Environment-friendly alcohol-soluble polyurethane resin and preparation method thereof
A polyurethane resin, alcohol-soluble technology, applied in the field of electronic chemicals, can solve the problems of large damage to the human body, poor environmental protection, low viscosity, etc., and achieve the effects of fast drying, reduced toxicity and low odor
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] First put 260kg of soybean oil, 250kg of linseed oil, 75kg of trimethylolpropane and 696kg of TDI into the reactor, raise the temperature to 80°C, and keep it warm for 2 hours; cool down to 60°C, add 75kg of trimethylolpropane and 100kg of acetone, and heat up to 70°C ℃, heat preservation reaction for 1.5 hours; then lower the temperature to 55 ℃, throw acetone 50kg, neopentyl glycol 25kg, trimethylolpropane 10kg and epoxy resin 50kg, at 50 ℃, heat preservation reaction for 4 hours; cool down to 30 ℃, add Dilute with absolute ethanol and stir for 0.5 hours; vacuumize at 60°C and -0.075MPa to remove acetone in the system to obtain an environmentally friendly alcohol-soluble polyurethane resin.
Embodiment 2
[0030] First put 170kg of soybean oil, 170kg of linseed oil, 170kg of castor oil, 75kg of trimethylolpropane and 696kg of TDI into the reactor, raise the temperature to 80°C, and keep it warm for 2 hours; cool down to 60°C, add 75kg of trimethylolpropane and 100kg of acetone , heat up to 70°C, heat preservation reaction for 1.5 hours; then cool down to 55°C, throw acetone 50kg, neopentyl glycol 25kg, trimethylolpropane 10kg and epoxy resin 50kg, at 50°C, heat preservation reaction for 4 hours; cool down to Add anhydrous ethanol to dilute at 30°C and stir for 0.5 hours; vacuumize at 60°C and -0.025MPa to remove acetone in the system to obtain an environmentally friendly alcohol-soluble polyurethane resin.
Embodiment 3
[0032] First put 170kg of soybean oil, 170kg of linseed oil, 170kg of castor oil, 37.5kg of trimethylolpropane and 696kg of TDI into the reactor, raise the temperature to 80°C, and keep the temperature for 2 hours; 100kg of acetone, heat up to 70°C, heat preservation reaction for 1.5 hours; then cool down to 55°C, throw acetone 50kg, neopentyl glycol 25kg, trimethylolpropane 10kg and epoxy resin 50kg, at 50°C, heat preservation reaction for 4 hours; Cool down to 30°C, add absolute ethanol to dilute, stir for 0.5 hours; vacuum at 60°C, -0.1MPa, remove acetone in the system to obtain an environmentally friendly alcohol-soluble polyurethane resin.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More