摘要:
2- and 3-Nitrobenzaldehydes suitable for use as intermediates for the preparation of pharmaceuticals are obtained in a simple manner and without risk of uncontrolled decompositions by distilling mixtures of nitrobenzaldehyde isomers at bottom temperatures of at most 200.degree. C. in the presence of monomeric and/or polymeric aromatic amines and/or phenols and/or N- and S-containing phenothiazines.
摘要:
A method of producing shaped articles made from single-sidedly or double-sidedly galvanized steel sheet, starting from galvanized steel strip, at least one of the steps of the method being a transport operation, and in which, for protection from black-spot corrosion, a corrosion preventive oil is applied which comprises at least one phosphoric acid polyoxyalkylene ester.
摘要:
The present invention provides a process for inhibiting the emission of hydrogen sulfide and/or mercaptans from sulfurized organic compounds, which generally contain a high proportion of sulfur by treating the sulfurized organic compounds with organic hydroperoxides.
摘要:
A method for passivating a metallic surface, by treating the surface with a basic aqueous composition comprising one polymer comprising acidic groups, a cationic crosslinker and a volatile basic compound, allows a durable passivation of fragile metal surfaces.
摘要:
A method for passivating metallic surfaces, wherein the surface is contacted with an aqueous composition comprising at least one water-soluble polymer (X) comprising acidic groups and with at least one surfactant (T) based on alkoxylated alcohols, the pH of the composition being in the range from 0.5 to 5, enables durable protection of the surface.
摘要:
An aqueous alkaline etching and cleaning composition for treating the surface of silicon substrates, the said composition comprising: (A) a quaternary ammonium hydroxide; and (B) a component selected from the group consisting of water-soluble acids and their water-soluble salts of the general formulas (I) to (V): (R1—S03-)nXn+ (I), R—P032−(Xn+)3-n (II); (RO—S03-)nXn+ (III), RO—P032−(Xn+)3-n, (IV), and [(RO)2P02-]nXn+ (V); wherein the n=1 or 2; X is hydrogen or alkaline or alkaline-earth metal; the variable R1 is an olefinically unsaturated aliphatic or cycloaliphatic moiety and R is R1 or an alkylaryl moiety; the use of the composition for treating silicon substrates, a method for treating the surface of silicon substrates, and methods for manufacturing devices generating electricity upon the exposure to electromagnetic radiation.
摘要:
The invention relates to the use of microgels for modifying the temperature behavior of non-crosslinkable organic media, in particular in high temperature applications at least about 100° C., for example in engine oils, gear oils, etc.
摘要:
The present invention relates to a process for the preparation of (poly)urea powders, novel (poly)urea powders, compositions comprising them and the use thereof as thickening agents, in particular in lubricants, such as so-called polyurea greases.
摘要:
An aqueous alkaline etching and cleaning composition for treating the surface of silicon substrates, the said composition comprising: (A) a quaternary ammonium hydroxide; and (B) a component selected from the group consisting of water-soluble acids and their water-soluble salts of the general formulas (I) to (V): (R1—S03-)nXn+ (I), R—P032−(Xn+)3-n (II); (RO—S03-)nXn+ (III), RO—P032−(Xn+)3-n, (IV), and [(RO)2P02−]nXn+ (V); wherein the n=1 or 2; X is hydrogen or alkaline or alkaline-earth metal; the variable R1 is an olefinically unsaturated aliphatic or cycloaliphatic moiety and R is R1 or an alkylaryl moiety; the use of the composition for treating silicon substrates, a method for treating the surface of silicon substrates, and methods for manufacturing devices generating electricity upon the exposure to electromagnetic radiation.
摘要:
The invention relates to a composition comprising at least one microgel and at least one functional additive, to processes for the preparation thereof, to uses of the compositions, and to microgel-containing polymers, rubbers, lubricants, coatings, etc. prepared therefrom.