| abstract |
ADHESIVES, INKS, PRIMERS, ETC., IN WHICH TACKIFYING RESINS ARE COMBINED WITH CERTAIN POLY ALPHA-OLEFIN BLOCK POLYMERS, HAVE EXCELLENT SPECIFIC ADHESION TO LOW ENERGY SURFACES SUCH AS POLUTHYLENE AND POLYPROPYLENE AS WELL AS TO SUCH OTHER SURFACES AS METAL, WOOD, PLASTICS, GLASS AND RUBBER. THE POLYMER IS A BLOCK ALPHA-OLEFIN WHICH HAS THE GENERAL FORMULA A-(B-A)N WHEREIN A BLOCKS ARE AT LEAST CAPABLE OF CRYSTALLIZATION AND B BLOCKS ARE SUB STANTIALLY AMORPHOUS. |