Abstract: A hot-melt pressure-sensitive adhesive composition comprises: a) at least one polyurethane comprising at least two end functional groups T of following formula (I): —X—(C?O)—CH(RV)?CH2??(I) b) at least one tackifying resin chosen from the following resins: (b1) terpene/phenolic resins; (b2) the resins resulting from the polymerization of ?-methylstyrene, optionally followed by a reaction with at least one phenol; (b3) the polymeric resins (optionally at least partially hydrogenated) resulting from mainly C9 aromatic fractions; and c) at least one polymerization inhibitor. The polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4. The said polyurethane (a) has a mean functionality of functional groups of formula (I) strictly of greater than 1.9.

Abstract: The invention relates to an adhesive dual-component composition based on polyurethane, comprising an —NCO component and an —OH component such that: the —NCO component is a composition comprising: A) at least one polyurethane prepolymer comprising at least two NCO terminal groups obtained by the polyaddition reaction of at least one dissymmetric diisocyanate monomer and at least one diol, and B) at least one triisocyanate selected from isocyanurates, biurets, diisocyanate and triol adducts, and the mixtures thereof; the —OH component is a composition comprising at least one polyol; at least one of the polyols or diols is selected from polyether polyols (or polyether diols); at least one of the polyols or diols is selected from polyester polyols (or polyester diols); and the weight ratio of the quantity of polyether polyol(s) to the quantity of polyester polyol(s), defined as r4, ranges from 0.6 to 2.2.

Abstract: The invention relates to an adhesive composition that can be activated at a low temperature (from 110° C., preferably from 100° C.) and is available in the form of a film, and to the method for the production thereof. The invention also relates to a composition comprising at least one specific polyester polyol and at least one specific polyisocyanate dispersible in said polyester polyol in the presence of at least one specific organic solvent, and to the use of said composition for producing an adhesive composition that can be activated at a low temperature and is available in the form of a film.

Abstract: The invention relates to a composition comprising: an NCO component comprising: A) at least one polyurethane comprising at least two NCO terminal groups produced by an addition polymerisation reaction of at least one dissymetric diisocyanate and at least one polyol, and B) at least one polyisocyanate comprising at least three NCO isocyanate functions, selected from the group consisting of biurets, isocyanurates, adducts of diisocyanates and of triols, and the mixtures thereof; and an OH component comprising: at least one polyol; and a total content of filler(s) higher than or equal to 35 wt. %, in relation to the total weight of said OH component.

Abstract: A hot-melt pressure-sensitive adhesive composition comprises: a) at least one polyurethane comprising at least two end functional groups T of following formula (I): —X—(C?O)—CH(RV)?CH2??(I) b) at least one tackifying resin chosen from the following resins: (b1) terpene/phenolic resins; (b2) the resins resulting from the polymerization of ?-methylstyrene, optionally followed by a reaction with at least one phenol; (b3) the polymeric resins (optionally at least partially hydrogenated) resulting from mainly C9 aromatic fractions; and c) at least one polymerization inhibitor. The polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4. The said polyurethane (a) has a mean functionality of functional groups of formula (I) strictly of greater than 1.9.

Abstract: The invention relates to an adhesive composition that can be activated at a low temperature (from 110° C., preferably from 100° C.) and is available in the form of a film, and to the method for the production thereof. The invention also relates to a composition comprising at least one specific polyester polyol and at least one specific polyisocyanate dispersible in said polyester polyol in the presence of at least one specific organic solvent, and to the use of said composition for producing an adhesive composition that can be activated at a low temperature and is available in the form of a film.

Abstract: The invention relates to an adhesive dual-component composition based on polyurethane, comprising an —NCO component and an —OH component such that: the —NCO component is a composition comprising: A) at least one polyurethane prepolymer comprising at least two NCO terminal groups obtained by the polyaddition reaction of at least one dissymmetric diisocyanate monomer and at least one diol, and B) at least one triisocyanate selected from isocyanurates, biurets, diisocyanate and triol adducts, and the mixtures thereof; the —OH component is a composition comprising at least one polyol; at least one of the polyols or diols is selected from polyether polyols (or polyether diols); at least one of the polyols or diols is selected from polyester polyols (or polyester diols); and the weight ratio of the quantity of polyether polyol(s) to the quantity of polyester polyol(s), defined as r4, ranges from 0.6 to 2.2.