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Product of glycidyl ether of a mono or polyhydric phenol, and process for producing product of glycidyl ether of a mono or polyhydric phenol, epoxy resin composition

A technology of glycidyl ether and epoxy resin, used in organic chemistry and other directions

Pending Publication Date: 2021-06-25
CHANG CHUN PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There is still a continuing need for improved glycidyl ether compounds, as many of the compounds and methods described in the above documents still have deficiencies

Method used

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  • Product of glycidyl ether of a mono or polyhydric phenol, and process for producing product of glycidyl ether of a mono or polyhydric phenol, epoxy resin composition
  • Product of glycidyl ether of a mono or polyhydric phenol, and process for producing product of glycidyl ether of a mono or polyhydric phenol, epoxy resin composition
  • Product of glycidyl ether of a mono or polyhydric phenol, and process for producing product of glycidyl ether of a mono or polyhydric phenol, epoxy resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 4 and comparative example 1 to 4

[0067] In Examples 1 to 4, the glycidyl ether product of 4,4'-(propane-2,2-diyl)diphenol was obtained from 4,4'-(propane-2 ,2-diyl)diphenol (hereinafter referred to as "BPA") to prepare. Comparative glycidyl ether products of BPA were prepared according to Comparative Examples 1-4. The properties of the glycidyl ether products of BPA prepared in Examples 1 to 4 and Comparative Examples 1 to 4 are provided in Table 1 below.

Embodiment 1

[0069] The glycidyl ether product of BPA was prepared using a 3 liter-4 neck reactor equipped with means for controlling and displaying temperature and pressure, and means for condensing water and epichlorohydrin (herein also referred to as "ECH") co-distillation mixture and separation of the co-distillation mixture into an organic phase and an aqueous phase. Specifically, 300 g of BPA, 900 g of ECH, and 2.7 g of benzyltriethylammonium chloride (9,000 ppm relative to BPA) as a catalyst for the coupling reaction were added to a 3-liter-4-neck reactor . The molar ratio of ECH to OH groups derived from BPA was 3.7 ([ECH] / [OH]=3.7). The purity of the epichlorohydrin is over 99% by weight, and the contents of glycidol and water in the epichlorohydrin are 0.31% by weight and 0.15% by weight respectively. The mixture was stirred at atmospheric pressure at 40°C to form a homogeneous solution, then the temperature was gradually increased from 40°C to 75°C over a period of 50 hours an...

Embodiment 2

[0073] The glycidyl ether product of BPA was synthesized using the same method as described in Example 1, but: the amount of epichlorohydrin was 1,120 grams; the molar ratio of ECH to OH groups from BPA was 4.61 ([ECH] / [OH]=4.61); the contents of glycidol and water in epichlorohydrin were 0.44% by weight and 0.04% by weight, respectively; and the content of benzyltriethylammonium chloride was 1.35 g (4,500ppm relative to BPA ).

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Abstract

The invention provides an epoxy resin composition of mono or polyhydruc phenol, a product of glycidyl ether of mono or polyhydric phenol and a preparation method of the product. In some instances, the product of glycidyl ether of a mono or polyhydric phenol has an epoxy equivalent weight ("EEW") and a hydroxyl value ("HV"), wherein the epoxy equivalent weight multiplied by the hydroxyl value (EEW*HV) is a value from 1 to 10 eq / 100eq. A process for producing the product of glycidyl ether of a mono or polyhydric phenol typically includes reacting an epihalohydrin with a mono or polyhydric phenol in the presence of a catalyst to produce a halohydrin ether; and dehalogenating the halohydrin ether to form the product of glycidyl ether of a mono or polyhydric phenol.

Description

technical field [0001] The present invention relates to glycidyl ether product of monophenol or polyphenol and its preparation method. In addition, the present invention relates to the use of the glycidyl ether product of monophenol or polyphenol. Background technique [0002] The general preparation of some glycidyl ethers and some glycidyl ethers is described in textbooks, e.g. B. Ellis, "Chemistry and Technology of Epoxy Resins" (Dordrech, SpringerNetherlands Publishers, 1993), and Edited by Li Guilin, "Epoxy Resin and Epoxy Coatings" (Beijing: Chemical Industry Press, 2003), the full text of these documents is hereby incorporated by reference for all purposes. [0003] Glycidyl ethers are traditionally prepared by epoxidation using peroxides, or by reaction of epihalohydrins with hydroxyl compounds to form glycidyl ethers under basic conditions. Processes for the preparation of glycidyl ethers by the reaction of epihalohydrins with hydroxyl compounds can generally be d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/23C07D303/24C07D303/27C07D301/28C08G59/20C08G59/24C08G59/38
CPCC07D303/23C07D303/24C07D303/27C07D301/28C08G59/20C08G59/245C08G59/3218C08G59/38C08G59/063C08G59/5026C07D303/02C07D301/02C08K5/17C08L63/00C08G59/686
Inventor 钟淞广杜安邦
Owner CHANG CHUN PLASTICS CO LTD