Alan H Paulson

US Patent:

47804912, Oct 25, 1988

Filed:

Feb 9, 1987

Appl. No.:

7/012383

Inventors:

George F. Vesley - Hudson WI
Alan H. Paulson - River Falls WI

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

C08J 932

US Classification:

523219

Abstract:

The invention primarily concerns a pressure-sensitive adhesive tape, the adhesive layer of which is filled with glass microbubbles and has a dark appearance by virtue of (1) the microbubbles are stained glass which preferably is dark, and (2) dispersed throughout the adhesive layer is a pigment or dye which preferably is dark. More broadly, the invention concerns any coherent article filled with stained-glass microbubbles. The glass of the microbubbles preferably has an ultraviolet window, permitting the article to be made by photopolymerizing a matrix filled with the microbubbles.