Production and use of metal salts of alkyl oxide and/or aryl alkyl oxide oligomers and polymers with acid end groups in the production of polyurethane systems

1. A polyurethane system comprising a compound of formula (I)

R 1 —O-[(AlkO) a -(ArylalkO) b ] x -{[(C(O)—Z] y —(CR 2 R 3 ) z } m —COO − M n+ 1/n   (I)

where

R 1 =linear, branched or cyclic hydrocarbon moiety,

Z=saturated or unsaturated, aliphatic, aromatic or mixed-aliphatic-aromatic, linear, branched, or cyclic hydrogen moiety having from 1 to 30 carbon atoms,

R 2 and R 3 =mutually independently H or a linear or branched hydrocarbon moiety having from 1 to 10 carbon atoms,

x=from 1 to 10

y=0 or an integer >1,

z=0 or an integer >1,

m=an integer >1,

n=an integer >1,

M=tin,

AlkO=identical or different alkylene oxide units,

ArylalkO=identical or different arylalkylene oxide units,

a=from 0 to 20,

b=from 0 to 20, and

a+b≧1, where the units indicated by the indices a and b can have blockwise or random distribution.

2. The polyurethane system as claimed in claim 1 , wherein it comprises from 0.01 to 5% by weight of compound (I), based on the entire composition of the polyurethane system.

3. The polyurethane system as claimed in 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.

4. The use of the polyurethane system as claimed in claim 1 , wherein said polyurethane system is a component of a refrigerator-insulation material, insulation sheet, sandwich element, pipe insulation, spray foam, single- & 1.5-component canister foam, wood-imitation product, modeling foam, packaging foam, mattress, furniture cushioning, automobile-seat cushioning, headrest, instrument panel, automobile-interior cladding product, automobile roof lining, sound-deadening material, steering wheel, shoe sole, carpet-backing foam, filter foam, sealant foam, sealant, or adhesive.

5. The polyurethane system as claimed in claim 1 , further comprising one or more organic solvents.

6. The polyurethane system as claimed in claim 1 , wherein R 1 is a linear or branched alkyl moiety having from 2 to 4 carbon atoms.

7. The polyurethane system as claimed in claim 1 , wherein Z is a cyclic hydrogen moiety having from 1 to 30 carbon atoms and at least one heteroatom selected from nitrogen, oxygen, sulfur, and phosphorus.

8. The polyurethane system as claimed in claim 1 , wherein R 2 and R 3 are both hydrogen.

9. The polyurethane system as claimed in claim 1 , wherein R 2 and R 3 are both methyl.

10. The polyurethane system as claimed in claim 1 , wherein the indices a and b have blockwise distribution.