Abstract: The present invention relates to a process for the production of a catalyst for the removal of nitrogen oxides from waste gases, in which the end of the catalyst on the gas-inlet side is coated with a compound selected from the group consisting of biphosphates, condensed phosphates, silicates, borates and mixtures thereof, and is subjected to thermal aftertreatment, where the end of the green element on the gas-inlet side is immersed into an aqueous preparation comprising biphosphates and/or condensed phosphates and/or silicates and/or borates, and the green element is subsequently calcined at temperatures of from 300.degree. to 700.degree. C.

Abstract: A multilayer composite having improved chemical resistance and improved intimate holding between layers is provided comprising(A) a layer of a polyamide-based molding composition having a specified level of amino end groups, and(B) a molding composition comprising a blend of a linear crystalline polyester and a polymer having a specified level of reactive end groups other than epoxide groups.

Abstract: A process for the production of particulate expandable styrene polymers which have a very low benzene concentration is described using perketal and/or monoperoxycarbonate polymerization initiators. The styrene polymers produced according to the invention can be foamed to give foamed particles and molded, if desired.

Abstract: Alkyl glycosides and alkyl oligoglycosides of low iodine color number can be preparedby acid-catalyzed condensation of saccharides in an aqueous solution with short-chain alcohols at elevated temperature in a counter-current reaction column.

Abstract: A process for the preparation of alkyl polyglycosides containing an alkyl group of about 8 to 24 carbon atoms, which comprises glycosylating and transglycosylating one or more saccharides, wherein the glycosylation is carried out in an evaporator at an acid number of about 1 to 10 mg of KOH/g.