Polyisocyanate compositions containing reversibly blocked catalysts and addition products of sulfonyl isocyanates with catalysts having a tin(II)- or tin(IV)-carboxylate structure

US4824595A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Roland Richter · Cologne, DE
• Hanns P. Muller · Leverkusen, DE
• Rudolf Hombach · Leverkusen, DE
• Manfred Dollhausen · Odenthal, DE
• Geza Avar · Leverkusen, DE
• Hans-Albrecht Freitag · Bensberg, DE

Key dates

• Filing date: Jul 23, 1984
• Grant date: Apr 25, 1989
• Expiry date: Jul 23, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/24
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to polyisocyanate compositions containing reversibly blocked catalysts for the isocyanate addition reaction, characterized in that they contain PA0 (a) at least one organic polyisocyanate, PA0 (b) at least one addition product dissolved or dispersed in the polyisocyanate compositions, of a sulfonyl isocyanate with a tertiary amine and/or with a catalyst having a tin(II)- or tin(IV)-carboxylate structure as the reversibly blocked catalyst. The present invention also relates to a process for producing these polyisocyanate compositions and to the use of new polyisocyanate compositions as reactants for compounds containing isocyanate-reactive groups for the production of isocyanate addition products such as polyurethane plastics using a one-component or two-component principle. The present invention finally relates to the latent polyurethane catalysts prepared from a sulfonyl isocyanate and a tin(II)- or tin(IV)-carboxylate.