Abstract: Relative to administrative processes within business organizations (such as world wide corporations), the present invention provides a method of registering and/or deregistering a product (e.g., a new product, such as a thermoplastic composition or article having a particular color or colors associated therewith).

Abstract: The invention relates to thermally stable, weather-resistant polyamide moulding compositions containing as stabiliser, a mixture of a copper halide, one or more halogen compounds and hypophosphorous acid or an alkali metal or alkaline earth metal salt of this acid, wherein the individual components of the stabiliser mixture are added in an amount such that the molar amount of halogen contained in the moulding composition is greater than or equal to six times the molar amount of and less than or equal to fifteen times the molar amount of copper contained in the moulding composition and the molar amount of phosphorus is greater than or equal to the molar amount of and less than or equal to ten times the molar amount of copper contained in the moulding composition.

Abstract: The invention relates to thermally stable, weather-resistant polyamide moulding compositions containing, as stabiliser, a mixture of a copper halide, one or more halogen compounds and hypophosphorous acid or an alkali metal or alkaline earth metal salt of this acid, wherein the individual components of the stabiliser mixture are added in an amount such that the molar amount of halogen contained in the moulding composition is greater than or equal to six times the molar amount of and less than or equal to fifteen times the molar amount of copper contained in the moulding composition and the molar amount of phosphorus is greater than or equal to the molar amount of and less than or equal to ten times the molar amount of copper contained in the moulding composition.

Abstract: The invention relates to thermally stable and UV-stable polyamide molding compounds containing colloidal copper formed in situ and to a process for their production.

Abstract: The invention relates to transparent multi-layer films made from polyamides and polyolefines using copolyamides of .epsilon.-caprolactam together with diamines and dicarboxylic acids.

Abstract: The invention relates to polyamide molding compounds with increased viscosity, high thermal stability and favorable mechanical properties, to a process for their production and to their use.

Abstract: The invention relates to a process for the production of high molecular weight polyamide 6 (polycaprolactam).

Abstract: The present invention relates to colored polymer moulding materials which give rise to colored markings on a dark background with a very high contrast ratio on the absorption of laser energy.

Abstract: The invention relates to readily processible polyamide molding compounds which have very good mechanical and electrical properties as well as high surface quality and are based on polyamide, magnesium hydroxide and polyhydroxy compounds of the Novolak type.

Abstract: The present invention relates to easily processable polyamide moulding materials with very good mechanical and electrical properties based on calcium magnesium carbonate hydrate as the flame-retardant additive.

Abstract: This invention relates to readily processable polyamide molding compounds combining very good mechanical and electrical properties with high surface quality based on copolyamides and magnesium hydroxide.

Abstract: The invention relates to flameproofed non-drip polyamide molding compounds which contain certain quantities ofa) phosphinic acid esters of polyphenols still containing free phenolic OH groups,b) zinc borate and/or zinc oxide,c) thermoplastics having a predominantly aromatic main chain, optionallyd) antidripping agents (for example polyfluoroethylene polymers) and, optionally,reinforcing materials and/or mineral fillers and other additives for processing, stabilization, etc.

Abstract: The invention relates to a process for the production of caprolactam by thermal depolymerization of polyamide in the presence of small quantities of potassium carbonate at 250.degree. to 320.degree. C. and to a process for purifying the resulting caprolactam.

Abstract: The invention relates to an anhydrous process for the preparation of high molecular weight, optionally branched polyarylene sulphides. These can be prepared in a polar organic solvent in the absence of water by reaction of dihalogenoaromatics with sodium sulphides and bisulphide or potassium sulphides and bisulphide in the presence of catalysts in a polar organic solvent.

Abstract: The invention relates to a process for the production of high molecular weight, optionally branched polyarylene sulfides from alkali sulfides and aromatic dihalogen compounds, in which the reaction is carried out in a polar solvent, such as an N-alkyl lactam, containing from 0.5 to 100 mole %, based on the moles of aromatic dihalogen compound, of a lactam.

Abstract: Thermotropic, fully aromatic polyesters and polyester carbonates are produced by esterification of optionally substituted p-hydroxybenzoic acids and aromatic dicarboxylic acids with diaryl carbonate at temperatures in the range from 100.degree. to 220.degree. C. and subsequent transesterification of the aryl ester obtained with diphenols and, optinally, more diaryl carbonate, accompanied by polycondensation, at temperatures in the range from 250.degree. to 330.degree. C., the esterification, the transesterification and the polycondensation being carried out in the presence of heterocyclic compounds containing 1 to 3 nitrogen atoms.

Abstract: Thermotropic fully aromatic polyester carbonates containing condensed residues of optionally substituted 3-hydroxybenzoic acid have great rigidity, impact strength and elongation at break and yet can be processed under the usual conditions owing to their advantageous fusion viscosity.

Abstract: This invention relates to a process for the preparation of polyarylene sulphides with reduced crystallization temperature.

Abstract: This invention relates to a process for the preparation of high molecular weight polyarylene sulphides from low molecular weight polyarylene sulphides by a reaction with elementary sulphur.

Abstract: This invention relates to a process for the preparation of optionally branched polyarylene sulphides which are distinguished by their substantially lower corrosiveness.