摘要:
An electrode for an electrochemical metal removing process, with the electrode consisting of a metal sheet extending at right angles to a sinking direction of the electrode. To enable the production of end face contours the metal sheet is provided with perforations which extend laterally beyond an edge of the workpiece being processed. A resiliently mounted plate of an insulating material may be provided for covering a rear side of the perforations.
摘要:
A device for counterbalancing a swivelable body part on a motor vehicle, especially a trunk lid on an automobile, said device including a hinge for the swivelable body part and a torsion bar, the torsion bar being bent to form a crank in the vicinity of a movable hinge part. An intermediate lever is articulated on the movable hinge part and engages the crank, the crank including a crank pin between two legs, the legs being connected by arcuate segments both with the crank pin and with the torsion bar. The legs are made S-shaped so as to minimize waste, provide ease of manufacture and small installation space requirements for the crank.
摘要:
Photopolymerizable compositions for the production of printing plates and relief plates, consisting essentially of a photoinitiator-containing mixture of olefinically unsaturated photopolymerizable compounds with polymeric binders, contain up to 1% by weight of a compound having the structural element of anthrone, e.g. bianthrone and 9,9'-bianthryl, which results in an improved relief image in the production of relief plates.
摘要:
After a key pair with a public key and a corresponding private key has been determined on the basis of an initial value, the initial value is made available to a user. The private key can then be erased. When the user wishes to carry out a cryptographic operation based on the “Public-Key-Technology”, the user enters the initial value into a computer and, upon utilization of the initial value, a regenerated private key is formed, which corresponds to the private key that had been previously formed but was then erased.
摘要:
A profile strip of insulating material is proposed for holding many electrical cables (27)-(30) in switching and control boards and panels, which consists of a mounting section (13) for fastening on a mounting track and a comb-like cable holding section (15) formed thereon. This cable holding section (15) consists of many parallel teeth (14), between which insertion slits (26) for insertion or installation of electrical cables are formed. The insertion slits (26) are limited at the sides by elastic tabs (21) formed on the teeth (14). Between every two teeth (14) a shorter intermediate tooth (20) is positioned such that it divides a portion of the insertion slit (26) into two narrower partial slits. This permits the elastic tabs (21) to hold, in variable fashion, not only cables of smaller diameter (29) in the portion with the intermediate tooth, but also cables of larger diameter (27), (28) in the remaining portion.
摘要:
A process for producing a polymer/metal or polymer/semiconductor composite having an adhesive layer between the polymer and the metal or between the polymer and the semiconductor in which a layer of at least two different chemical elements is applied to the metal or semiconductor by vapor-deposition or cathode sputtering, then selectively or partially removing at least one chemical element of this layer in an etching process, and then applying the polymer.
摘要:
Polymeric reaction products are obtained by reactingI) prepolymers obtained fromA) polyoxyalkylenes which have an average molecular weight M.sub.n of from 140 to 10,000 and contain on average from 1.5 to 3.0a.sub.1) primary or secondary amino groups ora.sub.2) epoxy groups per molecule andB) polymers which are based on conjugated dienes, have an average molecular weight M.sub.n of from 250 to 50,000 and contain on average from 1.5 to 3.0b.sub.1) primary or secondary amino groups orb.sub.2) epoxy groups per molecule, the components (a.sub.1) and ( b.sub.2) or (a.sub.2) and (b.sub.1) being reacted with one another so that from at least an amino equivalent excess to 3 amino equivalents of component (a.sub.1) or (b.sub.1) are present per epoxide equivalent of component (a.sub.2) or (b.sub.2), withII) at least one compound which forms free radicals.
摘要:
The invention relates to a radiation-sensitive mixture essentially consisting of(a) a water-insoluble binder or binder mixture which is soluble in aqueous alkaline solutions,(b) a compound which upon irradiation forms a strong acid and(c) one or more organic compounds which inhibit the solubility of (a) in aqueous alkaline solutions,wherein the organic compound (c) is a .beta.-ketoacide ester.This radiation-sensitive mixture may be used to prepare photoresists.
摘要:
Novel photopolymerizable recording materials, in particular for the production of printing plates and relief plates, can be developed with water or an aqueous alkaline solution and predominantly consist of a photoinitiator-containing mixture of (a) one or more low molecular weight compounds having one or more photopolymerizable olefinically unsaturated double bonds and (b) one or more organic polymeric binders and contain a bisacylphosphine oxide as the photoinitiator.These recording materials are useful for the production of printing plates and relief plates.
摘要:
Narrow-band electrical pulses which are delayed with respect to a first direct pulse produced are generated by a method in which space charges are pulsed in an electric field in a dielectric.