Antifoaming agent for papermaking

Abstract

The invention relates to the technical field of chemical industry products, particularly to an antifoaming agent for papermaking, wherein the antifoaming agent comprises: 120-300 parts of fatty acid,50-80 parts of fatty acid amide, 60-95 parts of fatty acid ester, 3-9 parts of diethylene glycol monooleate, 55-85 parts of allyl alcohol, 2-8 parts of octadecanamide, 45-80 parts of sodium hydroxide,and 1-2 parts of dimethyl silicone oil. The antifoaming agent of the present invention has advantages of excellent foam inhibition and antifoaming ability, low cost and good economic and social value.

Description

technical field [0001] The invention relates to the technical field of chemicals, in particular to a defoamer for papermaking. Background technique [0002] Antifoaming agent, also known as antifoaming agent, is a food additive that reduces surface tension during food processing, inhibits foam generation or eliminates foam that has already occurred. The defoamers approved for use in my country include emulsified silicone oil, high-carbon alcohol fatty acid ester compound, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene alcohol amine ether, polyoxypropylene glyceryl ether and polyoxypropylene polyoxygen 7 types including vinyl glyceryl ether and polydimethylsiloxane. Most defoamers are liquid compound products, which are mainly divided into three categories: mineral oils, silicones, and polyethers. Mineral oil defoamers are usually composed of carrier, active agent and so on. Silicone defoamers generally include polydimethylsiloxane ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of existing defoamers with poor effect, the invention provides a defoamer for papermaking