PROCEDE POUR LA PREPARATION DES FEUILLESSUPPORTS ENROBEES EN RESINES POLYESTERIQUES

摘要

This invention relates to a process for making carrier sheets containing hardenable polyester resins by treating the carrier sheets with solutions or emulsions of polyester resins, which comprises A. IMPREGNATING THE CARRIER SHEET WITH AN AQUEOUS SOLUTION OF A HARDENABLE WATER-SOLUBLE POLYESTER RESIN, B. SUBSTANTIALLY DRYING THE CARRIER SHEET CONTAINING THE AQUEOUS SOLUTION OF THE HARDENABLE POLYESTER RESIN, C. APPLYING A POLYMERIZABLE UNSATURATED COMPOUND ONTO THE RESIN-CONTAINING CARRIER SHEET IN A QUANTITY SUFFICIENT FOR SUBSEQUENT CROSS-LINKING, D. COATING THE TREATED RESIN-CONTAINING CARRIER SHEET WITH A SOLUTION OR AN AQUEOUS DISPERSION OF A WATER-INSOLUBLE HARDENABLE POLYESTER RESIN CONTAINING A CROSS-LINKING AGENT, AND E. SUBSTANTIALLY DRYING THE RESULTANT PRODUCT OF THE PROCESS.