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US 2010/0249275 A1Published application
Silicone composition emulsion and method for preparing the same
AssigneeCAO ,Zhiping
InventorsFei Wu, Zhiping Cao, Xiang Zhong, Yong Xu
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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.
Claims6
A method for preparing a silicone composition emulsion, comprising:
- mixing a high-viscosity silicone composition and low-molecular-weight polysiloxane under strong stirring for 20-40 min, to mix and infiltrate the high-viscosity silicone composition and low-molecular-weight polysiloxane fully each other;
- adding an emulsifier, and stirring for 15-45 min;
- raising the temperature of the system to 55-85° C. and while maintaining at this temperature, adding water slowly, and increasing the stirring speed, such that the W/O emulsion is converted into an O/W emulsion, and a mass concentration of 20-60% is achieved initially;
- further emulsifying the emulsion through a colloid mill;
- and
- diluting with water to a desired concentration.
3 more elements
Dependencies are inferred from the claim text.