Bisphenol A paraformaldehyde phenolic resin and preparation method thereof

A technology of paraformaldehyde and phenolic resin, which is applied in the field of phenolic resin, can solve the problems of difficult processing, harmful substances endangering the environment, etc., achieve the effect of high molecular weight and solve the problem of environmental pollution
CN112574371AInactive Publication Date: 2021-03-30SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2021-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides bisphenol A paraformaldehyde phenolic resin and a preparation method thereof, n-butyl alcohol is used as a solvent, p-toluenesulfonic acid is used as a catalyst, and bisphenol Aand paraformaldehyde are subjected to addition condensation reaction to obtain bisphenol A paraformaldehyde phenolic resin. The bisphenol A paraformaldehyde phenolic resin is produced by utilizing the characteristic that paraformaldehyde does not contain water, taking bisphenol A as a raw material, taking n-butyl alcohol as a solvent and taking p-toluenesulfonic acid as a catalyst and carrying out addition condensation reaction, the operation is simple, the environment is protected, the production cost is low, the synthetic route is easy to produce, the problem of environmental pollution caused by a large amount of industrial wastewater in the production process of phenolic resin is solved, and the synthesized product has high molecular weight.
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Description

technical field

[0001] The invention belongs to the technical field of phenolic resins, in particular to a bisphenol A paraformaldehyde phenolic resin and a preparation method thereof. Background technique

[0002] At present, in the production process of phenolic resin, phenol and formaldehyde aqueous solution with a mass fraction of about 37% are used as reaction monomers, but because the formaldehyde aqueous solution with a mass fraction of about 37% contains a large amount of water, and at the same time, it is also used in the polycondensation reaction of phenolic resin. A certain amount of water will be produced.

[0003] In order to promote the polycondensation reaction in the production process of phenolic resin, the water must be removed, so that a large amount of industrial wastewater will inevitably be generated in the production of phenolic resin. Harmful substances in wastewater seriously endanger the environment and are difficult to treat.

[0004] Therefore, ...

Claims

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