Application of acidic ionic liquid in catalyzing and synthesizing diphenolic acid and/or diphenolic acid ester

A technology of acidic ionic liquid and bisphenolic acid ester, applied in the field of application of acidic ionic liquid in catalytic synthesis of bisphenolic acid and/or bisphenolic acid ester
CN102701955AInactive Publication Date: 2012-10-03GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
Publication Date
2012-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method utilizing acidic ionic liquid in catalyzing and synthesizing diphenolic acid and / or diphenolic acid ester. The method comprises heating and stirring 1-100 parts of the acidic ionic liquid, 1-200 parts of levulinic acid and 1-500 parts of phenol for 5-60 hours' reaction under the protection of nitrogen to obtain the diphenolic acid; and continuously adding alcohols into the reacted mixture, stirring and heating the mixture to obtain the corresponding diphenolic acid ester. The acidic ionic liquid utilized in the method is sulfonic acid ion liquid including tertiary amine base monokaryon sulfonic acid ion liquid, imidazolyl monokaryon sulfonic acid ion liquid, pyridyl monokaryon sulfonic acid ion liquid, ditertiary amine base dikaryon sulfonic acid ion liquid, diimidazolyl dikaryon sulfonic acid ion liquid or dipyridyl monokaryon sulfonic acid ion liquid. The method successfully enables the acidic ionic liquid to serve as a catalytic agent to prepare the diphenolic acid and / or the diphenolic acid ester and is simple in preparation process and high in yield. According to the method, the separation of the catalytic agent and the reaction substrate is achieved through a solvent extraction method, and the catalytic agent can be repeatedly used and has no significant inactivation.
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Description

technical field

[0001] The invention belongs to the application field of acidic ionic liquids. Specifically, the invention relates to the application of an acidic ionic liquid in the catalytic synthesis of bisphenolic acid and / or bisphenolate ester. Background technique

[0002] Diphenolic acid (diphenolic acid, DPA, 4,4-bis(hydroxyphenyl)valeric acid) is obtained from the condensation reaction of levulinic acid and phenol, and bisphenolic acid ester can be esterified by diphenolic acid and alcohol under the catalysis of acid catalyst The chemical reaction is obtained. Bisphenolic acid and bisphenolic acid ester are usually used as intermediates to prepare coatings, lubricating oil additives, cosmetics, surfactants, plasticizers, textile auxiliaries, and can also replace bisphenol A for the preparation of epoxy resins, polyesters, etc. Carbonic acid esters (Ma Xiaojian, Wang Yongli, Chang Chun; research progress on the synthesis and application of bisphenolic acid; "Henan C...

Claims

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