Polyurethane foam-backed pressure-sensitive adhesive tape

Details Polyurethane foam-backed pressure-sensitive adhesive tape Polyurethane foam-backed pressure-sensitive adhesive tape

1976-01-19

1976-11-23

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

260 25AG, 260 25AD, 260 25AL, 428315, 428351, 428425, B32B 326

Patent

active

039938336

ABSTRACT:
Foam-backed pressure-sensitive adhesive tape having an open-cell polyurethane foam backing containing a foam-stabilizing fluoroaliphatic substance such as a fluoroaliphatic oligomer which affords repellency to oil and water. Moieties of the fluoroaliphatic substance similar to moieties of the polyurethane afford solubility in the polyurethane-forming mixture which is balanced against the insolubilizing effect of the carbon-bonded fluorine to concentrate the fluoroaliphatic substance at the cell membrane surfaces of the foam.

REFERENCES:
patent: 3173826 (1965-03-01), Campbell et al.
patent: 3311338 (1967-03-01), Culley
patent: 3524825 (1970-08-01), Rill, Jr.

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