摘要:
The invention relates to a condensation product obtainable by reaction of a1) at least one bicyclic or polycyclic aromatic or heteroaromatic, where the bicyclic or polycyclic aromatic or heteroaromatic is substituted by at least one carboxyl group (—COOH), and where the carboxyl group can be present in salt form, a2) at least one carbonyl compound, a3) if appropriate at least one sulfonating agent, a4) at least one urea derivative, and a5) if appropriate at least one further aromatic or heteroaromatic, or a physiologically tolerable salt thereof.
摘要:
The invention relates to a mixture comprising i) at least one condensation product (A) obtainable by reaction of a1) at least one aromatic system or heteroaromatic system, a2) at least one carbonyl compound, a3) if appropriate at least one sulfonating agent and a4) if appropriate at least one urea derivative, where the condensation product (A) has an Mw value ≧9000 g/mol, and ii) at least one tanning agent having an Mw value ≦3000 g/mol.
摘要:
A process for the production of leather using one or more reaction products of(a) triamines or higher amines with (b) at least one compound of the general formula I A1-R1 I where R1 is selected from hydrocarbon radicals having 10 to 5000 carbon atoms, straight-chain or branched, saturated or having from one to three C—C double bonds, and A1 from groups capable of reacting with amines.
摘要:
A process for the production of leather using one or more reaction products of (a) triamines or higher amines with (b) at least one compound of the general formula I A1-R1 I where R1 is selected from hydrocarbon radicals having 10 to 5000 carbon atoms, straight-chain or branched, saturated or having from one to three C—C double bonds, and A1 from groups capable of reacting with amines.
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 N-acyl derivatives of sarcosinic acid as corrosion inhibitor.
摘要:
The present invention relates to the use of oxidic nanoparticles having an average particle size of 2 to 2000 nm in combination with at least one polycationic polymer as corrosion protection for metallic surfaces and also to a method of protecting metallic surfaces from corrosion, comprising the steps of: i) providing a formulation comprising oxidic nanoparticles (a) and at least one polycationic polymer (b) and an application medium, ii) applying the formulation to the metallic surface that is to be protected, and iii) optionally drying and/or heat-treating the surface.
摘要:
The surfaces of apparatuses and apparatus parts for chemical plant construction, including, for example, apparatus, container and reactor walls, discharge apparatuses, fittings, pumps, filters, compressors, centrifuges, columns, heat exchangers, dryers, comminuting machines, internals, packings and mixing elements, are coated by a process wherein protuberances having a mean height of from 100 nm to 50 &mgr;m with a mean spacing of from 100 nm to 100 &mgr;m are produced on the surface to be coated and the coating is applied thereon by currentless deposition of a metal layer or of a metal-polymer dispersion layer with the aid of a plating bath which contains a metal electrolyte, a reducing agent and optionally a polymer or polymer blend to be deposited, in dispersed form.
摘要:
Catalyst systems of the Ziegler-Natta type, which are suitable for the polymerization of olefins are prepared by: A) bringing an inorganic metal oxide on which a magnesium compound has been deposited into contact with a tetravalent titanium compound, B) if desired, bringing the intermediate obtained in this way into contact with an electron donor compound and C) bringing the intermediate obtained in step A) or B) into contact with a polysiloxane.
摘要:
The invention relates to a process for the preparation of polyalkylenepolyamines by catalyzed alcohol amination, in which(i) aliphatic aminoalcohols are reacted with one another or(ii) aliphatic diamines or polyamines are reacted with aliphatic diols or polyols with the elimination of water in the presence of a catalyst.
摘要:
Use of formulations comprising (A) one or more aminocarboxylates, selected from among methylglycine diacetate (MGDA) and its alkali metal salts and glutamic diacetate (GLDA) and its alkali metal salts, (B) at least one inorganic compound selected from among inorganic phosphates, inorganic phosphites, inorganic nitrates, ammonium salts and potassium salts and (C) optionally water for the application to plants, the ground or growth substrates.