| abstract |
Functionalized olefin polymers with high grafting degrees and improved adhesion based on predominantly C 2 to C 4 olefin units are obtained by mixing 100 parts by weight of particulate isotactic polybutene-1 having weight-average molar masses M w of 100,000 to 3,000,000 g / mol or ethylene / (Meth) acrylic acid (ester) copolymer having a (meth) acrylic acid (ester) proportion between 5 and 50% by mass by addition of 0.5 to 15 parts by mass of at least one functional monomer selected from the group of α, β-olefinically unsaturated mono - And dicarboxylic acids or their anhydrides (carboxyl monomers), hydroxy, amino, epoxy, silane and other hydrophilic groups possessing monomer and 0.01 to 10 parts by weight of a free-radical initiator while maintaining a dry-fluid phase at reaction temperatures between 40 and 120 ° C to a degree of functionalization between 0.1 and 5 mass% is graft-modified. The functionalized olefin polymers may preferably be used as couplers in polyolefin / fiber or (nano) filler composites or adhesion promoters or (hot melt) adhesives for various substrates, in particular on / between metallic surfaces, as well as a directly adhering layer or adhesion promoter (layer) different multilayer composites are used. |