会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 21. 发明申请
    • METHODS OF PREPARING POLYMER-ORGANOCLAY COMPOSITES AND ARTICLES DERIVED THEREFROM
    • 制备聚合物 - 组织复合材料的方法及其衍生物
    • US20080004391A1
    • 2008-01-03
    • US11766456
    • 2007-06-21
    • Kwok ChanSarah GenoveseErik HagbergDavid HallJohn MaxamTara MullenRoy OdleAlbert StellaJames White
    • Kwok ChanSarah GenoveseErik HagbergDavid HallJohn MaxamTara MullenRoy OdleAlbert StellaJames White
    • C08K9/04
    • C08F2/44
    • A method for preparing a polymer-organoclay composite composition comprises combining a solvent and an unexfoliated organoclay to provide a first mixture, wherein the unexfoliated organoclay comprises alternating inorganic silicate layers and organic layers, and has an initial spacing between the silicate layers; exposing the first mixture to an energized condition of a sufficient intensity and duration to increase the initial spacing of the inorganic silicate layers, to provide a second mixture; contacting the second mixture with a polymer composition so that the polymer composition fills at least one region located between at least one pair of silicate layers, wherein the polymer composition is at least partially soluble in the solvent; and removing at least a portion of the solvent from the second mixture, wherein the inorganic silicate layers remain separated by the polymer after removal of the solvent.
    • 一种制备聚合物 - 有机粘土复合材料组合物的方法,包括将溶剂和未剥离的有机粘土组合以提供第一混合物,其中未剥离的有机粘土包含交替的无机硅酸盐层和有机层,并且在硅酸盐层之间具有初始间隔; 将第一混合物暴露于足够强度和持续时间的通电状态以增加无机硅酸盐层的初始间隔,以提供第二混合物; 使所述第二混合物与聚合物组合物接触,使得所述聚合物组合物填充位于至少一对硅酸盐层之间的至少一个区域,其中所述聚合物组合物至少部分地可溶于所述溶剂中; 以及从所述第二混合物中除去至少一部分所述溶剂,其中在去除所述溶剂之后,所述无机硅酸盐层保持被所述聚合物分离。
    • 23. 发明申请
    • Hydroxymethylfurfural Reduction Methods and Methods of Producing Furandimethanol
    • 羟甲基糠醛还原方法和生产呋喃二甲醇的方法
    • US20070287845A1
    • 2007-12-13
    • US11760634
    • 2007-06-08
    • Michael LilgaRichard HallenTodd WerpyJames WhiteJohnathan HolladayJohn FryeAlan Zacher
    • Michael LilgaRichard HallenTodd WerpyJames WhiteJohnathan HolladayJohn FryeAlan Zacher
    • C07D307/02
    • C07D307/42C07D307/46
    • A method of reducing hydroxymethylfurfural (HMF) where a starting material containing HMF in a solvent comprising water is provided. H2 is provided into the reactor and the starting material is contacted with a catalyst containing at least one metal selected from Ni, Co, Cu, Pd, Pt, Ru, Ir, Re and Rh, at a temperature of less than or equal to 250° C. A method of hydrogenating HMF includes providing an aqueous solution containing HMF and fructose. H2 and a hydrogenation catalyst are provided. The HMF is selectively hydrogenated relative to the fructose at a temperature at or above 30° C. A method of producing tetrahydrofuran dimethanol (THFDM) includes providing a continuous flow reactor having first and second catalysts and providing a feed comprising HMF into the reactor. The feed is contacted with the first catalyst to produce furan dimethanol (FDM) which is contacted with the second catalyst to produce THFDM.
    • 提供一种还原羟甲基糠醛(HMF)的方法,其中含有HMF的原料在包含水的溶剂中。 H 2被提供到反应器中,起始材料与含有至少一种选自Ni,Co,Cu,Pd,Pt,Ru,Ir,Re和Rh的金属的催化剂接触, 温度小于或等于250℃。氢化HMF的方法包括提供含有HMF和果糖的水溶液。 H 2 H 2和氢化催化剂。 HMF在等于或高于30℃的温度下相对于果糖选择性地氢化。制备四氢呋喃二甲醇(THFDM)的方法包括提供具有第一和第二催化剂的连续流动反应器,并向反应器中提供包含HMF的进料。 进料与第一催化剂接触以产生与第二催化剂接触以产生THFDM的呋喃二甲醇(FDM)。
    • 27. 发明申请
    • Heat shield
    • 隔热板
    • US20050115625A1
    • 2005-06-02
    • US10944214
    • 2004-09-17
    • James White
    • James White
    • F16L59/02F16L59/08F16L9/14
    • F16L59/021F01N13/14F01N13/148F01N2260/20F16L59/029F16L59/08
    • The present invention relates to a heat shield for pipes and tubes that is flexible, has an interior insulating layer, and has an exterior reflective layer. A shield may include a flap extending from the shield body for covering a portion of the component not already covered by the shield body. The interior layer faces the exhaust pipe, is made of woven silica, and may include a conductive coating. The exterior layer is an aluminum finish. The heat shield may be secured with stainless steel clamps or a lace and installed on an installed pipe or tube. The heat shield may be installed with an air gap between the pipe and the heat shield.
    • 本发明涉及一种柔性的管道和管的隔热罩,具有内部绝缘层,并且具有外部反射层。 屏蔽件可以包括从屏蔽体延伸的盖子,用于覆盖未被屏蔽体覆盖的部件的一部分。 内层面向排气管,由编织二氧化硅制成,并且可以包括导电涂层。 外层为铝合金。 隔热罩可以用不锈钢夹具或花边固定,并安装在安装的管道或管子上。 隔热罩可以安装在管道和隔热罩之间的空气间隙。
    • 29. 发明授权
    • Processes for steel making by oxygen refining of iron
    • 炼铁炼铁工艺
    • US4010027A
    • 1977-03-01
    • US577840
    • 1975-05-15
    • James White
    • James White
    • C21C5/36C21C7/02C22B9/10
    • C21C5/36
    • The present invention relates to a process for obtaining low phosphorus steel by oxygen refining of liquid iron in the presence of a slag containing lime, alumina, silica and iron oxides wherein at the beginning of the operation is added to the liquid metal a charge obtained by granulation and calcination of a mixture of an hydraulic aluminous cement with lime and magnesia in order to obtain at the end of the operation a slag containing______________________________________ CaO 40 to 60 % SiO.sub.2 5 to 25 % MgO 2.5 to 15 % Al.sub.2 O.sub.3 5 to 25 % Iron oxides expressed as Fe.sub.2 O.sub.3 10 to 35 % P.sub.2 O.sub.5 0.5 to 10 % ______________________________________ The process for obtaining steel by oxygen refining of iron known under the names of LD, LD-AC, Kaldo, OLP etc . . . which have made their appearance since a quarter of a century have seen their economic importance grow rapidly.In these processes pure oxygen is blown with the aid of a lance into a bath of liquid iron so as to oxidize and eliminate the impurities in the metal. It has been known for a long time that a certain quantity of CaO can be added to the iron in order to form a slag.It is useful to provide first of all an explanation of the use of the word slag which, often employed in different ways, can be a source of confusion. To the empty converter is added line (CaO) plus a melting flux (CaF.sub.2, bauxite . . . ) and then liquid iron. The mixture (CaO + flux), combines with the impurities in the iron to form a slag. The mixture (CaO + flux) is not itself a slag but enables a slag to be formed. Nevertheless, certain authors refer to the mixture (Cao + flux) as a slag, (for example in the two patents referred to later in the description of the present invention) whereas this is referred to in France, as a charge. This charge is called slag or self-forming slag by certain English writers. When refining of the iron is completed, the slag which floats on the surface, is poured from the converter, and is then referred to in the present text as slag.One of the most important roles of CaO is to facilitate the elimination of phosphorus by formation of calcium phosphate soluble in the slag. It is therefore important that the slag should be saturated with lime with the highest concentration possible.Unfortunately, it is observed that the lime solid at the temperature of the operation, approximately 1650.degree. C, has a tendency to form compounds such as 3CaO.SiO.sub.2 or 2CaO.SiO.sub.2 which are also solid and which isolate each particle of lime in such a way that the liquid slag is not saturated with lime and hence has a reduced effectiveness for the removal of phosphorus.This effect can be reduced by increasing the amount of lime but this plays the role of an inert charge which reduces the yield of the operation, alternatively, finely divided lime can be used but this involves other difficulties (milling, hygrometry of the quick lime, dust problems . . . ) or increasing the oxygen blowing time which is undesirable since it reduces the rate of use of the converter and increases the specific oxygen consumption or alternatively adding melting fluxes such as calcium borates (colemanite) or fluorspar, but these products are expensive and undesirable -- fluorspar particularly because of the deterioration of the refractory lining of the converter which it engenders and the risk of atmospheric pollution from its fluorine content.It has been proposed as a replacement for fluorine or borate compounds to use Al.sub.2 O.sub.3 and iron oxides. The reason is that these oxides act as a flux for the lime at the fabrication temperature of the steel (approximately 1650.degree. C) and thus facilitate the solution of lime in the slag and also increase the quantity of lime which can be dissolved in the slag before reaching saturation.It is important to explain clearly that the concentration ratios implied above are relative to the molten slag at the end of the refining operation, since it is when approaching this stage that the activity of the slag for removing impurities must be at its highest. Nevertheless, charges prepared in advance as in patents FR 2 005 176 and 2 077 587 can give rise to slags for which the final compositions can be widely different. These differences of composition are due both to variations in the initial metal composition and the ratio ##EQU1##Nevertheless, with normal slag compositions, these additions do not prevent the formation mentioned above of solid calcium silicates at the lime-slag interface. This inconvenience can be avoided by the addition of large quantities of Al.sub.2 O.sub.3 and Fe.sub.2 O.sub.3 but this solution is not desirable since it involves a large increase in the slag mass.The explanation of these phenomena can be found in the examination of published phase diagrams of the systems CaO -- Al.sub.2 O.sub.3 -- SiO.sub.2 and CaO -- (iron oxides) -- SiO.sub.2. In these systems up to high values of the ratios Al.sub.2 O.sub.3 /SiO.sub.2 and (iron oxides)/SiO.sub.2 the slag, when it dissolves CaO at the fabrication temperature of the steel becomes saturated not with CaO but with 3CaO.SiO.sub.2 or 2CaO.SiO.sub.2 both solid, the silicate formed depending on the value of the ratios previously mentioned. To avoid this effect, it is necessary that the ratios by weight of Al.sub.2 O.sub.3 /SiO.sub.2 and (iron oxides)/SiO.sub.2 are greater that 70/30 and 79/21 respectively. Under these conditions, the saturated slags are in equilibrium with CaO and the solid silicates mentioned do not appear. When the ratios Al.sub.2 O.sub.3 /SiO.sub.2 equal 70/30 and (iron oxides)/SiO.sub.2 equal 79/21, the lime contents of slags saturated at 1650.degree. C are respectively 64% and 55% by weight, that is to say that the slag weights are respectively about 9.8 and 9.5 times the weights of silica that they contain and that the ratio (weight of slags)/(weight of silica) increases as the ratios Al.sub.2 O.sub.3 /SiO.sub.2 and (iron oxides)/SiO.sub.2 increase.In studying phase relations in the system CaO -- MgO -- Al.sub.2 O.sub.3 -- (iron oxides) -- SiO.sub.2 one finds surprisingly when the ratio by weight MgO/R.sub.2 O.sub.3 (R.sub.2 O.sub.3 signifying here the sum Al.sub.2 O.sub.3 + iron oxides) is less than 0.65 approximately, the maximum value of the ratio by weight R.sub.2 O.sub.3 /SiO.sub.2 for which the slag is in equilibrium with solid CaO at 1650.degree. C can be increased from a minimum value of 0.8 approximately and that the total weight of slag becoming only six times the weight of silica, can be reduced.The same argument can be used for the more complete diagrams CaO -- Al.sub.2 O.sub.3 -- MgO -- iron oxides -- P.sub.2 O.sub.5 -- MnO despite the complexity of these diagrams. In effect one can see that if the ratio by weight MgO/R.sub.2 O.sub.3 is lower than 0.65 (R.sub.2 O.sub.3 indicating here the sum Al.sub.2 O.sub.3 plus iron oxides), the maximum value of the ratio by weight R.sub.2 O.sub.3 /(SiO.sub.2 + P.sub.2 O.sub.5) for which the slag is in equilibrium with solid CaO at 1650.degree. C can be increased from a minimum value of 0.8 and that the ratio weight of slag/weight of iron to be refined can be reduced. This is illustrated in example 1, numbers B(1), B(2), B(3), B(4).The use of slags having these values of the ratio MgO/R.sub.2 O.sub.3 offers the advantage that when the slags are saturated with CaO they are near saturation in MgO and consequently have relatively little corrosive action on the refractory linings of dolomite and magnesite normally used in these processes.The present invention enables a liquid slag to be obtained which fulfills the conditions indicated above.The rapidity of melting of the slags having the characteristics defined in the present invention offers the advantage of obtaining quickly a more homogeneous slag. Consequently, the period during which refining is hindered by the presence of solid calcium silicates is diminished due to an increase in reaction rates. The effect is to speed up the refining operation, to reduce oxygen consumption and wear on the refractories (since the time of contact between molten materials and the refractory linings is reduced).The present invention also enables the addition of fluorine compounds used in the basic process in which phosphorus is removed during the refining operations to be reduced or eliminated.An advantage of the slags in the present invention is that, given their chemical composition and notably the presence of MgO -- Al.sub.2 O.sub.3 -- oxides of iron, the activity of the iron oxides in the liquid slag is very high from the beginning of the refining operation. This minimises the passage into solution in the slag of iron oxides from metal oxidation and thus improves the process yield of steel. See example 1, numbers B 3 and B 4.A further advantage of the present invention is that the slag being always saturated with respect both to CaO and MgO it is much less corrosive than the slags currently employed to the magnesia or dolomitic refractory linings normally used in LD converters.Additionally the reduction in or elimination of the use of fluorspar in the charge reduces the cost of the process, reduces difficulties associated with the increasing rarety of fluorspar and avoids atmospheric pollution due to the emission of fluorine compounds during the blow.The process according to the invention consists of adding to the metal at the beginning of the operation, a charge with a composition calculated such that at the end of the operation a slag is obtained containing:______________________________________ CaO 40 to 60 % SiO.sub.2 5 to 25 % MgO 2.5 to 15 % Al.sub.2 O.sub.3 5 to 25 % Iron oxides expressed as Fe.sub.2 O.sub.3 10 to 35 % P.sub.2 O.sub.5 0.5 to 10 % ______________________________________ with:MgO/R.sub.2 O.sub.3 less than 0.65R.sub.2 o.sub.3 /(siO.sub.2 + P.sub.2 O.sub.5) greater than 0.8MgO/SiO.sub.2 between 0.3 and 0.7Al.sub.2 O.sub.3 /Fe.sub.2 O.sub.3 between 0.10 and 3 preferably between 0.15 and 2.5.Six components slags having the compositions shown above, have now to date been studied in oxygen steel making processes and the studies of the inventor have shown surprisingly that during their formation, the system maintains a very satisfactory meltability and fluidity and has specific effectiveness for obtaining low phosphorus steels.Preferably, the slags are obtained by introducing to the bath of liquid iron in the converter and during the refining process, a charge obtained by mixing, granulation, sintering or fusion after milling, natural or artificial products.Amongst the natural products are included:bauxites which provide Al.sub.2 O.sub.3, Fe.sub.2 O.sub.3limestones which provide CaCO.sub.3dolomites which provide MgCO.sub.3, CaCO.sub.3giobertite which provides MgCO.sub.3hematite ores which provide Fe.sub.2 O.sub.3Amongst the artificial products should be mentioned as particularly advantageous aluminous cements such as ciment fondu to which it is suggested to add appropriate quantities of CaO and MgO which can also be obtained from industrial processes to obtain the desired compositions.The compositions of the charge must be calculated to give a slag of final composition defined above. They depend obviously on the impurity content (Si, P, Mn, S, C, . . .) of the iron to be refined and on the ratio weight of slag/weight of iron to be refined which must be as low as possible.The impurity contents of irons vary widely and depend essentially on the quality of the iron ore and the method of manufacture. Considering the usual concentrations of Si, P, Mn, C . . . in irons as normally manufactured, such as:______________________________________ C between 4 and 5 % Si between 0.3 and 1.5 % P between 0.05 and 0.3 % Mn between 0.1 and 0.9 % etc. ______________________________________ and assuming a ratio weight of slag/weight of iron to be refined between 0.1 and 0.2 (the total weight of iron to be refined being: weight of liquid iron plus weight of scrap iron plus weight of rolling mill waste, etc . . .), it is possible to determine the composition of the charge required in the case of the 2 irons defined above. This gives:______________________________________ CaO between 40 and 85 % Al.sub.2 O.sub.3 between 10 and 27 % SiO.sub.2 between 0,5 and 5 % Iron oxides between 0,5 and 25 % (expressed as Fe.sub.2 O.sub.3 MgO between 5 and 17 % ______________________________________ For each iron composition to be refined and for each ratio weight of slag/total weight of iron to be refined, it is easy to calculate the composition of the charge to give the final slag composition previously defined.The slag obtained by virtue of its lime content has properties which make it hydraulic. It can be used alone or in mixtures with other known hydraulic materials, such as portland cements or aluminous cements or calcium sulphates. In view of its magnesia content, it is particularly suitable for road applications and similar work.
    • 本发明涉及一种在含有石灰,氧化铝,二氧化硅和氧化铁的炉渣存在下通过液态铁的氧气精炼获得低磷钢的方法,其中在操作开始时将液体金属添加到由 将水硬性水泥与石灰和氧化镁的混合物制粒和煅烧,以便在操作结束时获得含有CaO CaO 40-60%的SiO 2 5至25%} MgO 2.5至15%} Al 2 O 3 5至 25%}铁氧化物表示为Fe2O3 10〜35%} P2O5 0.5〜10%}通过氧化铁精炼铁,以LD,LD-AC,Kaldo,OLP等名义获得钢的工艺。 。 。 四分之一世纪以来,它们的经济重要性迅速增长。