Abstract: The present invention relates to a process for the preparation of an ester comprising an after-treatment of the ester to give an ester in granule form of defined particle size distribution, a device for carrying out this process, a process for the preparation of a thermoplastic composition comprising the ester prepared according to the invention, a process for the production of a shaped article comprising the ester according to the invention or the thermoplastic composition according to the invention, a process for the production of a packed product, a process for the production of an at least partly coated object, and uses of the esters according to the invention as an additive in various compositions.

Abstract: The present invention relates to a process for the preparation of an ester in a reactor, wherein at least a portion of the process components is led in a delivery stream outside the reactor over a heat transfer surface as a film, the ratio of the delivery stream to the heat transfer surface being in a range of from 0.25 to 3 m/h, a device, a process for the preparation of a thermoplastic composition comprising the ester prepared according to the invention, a process for the production of a shaped article comprising the ester according to the invention or the thermoplastic composition according to the invention, a process for the production of a packed product, a process for the production of an at least partly coated object, and uses of the esters according to the invention as an additive in various compositions.

Abstract: The present invention relates to a process for the preparation of an ester in a reactor, a device, a process for the preparation of a thermoplastic composition comprising the ester prepared according to the invention, a process for the production of a shaped article comprising the ester according to the invention or the thermoplastic composition according to the invention, a process for the production of a packed product, a process for the production of an at least partly coated object, and uses of the esters according to the invention as an additive in various compositions.

Abstract: The present invention relates to a process for the preparation of an ester from a polyol which is solid at 25° C. and a carboxylic acid component which contains at least 50 wt. % of at least one mono- or polyunsaturated aliphatic carboxylic acid, based on the total weight of the carboxylic acid component, in a reactor under reduced pressure. The invention also provides a device, a process for the preparation of a thermoplastic composition comprising the ester prepared according to the invention, a process for the production of a shaped article comprising the ester according to the invention or the thermoplastic composition according to the invention, a process for the production of a packed product, a process for the production of an at least partly coated object, and uses of the esters according to the invention as an additive in various compositions.

Abstract: An optical fiber (1) has an outer coating (4) enclosing the cladding (3) and the fiber core (2). The coating has one or more plastic layers and a color coding in the form of an annular marking on or in the outermost plastic layer. The annular marking is open colored rings.

Abstract: An apparatus is proposed for controlling the coating thickness of an optical fiber (2) passing sequentially, in that order, from a unit (1) for fabricating the fiber (2) through a cooling unit (3), a coating unit (4) and along a device (5) which determines the diameter of the fiber. The apparatus includes a control element (14) for controlling a control device (15, 16) as a function of the measured diameter in such a way that the thickness of the coating corresponds to a target value, wherein the control device (15, 16) is placed before the coating unit (4) when viewed in the transport direction of the fiber (2), and the control device (15,16) adjusts the temperature of the fiber (2). Also described is a method for controlling the coating thickness.

Abstract: A device for applying a coating material to an optical fiber (1) has a coating nozzle (7) arranged in a nozzle holder (3) and a coating chamber (17) located before the coating nozzle (7) in the direction of travel of the optical fiber (1). Beyond that the device has at least one inlet channel (19) which is connected to the coating chamber (17), as well as a number of feed lines (23) for different coating materials. A connection can be established between one of the feed lines (23) and the at least one inlet channel (19), so that a change of coating material can be made in a simple manner, particularly a color change, without costly conversion and cleaning operations.