摘要:
Composition sèche de plâtre/résine/fibres de verre pouvant être projetée avec de l'eau sur la paroi des galeries à l'aide d'une machine à projeter le béton par voie sèche, et ayant un durchissement très rapide.
摘要:
Diese Erfindung betrifft eine Wärmedämmschicht auf Basis organischer, geschlossenzelliger Schaumstoffteilchen, Bindemittel und Verarbeitungshilfsstoffe, die ein Gemisch aus
(a) einer wässerigen Dispersion eines Copolymerisats einer minimalen Filmbildetemperatur von höchstens 10°C, (b) Vorkondensaten von Harnstoff-Formaldehydharzen und/oder Vorkondensaten von MelaminFormaldehydharzen und (c) einem Härter für die Vorkondensate (b) oder Zement als Bindemittel sowie (d) feinteilige quellend wirkende Trocknungsmittel und (e) wasserlösliche Thixotropierungsmittel enthält. Die Wärmedämmschicht ist als Dämmputz besonders für die Wärmedämmung von Gebäuden geeignet und ist auf ihrer Oberseite vorzugsweise mit einem Putz versehen, bei dem das Produkt aus Diffusionswiderstandszahl /u für Wasserdampf und Dicke höchstens gleich groß ist, wie das entsprechende Produkt der Wärmedämmschicht.
摘要:
The present invention relates to a process for producing a polycondensation product by polycondensing monomers including (A) an aromatic or heteroaromatic compound containing a polyether chain, (B) optionally an aromatic or heteroaromatic compound which is different from monomer (A), and (C) an aldehyde, in the presence of a protonation catalyst, wherein the aldehyde is provided by a fast-releasing aldehyde source and a slow-releasing aldehyde source.
摘要:
There is provided a polycondensation product containing a novel phenolic copolymer useful as such a dispersant for hydraulic composition that has stable dispersibility varies depending on of the kind of impurities in an aggregate, and can achieve predetermined flowability. A polycondensation product includes a copolymer obtained by polycondensation of a monomer mixture containing the compounds A to D mentioned the following formulae (A) to (D), and a dispersant for hydraulic composition containing the polycondensation product and the copolymer.
(D) R 2 -CHO, HO(CH 2 O) r H or (CH 2 O) 3
wherein A 1 O, A 2 O, A 3 O and A 4 O are each independently a C 2-4 alkylene oxide group; m and n are each independently a number of 0 to 300, and m+n is 1 or more; p and q are each independently a number of 1 to 300; X is a hydrogen atom, a alkyl group, or a C 2-24 acyl group; R 0 and R 1 are each independently a hydrogen atom, a alkyl group or a alkenyl group; Y 1 and Y 2 are each independently a hydrogen atom, a phosphate group, or a sulfate group; Y 3 is a phosphate group or a sulfate group; R 2 is a hydrogen atom, a carboxyl group, a C 1-10 alkyl group, a C 2-10 alkenyl group, a phenyl group, a naphthyl group, or a heterocyclic group; and r is a number of 1 to 100.
摘要:
The present invention suggests novel inorganic binder formulations and the use of these formulations for the production of acid and heat-resistant construction products.
摘要:
The invention relates to a process for hydrophobization of concrete or mortar using an alkylketene dimer dispersion and to the concrete or mortar obtainable by the process of the invention. The process allows to achieve effective mass and surface hydrophobization of concrete.
摘要:
Method for making light-weight gypsum board with enhanced compressive strength by addition of dispersants. Wallboards made by use of a gypsum-based composition comprising a ketone resin as dispersant and a foaming agent.
摘要:
The invention relates to a process for producing calcium sulphate dihydrate by reacting a water-soluble calcium compound with a water-soluble sulphate compound in the presence of water and a polymer containing acid groups, wherein the polymer containing acid groups comprises specific polyether groups. Additionally disclosed are calcium sulphate dihydrate producible by the process according to the invention, and the use thereof for production of gypsum plasterboard.