Abstract:
The hydraulic cement is based on calcium phosphate for surgical use comprising A) a first component comprising powder particles of calcium phosphate; and B) a second component comprising water. Said calcium phosphate comprises anhydrous, amorphous calcium phosphate (ACP) and said ACP is obtained by milling a calcium phosphate synthesized above 500°C. The cement according to the invention has the advantage of being very fast setting compared to prior art calcium phosphate cements. The setting reaction is finished much faster although the initial part of the reaction proceeds at the same speed as with known cements.
Abstract:
The invention relates to coating compositions comprising A) 5.0 to 50.0 % by weight of epoxy resins that are the reaction products of bisphenol A and/or bisphenol F with epichlorohydrin, B) 5.0 to 55.0 % by weight of an epoxy resin curing agent that can be diluted in water, C) 0.1 to 10.0 % by weight of fibers, D) 0 or 0.1 to 5.0 % by weight of a wax-based open time extender, E) 0 or 0.1 to 5.0 % by weight of rheological additives, F) 5.0 to 70 % by weight of fillers, G) 0 or 0.1 to 20.0 % by weight of water and H) 0 to 70 % by weight of other additives and/or processing agents, the sum of the weight percentages of components A) to H) adding up to 100 % by weight of. The compositions according to the invention are especially suitable for use in equilibration and insulating compounds.
Abstract:
The rheology of aqueous slurries or dispersions of particles employed in such applications as cementitious, paint and water treatment compositions can be more concisely controlled in response to varying conditions of the application by forming an in situ complex of a first polymer X'mY'n, wherein X' is a particle-attaching group, and a second polymer Y''Z', wherein Z' is a particle-dispersing group, the groups Y' and Y'' being mutually non-covalently associative groups, such as hydrophobic moieties.
Abstract:
New additive for projectable agglomerating materials in the building industry, said additive comprising at least one clay of rheologic grade, preferably sepiolite, a water reducer/fluidifier and an aeration agent, as well as the utilization of said additive as component of projectable agglomerating materials such as mortars and concretes.
Abstract:
A process for producing at least two cementitious material fractions from a cementitious feed comprising the steps of: providing a cementitious feed; and separating a fine cementitious material fraction from the cementitious feed using a particle separator; thereby producing at least two cementitious material fractions comprising a fine cementitious material fraction and an oversized cementitious material fraction; and wherein after separating a fine cementitious material fraction from the cementitious feed using a particle separator, the fine cementitious material fraction and the oversized cementitious material fraction have a different chemical composition to the cementitious feed.
Abstract:
This disclosure describes formulations and methods for dust control, for example, coal topping, a term which refers to the application of liquid products to the top of coal loads, such as those in open topped coal hopper railcars as commonly used today to transport coal. Disclosed herein are wax-based emulsion formulations that accomplish dust control during industrial operations in which dust handling is required.
Abstract:
Provided are compositions and methods for expeditious wall installation by spray-applying a joint compound comprising a polymeric binder and hollow spheres. The wet drying-type joint compound for spray application is substantially free of setting minerals, bulk filler, clays, starch, mica, Ca(Mg)C03, expanded perlite, gypsum, talc, diatomaceous earth. It has a shrinkage 250 psi (ASTM D3102-78) and a density of 0.04 - 1.1 g/cm3. The hollow spheres are selected from the group consisting of lime boro-silicate, polystyrene, ceramic, recycled-glass, expanded glass, and lightweight polyolefin beads, thermoplastic, thermoset, and any combination thereof. This joint compounnd is used in a wall installation method comprising joining two gypsum boards together such that the edges create a seam and spraying the seam with the drying type joint compound until the seam is filled.
Abstract translation:提供了通过喷雾施加包含聚合物粘合剂和中空球体的接合化合物来快速壁安装的组合物和方法。 用于喷雾施用的湿式干燥型接头化合物基本上不含矿物,填料,粘土,淀粉,云母,Ca(Mg)C 3 O 3,膨胀珍珠岩,石膏,滑石,硅藻土。 其收缩率<15体积%(ASTM C474-05),粘度调节至15,600-23,000cP(ASTM C474-05)。接头化合物包含3-90重量%的胶乳乳液粘合剂,其选自丙烯酸聚合物 丙烯酸共聚物,醇酸树脂,聚氨酯,聚酯,环氧树脂; 最多5重量%的非离子表面活性剂;至多3重量%的湿润剂; 和5-25重量%的多个中空球体。 这些球体由固体阻挡物结合的独立空气组成,具有> 250psi(ASTM D3102-78)的平均等静压碎强度和0.04-1.1g / cm 3的密度。 中空球选自石灰硼硅酸盐,聚苯乙烯,陶瓷,再循环玻璃,膨胀玻璃和轻质聚烯烃珠,热塑性,热固性及其任何组合。 该连接装置用于墙壁安装方法,其包括将两个石膏板连接在一起,使得边缘产生接缝并且用干燥型接头化合物喷涂接缝直到接缝被填充。
Abstract:
Composition de liant pour mortiers, bétons et enduits légers à agrégats végétaux ou bio-sourcés, plus particulièrement pour béton de chanvre, comprenant un premier composant minéral conventionnel et de la chaux éteinte pulvérulente, ladite composition de liant étant caractérisée en ce qu'elle présente une surface spécifique calculée selon la méthode BET supérieure à 10 m2/g, de préférence supérieure à 12 m2/g, en particulier supérieure à 14 m2/g et en ce que ladite chaux éteinte pulvérulente est présente en une quantité strictement supérieure à 20 % en poids, en particulier égale ou supérieure à 25% en poids, de préférence égale ou supérieure à 30 % en poids, avantageusement égale ou supérieure à 40% en poids et égale ou inférieure à 80 % en poids, en particulier égale ou inférieure à 60 % en poids, par rapport au poids total de ladite composition de liant.
Abstract:
An extrudable cement-based material is formed from a mixture that includes cement in the range of about 40 to 90% by wet weight percent, a lightweight expanded aggregate in the range of about 10 to 60% by wet weight percent, a secondary material in the range of about 0.1 to 50% by wet weight percent, a reinforcement fiber in the range of about 1 to 20% by wet weight percent, a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent, a retarder in the range of about 0.1 to 8% by wet weight percent, and water in the range of 10 to 60% of a total wet material weight.