Abstract: A process for making monoalkali metal cyanurates in a powdery form from a cyanuric acid powder by adding thereto a concentrated aqueous solution of an alkali hydroxide such as sodium or potassium hydroxide. The concentrated aqueous alkali hydroxide solution is added sequentially to the cyanuric acid powder as the admixture is vigorously mixed, forming a monoalkali metal cyanurate as a hydrated powder.

Abstract: A method fixes an optical fiber (15) in a connector (10) for an optical plug-in connection. The connector (10) includes a location body (11) having a bore hole (12) to receive the optical fiber (15). In accordance with the method, the optical fiber (15) is inserted into the bore hole (12) of the location body (11) and is fixed therein by bonding with an adhesive (19). Easy and stable bonding is achieved by using a solid chemically reactive adhesive (19) which is reacted when brought into a liquid state and which enables a temperature-resistant connection.

Abstract: An adhesive is to be provided of which one component can be stored virtually with exclusion of air, in anaerobicform, for a prolonged period, and can thus be introduced into the sleeve of an optical connector in a production operation, and the second component of which can be introduced into the first component with the fiber at the assembly site. This is achieved by an adhesive consisting of at least two components, in which the reaction is initiated by interface contact of the two components. For this purpose the two components each comprise unsaturated compounds which are dissolved in mono- and/or polyfunctional acrylates. One component of the adhesive comprises an organometallic compound and the other component an unsaturated dicarboxylic acid and peroxide.

Abstract: The thermo-setting reaction adhesive present as a mono-component system contains as its essential components respectively at least a) one unsaturated scaffold polymer based on a non-cross-linked elastomer in a share of 5 to 90% by weight, b) one unsaturated polyester in a share of 5 to 90% by weight, c) one unsaturated cross-linking agent in a share of 0.1 to 50% by weight, d) one setting catalyst which provides radicals with an activation temperature of 60.degree. to 300.degree. C. in a share of 0.2 to 6% by weight and f) optionally other additives. The adhesive is distinguished by high storage stability and high adhesive strength with a short cross-linking time and it is particularly suitable for bonding thermo-shrinking molded parts.