Process for the production of light-stable polyisocyanates...

Details Process for the production of light-stable polyisocyanates... Process for the production of light-stable polyisocyanates...

C - Chemistry, Metallurgy

07

C

C07C 275/60 (2006.01) C07C 273/18 (2006.01) C08G 18/73 (2006.01) C08G 18/75 (2006.01) C08G 18/78 (2006.01)

Patent

CA 2148783

The present invention relates to a process for the production of polyisocyanates containing allophanate groups and having aliphatically and/or cycloaliphatically bound isocyanate groups by reacting organic compounds containing urethane groups with organic polyisocyanates containing aliphatically and/or cycloaliphatically bound isocyanate groups in the presence of tin compounds and to the use of these polyisocyanates, optionally blocked with blocking agents for isocyanate groups, as an isocyanate component in the production of polyurethanes, in particular polyurethane coatings.

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