Polysiloxane modified polyamide-amine as well as preparation method and application thereof
A polysiloxane and polyamide technology, which is applied in the field of polysiloxane-modified polyamide-amine and its preparation, can solve the problems of rare retanning agents, and achieve enhanced physical and mechanical properties and target product yield. High yield, dye uptake and improved dry and wet rubbing fastness
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[0024] A preparation method of a polysiloxane-modified polyamide-amine of the present invention comprises the following steps:
[0025] Step 1: add the terminal hydrogen-containing polysiloxane and allyl glycidyl ether with a molar ratio of 1:(0.8~1.0) into the reaction vessel, and add the catalyst chloroplatinic acid and the solvent, mix evenly, heat up and reflux, remove Reaction solvent, remove the solvent toluene at 70~90℃ after the reaction, then dissolve the solution in methanol, let stand for stratification, take the supernatant liquid, pour out the lower oily liquid, then evaporate the methanol under reduced pressure at 40~60℃ , to obtain a crude extract, and repeat the above purification operation 2 to 3 times to obtain a white transparent oily liquid, that is, a single-ended epoxy polysiloxane. The mass of the added chloroplatinic acid is 0.15-0.35% of the total mass of the reactants, the reaction temperature is 90-110 DEG C, and the reaction time is 4-6h.
[0026] ...
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[0028] Example 1
[0029] A preparation method of polysiloxane-modified polyamide-amine, comprising the following steps:
[0030] Step 1: Add the terminal hydrogen-containing polysiloxane and allyl glycidyl ether in the molar ratio of 1:0.8, the solvent toluene, and the catalyst chloroplatinic acid with a total mass of 0.15% of the reactants into the reaction vessel, and after mixing evenly The temperature was raised to reflux, refluxed at 90 °C for 4 h, after the reaction was completed, the reaction solvent, toluene, was removed at 70 to 90 °C, then the solution was dissolved in methanol, left to stand for stratification, the supernatant was taken, the lower oily liquid was poured out, and then 40 The methanol was evaporated under reduced pressure at ~60°C to obtain a crude extract, and the above purification operation was repeated 2 to 3 times to obtain a white transparent oily liquid, namely single-ended epoxy polysiloxane.
[0031] Step 2: The first-generation polyamide-a...
Example Embodiment
[0033] Embodiment 2
[0034] A preparation method of polysiloxane-modified polyamide-amine, comprising the following steps:
[0035] Step 1: Add the terminal hydrogen-containing polysiloxane and allyl glycidyl ether in the molar ratio of 1:0.9, the solvent toluene, and the catalyst chloroplatinic acid with a total mass of 0.15% of the reactants into the reaction vessel, and after mixing evenly The temperature was raised to reflux, refluxed at 90 °C for 5 h, after the reaction was completed, the reaction solvent, toluene, was removed at 70 to 90 °C, then the solution was dissolved in methanol, left to stand for stratification, the supernatant was taken, the lower oily liquid was poured out, and then 40 The methanol was evaporated under reduced pressure at ~60°C to obtain a crude extract, and the above purification operation was repeated 2 to 3 times to obtain a white transparent oily liquid, namely single-ended epoxy polysiloxane.
[0036] Step 2: The first-generation polyamid...
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