摘要:
The present invention relates to a hose system, in particular for vehicle tires, having a hose (12) formed into a ring, comprising polyurethane and having an at least substantially constant wall thickness along the extent thereof, wherein the substantially constant value of the wall thickness is in the range between 0.1 mm and 0.4 mm.
摘要:
Disclosed is an electrical contactor, comprising main contacts and secondary contacts, an armature provided for actuating the main contact bridges and secondary contact bridges, and means for restoring the armature from an intermediate position or end position to an initial position, wherein a precharging coil and a pick-up coil are provided in order to electromagnetically drive the armature. A coil yoke is arranged in such a way that the magnetic force acting on the armature due to the magnetic field produced by the precharging coil is greater in the end position of the armature than in the intermediate position when equal current is provided to the precharging coil, wherein said magnetic force corresponds to the restoring force of the means for restoring the armature to the initial position in the intermediate position of the armature and is greater than the restoring force in the end position of the armature.
摘要:
Weather resistant and water repellent surfacing compositions especially useful in roofing applications contain an alkoxysilane-terminated polymer and a reactive silane plasticizer containing a C6-40 hydrocarbon group. The surfacing compositions are of low viscosity and may be used without non-reactive plasticizers or organic solvents.
摘要:
The invention relates to compounds (K) comprising A) 100 parts by weight of a pre-polymer (P) comprising units (E) in the backbone thereof that are selected from polyether and polyester units, wherein the pre-polymer (P) comprises at least one end group of the general formula (1) -L1-(CH2)y—SiR23-x(OR1)x (1), B) 1 to 100 parts by weight of silane (S) of the general formula (2) R4SiR23-Z(OR1)z (2), (G) 0 to 10 parts by weight of a curing catalyst (HK) that accelerates the curing of the compounds (K) in the presence of humidity, wherein L1 represents a divalent linking group selected from —O—, —S—, —(R3)N—, —O—CO—N(R3)—, —N(R3)—CO—O—, —N(R3)—CO—NH—, —NH—CO—N(R3)—, —N(R3)—CO—N(R3) and R1, R2, R3, x, y and z have the meanings cited in claim 1. R4 are hydrocarbon radicals having at least 7 hydrogen atoms. According to the invention, after hardening, the compounds (K) have high shear strength and are used as adhesives (K).
摘要:
The present invention relates to a device for mounting a switch or the like on a mounting plate. The switch comprises a housing with a housing top side supported on the back side of the mounting plate, a fastening protrusion including fastening means, as well as a plurality of resilient tongues, each having a locking protrusion. The fastening protrusion and the resilient tongues are inserted for mounting purposes from behind into an opening of the mounting plate, with the locking protrusions locking in place with the front edge of the opening. Furthermore, the device comprises a fastening element that can be mounted from the front side of the mounting plate and cooperates with the fastening means of the fastening protrusion. According to the invention the resilient tongues extend from the housing top side substantially in vertical direction and are spaced apart from the fastening protrusion. Moreover, according to the invention the fastening element is formed by a sleeve that can be inserted from the front side of the mounting plate into the opening of the mounting plate.
摘要:
The invention relates to a blend (M), comprising A) 100 parts of an alkoxysilylmethyl-terminated polymer (A) with at least one end group of the general formula (1) -L-(CH2)—SiR23-x(OR1) x (1), with L being a double-bond linking group selected from —O—, —S—, —(R3)N—, —O—CO—N(R3)—, —N(R3)—CO—O—, —N(R3)—CO—NH—, —NH—CO—N(R3)—, —N(R3)—CO—N(R3), R1 and R2 are independently hydrocarbon radicals with 1-6 carbon atoms or ω-lkyl-alkyl radicals with a total of 2-20 carbon atoms, R3 is hydrogen, an optionally halogen-substituted cyclic, linear or branched C1 to C18-alkyl or alkenyl radical or a C6- to C18-aryl radical, and x is 2 or 3, B) 0.01 to 10 parts of a curing catalyst (K) that accelerates the curing of the blend (M) in the presence of air humidity, C) 0 to 1000 parts of one or more fillers (F), D) 0 to 50 parts of one or more monomeric silanes (S) as water traps and silane cross-linkers, E) 0 to 200 parts of one or more plasticizers (W) and F) 0 to 50 parts of one or more adhesion promoters (H) and F) optionally other additives, wherein the blend (M) comprises less than 2 parts of one or more compounds with a primary amine function and less than 0.2 parts of one or more catalyst that contains tin.
摘要:
Alkyl silanes are prepared by silylating an unsaturated hydrocarbon with an Si—H functional silane employing an iridium chloride coordination compound as a catalyst and a polymeric polyene as a cocatalyst. Reaction bottoms can be worked up to provide an iridium-containing composition which remains catalytically active.
摘要:
Methods for dosing a fluid into a receiving channel of a test element using a dosing device are disclosed. The dosing device comprises a dosing chamber in fluid connection with a dosing tube having a dosing tip, an optional dosing element extending at least partially into the dosing chamber, a dosing control device, and a movement device for moving the dosing tube and the test element closer to one another. The movement device is actuated to move the dosing tube relative to the test element. The dosing control device is actuated to discharge a fluid into the receiving channel. During the discharge, a fluid bridge forms between the dosing tip and the receiving channel. At the end of the discharge, at least some of the fluid reaches the receiving channel through suction force. A disposable cartridge may be used for dosing a fluid into such a receiving channel.
摘要:
Isocyanate-free foamable mixtures suitable for filling construction voids and for other uses, comprise isocyanate-free, alkoxysilane-terminated prepolymers (A) which have a silane end group of the formula [1], where X and Y are each an oxygen atom, an N—R3 group or a sulfur atom, R1 is an alkyl, cycloalkyl, alkenyl or aryl radical having 1-10 carbon atoms, R2 is an alkyl radical having 1-2 carbon atoms or an ω-oxyalkylalkyl radical having a total of 2-10 carbon atoms, R3 is a hydrogen atom, an alkyl, alkenyl or aryl radical having 1-10 carbon atoms or a —CH2—SiR1z(OR2)3-z group, and z is 0 or 1, with the proviso that at least one of the two groups X and Y is an NH function, and (B) blowing agents.