Abstract: A process prepares a prepolymer containing a urethane group and a curable silicon-functional group, or a prepolymer of formula (IV), The prepolymer may be cured to a cross-linked polymer by ambient moisture and is therefore suitable for use as a component in a one-component sealant or adhesive composition.

Abstract: A process prepares a prepolymer containing a urethane group and a curable silicon-functional group, or a prepolymer of formula (IV), The prepolymer may be cured to a cross-linked polymer by ambient moisture and is therefore suitable for use as a component in a one-component sealant or adhesive composition.

Abstract: Described herein is a two-component polyurethane adhesive that exhibits a glass transition temperature (Tg) of ?70° C. and an open time in the range of ?45 to ?90 minutes at a temperature of ?70° C. and a relative humidity of 50%. Also described is a method of producing the two-component polyurethane adhesive having a long open time with good humidity tolerance which is suitable for bonding large and bulky components or surfaces, including but not limited to, rotor blades of wind turbines.

Abstract: The present invention relates to an epoxy-resin composition as matrix component for sheet molding compounds (SMC) and/or bulk molding compounds (BMC), comprising a resin component comprising at least one epoxy resin and a hardener component comprising at least one imidazole compound and at least one latent hardener. In said epoxy-resin composition, the amount of the imidazole compounds used is in the range from 0.007 to 0.025 mol per mole of epoxy groups of the entire composition, and the total amount of primary amine groups optionally comprised does not exceed a proportion of 0.09 mol per mole of epoxy groups of the entire composition. The invention also relates to a fiber-matrix-semifinished-product composition (SMC composition or BMC composition) with, as matrix component, the epoxy-resin composition mentioned, and with, suspended therein, short reinforcement fibers with an average length of from 0.3 to 5.0 cm.

Abstract: The present invention relates to the use of substantially linear polypropyleneimine as a hardener for epoxy resins, and also to a corresponding curable composition, to the curing thereof, and to the cured epoxy resin obtainable therefrom.

Abstract: The present invention relates to an epoxy-resin composition as matrix component for sheet molding compounds (SMC) and/or bulk molding compounds (BMC), comprising a resin component comprising at least one epoxy resin and a hardener component comprising at least one imidazole compound and at least one latent hardener. In said epoxy-resin composition, the amount of the imidazole compounds used is in the range from 0.007 to 0.025 mol per mole of epoxy groups of the entire composition, and the total amount of primary amine groups optionally comprised does not exceed a proportion of 0.09 mol per mole of epoxy groups of the entire composition. The invention also relates to a fiber-matrix-semifinished-product composition (SMC composition or BMC composition) with, as matrix component, the epoxy-resin composition mentioned, and with, suspended therein, short reinforcement fibers with an average length of from 0.3 to 5.0 cm.

Abstract: The present invention relates to the use of substantially linear polypropyleneimine as a hardener for epoxy resins, and also to a corresponding curable composition, to the curing thereof, and to the cured epoxy resin obtainable therefrom.

Abstract: The present invention relates to an amine composition comprising linear triethylenetetramine and one or more amine compounds selected from the group consisting of tertiary amines derived from the condensation of ethylenediamine and methyl-substituted compounds derived from linear triethylenetetramine as well as a method of production for said composition. The present invention also relates to the use of linear triethylenetetramine or an amine composition according to the invention as amine curing agents. The present invention also relates to amine curing agent compositions comprising linear triethyienetetramine as well as to curable compositions comprising linear triethylenetetramine and to a method for producing said curable compositions. Additionally, the present invention relates to a cured epoxy resin comprising linear triethylenetetramine, especially a reinforced composite, and a method for producing said cured epoxy resins.

Abstract: The present invention relates to a curable composition which comprises epoxy resin, epoxy-group-bearing reactive diluent and the hardener 2,2?,6,6?-tetramethyl-4,4?-methylenebis(cyclohexylamine), curing thereof, and the cured epoxy resin obtainable therefrom, and the use of 2,2?,6,6?-tetramethyl-4,4?-methylenebis(cyclohexylamine) as a hardener for epoxy resins in curable compositions with epoxy-group-bearing reactive diluent.

Abstract: The present invention relates to the use of cyclic carbonates of the formula I or a mixture thereof in epoxy resin compositions and also to epoxy resin compositions which comprise such cyclic carbonates. in which R1 and R2 independently of each other are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R1 and R2 together are a C3-C11-alkylene group; R3 and R4 independently of each other are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R3 and R4 together are a C4-C6-alkylene group; or mixtures thereof, as additives in epoxy resin compositions.

Abstract: The invention relates to a curable composition comprising one or more epoxy compounds, one or more amino hardeners, and an addition of one or more dendritic polymers selected from the group of the dendritic polyester polymers, where the dendritic polyester polymers can be produced through an Ax+By synthesis route.

Abstract: The present invention relates to the speeded curing of a composition comprising an epoxy compound, an amino or anhydride hardener and a high-branched polyether amine accelerant. The high-branched polyether amine may have terminal hydroxyl groups (polyol) and/or amino groups (amino modified). The amino-modified high-branched polyether amines are obtainable by subsequently modifying the terminal hydroxyl groups of high-branched polyether amine polyols.

Abstract: The invention relates to curable compositions which comprise epoxy resins, amino hardeners, and a phosphonate of the formula I. Addition of phosphonate of the formula I can give cured epoxy resins which have not only improved flame retardants but also an increased glass transition temperature when comparison is made with the corresponding resins without said addition.

Abstract: The present invention relates to the use of cyclic carbonates of the formula I or a mixture thereof in epoxy resin compositions and also to epoxy resin compositions which comprise such cyclic carbonates. in which R1 and R2 independently of each other are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R1 and R2 together are a C3-C11-alkylene group; R3 and R4 independently of each other are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R3 and R4 together are a C4-C6-alkylene group; or mixtures thereof, as additives in epoxy resin compositions.

Abstract: The present invention relates to an amine composition comprising linear triethylene-tetramine and one or more amine compounds selected from the group consisting of tertiary amines derived from the condensation of ethylenediamine and methyl-substituted compounds derived from linear triethylenetetramine as well as a method of production for said composition. The present invention also relates to the use of linear triethylenetetramine or an amine composition according to the invention as amine curing agents. The present invention also relates to amine curing agent compositions comprising linear triethylenetetramine as well as to curable compositions comprising linear triethylenetetramine and to a method for producing said curable compositions. Additionally, the present invention relates to a cured epoxy resin comprising linear triethylenetetramine, especially a reinforced composite, and a method for producing said cured epoxy resins.

Abstract: A curable mixture comprising at least one cyanate resin, at least one epoxide compound with more than one epoxy group per molecule, and a metal formula selected from the group consisting of MLxBy, M[SR]xBy, M[SR]x(N)y, M(PHal)m and M(PHal)m(N)n wherein M is a cation of a complexing metal, SR is an organic or inorganic acid residue, L is a chelating ligand, B is a Lewis base, PHal is an ion of a pseudohalide, N is a nitrogen base, x is an integer from 1 to 8, y is an integer from 1 to 5, z is an integer from 7 to 8, m is an integer from 2 to 3 and n is an integer from 1 to 2.