Abstract: The invention relates to a connector (10) for securing a rope (12) to a support structure (54), comprising a sleeve (16) which can be interlockingly and/or frictionally or integrally connected to a support structure element (56), and which has an inner casing surface (18) having at least one region (20) with an inner thread (22) and having at least one further region (24) for guiding a rope, as well as comprising a screw-in sleeve (32) which has an outer thread (34) at least in sections for screwing into the sleeve, and which also has an inner casing surface (36) for guiding a rope.

Abstract: 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 dihydroxydiphenylcycloalkanes, and also to mixtures of these polycarbonates with polymers, with fillers, with dyes and with conventional additives.

Abstract: The invention relates to a connector (10) for securing a rope (12) to a support structure (54), comprising a sleeve (16) which can be interlockingly and/or frictionally or integrally connected to a support structure element (56), and which has an inner casing surface (18) having at least one region (20) with an inner thread (22) and having at least one further region (24) for guiding a rope, as well as comprising a screw-in sleeve (32) which has an outer thread (34) at least in sections for screwing into the sleeve, and which also has an inner casing surface (36) for guiding a rope.

Abstract: The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of at least one optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of distillation and recovered.

Abstract: The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of an optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of crystallization and recovered.

Abstract: 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 dihydroxydiphenylcycloalkanes, and also to mixtures of these polycarbonates with polymers, with fillers, with dyes and with conventional additives.

Abstract: 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.

Abstract: The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates.

Abstract: The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of an optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of crystallization and recovered.

Abstract: The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of at least one optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of distillation and recovered.

Abstract: A clamp for connecting ropes comprises a material which can be deformed under pressure with two U-shaped recesses arranged on opposite sides of the single-piece clamp into which the rope strands to be connected can be inserted, wherein the arm-like walls of the U-shaped recesses are pressed together and deformed following insertion of the rope strands, in order to form a ring which surrounds each rope strand, wherein the clamp prior to deformation essentially has the shape of a double cone including two cone stumps, and the U-shaped recesses are arranged respectively in the cone stump. At least one of the arm-like walls comprises at least one elevation facing toward the U-shaped recess, wherein the distance between the elevation and the opposite arm-like wall is slightly smaller than a diameter of the rope strands to be connected, and the at least one elevation extends in a longitudinal direction which runs parallel to both arm walls of the U-shaped recess over the length of the arm wall.

Abstract: The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates.

Abstract: The invention relates to a polycarbonate composition having reduced subsequent yellowing of the mouldings produced therefrom on heat ageing and having good optical properties of the polycarbonate composition on processing.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.