Preparation method for composite type phosphate ester leather fat-liquoring agent of polyurethane containing nonionic structures
A compound phosphate ester, non-ionic technology, applied in leather impregnation, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc., to improve emulsifying ability and permeability , Low freezing point, good emulsifying effect
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Embodiment 1
[0034] Synthesis of polyurethane containing non-ionic structure:
[0035]Under the conditions of 120°C and a vacuum of 0.09MPa, the polyoxypropylene ether and the polyoxyethylene monomethyl ether with a number average molecular weight of 1000 and 750 were respectively subjected to vacuum distillation to remove moisture; Add 50g of the above-mentioned dehydrated polyoxypropylene ether and 0.03g of dibutyltin dilaurate (DBTDL), raise the temperature to 80°C, and stir for 30 minutes; add 11.1g of isophorone diisocyanate (IPDI ), react for 2h; add 37.5g of polyoxyethylene monomethyl ether to the reaction vessel, and react for 2h at the above temperature to obtain polyurethane containing non-ionic structure.
[0036] Synthesis of composite phosphate fatliquoring agent containing non-ionic structure polyurethane:
[0037] Distill the polyoxypropylene ether (PPG) with a number average molecular weight of 1000 under reduced pressure at 120°C and a vacuum of 0.09MPa to remove water; a...
Embodiment 2
[0039] Synthesis of polyurethane containing non-ionic structure:
[0040] Under the conditions of 120°C and a vacuum of 0.09MPa, the polyoxypropylene ether and the polyoxyethylene monomethyl ether with a number average molecular weight of 2000 and 1000 were respectively subjected to vacuum distillation to remove moisture; Add 100g of the above-mentioned dehydrated polyoxypropylene ether and 0.03g of dibutyltin dilaurate (DBTDL), raise the temperature to 80°C, and stir for 30 minutes; add 11.1g of isophorone diisocyanate (IPDI ), react for 2h; add 50g of polyoxyethylene monomethyl ether to the reaction vessel, and react for 2h at the above temperature to obtain polyurethane containing non-ionic structure.
[0041] Synthesis of composite phosphate fatliquoring agent containing non-ionic structure polyurethane:
[0042] Distill the polyoxypropylene ether (PPG) with a number average molecular weight of 2000 under reduced pressure at 120°C and a vacuum of 0.09MPa to remove water; ...
Embodiment 3
[0044] Synthesis of polyurethane containing non-ionic structure:
[0045] Under the conditions of 120°C and a vacuum of 0.09MPa, the polyoxypropylene ether and the polyoxyethylene monomethyl ether with a number average molecular weight of 1000 and 500 were respectively subjected to vacuum distillation to remove moisture; Add 40g of the above-mentioned dehydrated polyoxypropylene ether and 0.03g of dibutyltin dilaurate (DBTDL), raise the temperature to 80°C, and stir for 30 minutes; dropwise add 8.9g of isophorone diisocyanate (IPDI ), react for 2h; add 20g of polyoxyethylene monomethyl ether to the reaction vessel, and react for 2h at the above temperature to obtain polyurethane containing non-ionic structure.
[0046] Synthesis of composite phosphate fatliquoring agent containing non-ionic structure polyurethane:
[0047] Distill the polyoxypropylene ether (PPG) with a number average molecular weight of 1000 under reduced pressure at 120°C and a vacuum of 0.09MPa to remove w...
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