Method for imparting improved adhesion to polyolefin substrates

U.S. Patent Number: 5389178

Abstract: Adhesion to polyolefin substrates of (meth)acrylic films or laminates or of coatings, inks, or paints is improved by forming a first film or sheet of a multi-stage polymer containing a crosslinked rubbery first-stage, applying the first film or sheet under heat and pressure to a polyolefin sheet or film, wherein the polyolefin is not rubber-modified, separating the two films or sheets mechanically to leave a thin tie-layer of the multi-stage polymer at or near the surface of the polyolefin sheet or film, and then laminating to the so-treated polyolefin sheet or film a (meth)acrylic sheet or film or applying a latex, paint, or ink.

Inventors: Harvey; Noel G. (North Wales, PA)

Assignee: Rohm and Haas Company (Philadelphia, PA)

Application Number: 08/128,938

Issued: 1995-02-14

Expired: 2007-02-14

Classes: 156/249 ; 156/254; 156/280; 156/306.3; 428/142; 428/543

Field of search: 156/249,254,306.3,280 428/142,543

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