The invention relates to a device that includes a substrate and a thin film of a photo-switchable adhesive layer applied to at least one surface of the substrate. A method of releasably supporting a product that includes adhering a product onto the thin film of the device and exposing the thin film to light sufficient to cause a change in the adhesive strength of the thin film. A method of making the device is also disclosed.

The invention relates to a device that includes a substrate and a thin film of a photo-switchable adhesive layer applied to at least one surface of the substrate. A method of releasably supporting a product that includes adhering a product onto the thin film of the device and exposing the thin film to light sufficient to cause a change in the adhesive strength of the thin film. A method of making the device is also disclosed.

The object of the present invention is to provide a novel adhesive. The characteristics of the present invention is an adhesive comprising an organic polymer having a main chain formed by a water-soluble polymer unit, and a hydrophilic organic group and a self-assembling group bonded to the water-soluble polymer unit; and a curing agent.

The present invention is drawn to an adhesive or binder composition comprising, a cationic polyelectrolyte, an anionic polyelectrolyte, a mineral salt selected from the group consisting of alkaline metal or alkaline earth metal halogenides, a particulate mineral filler, a water-soluble polyphenol comprising at least one polyhydroxylated aromatic ring structure, and water It is also drawn to the use of such a composition as an adhesive, binder, coating or sealant in the construction industry.

The present invention is drawn to an adhesive or binder composition comprising, a cationic polyelectrolyte, an anionic polyelectrolyte, a mineral salt selected from the group consisting of alkaline metal or alkaline earth metal halogenides, a particulate mineral filler, a water-soluble polyphenol comprising at least one polyhydroxylated aromatic ring structure, and water It is also drawn to the use of such a composition as an adhesive, binder, coating or sealant in the construction industry.