C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
204/109, 204/91.
C08J 7/02 (2006.01) B01J 19/08 (2006.01) C08J 7/18 (2006.01)
Patent
CA 2026999
TREATMENT OF ULTRAHIGH MOLECULAR WEIGHT POLYOLEFIN TO IMPROVE ADHESION TO A RESIN ABSTRACT Method and apparatus for treating ultrahigh molecular weight, high strength polyolefin to improve its adhesive bonding to a resin such as epoxy, vinyl ester, polyester, polyurethane, polyolefin or thermoplastic rubber are provided. The method includes the steps of soaking the polyolefin in a first solution comprising (i) an aromatic ketone photosensitizer, and (ii) a first solvent selected from the group consisting of a benzene derivative, an alkyl halide, and a cyclic alkane; removing any excess first solvent; coating the surface of the polyolefin with a second solution comprising (i) about 15 to 70 weight percent of a monomer independently selected from the aforementioned group, (ii) about 0.25 to 5 weight percent of an aromatic ketone photosensitizer, and (iii) about 25 to 84.75 weight percent of a solvent selected from the group consisting of a low boiling point alcohol and a low boiling point ketone; exposing the coated polyolefin to a sufficient amount of irradiation to surface graft the monomer of the second solution to the polyolefin; washing the treated polyolefin; and drying for suitable packaging. The apparatus features an irradiation treatment chamber through which the polyolefin is passed in a cooled tube for treatment.
Bennett Roger Charles
Nguyen Huy X.
Poursartip Anoshiravan
Riahi Golnar
Wood Geoffrey M.
Allied-Signal Inc.
Bennett Roger Charles
Gowling Lafleur Henderson Llp
Nguyen Huy X.
Poursartip Anoshiravan
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