Abstract: The present invention relates to a reactive polyurethane hot melt adhesive and the use thereof. In particular, the present invention relates to a reactive polyurethane hot melt adhesive providing higher initial tack, better elasticity, better recovery and lower malodor.

Abstract: The invention relates to a polyurethane (PU) reactive hot melt adhesive removable at elevated temperature as well as having a high bonding strength at room temperature.

Abstract: The present invention relates to a UV-curable hot-melt adhesive for laminating transparent films, in particular, on molded bodies made of wood materials that are coated with melamine or PVC. The hot-melt adhesives contain: at least one UV-curable urethane (meth)acrylate, wherein the urethane (meth)acrylate can be obtained by converting an NCO-functional polyurethane prepolymer with a molar excess of hydroxy and/or amine-modified (meth)acrylates; at least one (meth)acrylate monomer or oligomer, wherein the at least one (meth)acrylate monomer and/or oligomer comprises an acid-modified (meth)acrylate with an acid value of 50 to 400 mg KOH/g; and at least one photoinitiator. Other aspects of the present invention are methods for laminating a film onto a molded body using said hot-melt adhesives, and to the composite materials produced in this manner.

Abstract: The invention relates to a two-component bonding agent system, consisting of a component A and a component B, comprising A) at least one polymer that possesses at least one Michael acceptor group, and in addition at least one Michael donor group, B) a compound catalyzing the Michael reaction, as well as optional additional additives and/or auxiliaries, wherein the polymer of component A has a number average molecular weight (Mn) between 1000 g/mol and 1 000 000 g/mol. Furthermore, 2K-adhesives, casting compounds and coating agents made from such bonding agent systems are described.

Abstract: A two-component bonding agent system, comprising (a) a polymer with at least two Michael acceptor groups with an average molecular weight of from 1,000 g/mol to 1,000,000 g/mol, (b) a polymer or oligomer with at least two primary or secondary amino groups or blocked amino groups, and (c) optionally, additive, auxiliary and/or catalyst, is described. The adhesive made from the two-component bonding agent systems is useful for composite films, particularly suited for packaging foodstuffs and luxury foods and medicinal products.

Abstract: An adhesive composition having barrier characteristics contains a) a compound having at least one NCO group and at least one reactive functional group that can be cured by irradiation and b) a nanoscale filler. Such compositions are useful as radiation curable one-component or two-component adhesives, particularly in the production of composite films with barrier characteristics. Composite films prepared in this manner can be utilized to package foods and medicaments.

Abstract: An adhesive composition and the use thereof to produce barrier-effect composite films. The adhesive composition contains polymer binders and fillers having a platelet-like crystallite structure with an aspect ratio of >100. The composite films produced with this adhesive exhibit barrier characteristics against the migration of oxygen, flavors and water vapor. These films are useful for packaging foods and medicaments.

Abstract: Polyurethane prepolymers containing NCO (isocyanate) groups and having a low content of monomeric polyisocyanate, processes for their production and uses employing these prepolymers. The polyurethane prepolymers of the invention are produced from by a reaction employing monomeric polyisocyanates and polyols.

Abstract: Polyurethane prepolymers containing NCO (isocyanate) groups and having a low content of monomeric polyisocyanate, processes for their production and uses employing these prepolymers. The polyurethane prepolymers of the invention are produced from by a reaction employing monomeric polyisocyanates and polyols.

Abstract: A reaction adhesive is provided. The reaction adhesive contains a reactive resin, an encapsulated curing agent for the resin and crystalline monoparticles with ferromagnetic, ferrimagnetic, superparamagnetic, prezoelectric or ferroelectric properties. The reaction adhesive is applied to the substrates and the substrates joined. The adhesive is subjected to an alternating electrical, magnetric or electromagnetic field to release the curing agent.