Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing 2,2-bis(4-hydroxy cyclohexyl) propane

A hydroxycyclohexyl and hydroxyphenyl technology, applied in hydrogenation preparation, chemical recovery, organic chemistry and other directions, can solve problems such as unsatisfactory selectivity, and achieve the effects of avoiding organic pollution, high conversion rate and high activity

Inactive Publication Date: 2011-10-12
盘锦和运新材料有限公司 +1
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The selectivity of the system is not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put 8g of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) in a kettle-type high-pressure reactor with a volume of 75ml, 30ml isopropanol, 0.5g loaded nanometer Ru / C catalyst, airtight Finally, replace it with nitrogen and hydrogen three times, then fill it with 2MPa hydrogen, put it into the oil field to heat up, and stir slowly. When the temperature in the autoclave reaches 110°C, adjust the hydrogen valve to keep the system pressure at 5MPa. constant, start the reaction, and react at 110°C for 90 minutes. After cooling, samples were taken for capillary gas chromatographic analysis. The specific method was: FID detector, SE-54 capillary column (50m×0.32mm×0.5μm), gasification detection temperature: 280°C, column temperature: initial temperature 160°C, Raise to 260°C at a rate of 8°C / min and keep for 20 minutes. The analysis results are: the conversion rate of bisphenol A is 100%, and the yield of hydrogenated bisphenol A is 98.7%. ; The product was qualitatively analyze...

Embodiment 2

[0037] Put 8g of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) in a kettle-type high-pressure reactor with a volume of 75ml, 30ml ethyl acetate, 0.5g loaded nanometer Ru / C catalyst, airtight Finally, replace it with nitrogen and hydrogen three times, then fill it with 2MPa hydrogen, put it into the oil field to heat up, and stir slowly. When the temperature in the autoclave reaches 100°C, adjust the hydrogen valve to keep the system pressure at 5MPa. constant, start the reaction, and react at 100°C for 90 minutes. After cooling, samples were taken and analyzed by capillary gas chromatography. The analysis results showed that the conversion rate of bisphenol A was 100%, and the yield of hydrogenated bisphenol A was 98.1%. Concrete quantitative and qualitative analysis method is identical with example 1.

Embodiment 3

[0039]Put 10g of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) in a kettle-type high-pressure reactor with a volume of 75ml, 30ml tetrahydrofuran, 0.5g supported nanometer Ru / C catalyst, and use it after airtight Nitrogen and hydrogen are replaced three times, then filled with 2MPa hydrogen, put into the oil zone to heat up, and stir slowly. When the temperature in the autoclave reaches 110°C, adjust the hydrogen valve to keep the system pressure at 5MPa. The hydrogen pressure remains constant. The reaction was started, and the reaction was carried out at 110° C. for 90 minutes. After cooling, samples were taken for capillary gas chromatography analysis, and the analysis results showed that the conversion rate of bisphenol A was 100%, and the yield of hydrogenated bisphenol A was 99.3%. Concrete quantitative and qualitative analysis method is identical with example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for preparing 2,2-bis(4-hydroxy cyclohexyl) propane (hydrogenated bisphenol A). 2,2-bis(4-hydroxy phenyl) propane (bisphenol A) is used as a raw material in the method, and a supported nano ruthenium-based catalyst is adopted for catalytic hydrogenation reaction. A kettle type high-pressure reactor and the supported nano ruthenium catalyst with high activity are adopted in the method, the concentration of substrate is 5 to 50 percent, the reaction is performed for 1 to 5 hours at the temperature of between 80 and 150 DEG C under the pressure of 3 to 8MPa, the conversion rate of the bisphenol A reaches 100 percent, and the selectivity of the hydrogenated bisphenol A is close to 100 percent. The method has the advantages that the reaction conditions are mild, the operation is simple, the efficiency is high, the product quality is good and the catalyst is easily recycled.

Description

technical field [0001] The present invention relates to a method for preparing 2,2-bis(4-hydroxycyclohexyl)propane. Background technique [0002] 2,2-bis(4-hydroxycyclohexyl)propane (hydrogenated bisphenol A) is mainly used in the manufacture of epoxy resin, polycarbonate, polyacrylic acid resin, unsaturated resin, etc. It has good thermal stability and high chemical stability And strong weather resistance, etc., suitable for outdoor applications. Hydrogenated bisphenol A is usually prepared from bisphenol A by catalytic hydrogenation reaction. This hydrogenation reaction belongs to the hydrogenation of aromatic compounds. In theory, all active components that can catalyze the hydrogenation of benzene ring can be applied to bisphenol The hydrogenation reaction process of A, so according to the characteristics of the molecular structure of bisphenol A, to prepare a catalyst with high activity and good selectivity, it is necessary to select a suitable catalytic active compone...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C35/21C07C29/20
CPCY02P20/584
Inventor 吕连海杜文强张克勇
Owner 盘锦和运新材料有限公司