标题翻译:COPOLYMERE AUF BASIC VONUNGESÄTTIGTENMONO - ODERDICARBONSÄURE-DERIVATEN UND OXYALKYLENGLYKOL-ALKENYLETHERN,VERFAHREN ZU DEREN HERSTELLUNG UND IHRE VERWENDUNG
摘要:
Copolymers based on unsaturated monocarboxylic or dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers and, if appropriate, vinylic polyalkylene glycol or ester compounds and also their use as additives for aqueous suspensions based on mineral or bituminous binders, in particular cement, plaster of Paris, lime, anhydrite or other binders based on calcium sulphate, and also those based on pulverulent dispersion binders are described. The copolymers of the invention give the aqueous binder suspensions a very good dispersing or fluidizing action combined with excellent processing properties. In addition, the oxyalkylene glycol alkenyl ethers used according to the invention can be produced industrially relatively simply and cheaply and require comparatively low initiator concentrations in the copolymerization.
摘要:
The invention relates to a continuous method for producing polyurethanes/polyureas by applying the components of a starting reaction composition individually and/or as a mixture onto an inner region of a hot surface of a rotating body A in the form of a thin film so that the thin film flows across the hot surface of the rotating body A towards an outer region of the hot surface of the rotating body A, the thin film leaving the hot surface as a reaction composition containing polyurethanes/polyurea and the reaction composition being suddenly cooled after leaving the hot surface. The components of the starting reaction composition are a polyisocyanate component and a polyol/polyamine component, the temperature of the hot surface is 70 to 400°C and the sudden cooling of the reaction composition is at least 30°C.
摘要:
A method of preventing the spot formation which occurs on the surface of paving stones when joining paving stones by means of reactive resin mortars, wherein a) a protective layer (A) comprising A 1 ) from 5 to 99.5% by weight of a water-soluble and/or water-dispersible polymer, A 2 ) from 0.5 to 35% by weight of an evaporation accelerator selected from the group consisting of alcohols, glycol ethers, ketones and any mixtures thereof, A 3 ) if appropriate, water as balance is applied to the paving stones before joining, b) after drying of the protective layer, the reactive resin mortar is introduced and c) after curing of the reactive resin mortar, the protective layer (A) is cleaned off together with the adhering reactive resin residues by means of water, is described. The method of the invention makes rapid joining of paving stones by means of reactive resin mortars and reliable prevention of spot formation on the surface of these paving stones possible.
摘要:
The present invention relates to providing anti-caking agent and additive for granulated blast furnace slag or mechanically stabilized product thereof. The anti-caking agent of the present invention contains component A: gluconic acid and/or a salt thereof, and component B: copolymer and/or a salt thereof of C5-6 chained olefin and one or more monomers selected from maleic anhydride, maleic acid or their esterified product, (meth)acrylic acid or its esterified product. The additive of the present invention contains component (I): an anti-caking agent for granulated blast furnace slag, and component (II): an anti-foaming agent selected from one or more kinds based on block and/or random copolymer of polyethylene oxide and propylene oxide, silicone, mineral oil, alcohol, fatty acid ester, and polyether.
摘要:
Vorgeschlagen wird ein Papiersack für pulverförmiges Füllgut, der an der Außenseite des zu seiner Öffnung vorgesehenen Endes mindestens ein auf einer Trägerfläche angebrachtes Gegenstück a) eines Klettverschlusses in flächiger Anordnung aufweist, wobei das Gegenstück a) zur reversiblen und kraftschlüssigen Aufnahme des ihm entsprechenden Gegenstückes b) des Klettverschlusses geeignet ist. Durch diese Ausstattung kann der Papiersack mit variablem Inhalt bis 25 kg Füllmenge auf einfache Art und Weise transportiert, umgesetzt, aber auch entleert werden, ohne dass er vorab mit einer konstruktiv aufwändigen und teuren Halte- und Tragvorrichtung ausgestattet werden muss.
摘要:
A process for the preparation of products of high early strength comprising hydraulic binders, in which a hydraulic binder, water and 0.1 to 5% by weight, based on the hydraulic binder, of a finely divided titanium dioxide are mixed with agitation and in any desired sequence.
摘要:
Pulverulent polycondensation products are described, comprising a) from 5 to 95% by weight of a polycondensation product based on an aromatic or heteroaromatic compound (A) having from 5 to 10 carbon atoms or heteroatoms having at least one oxyethylene or oxypropylene radical and an aldehyde (C) selected from the group of formaldehyde, glyoxylic acid and benzaldehyde or mixtures thereof, and b) from 5 to 95% by weight of a finely divided mineral support material having a specific surface area of from 0.5 to 500 m2/g (according to BET to DIN 66 131). The inventive pulverulent polycondensation products are outstandingly suitable in building material mixtures in an amount of from 0.1 to 5% by weight, based on the weight of the building material. The pulverulent polycondensation products have a number of advantages in this context, for example excellent storage stability, good liquefying action at low dosage and technically simple production.
摘要:
Disclosed are silane-modified urea derivatives which can be produced by reacting diisocyanates with aminosilanes, hydroxylsilanes, or mercaptosilanes. The inventive silane-modified urea derivatives are suitable especially for use as auxiliary rheological agents, preferably as thixotropic agents for silane-crosslinking systems, particularly for single-component and two-component adhesives and sealants, paints, lacquers, and coatings while causing substantially no increase in viscosity, not being subject to discoloring, being reactive, and positively influencing mechanics.
摘要:
A humidity-hardening binding agent comprising a) a silane-modified polyurethane and b) a silane-modified acrylate polymer, wherein the binding agent can harden in the presence of humidity.