Patent ID: 6403703
Filing Date: 2002-06-11
Classification: C08F

Abstract:
An aqueous composition suitable for use when dry as an improved elastomeric coating, caulk, sealant or pressure sensitive adhesive comprising a predominantly acrylic aqueous emulsion polymer, said polymer having a glass transition temperature (Tg) from âˆ’90Â° C. to 20Â° C., formed by the free radical polymerization of at least one ethylenically unsaturated nonionic acrylic monomer and 0.5-5%, by weight based on the total weight of said polymer, ethylenically unsaturated carboxylic acid monomer until 90-99.7% of said monomers by weight, based on the total weight of said polymer, has been converted to polymer and subsequently at least half of the remaining monomer is converted to polymer in the presence of 0.1-1.0 wt %, by weight based on the total weight of said polymer, t-amyl hydroperoxide.