Catalyst for preparing glycidyl tertiary carbonic acid ester and preparation method thereof

A technology of glycidyl ester and tertiary carbonic acid, which is applied in the field of new catalysts and its preparation, and can solve the problems of more dichloropropanol by-products and low selectivity of quaternary ammonium salt catalysts.

Active Publication Date: 2020-10-20
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the problems of low selectivity of quaternary ammonium salt catalysts, more dichloropropanol and heavy by-products in the process of forming the intermediate tertiary carbonic acid halohydrin ester in the first step of producing E10P at present, the present invention firstly provides a A kind of catalyst that is used for preparing glycidyl ester of tertiary carbonic acid (E10P), wherein the structure of said catalyst is shown in formula II,

Method used

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  • Catalyst for preparing glycidyl tertiary carbonic acid ester and preparation method thereof
  • Catalyst for preparing glycidyl tertiary carbonic acid ester and preparation method thereof
  • Catalyst for preparing glycidyl tertiary carbonic acid ester and preparation method thereof

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Embodiment Construction

[0026] The embodiments will be described in detail below in conjunction with the accompanying drawings, but the content of the present invention is not limited thereby.

[0027] The implementation steps of the present invention are as follows: add a certain amount of catalyst and tertiary carbonic acid in a three-necked flask, control the temperature in an oil bath, stir magnetically, add epichlorohydrin at one time or dropwise to react, and continuously take samples to measure the acid value. When the acid value When it is lower than 3-1.5mg KOH / g, the first step reaction is completed. Since the present invention focuses on the reaction of the first step of tertiary carbonic acid and epichlorohydrin, the second step of saponification and the subsequent refining process are no longer discussed in depth. The specific reaction system is shown in Table 1, and the specific meanings represented by the abbreviations of each substance in Table 1 are as follows: tetramethylammonium ne...

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Abstract

The invention relates to a catalyst for preparing glycidyl versatate, a method for preparing the catalyst, and a method for preparing glycidyl versatate by using the catalyst. The catalyst is tetramethylammonium neodecanoate, and can catalyze reaction of versatic acid with epichlorohydrin under homogeneous conditions. In the reaction process, the catalyst has advantages of high catalytic selectivity, fast reaction rate, homogeneous operation and the like. When the catalyst is applied to E10P preparation, utilization rate of versatic acid and epichlorohydrin can be effectively improved, and concentration of byproducts and process energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysis, and in particular relates to a novel catalyst for the preparation of glycidyl tertiary carbonate and a preparation method thereof. Background technique [0002] The structural formula of glycidyl tertiary carbonic acid ester (E10P) is shown in formula I, wherein R1 and R2 are saturated alkyl groups, and the sum of their carbon numbers is 7, which is a mixture of isomers. [0003] [0004] Glycidyl tert-carbonate (E10P) [0005] The structure of tertiary carbonic acid glycidyl ester consists of two parts: the tertiary carbon group on the left and the epoxy group on the right, and the middle is connected by an ester bond. As an active group, the epoxy group can react with various substances with active hydrogen (such as carboxyl, amine, hydroxyl), which ensures that E10P can be introduced into various resins to play a role. As the functional group of E10P, the tertiary carbon group ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/04B01J31/02C07D301/30C07D303/16
CPCB01J31/0239B01J31/0271B01J31/04B01J2231/4288C07D301/30C07D303/16
Inventor 骆广生闫自飞王凯
Owner TSINGHUA UNIV
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