Method for catalyzing and producing phenyl phenol formaldehyde resin using macropore strong acid cation exchange resin

Abstract

The invention discloses a phenyl phenol formaldehyde resin of large-hole strong acid cationic exchange resin catalyst, which is characterized by the following: adapting orthoxenol phenol and oxymethylene as raw material; proceeding condensation reaction under solid acid catalyst; filtering in the final point to remove catalyst; distilling the filtrate to obtain the product. The invention saves several medium procedures, which is easy to operate to produce high quality product.

Description

technical field [0001] The invention belongs to the preparation method of phenylphenol formaldehyde resin. In particular, it relates to a thermoplastic phenylphenol formaldehyde resin prepared by using ortho-phenylphenol and formaldehyde as raw materials, under the catalysis of macroporous strong acidic cation exchange resin, through catalytic condensation, suction filtration and distillation. It belongs to the method of phenylphenol formaldehyde resin. Background technique [0002] Thermoplastic phenylphenol formaldehyde resin products can be used to make varnishes with long life and excellent water and alkali stability. This varnish is extremely durable and weather-resistant, especially suitable for wet and cold and marine vessels. Especially marine paint, which has excellent durability and is especially suitable for marine vessels. [0003] At present, there are inorganic acids (hydrochloric acid, phosphoric acid, oxalic acid, sulfuric acid, benzenesulfonic acid), inorg...

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Problems solved by technology

[0003] At present, there are inorganic acids (hydrochloric acid, phosphoric acid, oxalic acid, sulfuric acid, benzenesulfonic acid), inorganic bases (sodium hydroxide, barium hydroxide, ammonia water, zinc oxide), solid acids (macroporous strongly acidic cation exchange resin) to catalyze There are literature reports on the preparation of phenolic resins, and there are literature reports on the preparation of phenylphenol-formaldehyde resins using sodium hydroxide catalysis. The existing production process of phenylphenol-formaldehyde resin products uses o-phenylphenol and formaldehyde as raw materials, and is catalyzed by sodium hydroxide. Condensation, neutralization, washing, extraction, and vacuum distillation are produced, but the amount of wastewater in the process of production is large, which seriously pollutes the environment, and the neutralization and adjustment of the pH value is difficult, and the product quality is poor.

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