Patent EP-2031001-A1 (EP)
Inventor: HUCK WOLF-RUEDIGER
IPC: C09J5/06
Filed: 2007-08-31
Abstract: Use of a hot-melt adhesive composition comprising at least a polyurethane polymer exhibiting isocyanate groups and/or silane groups, as primer for adhesives or sealing compounds or as primer for compositions for the production of coatings. Independent claims are included for: (1) a method for gluing, comprising either (a1) applying a molten hot-melt adhesive composition containing the polyurethane polymer, on a substrate S1 to be glued; (a2) applying a second adhesive on the hot-melt adhesive composition that is cooled down under its melting point, which is placed on the substrate S1; (a3) contacting the second adhesive with a second substrate S2; or (b1) applying a molten hot-melt adhesive composition containing the polyurethane polymer, on substrate S1 to be glued; (b2) applying a second adhesive on the surface of a second substrate S2; (b3) contacting the second adhesive with the hot-melt adhesive composition that is cooled down under its melting point, which is placed on the substrate S1, within the open time of the second adhesive; or (c1) applying a molten hot-melt adhesive composition containing the polyurethane polymer, on the substrate S1 to be glued; (c2) applying a molten hot-melt adhesive composition containing the polyurethane polymer, on the substrate S2 to be glued; (c3) applying a second adhesive on the hot-melt adhesive composition that is cooled down under its melting point, which is placed on the substrate S1 and optionally on the hot-melt adhesive composition that is cooled down under its melting point, which is placed on the substrate S2; (c4) joining the substrate coated with hot-melt adhesive composition and with a second adhesive coated substrate S1 with the substrate coated with hot-melt adhesive composition and optionally with a second adhesive within the open time of the second adhesive; or (d1) applying a molten hot-melt adhesive composition containing the polyurethane polymer, on at least a substrate S1 and/or S2 to be glued; (d2) cooling the hot-melt adhesive composition under its melting point; (d3) applying a second adhesive between the surfaces of the substrates S1 and S2; where the second substrate S2 consists of the same or a different material like the substrate S1; (2) method of sealing or coating a substrate S1 and/or S2 comprising (e1) applying a molten hot-melt adhesive composition containing at least a polyurethane polymer exhibiting isocyanate groups and/or silane groups, on substrate S1 and/or S2; (e2) applying a composition for sealing and/or coating on the hot-melt adhesive composition that is cooled down under its melting point, which is placed on the substrate S1 and/or S2; (3) a composite layer body consisting of a substrate S1 and/or a substrate S2, a hot-melt adhesive composition containing at least a polyurethane polymer exhibiting isocyanate groups and/or silane groups, and a composition Z, which is a second adhesive, a sealing compound or a composition for the production of coatings, where a layer of hot-melt adhesive composition is bounded on at least a layer of a composition Z; and (4) an article which is glued, sealed or coated by the above method.