A kind of synthetic method of ternary copolymerization block silicone oil

Abstract

The invention discloses a synthesis method for terpolymer block silicone oil. The synthesis method is characterized by comprising the steps of: (A) adding 100 parts by weight of dimethyl cyclosiloxane or octamethyl cyclotetrasiloxane, 4 parts by weight of epoxy-terminated disiloxane and 15 parts by weight of dimethylacetamide, raising the temperature to 70-80 DEG C, adding 0.02-0.1 part by weight of base catalyst, raising the temperature to 110-120 DEG C, reacting for 3-4 hours, slowly opening vacuum, extracting solvents and low molecular weight matters, continuously raising the temperature to 140-145 DEG C, maintaining the temperature and the vacuum for 2 hours, so as to obtain epoxy silicone oil; and (B) adding 80-100 parts by weight of epoxy-terminated silicone oil, 6-30 parts by weight of polyether polyol and 150 parts by weight of isopropyl alcohol, carrying out backflow reaction for 6-15 hours at 80-86 DEG C, and decompressing and removing the isopropyl alcohol or adding a propylene glycol displacement solvent, so as to obtain amino polyether block silicone oil. By utilizing the terpolymer block silicone oil disclosed by the invention, the fabric has good hand feel, namely fluffy feel and smooth feel, cannot be yellowed or is slightly yellowed.

Description

technical field [0001] The invention relates to a method for synthesizing modified silicone oil, in particular to a method for synthesizing terpolymerized block silicone oil. Background technique [0002] At present, softeners based on various amino-modified silicone oil emulsions are widely used in the finishing of textiles such as cotton, silk, wool and polyester. The finished fabrics are soft, smooth, beautiful, washable and comfortable to wear. performance. Such products have been accepted by people. The shortcomings are mainly manifested in the fact that the fabrics treated by it are hydrophobic, feel stuffy and difficult to wash when worn; the light-colored and white fabrics treated with it will appear yellowing to varying degrees after high-temperature baking, and many The stability of the amino-modified silicone emulsion is very poor, and the phenomenon of "breaking demulsification and floating oil" often occurs during storage, transportation and application; stick...

AI Technical Summary

Problems solved by technology

The shortcomings are mainly manifested in the fact that the fabrics treated by it are hydrophobic, feel stuffy and difficult to wash when worn; the light-colored and white fabrics treated with it will appear yellowing to varying degrees after high-temperature baking, and many The stability of amino-modified silicone emulsion is very poor, and the phenomenon of "breaking demulsification and floating oil" often occurs in the process of storage, transportation and application; sticking phenomenon occurs in the process of padding and rolling

[0003] In order to overcome the above-mentioned shortcomings of traditional amino silicone oil, various methods have been adopted to improve it, such as side chain polyether modification, epoxy modification or carboxyl modification, the modified silicone oil has improved stability, but the hand feel is deviated.