Hyperbranched epoxy resin modified waterborne polyurethane emulsion and preparation method thereof
A technology of water-based polyurethane and polyurethane emulsion, which is applied in the field of textile materials, can solve the problems of solvent resistance, water resistance, strength, low surface gloss and vividness, low molecular weight, lack of stability, etc. The effect of quantity and good physical properties
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Embodiment 1
[0028] (1) Mix 10 parts of diacetone acrylamide DAAM and 3 parts of bisphenol A epoxy resin in molar ratio, heat and react at 85° C. for 2 hours to obtain hyperbranched epoxy resin.
[0029] (2) In parts by weight, under a nitrogen atmosphere, add 1-2 parts of glucose to 10 parts of isophorone diisocyanate IPDI, mix well and add 10 parts of dehydrated polypropylene oxide diol, Heating and reacting at 70° C. for 30 minutes, then adding 3 parts of chain extender and catalyst, continuing to react for 30 minutes, adding acetone to adjust viscosity, and obtaining glucose-modified polyurethane.
[0030] (3) In parts by weight, add 3 parts of ethylenediamine to 20 parts of the hyperbranched epoxy resin prepared in step (1), dilute with acetone, heat and stir at 90°C for 2 hours, and then add 50 parts of the step (2) The prepared glucose-modified polyurethane and 7 parts of triethylamine were stirred and reacted at 70° C. for 4 hours to obtain a hyperbranched epoxy resin-modified aque...
Embodiment 2
[0032] (1) Mix 15 parts of di-o-chlorodianiline methane MOCA with 6 parts of bisphenol A epoxy resin in molar ratio, and heat and react at 90° C. for 3 hours to obtain a hyperbranched epoxy resin.
[0033] (2) In parts by weight, under a nitrogen atmosphere, add 2 parts of glucose to 30 parts of aromatic diphenylmethane diisocyanate MDI, mix well and add 20 parts of dehydrated polypropylene oxide diol, Heating and reacting at 90° C. for 50 minutes, then adding 15 parts of a chain extender and a catalyst, continuing the reaction for 40 minutes, adding acetone to adjust the viscosity, and obtaining glucose-modified polyurethane.
[0034] (3) In parts by weight, add 8 parts of ethylenediamine to 40 parts of the hyperbranched epoxy resin prepared in step (1), add acetone to dilute, heat and stir at 100°C for 2 hours, and then add 80 parts of the step (2) The prepared glucose-modified polyurethane and 15 parts of triethylamine were stirred and reacted at 75° C. for 4 hours to obtai...
Embodiment 3
[0036] (1) Mix 10 parts of di-o-chlorodianiline methane MOCA with 6 parts of bisphenol A epoxy resin in molar ratio, heat and react at 85-90° C. for 2-3 hours to obtain hyperbranched epoxy resin.
[0037] (2) In parts by weight, under a nitrogen atmosphere, add 2 parts of glucose to 10 parts of aromatic diphenylmethane diisocyanate MDI, mix well and add 20 parts of dehydrated polypropylene oxide diol, Heating and reacting at 70° C. for 50 minutes, then adding 15 parts of a chain extender and a catalyst, continuing the reaction for 30 minutes, adding acetone to adjust the viscosity, and obtaining glucose-modified polyurethane.
[0038] (3) In parts by weight, add 3 parts of ethylenediamine to 40 parts of the hyperbranched epoxy resin prepared in step (1), dilute with acetone, heat and stir at 100°C for 2 hours, and then add 50 parts of the step (2) The prepared glucose-modified polyurethane and 7 parts of triethylamine were stirred and reacted at 75° C. for 4 hours to obtain a ...
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