Preparation and application of non-silicon defoaming agent

Abstract

The patent discloses a non organic silicon defoamer, mainly comprising: carrier, main defoamer, defoamer booster, deflocculating agent and emulsifier; the preparing process comprises: adding the carrier and main defoamer into the reactioin bulb, stirring, heating slowly to 90-200 Deg C, keeping for 0.5-2 hours, adding deflocculating agent into it, cooling to under 100 Deg C, adding defoamer booster, stirring evenly and cooling to under 70 Deg C, adding emulsifier, mixing evenly and getting the non organic silicon defoamer. The defoamer in this invention solves the shortcoming of bad defoaming effect exsiting in the non silicon defoamer, and possesses characteristics of good property, stable, little adding quantity and safe, and etc; the defoamer can be used in the architectural coating, paper making coating, metal cleaning and electrical board cleaning.

Description

technical field

[0001] The invention relates to a chemical composition and a preparation method thereof, more precisely to the preparation of a non-organic silicon defoamer, and the defoamer is a fine chemical additive. Therefore, it belongs to the technical field of fine chemical preparations. Background technique

[0002] Defoamer is a kind of fine chemical additive, its main function includes two aspects of defoaming and foam suppression. A good defoamer not only has excellent defoaming and antifoaming properties, but also requires excellent compatibility with other additives and stability in the foaming system. The silicone defoamer mainly relies on the oxygen atoms connected to the silicon atoms in the silicone oil molecules to form a certain strength of hydrogen bonds with water, so that it has a low surface tension and makes the silicone oil molecules spread easily. The basic viewpoints of spreading coefficient and immersion coefficient proposed by S·Ross and Woods ...