Moisture-crosslinkable hot-melt adhesive based on polyurethane prepolymer
AssigneeBostik SA
InventorsMichel Miskovic, François Bauduin, Patrick Bouttefort, Jean-François Chartrel
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Abstract
The invention relates to a moisture-crosslinkable hot-melt adhesive which is composed of a polyurethane prepolymer obtained by polyaddition of at least one polyol to at least one isocyanate chosen from the group of diisocyanates trimerized as isocyanurates and reaction products of diisocyanates with water, the prepolymer having a content of free NCO group of between 1 and 25% by weight. The adhesive according to the invention may be used for the adhesive bonding of fixing components of the Velcro® type to articles intended for hygiene.
Claims16
A method for bonding comprising adhesively bonding fastening elements with a moisture-crosslinkable hot-melt adhesive, said moisture-crosslinkable hot-melt adhesive comprising a polyurethane polyaddition prepolymer of at least one polyol and at least one isocyanate comprising a diisocyanate trimerized as an isocyanurate or a reaction product of a diisocyanate with water, said prepolymer having a content of free NCO groups of between 1 and 25% by weight, wherein the adhesive consists essentially of the polyurethane polyaddition prepolymer and optionally one or more of a filler, tackifying agent, plasticizer, adhesion promoter, or catalyst.
A method for adhesive bonding of a fixing component comprising a textile mesh comprising a multitude of fine loops and a plastic film, comprising applying an adhesive to said fixing component and adhesively bonding said fixing component to an article intended for hygiene, said adhesive comprising a polyurethane polyaddition prepolymer of at least one polyol and at least one isocyanate comprising a diisocyanate trimerized as an isocyanurate or a reaction product of a diisocyanate with water, said prepolymer having a content of free NCO groups of between 1 and 25% by weight, wherein the adhesive consists essentially of the polyurethane polyaddition prepolymer and optionally one or more of a filler, tackifying agent, plasticizer, adhesion promoter, or catalyst.
An article intended for hygiene comprising a fixing component comprising a textile mesh adhesively bonded to said article with an adhesive, said adhesive comprising a polyurethane polyaddition prepolymer of at least one polyol and at least one isocyanate comprising a diisocyanate trimerized as an isocyanurate or a reaction product of a diisocyanate with water, said prepolymer having a content of free NCO groups of between 1 and 25% by weight, wherein the adhesive consists essentially of the polyurethane polyaddition prepolymer and optionally one or more of a filler, tackifying agent, plasticizer, adhesion promoter, or catalyst.
An article intended for hygiene comprising fastening elements, said fastening elements comprising a textile mesh, said textile mesh comprising fine loops and a plastic film bonded with a moisture-crosslinkable hot-melt adhesive comprising a polyurethane polyaddition prepolymer of at least one polyol and at least one isocyanate comprising a diisocyanate trimerized as an isocyanurate or a reaction product of a diisocyanate with water, said prepolymer having a content of free NCO groups of between 1 and 25% by weight, wherein the adhesive consists essentially of the polyurethane polyaddition prepolymer and optionally one or more of a filler, tackifying agent, plasticizer, adhesion promoter, or catalyst.
Dependencies are inferred from the claim text.