Stabilization of cross-linked silane group containing polymers with phenomic stabilizers

Abstract

The present invention relates to a composition for cross-linking and stabilization of a polymer containing hydrolysable silane groups comprising a sulphonic acid as a silanol condensation catalyst characterized in that it comprises a stabilizer which is neutral or acidic, does not contain ester groups and is a compound according to formula (I): wherein R is an unsubstituted or substituted aliphatic or aromatic hydrocarbyl radical which may comprise heteroatoms, R′ is a hydrocarbyl radical, R″ is a hydrocarbyl radical and R′ and/or R″ being a bulky radical, X1, X2 or X3 is the same or different H or OH, whereby at least X1, X2 or X3 is OH, and n is 1 to 4; or a compound according to formula (II): R′″—(S)p—R′″  (II) wherein R′″ is an aliphatic hydrocarbyl radical and p is 1 to 6; or a mixture of any of such compounds, to a stabilized polymer comprising the above stabilizers and to a process for cross-linking and stabilization of silane group containing polymers in the presence of the above mentioned stabilizers.

Dependencies are inferred from the claim text.