摘要:
Die Erfindung betrifft durch Kondensationsreaktion härtbare Organopolysiloxanzusaramensetzungen enthaltend (A) mindestens eine Organosiliciumkomponente bestehend aus Einheiten der Formel R a (OH) b (R 1 O) c SiO (4-a-b-c)/2 (I), worin die Reste und Indizes die in Anspruch 1 angegebene Bedeutung haben, mit der Maßgabe, dass in Formel (I) die Summe a+b+c
摘要:
The invention concerns mineral, hydraulic binder in powder form, based on a calcium sulphoaluminate-clinker powder containing as admixture at least one activator component acting as an alkali in an aqueous medium for the hydraulic reaction of the calcium sulphoaluminate of the clinker powder, and at least one zinc component which releases zinc ions in an aqueous medium, and preferably at least one setting retardant for the calcium sulphoaluminate, for example at least one setting-retarding fruit acid and/or at least one setting-retarding polyphosphate. The invention further concerns a hydraulic dry mortar, fresh concrete and hardened concrete containing this binder.
摘要:
Radical polymerization-curing working material compositions having a prolonged working life which contain the following components (a) to (e): (a) a polymerizable unsaturated monomer; (b) a polymer being soluble of dispersible in the above component (a); (c) a radical polymerization initiator; (d) a transition metal soap; and (e) a compound capable of forming a complex or a chelate with the transition metal in the above component (d). These compositions are applicable at from low temperatures (about - 20 DEG C) in winter to high temperatures (about 70 DEG C), in particular, on the road surface in summer, etc.
摘要:
A fire barrier composition in the form of a zinc-containing magnesium oxychloride cement is described. The composition exhibits a prolonged pot-life as well as reduced thermal popping when applied to a substrate as a coating. The fire barrier composition can be used for rendering a flammable substrate fire resistant and for encapsulating lead paint.
摘要:
A novel admixture approach to be used in various concrete formulations as a means of modifying and enhancing performance of the concrete. This invention will provide benefits in a variety of ways, including enhanced control over concrete curing times, increased strength and beneficial changes in concrete formulations, particularly useful for specific applications.
摘要:
A novel admixture approach to be used in various concrete formulations as a means of modifying and enhancing performance of the concrete. This invention will provide benefits in a variety of ways, including enhanced control over concrete curing times, increased strength and beneficial changes in concrete formulations, particularly useful for specific applications.
摘要:
Chromates are produced from chromium traces in the starting components of cements because of oxidation by air at elevated temperatures during the production of cement and later adding water in order to produce cement mortar. Said chromates irritate the skin, cause allergies, and are possibly carcinogenic. The invention relates to a method and a substance for the reductive chromate detoxification of cement preparations by means of manganese(III) salts that are soluble in water at a pH exceeding 7. Also disclosed is the use of manganese(III) salts to reduce Cr(VI) compounds in cement preparations.
摘要:
Emulsions are provided which are useful in imparting water-resistance to gypsum wood fiber products. In one embodiment, the emulsions comprise a wax or a combination of waxes, an alkyl phenol, at least one surfactant, Polynaphthalenesulfonic acid, and an alkali metal hydroxide. In another embodiment, the emulsions comprise a wax or a combination of waxes, an alkyl phenol, at least one surfactant, polynaphthalenesulfonic acid, an alkali metal hydroxide, and a complexed starch.
摘要:
The invention relates to a material for sealing porous construction surfaces against damp. The material exists in the form of plaster. Said plaster consists of a composition made of sand, cement, lime hydrate, water and cellular mortar.
摘要:
The present invention describes a hardening accelerating admixture for hydraulic binders, the accelerator being based on transition metal silicate hydrates having the general formula: aMe x O y bMO cAl 2 O 3 SiO 2 dH 2 O 1) where - Me represents a transition metal whose molar coefficient a is in a range between 0.001 and 2, preferably between 0.01 and 1; - M represents an alkaline earth metal whose molar coefficient b is in a range between 0 and 2, preferably between 0.3 and 1.6; - The molar coefficient c for Al 2 O 3 is in a range between 0 and 2, preferably between 0.1 and 1; - H 2 O represents the hydration water of the silicate hydrate whose molar coefficient d can vary within a wide range between 0.5 and 20; x and y can both be equal to 1 or different, depending on the valence of the transition metal, given that the valence of the oxygen atom in the metal oxide is equal to 2.
摘要翻译:本发明描述了一种用于水硬性粘合剂的硬化加速混合物,该加速剂基于具有以下通式的过渡金属硅酸盐水合物:aMexOy bMO cAl 2 O 3 SiO 2·dH 2 O 1)其中-Me表示摩尔系数a在0.001 和2,优选在0.01和1之间; M表示碱土金属,其摩尔系数b在0和2之间,优选在0.3和1.6之间; - Al 2 O 3的摩尔系数c在0和2之间,优选在0.1和1之间; - H2O表示硅酸盐水合物的水化水,其摩尔系数d可以在0.5至20之间的宽范围内变化; 考虑到金属氧化物中的氧原子的价数等于2,x和y可以等于1或不同,这取决于过渡金属的化合价。