Water-based high-solid foaming resin for synthetic leather and preparation method of water-based high-solid foaming resin
A technology of foaming resin and synthetic leather, which is applied in the field of water-based high-solid foaming resin and its preparation for synthetic leather, and can solve the problem that the stability and mechanical properties cannot meet the application requirements, and the distribution of hydrophilic groups of water-based polyurethane resin is not good. Uniformity, large polyurethane resin particles, etc., to achieve the effects of easy industrial production control, fast drying speed, and good water resistance
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Embodiment 1
[0039] 240 g of the polytetrahydrofuran etheriol and 33 g of sulfonic acid type polyester polyol were added to four flasks equipped with a stirrer, a thermometer, heated to 110 ° C, vacuum dehydration, vacuum display - 0.08MPa, 1.5h after cooling 75 ° C or lower, the vacuum tube is replaced with a condensate returning tube, and 81.00 g of IPDI and 3G HDI were put into dotutyl, 0.06 g of dotutilat, tin, mixed, and raised to 85-90 ° C, reaction for 2 hours; The temperature of the prepolymer was 60 ° C, add 5.00 g of neopad diol and 10.6 g of dihydroxymethrophylation, and the viscosity of the acetone control reaction system was added, and the chain-chain reaction was performed under 70-75 ° C, and the time was 3. Hour, prepolymer is prepared. The prepolymer was transferred into the emulsifue, adding 7.20 g of triethylamine, high-speed shear, water temperature is 20-25 ° C, and finally adding hydrate 10% aqueous solution 12.3g dispersion uniform, vacuum removal acetone, Get a water-ba...
Embodiment 2
[0041]250 g of polyethylene glycol and 36 g of sulfonic acid type polyester polyols were added to four flasks equipped with a stirrer, heated to 120 ° C, vacuum dehydration, vacuum degree of -0.09MPa, 1.5 h, down to 75 If the vacuum tube is replaced with a condensate return tube, 62.00 g of ipdi and 13 g of HDi, octoate is 10.09 g, mix well, and temperature rise to 85-90 ° C, reaction for 2 hours; reduce the temperature of the resulting prepolymer To 60 ° C, 2.00 g of new pentanediol, 1.50 g of trimethylglycol and 9.9 g of dihydroxymethyl aionic acid were added, and the viscosity of acetone controlled reaction system was added, and the chain-chain reaction was performed under 70-75 ° C. The time is 3 hours, and the prepolymer is obtained. The prepolymer was transferred into the emulsifue, and 6.70 g of triethylamine was added, and the high-speed shear was used to add water, and the water temperature was 20-25 ° C, and finally the hydrate 10% aqueous solution was 11.30g dispersion ...
Embodiment 3
[0044] 190 g of polypropylene glycol and 28 g sulfonic acid type polyester polyol were added to four flasks equipped with a stirrer, heated to 120 ° C, vacuum dehydration, vacuum degree of -0.08MPa, 1.5 h after cooling to 75 ° C Hereinafter, the vacuum tube is replaced with a condensate return tube, and 57.00 g of ipdi is put into octoctoate, Ti Tin is 10.15g, mixed up to 85-90 ° C, and the reaction is 1.5 hours; the temperature of the resulting prepolymer is reduced to 60 ° C. 3.00 g of new glutanediol and 6.00 g of dihydroxymethyl acetic acid were added, and the viscosity of acetone was added to 70-75 ° C, and the prepolymer was prepared at 70-75 ° C for 2.5 hours. The prepolymer was transferred into the emulsion, and 4.52 g of triethylamine was added, and the water was applied under high speed shear, and the water temperature was 20-25 ° C, and finally added an isotridodalamine 10% aqueous solution 25.6g dispersion uniform, vacuum removal Acetone, ie, well-hydrated high-solid p...
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