Abstract: A hardener system for a synthetic resin composition having free-radical-polymerisable compounds, which includes the following constituents: a) at least one activator in the form of a metal salt, and as free-radical starter b1) (i) at least one aldehyde and/or ketone and at least one primary amine, and/or b2) (ii) at least one aldimine or (iii) at least one ketimine, or a mixture of two or more of constituents (i) to (iii). In addition, synthetic resin compositions having such a hardener system for application especially in fixing technology, and subject matters related thereto.

Abstract: A hardener system for a synthetic resin composition having free-radical-polymerisable compounds, which includes the following constituents: a) at least one activator in the form of a metal salt, and as free-radical starter b1) (i) at least one aldehyde and/or ketone and at least one primary amine, and/or b2) (ii) at least one aldimine or (iii) at least one ketimine, or a mixture of two or more of constituents (i) to (iii). In addition, synthetic resin compositions having such a hardener system for application especially in fixing technology, and subject matters related thereto.

Abstract: Rapidly functional chemical fixing systems for anchoring elements, which fixing systems comprise a radically curing olefinic reactive resin formulation, a hardener and optionally additives, wherein the reactive resin formulation is composed of one or more curing olefinic reactive resins, one or more aminic accelerators, one or more non-phenolic (anaerobic) inhibitors and no or one or more phenolic inhibitors, and as the hardener there is provided a hardener with at least one peroxide as the initiator, wherein as the aminic accelerator(s) the reactive resin formulation comprises at least one highly active aminic accelerator in an amount of at least 1.

Abstract: The invention relates to a composite anchor, which consists of an anchor rod (1) anchorable by means of a compound mass in a hole (12) drilled in a building component (13), the anchor rod comprising several cone-like segments (3a, 3b, 3c) widening towards the insertion end (4) and spaced from one another by cylindrical portions (6a, 6b). The length of the cylindrical portions (6a, 6b) is 0.5 times to 2.0 times the length of the cone-like segment (3a, 3b) adjoining the respective portion in the direction of the insertion end (4). This produces a stable mortar shell (14) after the compound mass has hardened, which causes high withdrawal values as a consequence of the cone-like segments (3a, 3b, 3c) settling into the hardened mortar shell (14) following widening of the drilled hole as a result of cracks forming. The composite anchor is therefore especially suitable for anchoring in zones subject to tensile forces.

Abstract: An expansible anchor for anchoring in a hole drilled in a component has a shank having a rear end provided with a structure for fixing an article and a front end provided with at least two portions of reduced cross-section with adjoining expander cones, expansible sleeve with a structure including an expansible sleeve positioned over each of the portions of reduced cross-section, at least two convex beads mounted on the expansible sleeve with a structure and projecting radially outwards, each of the beads being provided with at least one opening, and the two portions of reduced cross-section having different diameters.

Abstract: An expansion anchor for insertion into a cylindrical hole of a mounting substrate possesses two expansion cones with coordinated expansion rings. The expansion rings are provided with radially protruding beads extending from the rear rim up into the center area of the expansion rings. Starting at the front rim in an insertion direction, axial incisions are provided in addition to a traversing slot, which define an expansion area of the expansion rings.

Abstract: A tie rod with a fastening section presenting several spreading cones is provided with a cage which divides the hardenable mortar composition used for the fastening in a cylindrical bore hole into segments. On the occurrence of a crack through the fastening ground of the bore hole, a respreading of the mortar shell formed by the hardenable mortar composition is made possible by a tensile force on the tie rod.

Abstract: An undercutting drill for obtaining a drill hole with a conical undercut. A drill shaft is provided connected in an articulated manner through a housing and containing a universal joint to a clamping shank. The face of the housing facing the joint. The drill shaft is provided with a plate having a stopping face, the vertical centerline of which is tilted in relation to the longitudinal axis of the drill shaft.