Process for reducing residual isocyanate

Details Process for reducing residual isocyanate Process for reducing residual isocyanate

C - Chemistry, Metallurgy

08

G

C08G 18/28 (2006.01) C08G 18/10 (2006.01) C08G 18/18 (2006.01) C08G 18/76 (2006.01)

Patent

CA 2459980

The invention provides a process for reducing the amount of monomeric polyisocyanate in a composition comprising a polymer or oligomer bearing isocyanate groups, the method comprising reacting the composition with a quenching agent, the quenching agent comprising an arylalkyl alcohol and an alkoxysilane bearing a secondary amino group.

La présente invention concerne un procédé permettant de réduire la teneur en polyisocyanate monomère d'une composition comprenant un polymère ou un oligomère porteur de groupes isocyanate. A cet effet, on fait réagir la composition avec un modérateur comprenant un alcool d'arylalkyle et un alcoxysilane porteur d'un groupe amino secondaire.

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