-
公开(公告)号：US5120689A
公开(公告)日：1992-06-09
申请号：US611646
申请日：1990-11-13
IPC分类号： C01B21/06 , C01B21/068 , C01B21/072 , C01B21/076 , C01B31/30 , C01B31/36 , C01B33/06 , C01B35/04 , C08G79/00
CPC分类号： C08G79/00 , C01B21/06 , C01B21/0685 , C01B21/0726 , C01B31/30 , C01B31/303 , C01B31/305 , C01B31/36 , C01B33/06 , C01B35/04 , C01B21/0617 , C01B21/062 , C01B21/076 , C01P2006/60 , C01P2006/80
摘要： Process for production of a ceramic material, e.g. a carbide, nitride, boride or silicide, by reacting at least one compound of a metallic or non-metallic element having two or more groups reactive with hydroxyl groups with at least one organic compound having two or more hydroxyl groups to form an oxygen-containing polymeric product, heating the polymeric product to produce a coked product containing carbon and an oxide of the metallic or non-metallic element, and heating the coked product to produce a ceramic material, in which the proportion by weight of carbon to the oxide of the metallic or non-metallic element in the coked product is in the range from 50% to 150% of the proportion which is theoretically required to produce the ceramic material.
-
公开(公告)号：US4996174A
公开(公告)日：1991-02-26
申请号：US27270
申请日：1987-03-18
IPC分类号： C01B21/06 , C01B21/068 , C01B21/072 , C01B21/076 , C01B31/30 , C01B31/36 , C01B33/06 , C01B35/04 , C08G79/00
CPC分类号： C08G79/00 , C01B21/06 , C01B21/0685 , C01B21/0726 , C01B31/30 , C01B31/303 , C01B31/305 , C01B31/36 , C01B33/06 , C01B35/04 , C01B21/0617 , C01B21/062 , C01B21/076 , C01P2006/60 , C01P2006/80
摘要： Process for production of a ceramic material, e.g. a carbide, nitride, boride or silicide, by reacting at least one compound of a metallic or non-metallic element having two or more goups reactive with hydroxyl groups with at least one organic compound having two or more hydroxyl groups to form an oxygen-containing polymeric product, heating the polymeric product to produce a coked product containing carbon and an oxide of the metallic or non-metallic element, and heating the coked product to produce a ceramic maerial, in which the proportion by weight of carbon to the oxide of the metallic or non-metallic element in the coked product is in the range from 50% to 150% of the proportion which is theoretically required to produce the ceramic material.
摘要翻译： 制造陶瓷材料的方法，例如 碳化物，氮化物，硼化物或硅化物，通过使至少一种具有两个或多个具有羟基的反应性的金属或非金属元素的化合物与至少一种具有两个或多个羟基的有机化合物反应形成含氧的 聚合产物，加热聚合产物以产生含有金属或非金属元素的碳和氧化物的焦化产物，并加热焦化产物以产生陶瓷颗粒，其中碳与氧化物的重量比例 焦化产物中的金属或非金属元素在制造陶瓷材料理论上所需的比例的50％至150％的范围内。
-
公开(公告)号：US4950626A
公开(公告)日：1990-08-21
申请号：US113159
申请日：1987-10-27
IPC分类号： C01B21/06 , C01B21/064 , C01B21/068 , C01B21/076 , C01B31/30 , C01B31/34 , C01B31/36 , C01B33/04 , C01B33/06 , C01B35/04 , C04B35/571 , C08G79/00 , C08G79/10 , D01F9/08 , D01F9/10
CPC分类号： C08G79/10 , C01B21/06 , C01B31/30 , C01B31/36 , C01B33/06 , C01B35/04 , C01B21/0617 , C01B21/062 , C01B21/0622 , C01B21/0632 , C01B21/064 , C01B21/068 , C01B21/076 , C01P2006/60 , C01P2006/80
摘要： A process for the production of a refractory compound, e.g. a carbide or nitride, of a metallic or non-metallic element, by reacting a mixture of a compound of the metallic or non-metallic element having at least two groups reactive with hydroxyl groups and an organic compound having at least two hydroxyl groups to produce an oxygen-containing polymeric product, and pyrolysing the polymeric product, e.g. in an inert atmosphere to produce a carbide or in an atmosphere of reactive nitrogen compound to produce a nitride, in which the reaction mixture contains an aluminium compound containing at least one group reactive with hydroxyl groups.The presence of the aluminium compound in the reaction mixture leads to an increase in the proportion of carbon in the product initially produced by pyrolysis, and to a higher purity in the refractory compound which is ultimately produced.
摘要翻译： 制备难熔化合物的方法，例如， 金属或非金属元素的碳化物或氮化物，通过使具有至少两个与羟基反应的基团的金属或非金属元素的化合物与具有至少两个羟基的有机化合物的混合物反应以产生 含氧聚合产物，并热解聚合物，例如 在惰性气氛中生成碳化物或在活性氮化合物的气氛中以产生氮化物，其中反应混合物含有至少一个与羟基反应的基团的铝化合物。 反应混合物中铝化合物的存在导致最初通过热解产生的产物中的碳的比例增加，并且在最终生产的难熔化合物中具有更高的纯度。
-
公开(公告)号：US4861735A
公开(公告)日：1989-08-29
申请号：US112890
申请日：1987-10-27
摘要： A process for the production of a refractory boride or silicide which comprises producing an oxygen-containing polymeric product by reacting a compound of the metallic or non-metallic element having two or more groups reactive with hydroxyl groups and a compound of boron or silicon having two or more groups reactive with hydroxyl groups with an organic compound having two or more hydroxyl groups and heating the polymeric product in an inert atmosphere to pyrolyse the polymeric product and produce a refractory boride or silicide of the metallic or non-metallic element.
摘要翻译： 一种用于生产耐火硼化物或硅化物的方法，其包括通过使具有两个或多个与羟基反应的基团的金属或非金属元素的化合物和具有两个或两个以上的羟基的硼或硅化合物反应制备含氧聚合物 或更多个与具有两个或更多个羟基的有机化合物与羟基反应的基团，并在惰性气氛中加热聚合产物以热解聚合产物并产生金属或非金属元素的耐火硼化物或硅化物。
-
公开(公告)号：US5017525A
公开(公告)日：1991-05-21
申请号：US169574
申请日：1988-03-17
申请人： James D. Birchall , Mary J. Mockford , David R. Stanley , Paul M. L. Asher , William R. McCarthy
发明人： James D. Birchall , Mary J. Mockford , David R. Stanley , Paul M. L. Asher , William R. McCarthy
IPC分类号： C01B21/06 , C01B21/064 , C01B21/068 , C01B21/072 , C01B31/30 , C01B31/36 , C01B33/06 , C01B35/04 , C04B35/56 , C04B35/58 , C08G77/60 , C08G79/00
CPC分类号： C04B35/573 , C01B21/06 , C01B21/0726 , C01B31/30 , C01B31/36 , C01B33/06 , C01B35/04 , C04B35/5607 , C04B35/5611 , C04B35/5622 , C04B35/58071 , C04B35/591 , C04B35/65 , C08G77/60 , C08G79/00 , C01B21/0617 , C01B21/062 , C01B21/064 , C01B21/068 , C01B21/072 , C01P2004/51 , C01P2004/61 , C01P2006/60 , C01P2006/80
摘要： A process for the production of a precursor which is a polymeric material comprising at least one metallic or non-metallic element, oxygen and carbon and from which a ceramic material, e.g. a carbide, nitride, boride, or silicide, may be produced by pyrolysis, which process comprises reacting(1) a first reactant which comprises a compound or compounds of at least one metallic or non-metallic element having two or more groups reactive with hydroxyl groups, and(2) a second reactant which comprises at least one organic compound having two or more hydroxyl groups,said reaction being effected in a liquid medium in which the reactants are soluble and/or dispersible and in which the polymeric material which is produced by the reaction is insoluble or in which the polymeric material may be caused to be insoluble, precipitating the polymeric material in the liquid medium in particulate form, and recovering the polymeric material from the liquid medium in particulate form.
-
公开(公告)号：US4353747A
公开(公告)日：1982-10-12
申请号：US160370
申请日：1980-06-17
申请人： James D. Birchall , Kevin Kendall
发明人： James D. Birchall , Kevin Kendall
摘要： A hydraulic cement composition comprising a mixture of at least one particulate hydraulic cement and water in which the weight average mean particle size of the particles of the cement is less than 20 microns and in which the proportion of water is not greater than 30% by weight of the hydraulic cement in the composition, the cement being preferably substantially free of particles having a size above 20 microns and the proportion of water being preferably not greater than 20% by weight.
摘要翻译： 一种水硬性水泥组合物，其包含至少一种水泥水泥和水的混合物，其中所述水泥颗粒的重均粒度平均粒径小于20微米，并且其中水的比例不大于30重量％ 组合物中的水硬性水泥的水泥优选基本上不含大于20微米的颗粒，水的比例优选不大于20重量％。
-
公开(公告)号：US4410366A
公开(公告)日：1983-10-18
申请号：US330585
申请日：1981-12-14
CPC分类号： C04B40/005 , C04B24/2623 , C04B2111/00301
摘要： A cementitious composition comprising hydraulic cement, not more than 25% of water by weight of the composition, and water soluble or dispersible (co)polymer in a proportion of 1 to 15% by weight of the hydraulic cement in the composition, the cement and (co)polymer being selected such that a test composition comprising 100 parts by weight of cement, 5 parts by weight of (co)polymer, and 16 parts by weight of water when extruded in a capillary rheometer undergoes an increase of at least 25% in shear stress when a ten-fold increase in the shear rate of the test composition from the capillary of the rheometer is effected. Also a cementitious product produced by setting of the composition. The (co)polymer is preferably a partially hydrolyzed poly (vinyl acetate). The cementitious product may have a flexural strength in excess of 100 MPa.
摘要翻译： 一种胶结组合物，其包含水硬性水泥，不超过组合物重量的25％的水，以及组合物中水硬性水泥的1至15重量％的水溶性或可分散（共）聚合物，水泥和 （共）聚合物，使得当在毛细管流变仪中挤出时，包含100重量份水泥，5重量份（共）聚合物和16重量份水的测试组合物经历增加至少25重量％ 当来自流变仪的毛细管的试验组合物的剪切速率增加十倍时，在剪切应力下。 也是通过设定组合物生产的水泥制品。 （共）聚合物优选为部分水解的聚（乙酸乙烯酯）。 胶结产物的弯曲强度可以超过100MPa。
-
公开(公告)号：US4265406A
公开(公告)日：1981-05-05
申请号：US44161
申请日：1979-05-31
CPC分类号： C05C1/02 , B02C23/06 , Y10S149/112
摘要： A process is described for the comminution of a solid material in the presence of a saturated solution of the solid in a liquid in which the solid has a solubility greater than 1%, and also in the presence of an additive dissolved in the saturated solution which can at least partially inhibit regrowth at crystal surfaces of the solid material. The process is of particular interest for the comminution of water-soluble salts in the presence of their saturated aqueous solutions and may be employed to make, inter alia, improved slurry explosives and fluid fertilizer compositions.
摘要翻译： 描述了一种在固体在固体溶解度大于1％的液体中的固体的饱和溶液存在下粉碎固体材料的方法，以及溶解在饱和溶液中的添加剂的存在下， 可以至少部分地抑制固体材料的晶体表面的再生长。 该方法在其饱和水溶液存在下粉碎水溶性盐是特别有意义的，并且可用于特别改进的浆料炸药和流体肥料组合物。
-
公开(公告)号：US5236599A
公开(公告)日：1993-08-17
申请号：US892676
申请日：1992-06-04
CPC分类号： C02F1/66 , C02F1/5236 , Y10S210/911
摘要： Acid water containing toxic levels (>0.1 ppm) of aluminum is treated to dissolve therein both silicate ions in an amount to create a solution containing at least 40, preferably at least 100, micromoles per liter of silicon and a silicon:aluminum ratio (based on metals) of at least about 6:1 and preferably 10:1 in the water to form a non-toxic complex with aluminum and alkali or alkali metal ions to increase the pH of the water. The preferred treatment agent is a hydraulic calcium silicate, in the form of cement clinker, optionally silicate-enriched with a soluble silicate.
摘要翻译： 处理含有毒性水平（> 0.1ppm）的铝的酸性水溶解其中的两种硅酸盐离子，其量为产生含有至少40，优选至少100微摩尔/升硅和硅：铝比（基于 在金属中）在水中至少约6:1，优选10:1，以形成与铝和碱金属或碱金属离子的无毒络合物，以增加水的pH。 优选的处理剂是水泥熟料形式的水硬硅酸钙，任选地富含可溶性硅酸盐的硅酸盐。
-
公开(公告)号：US5211871A
公开(公告)日：1993-05-18
申请号：US901974
申请日：1992-06-22
申请人： James D. Birchall
发明人： James D. Birchall
CPC分类号： C02F1/66 , C02F1/688 , Y10T428/2993
摘要： An agent for the treatment of water containing dissolved aluminum comprises a particulate alkali metal or quaternary ammonium silicate, the particles having a coating of a water-insoluble silicate over at least a part of their surface, and a process of treating water which comprises dissolving the agent in the water.
摘要翻译： 用于处理含有溶解铝的水的试剂包括颗粒状碱金属或季铵硅酸盐，所述颗粒在其表面的至少一部分上具有水不溶性硅酸盐的涂层，以及处理水的方法，其包括将 代理在水中。
-
-
-
-
-
-
-
-
-
搜索结果
25 条记录 (耗时 0.021 秒)
