Use of reaction mixtures as encapsulating compounds

Details Use of reaction mixtures as encapsulating compounds Use of reaction mixtures as encapsulating compounds

C - Chemistry, Metallurgy

08

G

C08G 18/76 (2006.01) C08L 75/04 (2006.01) G01D 5/244 (2006.01) G05F 1/44 (2006.01)

Patent

CA 2087630

Mo3828 LeA 28792 THE USE OF REACTION MIXTURES AS ENCAPSULATING COMPOUNDS ABSTRACT OF THE DISCLOSURE This invention relates to encapsulating compounds comprising flowable reaction mixtures consisting essentially of A) a polyol component consisting of A1) at least one linear or slightly branched polyester polyol having an OH value of 40 to 500 mg KOH/g; A2) 0 to 50% by weight, based on Al), of at least one polyether polyol having an OH value of 40 to 500 mg KOH/g; and A3) 0 to 5% by weight, based on the weight of component A1), of at least one low molecular weight polyhydric alcohol having an OH value above 500 mg KOH/g; B) a polyisocyanate component consisting of a polyisocyanate mixture of the diphenyl methane series, which is liquid at room temperature and has an NCO content of 10 to 33% by weight, in such a quantity that, for every hydroxyl group of component A), there are 3 to 20 NCO groups of component B); C) catalysts for the trimerization of isocyanurate groups; and, optionally, D) other auxiliaries and additives. Mo3828

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