POLYMER FOR INCREASING THE ELECTRICAL RESISTANCE OF A POLYURETHANE COMPOSITION
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United States of America Patent
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Issued Date -
Dec 15, 2022
app pub date -
Dec 16, 2020
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Dec 16, 2020
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Abstract
A poly(meth)acrylate urethane polymer, obtained from the reaction of at least one monomeric diisocyanate and a poly(meth)acrylate polyol having an OH number in the range from 50 to 200 mg KOH/g in an NCO/OH ratio of at least 3/1, followed by removal of a majority of the monomeric diisocyanate by means of a suitable separation method, wherein it has an NCO content in the range from 2.5% to 8% by weight, based on the poly(meth)acrylate urethane polymer, and a residual content of unconverted monomeric diisocyanates of not more than 0.5% by weight, and to the use thereof as additive and to moisture-curing polyurethane compositions.
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