Polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink
A technology of polyisocyanate and isocyanate, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of high resistivity and large thickness of conductive coating
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Embodiment 1
[0049] The preparation of embodiment 1 polyisocyanate prepolymer
Embodiment 1-1
[0051] Add 4 kg of polyoxypropylene diol 2000 and 1 kg of polyoxypropylene triol 1000 to a four-necked flask equipped with a stirrer, a thermometer, and a nitrogen protection device after removing water, and add 5.5 kg of isophorone diisocyanate and Diphenylmethane-4,4'-diisocyanate (mass ratio 1:1), mixed evenly, heated to 80°C, reacted under nitrogen atmosphere for 3 hours, cooled to room temperature, and obtained polyisocyanate prepolymer.
Embodiment 1-2
[0053] The mass ratio of isophorone diisocyanate and diphenylmethane-4,4'-diisocyanate was replaced from 1:1 to 3:1, and the rest was the same as in Example 1 to prepare a polyisocyanate prepolymer.
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