Abstract: The application relates to a two-component composition comprising: a composition A comprising: at least one polyurethane P having at least two terminal methacrylate functions, the polyurethane content P being at least 6% by weight relative to the total weight of composition A; at least one reducing agent; and at least one methacrylate monomer; a composition B comprising: at least one oxidizing agent; and optionally at least one methacrylate monomer, said polyurethane P being obtained by a method comprising: E1) a step of preparing an NCO-terminated polyurethane, comprising the polyaddition reaction between: i) at least one polyisocyanate; and ii) at least one polyol; E2) reacting the product formed at the end of step E1) with at least one methacrylate monomer M having at least one hydroxyl function.

Abstract: The present invention concerns a composition comprising: a composition A comprising at least one polyurethane having at least two acrylic end functions T of the following formula (I): CH2?CH—C(?O)—X— (I) where X represents —O— or —NRa— with Ra representing H for an alkyl radical comprising 1 to 22 carbon atoms, preferably 1 to 14 carbon atoms, X preferably representing —O—; and a composition B comprising: at least one polyamine B1 comprising only two —CH2NH2 groups; and at least one polyamine B2 comprising at least two primary amine functions —NH2.

Abstract: The present invention relates to a composition comprising: a composition A comprising: at least one polyurethane P comprising at least two acrylate end functions; and at least one epoxy resin; and a composition B comprising: at least one polyamine B1 comprising at least two functions chosen from primary and secondary amines; at least one polyamine B2, different than the polyamine B1, comprising at least two functions chosen from primary and secondary amines; said composition being characterized in that: it does not comprise any polythiol; and the weight ratio of polyurethane(s) P/epoxy resin(s) in the composition A ranges from 1/49 to 99/1.

Abstract: The invention relates to an adhesive dual-component composition comprising a composition A based on a polyurethane prepolymer with cyclocarbonate terminations and a composition B based on a mixture comprising at least one diamine B1 comprising only two primary amine groups of the —CH2—NH2 type and at least one polyamine B2 comprising at least three primary amine groups of the —CH2—NH2 type. The invention also relates to a multilayer structure produced from the adhesive composition according to the invention and to the method for the production thereof.

Abstract: 1) Specific polyurethane prepolymer (PP2) comprising at least two terminal (2-oxo-1,3-dioxolan-4-yl)methyl carbamate groups of low viscosity, its preparation process and its use in the manufacture of an adhesive composition. 2) Multicomponent system comprising, as first component (A), a composition comprising at least one such polyurethane prepolymer and, as second component (B), a composition comprising at least one curing agent comprising at least two primary amine (—NH2) groups (B1). 3) Process for assembling materials employing the polyurethane prepolymer (PP2) according to the invention.

Abstract: The invention relates to an adhesive dual-component composition comprising a composition A based on a polyurethane prepolymer with cyclocarbonate terminations and a composition B based on a mixture comprising at least one diamine B1 comprising only two primary amine groups of the —CH2—NH2 type and at least one polyamine B2 comprising at least three primary amine groups of the —CH2—NH2 type. The invention also relates to a multilayer structure produced from the adhesive composition according to the invention and to the method for the production thereof.

Abstract: 1) Specific polyurethane prepolymer (PP2) comprising at least two terminal (2-oxo-1,3-dioxolan-4-yl)methyl carbamate groups of low viscosity, its preparation process and its use in the manufacture of an adhesive composition. 2) Multicomponent system comprising, as first component (A), a composition comprising at least one such polyurethane prepolymer and, as second component (B), a composition comprising at least one curing agent having at least two primary amine (—NH2) groups (B1). 3) Process for assembling materials employing the polyurethane prepolymer (PP2) according to the invention.

Abstract: 1) Specific polyurethane prepolymer (PP2) comprising at least two terminal (2-oxo-1,3-dioxolan-4-yl)methyl carbamate groups of low viscosity, its preparation process and its use in the manufacture of an adhesive composition. 2) Multicomponent system comprising, as first component (A), a composition comprising at least one such polyurethane prepolymer and, as second component (B), a composition comprising at least one curing agent having at least two primary amine (—NH2) groups (B1). 3) Process for assembling materials employing the polyurethane prepolymer (PP2) according to the invention.

Abstract: 1) Specific polyurethane prepolymer (PP2) comprising at least two terminal (2-oxo-1,3-dioxolan-4-yl)methyl carbamate groups of low viscosity, its preparation process and its use in the manufacture of an adhesive composition. 2) Multicomponent system comprising, as first component (A), a composition comprising at least one such polyurethane prepolymer and, as second component (B), a composition comprising at least one curing agent comprising at least two primary amine (—NH2) groups (B1). 3) Process for assembling materials employing the polyurethane prepolymer (PP2) according to the invention.