Aqueous cold-cure flexible stabilizer formulations

1. A homogeneous cold-cure flexible foam activator blend comprising

from ≧2 to ≦25% by weight, of an aqueous stabilizer formulation,

from ≧1 to ≦20% by weight of a catalyst,

from ≧1 to ≦90% by weight of a blowing agent,

from ≧1 to ≦90% by weight, of at least one of a flame retardant, UV stabilizer, a dye, biocide, a pigment, a cell opener, a crosslinker and a foam-stabilizing substance,

with the proportion by weight of the above-mentioned components being selected so that the sum of the proportions by weight of the components is 100% by weight, based on the aqueous cold-cure flexible foam activator blend, and wherein said aqueous stabilizer formulation consisting essentially of:

a) from ≧0.1 to ≦80% by weight of at least one water-insoluble polysiloxane compound having a molecular weight of from ≧300 g/mol to ≦10 000 g/mol, said at least one water-insoluble polysiloxane compound is of the general formula (I):

where the radicals

R of formula (I) are each methyl,

the radicals

R 1 of formula (I) are each equal to R,

n of formula (I) is from ≧0 to 50,

m of formula (I) is from ≧0 to 50,

k is from ≧0 to 10, with the proviso that n+m of formula (I)≧2 and n+m of formula (I)≦70,

or of general formula III:

where the radicals

R of formula (III) are methyl,

the radicals

R 1 of formula (III) are each R,

n of formula (III) is from ≧2 to 30,

m of formula (III) is from ≧0 to ≦5,

b) ≧2% by weight of water,

c) ≧0.1% by weight of a surfactant, wherein said surfactant is other than a water-insoluble polysiloxane compound or a water-soluble siloxane,

d) from ≧0 to 10% by weight of additives selected from the group consisting of thickeners, antifreezes, organic solvents and other biocides, and

e) ≧0% by weight of water-soluble siloxane(s),

with the proportion by weight of components a)-e) are selected so that the sum of the proportions by weight of the components is not more than 100% by weight, based on the aqueous stabilizer formulation.

2. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 , wherein said at least one water-insoluble polysiloxane compound has a molecular weight of ≦10 000 g/mol and is of the general formula I.

3. The homogeneous cold-cure flexible foam activator blend as claimed in claim 2 , wherein

n of formula (I) is from 1 to 50,

m of formula (I) is from ≧1 to 20,

k is from ≧1 to 10.

4. The homogeneous cold-cure flexible foam activator blend as claimed in claim 2 , wherein said water is present in an amount from 2 to 99%, said surfactant is present in an amount from 0.1 to 90% by weight, said additive is present in an amount from ≧0 to 10% by weight, and said water-soluble siloxane(s) is present in an amount from ≧0 to 80% by weight.

5. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 , wherein the water-insoluble polysiloxane compound is a compound of formula III.

6. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 , wherein the ratio (Q) of the proportion by mass of the surfactants used to the proportion by mass of the water-insoluble siloxanes in the stabilizer solution is in the range 0<Q≦1.

7. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 , wherein the water-insoluble polysiloxanes have a molecular weight of from 300 to 4000 g/mol.

8. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 , wherein the water-insoluble polysiloxane compound has a maximum of 70 Si atoms.

9. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 , wherein the water-insoluble polysiloxane is a polydimethylsiloxane in which all radicals are methyl radicals and m=0 has a viscosity of from ≧0 to ≦100 mPas.

10. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 , wherein the surfactant is a water-soluble surfactant selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants and amphoteric surfactants.

11. The homogeneous cold-cure flexible foam activator blend as claimed in claim 1 comprising from ≧0.01 to ≦10% by weight, of said water-insoluble polysiloxane, based on the total weight of the homogeneous cold-cure flexible foam activator blend.