Linear silicone oil is a textile auxiliaries with many unique advantages. In order to improve certain properties and uses of linear silicone oils, modified silicone oils have been developed. It imparts different characteristics to silicone oil and broadens its application range. The modifying group may have both ends of the linear polysiloxane, a single end, a side chain, or both ends and a side chain. Therefore, there are many types of modified silicone oils.