Prevent discoloration or discoloration reduction method and prevent discoloration or discoloration reducing agent and diorganopolysiloxane composition containing the anti-tarnish or discoloration reducing agent

摘要

A method of inhibiting or reducing discoloration of a diorganopolysiloxane composition comprising the steps of mixing: said composition with the following components in any order: i) a source of ferrous ions; and ii) 0.0001-0.05 wt. % per total weight of the composition of a bis(2-pyridylthio-1-oxide) non-ferrous salt per total weight of the composition.