Abstract: A silicone composition emulsion and a method for preparing the same are provided. The method is characterized in that a low-molecular-weight polysiloxane and an emulsifier are added into a high-viscosity silicone composition. The low-molecular-weight polysiloxane has a viscosity of 5-3,000 mPa·s, and the emulsifier is an nonionic surfactant. The amount of the low-molecular-weight polysiloxane is 5-50 parts and the amount of the emulsifier is 40-150 parts, based on 100 parts of the high-viscosity silicone composition.

Abstract: A new-type papermaking wet-end defoamer and methods of making relating to the field of the chemical preparations for use in papermaking. The defoamer including 5˜99% FAME (fatty acid methyl ester) derivatives having a general structural formula of R1CO(EO)x(PO)yOCH3, molecular weight of 300˜3000 and a turbidity point of 20˜80° C.; which are the products of the addition reaction of FAME as an initiator and EO (ethylene oxide) and/or PO (propylene oxide) under the action of catalyst. The defoamer also including 0.1˜80% polyether having a general structural formula of R2{M(EO)m(PO)nH}a, a molecular weight of 500˜8000 and a turbidity point of 10˜80° C. The defoamer also including a 0.1˜70% modified polyether, with a general structural formula of R2{M(EO)m(PO)nR3}a. The defoamer also including 0.1˜20% natural oil and fat.

Abstract: A silicone composition emulsion and a method for preparing the same are provided. The method is characterized in that a low-molecular-weight polysiloxane and an emulsifier are added into a high-viscosity silicone composition. The low-molecular-weight polysiloxane has a viscosity of 5-3,000 mPa·s, and the emulsifier is an nonionic surfactant. The amount of the low-molecular-weight polysiloxane is 5-50 parts and the amount of the emulsifier is 40-150 parts, based on 100 parts of the high-viscosity silicone composition.