| 摘要 |
<p>A process for coating a polypropylene or polyethylene surface (1) with a maleic acid-grafted polypropylene or polyethylene copolymer. In this process, a dope (2) containing the graft copolymer is applied to the polypropylene or polyethylene surface, e.g., by dip coating, at a temperature high enough to keep the copolymer solvated in the dope solvent. A mixing unit (5) helps maintain the dope at a uniform temperature and water jackets (6) serve to prevent solvent evaporation from the dope (2). The surface is then dried (3) to leave a porous graft polymer coating bonded to the polypropylene or polyethylene. The coated product (4) has superior adhesion characteristics compared to uncoated polypropylene or polyethylene.</p> |
