Waterproof coating prepolymer prepared based on polyurethane degradation product, and preparation method and application thereof
A technology for degradation products and waterproof coatings, applied in the direction of polyurea/polyurethane coatings, coatings, plastic recycling, etc., can solve problems such as high price, and achieve the effects of solving environmental problems, high promotion value, and high economic benefits
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Embodiment 1
[0039] S1. Break 100 parts of polyurethane elastomer product leftovers into the reaction kettle together with 10 parts of ethylene glycol and 1 part of catalyst potassium acetate;
[0040] S2. Heating, controlling the reaction temperature to 180° C., the reaction time is 3 hours, and discharging to obtain a polyurethane degradation product.
Embodiment 2
[0042] S1. 100 parts of waste polyurethane elastomer products are broken, and 5 parts of ethylene glycol, 10 parts of propylene glycol, and 3 parts of catalyst ethylenediamine are added to the reactor;
[0043] S2. Heating, controlling the reaction temperature to 230° C., the reaction time is 1 hour, and discharging to obtain a polyurethane degradation product.
Embodiment 3
[0045] S1. Break 100 parts of polyurethane elastomer product leftovers into the reaction kettle together with 10 parts of diethylene glycol, 5 parts of butanediol, and 2 parts of catalyst ethanolamine;
[0046] S2. Heating, controlling the reaction temperature to 200° C., the reaction time is 2 hours, and discharging to obtain a polyurethane degradation product.
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