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 method for consolidating roadways, wherein at least one plastic is applied to the surface and/or in the interior of the roadway.
摘要:
A process for the preparation of 1,2-butylene oxide by the catalytic hydrogenation of vinyl oxirane, in which use is made of a palladium catalyst on a support of barium sulfate, zirconium oxide or titanium dioxide or a rhenium-containing supported palladium catalyst.
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 porous material comprising a substrate based on at least one organic polymer A and a coating, where vii) the uncoated substrate based on the organic polymer A is macroporous, viii) the surface of the macroporous substrate is coated with a polymer B based on reactive resins, and ix) this coating with a polymer B is nanoporous and the mean diameter of the nanopores is not more than 1000 nm, and recording materials being excepted. The invention also relates to a process for producing the porous material and to the use of the porous material as a filter for gases or liquids.Finally, the invention relates to filters comprising the porous material, and to a process for filtering gases or liquids.
摘要:
The invention relates to a condensation product obtainable by reaction of a1) at least one aromatic or heteroaromatic, where the aromatic or heteroaromatic is substituted by at least one hydroxyl group (—OH) and at least one carboxyl group (—COOH), and where the hydroxyl and/or carboxyl group can be present in salt form, a2) at least one carbonyl compound, a3) optionally at least one sulfonating agent a4) optionally at least one urea derivative, and a5) optionally at least one further aromatic or heteroaromatic, or a physiologically tolerable salt thereof, with the precondition that the component a1) is not salicylic acid or sulfosalicylic acid if the component a4) is melamine.
摘要:
The invention relates to a method for stabilizing and securing banks, hillsides and slopes, and structures present at least partly in moving waters, such as supporting and construction elements, by composite materials comprising mineral particles, preferably stones, in particular crushed rock, and an epoxy resin.
摘要:
Heat-curable aqueous compositions which comprise a carboxyl-containing polymer component and optionally a hydroxyalkylated amine are used as binders for shaped articles.
摘要:
Mesoporous silica has a specific surface area of the mesopores of at least 500 m.sup.2 /g and a volume of the mesopores of at least 1.0 ml/g and is prepared by converting a silica precursor in a water-containing reaction medium, the reaction medium containing a polymer dispersion.
摘要:
The invention provides a method of treating mineral surfaces, comprising the steps ofa) treating the mineral surfaces to remove soiling and b) coating the surfaces with a plastic, which comprises using as the plastic in step b) a transparent, compact-hydrophobic polyurethane preparable by reacting i) polyisocyanates with ii) compounds having at least two hydrogen atoms that are reactive with isocyanate groups.