摘要:
The invention relates to aromatic polycarbonates which comprise dioxydiarylcycloalkane structural units, and which have improved optical and thermal properties. It also relates to an improved process to produce the said polycarbonates from dihydroxydiphenylcyloalkanes, and also to mixtures of these polycarbonates with polymers, with fillers, with dyes and with conventional additives.
摘要:
The invention relates to a polycarbonate composition with improved melt-flowability together with good optical properties and together with good hydrolysis resistance.
摘要:
The invention relates to a connecting means (1) for two crossing cable strands (2.1, 2.2) of cable play systems having a cloverleaf-shaped inner cable guide opening (5) in which, in a wraparound region (6), cable strands deflected by a wraparound angle (7) are fixed, wherein a height (3) of the connecting means is equal to or greater than a cable diameter (4) of the cable strands to be connected.
摘要:
Known climbing frames having a support frame, in which a rope net is rigged, are not very attractive as individual playing devices, as no considerable 3-dimensional net volume is provided and on the other hand as the device cannot be combined by modular elements to larger units.According to the present embodiment, the support frame consists of at least one pentagonal frame element, wherein a separate rope net is rigged within each frame element. The frame elements can thus be assembled in a modular manner to form complex 3-dimensional structures.
摘要:
A rope crossing secures rope lines on each other as well as rope play equipment which has at least one rope crossing. The rope crossing includes at least two crossing rope lines and a ring, wherein the ring has an inner opening with twice the number of essentially radially extending receiving regions in relation to the number of rope lines to be secured. A corresponding line segment of a rope line forming a bulge is received in two corresponding receiving regions that face one another, so that the bulges of crossing rope lines are arranged on respective opposite sides of the ring. The ratio of the unobstructed width LW of a receiving region to the diameter of the rope line D, which forms the bulge in this receiving region, is LW/D=0.8 to 0.98.
摘要翻译:绳索穿过彼此固定绳索线以及至少有一根绳索穿过的绳索游乐设备。 绳索横梁包括至少两个交叉绳索和环,其中环具有相对于要固定的绳索数量的基本上径向延伸的接收区域的数量的两倍的内部开口。 形成凸起的绳线的相应线段被接收在彼此相对的两个对应的接收区域中,使得交叉绳索的凸起布置在环的相应相对侧上。 接收区域的无阻碍宽度LW与在该接收区域中形成凸起的绳索线D的直径的比率为LW / D = 0.8〜0.98。
摘要:
The present invention relates to an aromatic branched polycarbonate, produced via melt transesterification of a bisphenol with a diaryl carbonate in the presence of a branching agent, wherein the aromatic branched polycarbonate comprises branching point structures and structures of formula (D) wherein X is a single bond, C1- to C6-alkylene, C2- to C5-alkylidene or C5- to C6-cycloalkylidene, optionally substituted by C1- to C6-alkyl; wherein the amount of D in the aromatic branched polycarbonate is in the range of from 5 to 450 mg per kg of the aromatic branched polycarbonate; and wherein the ratio of the total branching point structures to the total structures of the formula D in the aromatic branched polycarbonate is in the range of from 8 to 200.
摘要:
In a device and a process for continuous solid/liquid separation (filtration) of solid-liquid suspensions on moving filters, for example on rotating drum filters or belt filters, the active filtering layer contains a woven fabric material composed of synthetic fibres, which has an enhanced filtrate permeability and also an enhanced thermal stability with improved dimensional stability, and also improved mechanical strength compared with polypropylene fibres.
摘要:
The present invention is directed to a composition comprising a tris-hydroxyaryl compound having a metal ion impurity content of less than 10 ppm and to a process for the purification of tris-hydroxyaryl compound having a metal ion impurity, comprising at least the following steps: a) conditioning a sulphonic acid group-containing active ion exchanger with a solvent which is suitable for the handling of the tris-hydroxyaryl compounds, b) producing a solution of the tris-hydroxyaryl compounds to be purified in a solvent which is suitable for the handling of the tris-hydroxyaryl compounds, c) contacting the tris-hydroxyaryl compound-containing solution from b) with the conditioned ion exchanger from a), d) separating the tris-hydroxyaryl compound-containing solution from c) from the conditioned ion exchanger, e) removing at least part of the solvent from the solution of the tris-hydroxyaryl compound separated in d) under low temperature stress.