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
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • The preparation method of high ortho bisphenol f

Examples

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Example Embodiment

[0019] Example 1

[0020] Modification of resin catalyst: Put 50mL of commercially available D005 resin catalyst in 50mL of diluted hydrochloric acid with a concentration of 1mol / L, soak for 8 hours at room temperature, wash with deionization to neutrality, and filter with suction to obtain H-type cation resin; 1mol / L Zn(OAc) 2 100 mL of the aqueous solution was slowly added to 50 mL of H-type cation resin, reacted at room temperature for 1 h, washed with deionized water 3 times, and filtered with suction to obtain a modified cation resin catalyst.

[0021] Synthesis of Bisphenol F: Take 16mL of modified cationic resin catalyst and place 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 and raise the temperature to 70°C After 5 hours of reaction, the catalyst was separated by filtration, and the filtrate was distilled under reduced pressure to remove water and recover phenol. After cool...

Example Embodiment

[0022] Example 2

[0023] According to the method of Example 1, only 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 referred to as BPF-2.

Example Embodiment

[0024] Example 3

[0025] According to the method of Example 1, only 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 recorded as BPF-3.

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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

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Application Information

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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
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