Special priming paint for heavy machinery
A technology for heavy machinery and primers, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of low pollution, low cost performance, anti-corrosion and insufficient supporting construction performance, and achieve low comprehensive cost, fast drying time, and insulation. good effect
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Embodiment 1
[0027] Put 450g of bisphenol A into the dissolution kettle, then pass through 900g of epichlorohydrin, heat the jacket with water vapor and raise the temperature to above 70°C to dissolve. After completely dissolving, use a pump to press it into a stirred reactor, use quaternary ammonium salt as a catalyst, slowly add 265mL of NaOH solution with a mass fraction of 30%, and control the reaction temperature during this process to 50-55°C. After the dropwise addition of the NaOH solution is completed, raise the temperature to 70-75°C and keep for 1 hour, then raise the temperature to 100°C and reduce the pressure to 94.66kPa, and recover excess epichlorohydrin for recycling. After that, add 20% methyl isobutyl ketone (MIBK) to the mass of the resin solution (previously prepared mixture) to dissolve the resin solution, stir and let stand to separate layers. Add the resin liquid and methyl isobutyl ketone solution in the upper layer into the water separator, stir, heat, maintain, s...
Embodiment 2
[0030]Put 500g of bisphenol A into the dissolution kettle, then pass through 1200g of epichlorohydrin, heat the jacket with water vapor and raise the temperature to above 70°C to dissolve. After it is completely dissolved, use a pump to press it into a stirred reactor, use quaternary ammonium salt as a catalyst, and slowly add 260mL of NaOH solution with a mass fraction of 30% dropwise, and control the reaction temperature during this process to 50-55°C. After the dropwise addition of the NaOH solution is completed, raise the temperature to 70-75°C and keep for 1 hour, then raise the temperature to 100°C and reduce the pressure to 94.66kPa, and recover excess epichlorohydrin for recycling. After that, add 25% methyl isobutyl ketone (MIBK) to the mass of the resin solution (previously prepared mixture) to dissolve the resin solution, stir and let stand to separate layers. Add the resin liquid and methyl isobutyl ketone solution in the upper layer into the water separator, stir,...
Embodiment 3
[0033] Put 400g of bisphenol A into the dissolution kettle, then pass through 850g of epichlorohydrin, heat the jacket with water vapor and raise the temperature to above 70°C to dissolve. After completely dissolving, use a pump to press it into a stirred reactor, use quaternary ammonium salt as a catalyst, slowly add 250mL of NaOH solution with a mass fraction of 30%, and control the reaction temperature during this process to 50-55°C. After the dropwise addition of the NaOH solution is completed, raise the temperature to 70-75°C and keep for 1 hour, then raise the temperature to 100°C and reduce the pressure to 94.66kPa, and recover excess epichlorohydrin for recycling. After that, add 20% methyl isobutyl ketone (MIBK) to the mass of the resin solution (previously prepared mixture) to dissolve the resin solution, stir and let stand to separate layers. Add the resin liquid and methyl isobutyl ketone solution in the upper layer into the water separator, stir, heat, maintain, s...
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Abstract
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