Preparation process for mixed alkyl phenol aldehyde resin condensation compound

Abstract

A kind of manufacture method of mixed alkylphenol-formaldehyde resin condensate, is the mixture of any two or three of p-tert-butylphenol, p-tert-octylphenol, p-nonylphenol three kinds of alkylphenols and Paraformaldehyde is condensed in an aqueous solution of a weakly basic catalyst to prepare a condensate. The resin condensate can also react with rosin to prepare rosin-modified mixed alkylphenol-formaldehyde resin. In the present invention, paraformaldehyde is used to replace 37% formaldehyde aqueous solution and a weak base is used as a catalyst, which saves the two process steps of hydrochloric acid neutralization and water washing, reduces the discharge of phenol-containing wastewater, is beneficial to environmental protection, and improves production efficiency .

Description

Technical field

[0001] The invention relates to a method for producing an intermediate of a rosin-modified mixed alkylphenol-formaldehyde resin, in particular to a method for producing a condensate of a mixed alkylphenol-formaldehyde resin. Background technique

[0002] With the continuous progress of society, the printing industry, one of the important pillar industries of modern society, has also made great progress, and at the same time, it has put forward higher requirements for the quality and performance of printing inks. The key to the performance of printing inks is the performance of ink binders. To produce high-speed, multi-color, fast-drying high-grade printing inks, it is necessary to have high molecular weight, high solubility synthetic resin binders to provide guarantees. Rosin-modified phenolic resin is one of the resins widely used in printing ink and paint manufacturing industries, especially the important resins for ink binders. Their quality directly deter...