Preparation method of low-dissociation high-intermiscibility polyurethane curing agent
A polyurethane curing agent and compatibility technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of environmental protection, low free, low viscosity, high solid content, high compatibility, etc., and achieve good environmental protection effect, high compatibility, good compatibility
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Embodiment 1
[0020] As a specific example one of the present invention, 60% of toluene diisocyanate, 12% of trimethylolpropane, 25% of ethyl acetate, 2.5% of compound polyol ethers, 0.2% of catalyst and 0.3% polymerization inhibitor, and then prepared according to the above method, the polyurethane curing agent produced has the advantages of low free, low viscosity, high solid content and high compatibility.
Embodiment 2
[0021] Embodiment two, can weigh 55% toluene diisocyanate, 10% trimethylolpropane, 25% ethyl acetate, 9.8% compound polyol ethers, 0.1% catalyst and 0.1% Inhibitors were then prepared as described above.
Embodiment 3
[0022] Embodiment three, can weigh 50% toluene diisocyanate, 8% trimethylolpropane, 25% ethyl acetate, 16.7% complex polyol ethers, 0.1% catalyst and 0.2% Inhibitors were then prepared as described above.
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