Application of glycidyl terminated polyether in defoamer

Abstract

The invention provides application of glycidyl terminated polyether in a defoamer, and the defoamer is characterized by being prepared from the glycidyl terminated polyether shown as formula (II), wherein R1 in the formula (II) is C4-C11 alkyl, n is equal to 0-20 and m is equal to 0-20. The defoamer prepared from the glycidyl terminated polyether and used for water-based paint, water-based printing ink, polyacrylic acid size and the like has the property of producing no shrinkage cavity, strengthening dafoaming capability and lasting anti-foaming.

Description

Application of Glycidyl Terminated Polyether in Defoamer technical field The invention belongs to the technical field of synthesizing capped polyethers, and in particular relates to the application of epoxypropyl capped polyethers in defoamers. Background technique The capped polyether has high chemical stability due to the replacement of the hydroxyl group at the end of the chain, and this type of capped polyether also has a lower cloud point, a lower foaming ability, an enhanced oil removal ability, a lower critical micelle concentration and chemical properties. It is more stable and suitable for high temperature and long-term use under different pH values, so it has a wide range of applications. Such as foam stabilizer, emulsifier, cosmetic raw material, paint leveling agent, defoamer, antistatic agent, plastic modifier, fuel additive, fabric finishing agent, water-soluble lubricant, release agent for polyurethane foam , Pesticide auxiliaries and so on. In the existi...

AI Technical Summary

Problems solved by technology

However, the anti-foaming performance and shrinkage-reducing performance of the existing end-capped polyethers are not ideal enough.

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