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    • 52. 发明申请
    • METHOD TO PRODUCE A TRANSITION METAL CARBIDE FROM A PARTIALLY REDUCED TRANSITION METAL COMPOUND
    • 从部分还原过渡金属化合物生产过渡金属碳化物的方法
    • WO1997010176A1
    • 1997-03-20
    • PCT/US1996014521
    • 1996-09-10
    • THE DOW CHEMICAL COMPANY
    • THE DOW CHEMICAL COMPANYDUNMEAD, Steven, D.NILSEN, Kevin, J.LASHER, Gabrielle, R.REPMAN, Joseph, F.BARKER, Hobart, A.WEIMER, Alan, W.
    • C01B31/30
    • C01B32/949C01B32/914C01P2002/72C01P2004/62C01P2006/11C01P2006/12C01P2006/80
    • A transition metal carbide is formed from a precursor mixture comprising at least one of the group consisting of: a transition metal, a transition metal carbide and a transition metal oxide. The precursor mixture may contain the desired transition metal carbide (for example, WC), but if the desired transition metal carbide is present in the precursor mixture, there is necessarily a significant amount of another compound such as a transition metal oxide, undesired carbide (for example, W2C) or transition metal. The method involves forming an admixture by mixing the precursor mixture with a sufficient amount of carbon to carburize the precursor mixture to the transition metal carbide and reacting the admixture in an inert or reducing atmosphere at a temperature for a time sufficient to convert the admixture to the transition metal carbide, wherein the admixture is reacted in the presence of a means to enhance transfer of heat into the admixture, an inert or reducing gas flowing through at least a portion of the admixture or combination thereof.
    • 过渡金属碳化物由包含过渡金属,过渡金属碳化物和过渡金属氧化物中的至少一种的前体混合物形成。 前体混合物可以含有所需的过渡金属碳化物(例如WC),但是如果所需的过渡金属碳化物存在于前体混合物中,则必须有大量的其它化合物,例如过渡金属氧化物,不期望的碳化物 例如,W2C)或过渡金属。 该方法包括通过将前体混合物与足量的碳混合来形成混合物,以将前体混合物渗碳至过渡金属碳化物,并将该混合物在惰性或还原性气氛中,在足以将混合物转化为 过渡金属碳化物,其中所述混合物在增加热量进入所述混合物的手段的存在下反应,惰性或还原气体流过所述混合物的至少一部分或其组合。
    • 55. 发明申请
    • FORMULATIONS CONTAINING POLY-(NITRILE OXIDE) REAGENTS
    • 含有多(氧化镍)试剂的配方
    • WO1997003142A1
    • 1997-01-30
    • PCT/US1996011498
    • 1996-07-10
    • THE DOW CHEMICAL COMPANY
    • THE DOW CHEMICAL COMPANYLYSENKO, ZenonWESSLING, Ritchie, A.ROSE, Gene, D.
    • C09D179/04
    • C08G73/0655C07C291/06C07D261/04
    • Curable compositions contain: (a) at least one nitrile oxide monomer which contains on average more than one stable nitrile oxide group per molecule; and (b) at least one polyunsaturated monomer which: (1) has a weight average molecular weight of no more than 5000; and (2) contains on average more than one insaturated moiety which contains a sterically-unhindered carbon-carbon or carbon-nitrogen double bond or triple bond. The monomers are selected such that either the nitrile oxide monomers or the polyunsaturated monomers or both contain on average more than two reactive groups per molecule, and such that the equivalent ratio of nitrile oxide to unsaturated moieties is more than 0.5:1 and less than 2:1. The compositions can be used in coatings, composites, laminates and injection moldings.
    • 可固化组合物含有:(a)每分子平均含有多于一个稳定的氧化腈基团的至少一种氧化腈单体; 和(b)至少一种多不饱和单体:(1)重均分子量不大于5000; 和(2)平均包含多于一个不饱和部分,其含有空间上不受阻的碳 - 碳或碳 - 氮双键或三键。 选择单体使得氧化腈单体或多不饱和单体或两者每分子平均含有多于两个反应性基团,并且使得氧化腈与不饱和部分的当量比大于0.5:1且小于2 :1。 该组合物可用于涂料,复合材料,层压材料和注射成型品。
    • 56. 发明申请
    • METHOD OF COATING, METHOD FOR MAKING CERAMIC-METAL STRUCTURES, METHOD FOR BONDING, AND STRUCTURES FORMED THEREBY
    • 涂料方法,制备陶瓷 - 金属结构的方法,其结合方法和形成的结构
    • WO1997000734A1
    • 1997-01-09
    • PCT/US1996010180
    • 1996-06-24
    • THE DOW CHEMICAL COMPANY
    • THE DOW CHEMICAL COMPANYPYZIK, Aleksander, J.ROSSOW, Harold, E.OTT, Jack, J.DESHMUKH, Uday, V.
    • B05D01/00
    • C04B41/4507B05D1/00C03C17/007C03C2217/42C03C2217/45C03C2217/475C04B37/006C04B2235/5436C04B2235/5445C04B2235/658C04B2235/6581C04B2237/121C04B2237/366C04B2237/58C04B2237/597C04B2237/61C04B2237/708C23C24/10C23C26/02Y10T156/1038C04B41/5025C04B41/4523C04B41/51
    • A method, and the structure formed thereby, of coating a fluidizable material onto a surface of a substrate wherein the substrate is not wettable by the fluidizable material includes depositing a layer of powder particles on the surface of the substrate, the powder particles being wettable by the fluidizable material; contacting the fluidizable material to the layer of powder particles; and allowing the fluidizable material to wick between the powder particles and to contact the surface of the substrate. Another aspect is a method for making a ceramic-metal tape which includes depositing a layer of a non-wettable ceramic powder onto a solid form; depositing a layer of a wettable powder onto the layer of the non-wettable ceramic powder; contacting a metal to the layer of the wettable powder; heating the metal to a temperature in which the metal melts and wicks through the layer of the wettable powder, and cooling the metal-infiltrated structure to solidify the metal. Another aspect is a method for bonding ceramic bodies together and the layered structure formed therefrom. The method includes coating a surface of a first ceramic body with non-reactive powder particles and reactive powder particles; abutting a surface of a second ceramic body against the coated surface of the first ceramic body; contacting the coating between the first ceramic body and the second ceramic body with a metal; and heating the metal so that the metal infiltrates through the powder particles.
    • 一种方法和由此形成的结构,将可流化材料涂覆到基底的表面上,其中基底不被可流化材料润湿,包括在基底的表面上沉积一层粉末颗粒,粉末颗粒可被 可流化材料; 使可流化材料接触粉末颗粒层; 并且允许可流动材料在粉末颗粒之间吸收并接触基底的表面。 另一方面是制造陶瓷 - 金属带的方法,其包括将不可润湿的陶瓷粉末层沉积在固体形式上; 将一层可湿性粉末沉积在不可湿性陶瓷粉末的层上; 使金属与可湿性粉剂层接触; 将金属加热到金属熔化并浸渍通过可湿性粉末层的温度,并冷却金属浸渗结构以固化金属。 另一方面是将陶瓷体接合在一起的方法和由其形成的层状结构。 该方法包括用非反应性粉末颗粒和反应性粉末颗粒涂覆第一陶瓷体的表面; 将第二陶瓷体的表面抵靠第一陶瓷体的涂覆表面; 在第一陶瓷体和第二陶瓷体之间用金属接触涂层; 并加热金属使金属渗入粉末颗粒。
    • 59. 发明申请
    • PROCESS FOR PREPARING A STORAGE-STABLE MIXTURE OF POLYISOCYANATE AND PHOSPHATE
    • 制备储存稳定的聚异氰酸酯和磷酸盐混合物的方法
    • WO1996033231A1
    • 1996-10-24
    • PCT/US1996004120
    • 1996-03-26
    • THE DOW CHEMICAL COMPANY
    • THE DOW CHEMICAL COMPANYLOWENKRON, Steven, B.FERENCE, Donald, M.MARTONE, Daniel, P.
    • C08G18/70
    • C08G18/776C08G18/3885C08G18/70
    • A process for preparing a liquid, storage-stable composition containing an organic polyisocyanate and an acid phosphate is disclosed. The process includes the steps of (1) heating a mixture of a polyisocyanate and an acid phosphate at a temperature in the range of from 60 DEG C to 190 DEG C for a time such that no phase separation occurs upon cooling the reaction mixture to ambient temperature, the mixture containing dissolved gases; and (2) subjecting the mixture to a negative pressure sufficient to remove at least a portion of the dissolved gases therefrom. The negative pressurization significantly slows the rate of carbon dioxide evolution thereafter and therefore enables much longer term storage-stability than is obtainable when the negative pressurization step is not performed, beacause it reduces problems associated with pressurization of containers.
    • 公开了一种制备含有机多异氰酸酯和酸式磷酸盐的液体储存稳定组合物的方法。 该方法包括以下步骤:(1)在60℃至190℃的温度范围内加热多异氰酸酯和酸式磷酸酯的混合物一段时间,使得在将反应混合物冷却至环境时不发生相分离 温度,混合物含有溶解气体; 和(2)使混合物经受足以从其中除去至少一部分溶解气体的负压。 负压显着降低了二氧化碳的释放速度,因此能够比不进行负压步骤时可获得更长期的储存稳定性,因为它减少了与容器加压有关的问题。