Siloxane tackifying resin layers as adhesion promotion agents
Assignee3M Innovative Properties Company
InventorsAudrey A. Sherman, Claire Hartmann-Thompson, Daniel J. Rogers
Life of this patent
Estimating the term…
Abstract
Layers of siloxane tackifying resins that do not contain siloxane fluids, gums or polymers act as adhesion promotion agents. Articles include a substrate layer, a non-tacky siloxane tackifying resin adhesion promotion layer disposed on the surface of the substrate layer, and a crosslinked siloxane layer in contact with the adhesion promotion layer. The crosslinked siloxane layer is not an adhesive layer. The adhesion of the crosslinked siloxane layer to the substrate is greater than the adhesion without the non-tacky siloxane tackifying adhesion promotion layer.
Claims21
An article comprising:
- a substrate layer with a first major surface and a second major surface;
- a non-tacky siloxane tackifying resin adhesion promotion layer disposed on at least a portion of the second major surface of the substrate layer, wherein the non-tacky siloxane tackifying resin adhesion promotion layer is free of siloxane gums, siloxane fluids, and siloxane polymers;
- and
- a crosslinked siloxane layer with a first major surface and a second major surface, wherein the first major surface of the crosslinked siloxane layer is in contact with the siloxane tackifying resin adhesion promotion layer, wherein the crosslinked siloxane layer is not an adhesive layer and wherein the adhesion of the crosslinked siloxane layer to the substrate is greater than the adhesion of the crosslinked siloxane layer to the substrate without the non-tacky siloxane tackifying adhesion promotion layer.
An article comprising:
- a substrate layer with a first major surface and a second major surface;
- a non-tacky siloxane tackifying resin adhesion promotion layer disposed on at least a portion of the second major surface of the substrate layer, wherein the non-tacky siloxane tackifying resin adhesion promotion layer is free of siloxane gums, siloxane fluids, and siloxane polymers;
- such that contact of the siloxane tackifying resin adhesion promotion layer with a first major surface of a crosslinked siloxane layer, wherein the crosslinked siloxane layer is not an adhesive layer, the adhesion of the crosslinked siloxane layer to the substrate is greater than the adhesion of the crosslinked siloxane layer to the substrate without the non-tacky siloxane tackifying adhesion promotion layer.
A method of preparing an article, comprising:
- providing a substrate layer with a first major surface and a second major surface;
- providing a siloxane tackifying resin composition, wherein the siloxane tackifying resin composition is free of siloxane gums, siloxane fluids, and siloxane polymers;
- providing a crosslinked siloxane layer, wherein the crosslinked siloxane layer is not an adhesive layer;
- disposing the siloxane tackifying resin of at least a portion of the second major surface of the substrate layer to form a non-tacky siloxane tackifying resin adhesion promotion layer;
- and
- contacting the crosslinked siloxane layer to the non-tacky siloxane tackifying resin adhesion promotion layer, to form a multi-layer article wherein the adhesion of the crosslinked siloxane layer to the substrate is greater than the adhesion of the crosslinked siloxane layer to the substrate without the non-tacky siloxane tackifying adhesion promotion layer.
Dependencies are inferred from the claim text.