A method and apparatus for producing phenolic resin

By using continuous production equipment and optimizing reaction conditions, the problems of quality fluctuations and safety hazards in phenolic resin production have been solved, achieving efficient and environmentally friendly phenolic resin production that meets the needs of high-end applications.

CN119955041BActive Publication Date: 2026-06-30山东友泉新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山东友泉新材料有限公司
Filing Date
2025-04-09
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing phenolic resin production suffers from problems such as large fluctuations in product quality, low production efficiency, high safety hazards, uneven molecular weight distribution, and serious environmental pollution, making it difficult to meet the needs of high-end applications.

Method used

A continuous production unit is adopted, which uses a series of mixers, a first ring reactor and a second ring reactor, combined with a vertical tubular reactor, a circulating pump and a heat exchanger to achieve continuous and dispersed feeding of materials and forced mass and heat transfer. Trimethylhydroxyethyl ethylenediamine is used as a catalyst and reaction aid, and the reaction conditions are optimized to improve the uniformity of molecular weight distribution and reduce the content of free phenolic resin.

Benefits of technology

This technology enables the production of phenolic resins with high solids content and low viscosity, improving product quality stability and production efficiency, reducing free phenolic content, enhancing mechanical properties and environmental friendliness, and ensuring the safety and sustainability of the reaction.

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Abstract

This invention relates to the field of phenolic resin technology, specifically to a method and apparatus for producing phenolic resin. The method involves adding phenol, cresol, tert-butylphenol, and cashew phenol to a mixing tank and mixing them evenly to form a mixed phenol. The mixed phenol is then mixed with an alkaline solution in a mixer to obtain a mixed liquid. The mixed liquid is then reacted with an aqueous formaldehyde solution in a first circular reactor to obtain a prepolymer liquid. The prepolymer liquid is then reacted with trimethylhydroxyethyl ethylenediamine in a second circular reactor to obtain phenolic resin. The mixing tank, mixer, first circular reactor, and second circular reactor are connected sequentially. The phenolic resin production method and apparatus provided by this invention increase the contact area and heat dissipation effect of the materials during the reaction process, promoting rapid reaction and driving the upgrading of phenolic resin towards high performance and environmental friendliness, producing high-solids, low-viscosity phenolic resin products.
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