Method of preparing for anamide modified polysiloxane
A technology of amide modification and polysiloxane, which is applied in the direction of improved hand fibers, fiber treatment, textiles and papermaking, etc. It can solve the problems of different effects and easy mutual constraints, and achieve softness improvement, hydrophilicity and The effect of increasing softness and wrinkle recovery angle
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Embodiment 1
[0057] (1) get 0.25mol cyclohexane-1,3 diisocyanate and join in the four-necked flask that thermometer, condenser tube, magnetic stirring are housed, to wherein add 15mL acetone stirring and dissolving, stir and be warming up to 50 under nitrogen protection condition ℃, then slowly add 0.125mol double-ended aminopropyl polysiloxane SA (n=10) dropwise to it, after the addition is completed, the temperature is raised to 70 ℃, and 3 drops of dibutyltin dilaurate are added as a catalyst, and the reaction is carried out for 3h, to obtain an isocyanate group-terminated polysiloxane prepolymer;
[0058] (2) The amide-modified polysiloxane prepolymer prepared in step (1) was lowered to room temperature, 0.1 mol of succinimide was added, and the temperature was continued to rise to 80° C. for 4 hours to obtain the final product. Cool to room temperature, add water under vigorous stirring for dispersion, and obtain amide-modified polysiloxane, which is a light yellow and transparent vis...
Embodiment 2
[0062] (1) Get 0.25mol cyclohexane-1,3 diisocyanate and add it to the four-necked flask equipped with thermometer, condenser tube and magnetic stirring, add 15mL dioxane to it, stir and dissolve, stir and dissolve under nitrogen protection The temperature was raised to 50 °C, 0.125 mol SA was slowly added dropwise to it, the temperature was raised to 70 °C after the addition was completed, 3 drops of dibutyltin dilaurate were added as a catalyst, and the reaction was carried out for 3 h to obtain an isocyanate group-terminated polysiloxane prepolymer. ;
[0063] (2) Same as step (2) in Example 1, the capping ratio is calculated with reference to the method for calculating the capping ratio above, and the calculation results are shown in Table 1.
Embodiment 3
[0065] (1) get 0.25mol cyclohexane-1,3 diisocyanate and join in the four-necked flask equipped with thermometer, condenser tube, magnetic stirring, add 15mL methyl ethyl ketone to it and stir and dissolve, stir and be warming up to 50 under nitrogen protection condition ℃, slowly add 0.125mol SA dropwise thereto, and after the addition is completed, the temperature is raised to 70 ℃, 3 drops of dibutyltin dilaurate are added as a catalyst, and the reaction is carried out for 3 hours to obtain an isocyanate group-terminated polysiloxane prepolymer;
[0066] (2) Same as step (2) in Example 1, the capping ratio is calculated with reference to the method for calculating the capping ratio above, and the calculation results are shown in Table 1.
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