PROCESS FOR THE PRODUCTION OF GENERAL PURPOSE PSA'S

摘要

General purpose inherently tacky acrylic pressure sensitive adhesive polymers formed of alkyl acrylates, vinyl esters, diesters of dicarboxylic acid and saturated carbocyclic acids, having improved properties, a lower residual monomer content and a reduced polymerization time are formed by a sequential polymerization process in which 50 to 95 percent, typically 90 percent, of the monomers are incrementally added to a reactor as a first charge containing substantially all of the vinyl esters, preferably all of the diesters of dicarboxylic acid, the balance of the monomers being fed in a second incremental charge.