Use of metal salts of a carboxylic acid in the production of polyurethane systems

Abstract

A catalyst system which is suitable for catalyzing the production of polyurethane systems is provided. The catalyst system contains a metal salt of a carboxylic acid to whose carbonyl carbon a hydrogen atom or a hydrocarbon radical is bound, with the proviso that the carboxylic acid does not have exclusively a single ethyl or n-propyl branch in the 2 position.

What is claimed is: 
     
         1 . A polyurethane system comprising at least one organic isocyanate and at least one polyol, wherein said organic isocyanate has at least two isocyanate functions and said polyol has at least two groups reactive with isocyanate, admixed with a metal salt of a carboxylic acid bound by its carbonyl carbon to a saturated hydrocarbon group containing 8 to 13 carbon atoms, wherein said saturated hydrocarbon group is either an unbranched alkyl radical or has only methyl group branches. 
     
     
         2 . The polyurethane system according  claim 1 , further comprising at least one organic solvent. 
     
     
         3 . The polyurethane system according to  claim 2 , wherein said organic solvent is an organic aprotic solvent. 
     
     
         4 . The polyurethane system according to  claim 1 , wherein the metal in said metal salt is selected from Groups Ia, IIa, IVa, Va, Ib, IIb, and VIIIb of the Periodic Table of the Elements. 
     
     
         5 . The polyurethane system according to  claim 1 , wherein the metal in said metal salt is selected from Na, K, Mg, Ca, Sn, Pb, Bi, Zn, Cu, Fe, Co and Ni. 
     
     
         6 . The polyurethane system according to  claim 1 , wherein the metal in said metal salt is Sn. 
     
     
         7 . The polyurethane system according to  claim 1 , wherein the polyurethane system is a polyurethane coating, a polyurethane adhesive, a polyurethane sealant, a polyurethane elastomer, a rigid polyurethane foam, a flexible polyurethane foam, a viscoelastic foam, an HR foam, a semirigid polyurethane foam, a thermoformable polyurethane foam, or an integral foam.