Thixotropic wood adhesive gel

Details Thixotropic wood adhesive gel Thixotropic wood adhesive gel

C - Chemistry, Metallurgy

09

J

C09J 131/04 (2006.01) C09J 105/00 (2006.01) C09J 129/02 (2006.01) C09J 197/02 (2006.01) C08L 31/04 (2006.01)

Patent

CA 2108293

A water based thixotropic adhesive gel is disclosed which comprises; an aqueous emulsion of polyvinyl acetate in an amount sufficient to form adhesive bonds on wood; partially hydrolyzed polyvinyl alcohol in an amount sufficient to provide wet tack of the adhesive; glyoxal in an amount sufficient to provide water resistance to the adhesive; and wood flour in an amount sufficient to increase the water resistance imparted by the glyoxal and to provide sanding and staining properties to the adhesive; and xanthan gum in an amount sufficient to provide a thixotropic index and viscosity allowing extrusion of the gel from a flexible dispenser having a dispensing opening of about 0.073 inches in diameter by applying finger-pressure to the dispenser while, upon extrusion, the gel forms a bead which does not run when applied in a horizontal line on wood in a vertical plane.

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