Pressure sensitive adhesive compositions

Claim 1

A PRESSURE SENSITIVE ADHESIVE COMPOSITION COMPRISING AN ORGANIC SOLVENT SOLUTION OF A MIXTURE OF: (A) A NONCROSSLINKING POLYMER SELECTED FROM THE GROUP CONSISTING OF COPOLYMERS OF VINYL ACETATE WITH A COMONOMER SELECTED FROM THE GROUP CONSISTING OF THE ALKYL ESTERS OF ACRYLIC AND METHACRYLIC ACID WHEREIN SAID ALKYL GROUPS CONTAIN FROM 2 TO 8 CARBON ATOMS; COPOLYMERS OF VINYLIDENE CHLORIDE WITH A COMONOMER SELECTED FROM THE GROUP CONSISTING OF THE ALKYL ESTERS OF ACRYLIC AND METHACRYLIC ACID WHEREIN SAID ALKYL GROUPS CONTAIN FROM 4 TO 8 CARBON ATOMS; AND, HOMOPOLYMERS OF MONOMERS SELECTED FROM THE GROUP CONSISTING OF ALKYL ESTERS OF ACRYLIC AND METHACRYLIC ACID WHEREIN SAID ALKYL GROUPS CONTAIN FROM 2 TO 8 CARBON ATOMS AND WHEREIN SAID HOMOPOLYMERS HAVE A GLASS TRANSISTION TEMPERATURE OF LESS THAN -- 20*C., AND, (B) AND CROSSLINKABLE COPOLYMER CAPABLE OF BECOMING CROSSLINKED WHEN HEATED AT TEMPERATURES IN THE RANGE OF 150* TO 275*F., SAID CROSSLINKABLE COPOLYMER COMPRISING A COPOLYMER OF AT LEAST ONE OF THE MONOMERS USED IN PREPARING THE NON-CROSSLINKING POLYMER OF GROUP (A) AND AT LEAST ONE CROSSLINKABLE COMONOMER SELECTED FROM THE GROUP CONSISTING OF N-METHYLOL ACRYLAMIDE, NMETHYLOL METHACRYLAMIDE, GLYCIDYL ACRYLATE, GLYCIDYL METHACRYLATE, HYDROXYETHYL ACRYLATE, HYDROXYETHYL METHACRYLATE, HYDROXYLPROPYL ACRYLATE AND HYROXYPROPYL METHACRYLATE.