Thixotropic polyurethane-forming adhesives for carpeting...

Details Thixotropic polyurethane-forming adhesives for carpeting... Thixotropic polyurethane-forming adhesives for carpeting...

C - Chemistry, Metallurgy

08

L

403/14, 154/49,

C08L 75/04 (2006.01) B32B 5/24 (2006.01) C08G 18/69 (2006.01) C08L 53/00 (2006.01) C09J 175/14 (2006.01) D06M 15/564 (2006.01) D06N 7/00 (2006.01)

Patent

CA 1063278

Abstract of the Disclosure A carpet backing is formed by applying a thixo- tropic polyurethane adhesive composition as either a laminating adhesive, a precoat adhesive or a unitary backing to the underside of the primary fabric of tufted carpet. The thixotropic adhesive composition, comprising a liquid, hydroxyl-terminated diene polymer, a low molecular weight reinforcing polyol, an isocyanate, a filler, and a catalyst, provides substantially complete bundle wrap of each fiber tuft without penetration through the primary fabric backing material to the top side or face of the carpet. The thixotropic polyurethane adhesive composition is applied to the underside of the primary fabric backing material in measured quantity and cured by the application of heat with or without a secondary fabric being applied prior to curing.

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