Cationic organosilicon polymer, microemulsion and preparation method thereof
A silicone and cationic technology, applied in plant fiber, improved handle fiber, biochemical fiber treatment, etc., can solve the problem that the hydrophilicity requirement can not meet the requirements, etc., to improve the fabric feel, the best antibacterial rate, increase the The effect of fabric hydrophilicity
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[0041] The present invention provides a kind of preparation method of cationic organosilicon polymer, comprises the steps:
[0042] (1) 3-(2,3-epoxypropoxy)propylmethyldiethoxysilane and trimethylamine hydrochloride are reacted in the presence of a solvent to prepare a cationic silane coupling agent;
[0043] (2) reacting the cationic silane coupling agent and the organosilicon monomer under the action of a catalyst to generate the cationic organosilicon polymer.
[0044] In the above-mentioned steps (1), the reaction equation of 3-(2,3-epoxypropoxy)propylmethyldiethoxysilane and trimethylamine hydrochloride is as follows:
[0045]
[0046] Among them, the mass ratio of 3-(2,3-glycidoxy)propylmethyldiethoxysilane to trimethylamine hydrochloride is (2~3):1, for example, it can be 2:1, 2.1 :1, 2.2:1, 2.3:1, 2.4:1, 2.5:1, 2.6:1, 2.7:1, 2.8:1, 2.9:1, 3:1, etc.
[0047] The reaction temperature in step (1) is 60-90°C, preferably, the reaction temperature in step (1) is 65-80°C...
Embodiment 1
[0057] (1) Preparation of cationic silane coupling agent
[0058] In a 1000mL four-neck flask equipped with a stirrer, condenser, thermometer and nitrogen tube, add 510g of 3-(2,3-epoxypropoxy)propylmethyldiethoxysilane, 190g of trimethylamine hydrochloride Salt, 50 grams of isopropanol, temperature at 70-75°C, heat preservation reaction for 5 hours, vacuumize to remove low-molecular substances, and obtain a light yellow and transparent cationic silane coupling agent, with a non-volatile content of ≥99.6% (110°C / 3h) . (2) Preparation of Cationic Silicone Polymer
[0059] In a 1000mL three-necked flask equipped with a stirrer, a condenser, and a thermometer, add 40g of the cationic silane coupling agent synthesized above, add 400g of hydroxyl-terminated linear silicone oil with a viscosity of 40cs, stir and heat up to 85-90°C, add Potassium hydroxide 0.8g, control the reaction temperature at 105-110°C, keep warm for 5 hours, vacuumize to remove low molecular weight substances...
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