Fabric coating slurry and preparing method thereof
A technology for coating pulp and fabrics, which is applied in textiles, papermaking, and fiber treatment, etc. It can solve the problems of poor oil resistance and water resistance, poor light stability and thermal stability, and small contact angle of the film to achieve oil resistance. And the effect of excellent water resistance, good fullness and good weather resistance
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[0029] Example 1
[0030] It adopts the following method to prepare epoxy soybean oil modified waterborne polyurethane:
[0031] First, add epoxidized soybean oil, diethanolamine and isopropanol to the reactor, heat up to 75°C, add tetrafluoroboric acid catalyst, keep the temperature for 20 hours, after the reaction, distill out isopropanol, wash with water and dry to obtain the ring Oxygen soybean oil polyol, wherein the mass of diethanolamine is 70% of the mass of epoxy soybean oil; the isopropanol is 200% of the mass of epoxy soybean oil; the tetrafluoroboric acid is 5% of the mass of epoxy soybean oil ;
[0032] Then, under the protection of nitrogen, the obtained epoxidized soybean oil polyol, polyoxypropylene glycol, and dicyclohexylmethane diisocyanate are added to the reactor, and the polyoxypropylene glycol is of epoxy soybean oil polyol quality 10%, the dicyclohexylmethane diisocyanate is 5% of the mass of the epoxy soybean oil polyol; the temperature is raised to 85°C, t...
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[0035] Example 2
[0036] It adopts the following method to prepare epoxy soybean oil modified waterborne polyurethane:
[0037] First, add epoxidized soybean oil, diethanolamine and isopropanol to the reactor, heat to 77°C, add tetrafluoroboric acid catalyst, keep it for 24 hours, after the reaction is over, distill out isopropanol, wash with water and dry to obtain ring Oxygen soybean oil polyol, wherein the mass of diethanolamine is 85% of the mass of epoxy soybean oil; the isopropanol is 225% of the mass of epoxy soybean oil; the tetrafluoroboric acid is 5% of the mass of epoxy soybean oil ;
[0038] Then, under the protection of nitrogen, the obtained epoxidized soybean oil polyol, polyoxypropylene glycol, and dicyclohexylmethane diisocyanate are added to the reactor, and the polyoxypropylene glycol is of epoxy soybean oil polyol quality 13%, the dicyclohexylmethane diisocyanate is 6% of the mass of the epoxy soybean oil polyol; the temperature is raised to 87°C, and the organ...
Example Embodiment
[0041] Example 3
[0042] It adopts the following method to prepare epoxy soybean oil modified waterborne polyurethane:
[0043] First, add epoxidized soybean oil, diethanolamine and isopropanol to the reactor, heat up to 80°C, add tetrafluoroboric acid catalyst, keep it for 28 hours, after the reaction, distill out isopropanol, wash with water and dry to obtain the ring Oxygen soybean oil polyol, wherein the mass of diethanolamine is 100% of the mass of epoxy soybean oil; the isopropanol is 250% of the mass of epoxy soybean oil; and the tetrafluoroboric acid is 5% of the mass of epoxy soybean oil ;
[0044] Then, under the protection of nitrogen, the obtained epoxidized soybean oil polyol, polyoxypropylene glycol, and dicyclohexylmethane diisocyanate are added to the reactor, and the polyoxypropylene glycol is of epoxy soybean oil polyol quality 15%, the dicyclohexylmethane diisocyanate is 7% of the mass of the epoxy soybean oil polyol; the temperature is raised to 90°C, and the o...
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