Self-emulsifying polyether silicone oil defoamer is a self-emulsifying new type of high-efficiency composite silicone defoamer which uses silica white silicon grease and polyether modified silicone oil as active ingredients and is supplemented with other auxiliaries. Polyether modified silicone oil has a strong emulsifying ability, can emulsify silicone oil and self-emulsifying, making the entire emulsification system very stable; due to both the low surface tension of polysiloxane and the easy dispersibility of polyether, it makes defoaming The agent is easy to disperse and spread; it has defoaming properties when the temperature is higher than the cloud point, and is dispersed in the foaming liquid when the temperature is lower than the cloud point, making the defoaming lasting. Due to the coordination of the components, the applicability of the defoamer is improved. It has the characteristics of high temperature resistance, acid and alkali resistance, mechanical stability, wide application range, low dosage, high efficiency, and long-term defoaming. It is widely used in printing and dyeing. , Papermaking, pharmaceutical, coatings, petroleum, chemical and other fields, especially suitable for harsh foaming liquids that are difficult for general silicone oil emulsions, such as defoaming in high temperature dyeing of polyester fiber fabrics, defoaming of diethanolamine aqueous solution desulfurization systems, Defoaming of various oils, cutting fluids and antifreeze systems.

Example of self-emulsifying polyether defoamer formulation for dyeing: (100% active)

Polyether silicone oil: Hydrosilication reaction is carried out with low-hydrogen silicone oil (0.18%) and single-ended allyl polyether (EO: PO = 4: 6) under the protection of N2 gas at 80 ～ 100 ℃ and Pt complex catalyst. To get light yellow modified polyether silicone oil. Polyether modified silicone oil 650g white carbon black silicon paste (same as above) 150g allyl polyether (EO: PO = 1: 1) 150g