The Invention Patent "a Preparation Method of 2,2,4,4-tetramethyl-1,3-cyclobutanediol" was Authorized

Recently, our company's invention patent "a preparation method of 2,2,4,4-tetramethyl-1,3-cyclobutanediol" has been authorized by China National Intellectual Property Adiministration, and the patent No. is ZL 202110100278.6.

2,2,4,4-Tetramethyl-1,3-cyclobutanediol (CBDO for short) is an aliphatic diol, mainly used to synthesize high-performance polyesters to replace polycarbonate. The glass transition temperature of ester is low, which limits its application in the field of medium and high temperature. The addition of CBDO can significantly improve the glass transition temperature of polyester, improve weather resistance and transparency. US6559343B1 discloses a method for synthesizing intermediate 2,2,4,4-tetramethyl-1,3-cyclobutanedione (TMCB), using isobutyryl chloride as main raw material and triethylamine as acid binding agent synthesize TMCB. The consumption of triethylamine is twice of acid anhydride in the synthetic method, and a large amount of by-product triethylamine hydrochloride that is difficult to recover can be produced after the reaction. The esters of dimethyl ketene are reported in US5169994, US5258556 and CN111718252A，the solution forms TMCB in the presence of an inert gas. The synthesis route needs to be completed under high temperature and high pressure conditions, and the conversion rate of the cracking reaction is low, the production equipment is complex, and the equipment requirements for laboratories or factories are strict. The preparation method involved in the present invention not only reduces the consumption and cost of triethylamine, but also by using metal powder as the acid binding agent instead of triethylamine, the by-product can still be sold as an industrial commodity, thereby reducing the waste disposal cost of the old process , and create other values.

YACOO vigorously promotes the innovation-driven development strategy and intellectual property strategy, supports and encourages scientific research teams to actively explore, and has carried out more than 10 projects including biological buffers, IVD reagents and accessories. The authorization of this patent not only proves the technological level of the company, but also effectively enhances the market competitiveness of the company, and also makes a huge contribution to the development of the entire industry.

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