Patent Number: 6,254,954

Title: Pressure-sensitive adhesive tape

Abstract: The invention relates to a pressure-sensitive adhesive tape with improved room temperature handleability comprising an adhesive layer with at least one exposed surface and optionally a backing, wherein the pressure-sensitive adhesive layer comprises an epoxy/polyester based pressure sensitive adhesive which is crosslinkable upon exposure to actinic or e-beam irradiation and optionally heat, and comprises (i) 30-80% by weight of a polyester component comprising one or more amorphous polyesters compounds, (ii) 20-70% by weight of an epoxy component comprising one or more epoxy resins and/or monomers, (iii) 0-50% by weight of a hydroxyl-functional component containing one or more hydroxyl-containing compounds having a hydroxyl functionality of at least 1, and (iv) an effective amount of a photoinitiator component for crosslinking the pressure-sensitive adhesive, whereby the weight percentages refer to the total mass of components (i)-(iv) and add up to 100 wt. %, and which exhibits a holding power of at least 5 min.

Inventors: Bennett; Greggory S. (Hudson, WI), George; Clayton A. (Afton, MN), Hitschmann; Guido (Neuss, DE), Lamon; Alain H. (Le Pecq, FR)

Assignee: 3M Innovative Properties Company

International Classification: C09J 7/02 (20060101); C09J 7/00 (20060101); C09J 167/00 (20060101); C08L 71/00 (20060101); C08L 63/00 (20060101); B32B 027/04 (); B32B 027/16 (); B32B 027/38 ()

Expiration Date: 07/03/2018