicity, non-crystallization, resistance to dilute acids and alkalis, heat resistance, light resistance, aging resistance and strong adhesion. It has good compatibility with various synthetic substances and is easily soluble in aromatic hydrocarbons and vegetable oils. Terpene resin is an excellent tackifier, and its tackifying performance is superior to rosin, rosin modified products and petroleum resins; it is also a modifier for hot-melt materials, and is widely used in rubber, plastics, inks, coatings, adhesives, Pressure-sensitive adhesive, cable, color printing, paint, packaging, anti-rust oil, chewing gum and other industries. The main raw material for the production of terpene resin is turpenti...

AI Technical Summary

Problems solved by technology

3-5% of the effective component is lost, and the energy consumption is large, and a corresponding investment of 1 million yuan needs to be increased; secondly, during polymerization, turpentine and solvent are first dropped into the kettle, and then the catalyst is dropped in batches, and the reaction temperature fluctuates greatly. The operation of the equipment is unstable and the output is small; thirdly, heat transfer oil is used to provide heat during distillation. The investment of the heat transfer oil system is 200,000 yuan, the distillation time is long, and the product color is deep; rectification and washing water heating must use steam boilers; in short , the existing process requires large investment, high energy consumption, only about 70% yield and poor product quality

[0004] After searching the Chinese patent literature database with "terpene" as the subject term, it can be seen that although there are prior patents and applications involving terpene resins, they are all technical solutions for the application or modification of terpene resins, and the related The technology of its own manufacturing process has not yet been discovered

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