Compounds containing allophanate, isocyanate and ortho ester...

Details Compounds containing allophanate, isocyanate and ortho ester... Compounds containing allophanate, isocyanate and ortho ester...

C - Chemistry, Metallurgy

08

G

C08G 18/78 (2006.01) C07C 275/60 (2006.01)

Patent

CA 2542583

The present invention relates to a process for preparing compounds which contain allophanate groups, free NCO groups and polyortho ester groups by reacting A) one or more aliphatic and/or cycloaliphatic polyisocyanates with B) one or more polyortho esters containing at least one hydroxyl group per molecule to form NCO-functional polyurethanes and then reacting some or all of the urethane groups to form allophanate groups. The present invention relates to compounds obtained by this process and to their use as binders in coating, sealant and adhesive compositions that also contain catalysts and optionally additives.

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