Aqueous release coating composition.

摘要

The invention is directed to an aqueous release coating comprising a polymer and an aqueous solution or dispersion of an alkylester trimethyl quaternary ammonium salt or tallow trimethyl quaternary ammonium salt. The invention is also directed to use of a layer of the aqueous release coating composition on a layer of pressure sensitive adhesive on a backing layer. The aqueous release coating layer permits the pressure sensitive adhesive layer to be easily separated from the backing layer, even after storage for long durations and under extreme temperature and humidity conditions. The aqueous release coating does not migrate into the pressure sensitive adhesive layer and interfere with the adhesive properties of the pressure sensitive adhesive.