Basf Aktiengesellschaft

Guenter Frey

Rolf Fikentscher

Gert Liebold

Knut Oppenlaender

Hans-Juergen Degen

Werner Streit

Wolf Guender

Charalampos Gousetis

Johannes Perner

Friedrich Linhart

Herbert Helfert

Juergen Mohr

Werner Auhorn

Klaus Wulz

Hans Schrimpf

Hans Krebs

Deicing/antiicing fluids for aircraft which contain essentially glycols, crosslinked polyacrylic acid, a nonionic surfactant based on alkoxylated C.sub.10 -C.sub.20 alcohols, corrosion inhibitors, a mixture of NaOH and KOH, an antioxidant and water, reduce the loss of lift by having improved runoff characteristics from the wings while giving a refreeze holdover time of not less than 30 minutes.

Deicing or antiicing fluids for aircraft

A glycol-based antifreeze mixture which is free of nitrites and phosphates contains an alkali metal salt of a C.sub.4 -C.sub.16 -alkenylsuccinic acid, stabilized silicate and further corrosion-inhibiting additives.

Nitrite- and phosphate-free antifreeze based on glycol

Alkoxysilanes containing low levels of chlorine compounds are prepared by stepwise etherification of chlorosilanes with alcohols in liquid phase and removal of the resulting hydrogen chloride by reacting the alkoxysilane obtained, which still contains a small amount of chlorine compound, with a metal alkoxide in an amount which corresponds to a small stoichiometric excess based on the proportion of chlorine compound, and freeing the reaction product from the resulting salt.

Preparation of alkoxysilanes containing a low level of chlorine compounds

Glycol-based coolant mixtures which are free of nitrites and phosphates contain alkali metal salts of bis(carboxyalkyloxyphenyl)-2,2-propane and stabilized silicate and also further corrosion-inhibiting additives.

Nitrite- and phosphate-free glycol-based coolant mixtures

Water-soluble benzylated polyamidoamines which contain from 0.1 to 0.9 mole of benzyl groups per equivalent of nitrogen, and onto which from 20 to 400 parts by weight of ethyleneimine or propyleneimine have been grafted per 100 parts by weight of polyamidoamine, processes for the preparation of the materials, and the use of the materials as cationic assistants in processes for coloring paper with acid dyes and/or direct dyes in an aqueous medium. The papers obtained show a high color strength, with substantially no two sidedness of the coloration.

Water-soluble benzylated polyamidoamines

A process for removing anionic compounds from water which is recycled in manufacturing processes, and from waste water, by adding (1) water-soluble products obtained by reacting an alkylating agent, having an aromatic substituent, with a cationic polyelectrolyte and (2) mineral adsorbents and/or a magnesium salt, aluminum salt or iron salt, with formation and flocculation of water-insoluble reaction products.

Removal of anionic compounds from water

A process for coloring paper with an acid dye and/or direct dye in an aqueous medium in the presence of a water-soluble reaction product of an alkylating agent, possessing an aromatic substituent, with a cationic polyelectrolyte. The process gives papers with high color strength and substantially avoids cylinder twosidedness of the coloration.

Coloring of paper

Certain melamine derivatives are added as anti-foam agents to detergents, cleaners and rinses.

Growing community of inventors

Dannstadt-Schauernheim, Germany

Guenter Frey