Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

The preparation method of high ortho bisphenol f

A high-ortho-position and resin technology, applied in the preparation of organic compounds, organic chemical methods, chemical instruments and methods, etc., can solve the problems of complex post-treatment process, equipment corrosion environment, low yield, etc., to avoid equipment corrosion, Inexpensive, easy post-processing effects

Active Publication Date: 2020-06-09
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the prior art that the method for producing bisphenol F with high ortho-isomer content is likely to cause equipment corrosion and environmental pollution, or the post-treatment process is complicated, and the yield is low, the invention provides a modified Method for preparing high ortho bisphenol F with cationic resin catalyst

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • The preparation method of high ortho bisphenol f

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Modification of resin catalyst: Place 50 mL of commercially available D005 resin catalyst in 50 mL of dilute hydrochloric acid with a concentration of 1 mol / L, soak at room temperature for 8 hours, wash with deionization to neutrality, and suction filter to obtain H-type cationic resin; 1mol / L Zn(OAc) 2 Slowly add 100 mL of aqueous solution into 50 mL of H-type cationic resin, react at room temperature for 1 h, wash with deionized water three times, and filter with suction to obtain a modified cationic resin catalyst.

[0021] Synthesis of bisphenol F: Take 16mL of modified cationic resin catalyst and put it in a three-necked flask, add 16.2g of 37wt% formaldehyde aqueous solution (0.2mol), stir at 30°C for 1h; add 94g of phenol (1mol) and stir well, then heat up to 70°C After reacting for 5 h, the catalyst was separated by filtration, and the filtrate was distilled under reduced pressure to remove water and recover phenol. After cooling, the bisphenol F product was obt...

Embodiment 2

[0023] According to the method of embodiment 1, only with Mg(OAc) 2 solution instead of Zn(OAc) 2 The solution modifies the H-type cation exchange resin, and the final bisphenol F product obtained is denoted as BPF-2.

Embodiment 3

[0025] According to the method of embodiment 1, only with Mn(OAc) 2 solution instead of Zn(OAc) 2 The solution modifies the H-type cation exchange resin, and the final bisphenol F product obtained is denoted as BPF-3.

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 discloses a preparation method of high-ortho-isomer-content bisphenol F. Formaldehyde and phenol are catalyzed to react by adopting a modified cation exchange resin catalyst; the modified cation exchange resin catalyst is obtained by soaking highly acidic cation exchange resin by using dilute hydrochloric acid, then washing the highly acidic cation exchange resin with water and afterwards mixing the highly acidic cation exchange resin with a divalent-metallic-ion hydroxide or a salt-of-weak-acid solution to carry out a reaction. The reaction is catalyzed by adopting the divalent metallic ion modified cation exchange resin; the prior reaction of the formaldehyde at a phenolic hydroxyl o-position is facilitated; a bisphenol F product with high o-isomer content is effectively prepared; after the reaction is completed, the catalyst can be recovered and recycled through suction filtration, cleaning and the like; after the reaction, the phenol can be also recovered in the reduced pressure distillation process of filtrate subjected to the suction filtration; the post treatment is simple; moreover, the problem of equipment corrosion as inorganic acids of phosphoric acid and the like are used is avoided.

Description

technical field [0001] The invention relates to a preparation method of bisphenol F, in particular to a preparation method of high ortho bisphenol F. Background technique [0002] Bisphenol F is prepared by condensation of phenol and formaldehyde under the action of a catalyst, and its product is usually a mixture of three isomers of 2,2'-, 2,4'- and 4,4'-dihydroxydiphenylmethane . Bisphenol F is an important chemical intermediate, which can be used to prepare epoxy resin, polycarbonate resin, modified phenolic resin, etc. The performance of the cured product of bisphenol F epoxy resin is basically the same as that of bisphenol A epoxy resin, but its viscosity at room temperature is only 1 / 4-1 / 7 of that of bisphenol A resin, which greatly increases its application range. [0003] The ratio of the three isomers in bisphenol F determines the ratio of the isomers in the epoxy resin, thereby determining the performance of the epoxy resin. If the content of 4,4'-dihydroxydiphe...

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
IPC IPC(8): C07C39/16C07C37/20B01J31/10
CPCB01J31/10B01J2231/4205C07B2200/09C07C37/20C07C39/16
Inventor 邓玉媛霍稳周李花伊刘野张宝国
Owner CHINA PETROLEUM & CHEM CORP
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com