Study on the Synthesis Process of Silicone Oil Defoamer Modified by Emulsion Polyether
A new type of emulsion polyether modified silicone oil defoaming agent was synthesized.The polyether co-modified silicone oil used in the defoaming agent were synthesized by molecular design.The optimum conditions for synthesis of polyether co-modified silicone oil are as follows:reaction time is 2 h,catalyst dosage is 0.2 mL,low hydrogen containing silicone oil/polyether L61 is 1:2,reaction temperature is 110℃,the yield can reach 77%.The preparation of antifoaming agent with emulsifier,thickening agent,etc.,has good antifoaming performance.
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