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    • 1. 发明授权
    • Synthesis of bis(2,2-dinitropropyl)acetal (BDNPA)
    • 双(2,2-二硝基丙基)缩醛(BDNPA)的合成
    • US5648556A
    • 1997-07-15
    • US339138
    • 1994-11-14
    • R. Scott HamiltonRobert B. Wardle
    • R. Scott HamiltonRobert B. Wardle
    • C07C201/12C07B61/00C07C205/29C07C41/50C07C43/30
    • C07C201/12
    • A nonsolvent process of synthesizing bis(2,2-dinitropropyl)acetal (BDNPA) is disclosed. In the process, 2,2-dinitropropanol (DNPOH) is reacted at low temperature with an acetaldehyde source in the presence of an acid catalyst, such as a Lewis acid catalyst or protic acid catalyst. To inhibit by product formation, the reaction temperature is maintained from about -30.degree. C. to 30.degree. C. Upon completion of the reaction, the reaction solution is quenched with water and washed with an aqueous hydroxide solution. The hydroxide concentration should be sufficient to neutralize any acid formed during the quenching step and to solubilize unreacted 2,2-dinitropropanol as well as other aqueous soluble byproducts in the reaction solution. The BDNPA product is extracted with methyl tert-butyl ether (MTBE) or equivalent solvent. The organic solvent is evaporated to yield usable BDNPA product. The resulting yield is at least 50% based on the starting quantity of 2,2-dinitropropanol.
    • 公开了合成双(2,2-二硝基丙基)缩醛(BDNPA)的非溶剂方法。 在此过程中,在酸催化剂如路易斯酸催化剂或质子酸催化剂存在下,将2,2-二硝基丙醇(DNPOH)在低温下与乙醛源反应。 为了抑制产物形成,将反应温度保持在约-30℃至30℃。反应完成后,将反应溶液用水淬灭并用氢氧化钠水溶液洗涤。 氢氧化物浓度应足以中和淬灭步骤中形成的任何酸,并将未反应的2,2-二硝基丙醇以及其他水溶性副产物溶解在反应溶液中。 用甲基叔丁基醚(MTBE)或等效溶剂萃取BDNPA产物。 将有机溶剂蒸发,得到可用的BDNPA产物。 基于2,2-二硝基丙醇的起始量,所得产率为至少50%。
    • 2. 发明授权
    • High solids rocket motor propellants using diepoxy curing agents
    • 使用二环氧固化剂的高固体火箭发动机推进剂
    • US5554820A
    • 1996-09-10
    • US406573
    • 1995-03-20
    • Robert B. WardleR. Scott Hamilton
    • Robert B. WardleR. Scott Hamilton
    • C06B45/10
    • C06B45/10
    • A PBAN-based solid rocket motor propellant which includes more than 85% or more solids is provided. Propellants of this nature are possible using the combination of diepoxide curing agents and PBAN as a binder. The curing agents include diepoxides having 4 to about 10 carbon atoms. It has been observed that when a diepoxide curing agent is substituted for conventional curing agents, viscosities are significantly reduced, thus enabling the addition of higher percentages of solids in the propellant formulation. Total solids loading of over 85% are achievable while maintaining end-of-mix viscosities within acceptable ranges.
    • 提供了一种包含超过85%或更多固体的PBAN固体火箭发动机推进剂。 这种性质的推进剂可以使用二环氧化物固化剂和PBAN作为粘合剂的组合。 固化剂包括具有4至约10个碳原子的二环氧化物。 已经观察到,当二环氧化物固化剂代替常规固化剂时,粘度显着降低,因此能够在推进剂制剂中添加更高百分比的固体。 总固体含量超过85%是可以实现的,同时保持混合后的粘度在可接受的范围内。
    • 6. 发明授权
    • Polyether compounds having both imine and hydroxyl functionality and
methods of synthesis
    • 具有亚胺和羟基官能团的聚醚化合物和合成方法
    • US5414123A
    • 1995-05-09
    • US173425
    • 1993-12-23
    • R. Scott HamiltonGary K. LundRobert M. Hajik
    • R. Scott HamiltonGary K. LundRobert M. Hajik
    • C07C251/24C08G65/333
    • C07C251/24C08G65/33389
    • Polyether organic compounds are described which have both imine and hydroxyl functionality. These materials are synthesized by reacting a primary amine with an aldehyde or ketone to form a Schiff base. By definition, a Schiff base comprises the reaction product of a primary amine and an aldehyde. In this case, however, unlike conventional Schiff bases, the reaction product possesses both hydroxyl and Schiff base functionality. In one embodiment of the invention, such a product is produced by the reaction of a polyoxyalkyleneamine (Jeffamine) with p-nitrobenzaldehyde and glycidol. The result is a polyether having both hydroxyl and Schiff base functionality. The compounds produced in this manner are particularly useful as bonding agents in the formulation of solid propellants. The bonding agents provide superior performance, while avoiding the problems encountered when using existing bonding agents. The observed superior performance is believed to arise from the ability of the materials to bond within the propellant matrix by means of the hydroxyl groups, and to align with oxidizers, such as ammonium perchlorate, by means of the Schiff bases.
    • 描述了具有亚胺和羟基官能团的聚醚有机化合物。 这些材料通过使伯胺与醛或酮反应形成席夫碱来合成。 根据定义,希夫碱包括伯胺和醛的反应产物。 然而,在这种情况下,与常规席夫碱不同,反应产物具有羟基和席夫碱功能。 在本发明的一个实施方案中,通过聚氧亚烷基胺(Jeffamine)与对硝基苯甲醛和缩水甘油的反应制备这种产物。 其结果是具有羟基和席夫碱官能团的聚醚。 以这种方式制备的化合物特别可用作固体推进剂制剂中的粘合剂。 粘合剂提供优异的性能,同时避免使用现有粘合剂时遇到的问题。 据认为观察到的优异性能是由材料通过羟基在推进剂基质内键合的能力产生的,并且通过席夫碱与氧化剂如高氯酸铵一致。
    • 8. 发明授权
    • Synthesis of bis(2,2-dinitropropyl) formal (BDNPF)
    • 双(2,2-二硝基丙基)正己烷(BDNPF)的合成
    • US5449835A
    • 1995-09-12
    • US339140
    • 1994-11-14
    • R. Scott HamiltonRobert B. Wardle
    • R. Scott HamiltonRobert B. Wardle
    • B01J27/02C07B61/00C07C201/12C07C205/29C07C41/50C07C43/30
    • C07C201/12
    • A nonsolvent process of synthesizing bis(2,2-dinitropropyl)formal (BDNPF) is disclosed. In the process, 2,2-dinitropropanol (DNPOH) is reacted at low temperature with a formaldehyde source in the presence of a protic acid catalyst, such as H.sub.2 SO.sub.4, HCl, H.sub.3 PO.sub.4, or HBr. To inhibit byproduct formation, the reaction temperature is maintained from about -30.degree. C. to 30.degree. C. Upon completion of the reaction, the reaction solution is quenched with water and washed with an aqueous hydroxide ion solution. The hydroxide ion concentration should be sufficient to neutralize the protic acid catalyst during the quenching step and to solubilize unreacted 2,2-dinitropropanol as well as other aqueous soluble byproducts in the reaction solution. The BDNPF product is extracted with a low boiling temperature polar organic solvent, such as methyl tert-butyl ether (MTBE) or equivalent solvent. The organic solvent is evaporated to yield usable BDNPF product. The resulting yield is at least 60% based on the starting quantity of 2,2-dinitropropanol.
    • 公开了合成双(2,2-二硝基丙基)甲醛(BDNPF)的非溶剂方法。 在此过程中,在质子酸催化剂如H 2 SO 4,HCl,H 3 PO 4或HBr存在下,将2,2-二硝基丙醇(DNPOH)在低温下与甲醛源反应。 为了抑制副产物形成,将反应温度保持在约-30℃至30℃。反应完成后,将反应溶液用水淬灭并用氢氧化钠水溶液洗涤。 氢氧根离子浓度应足以在淬火步骤期间中和质子酸催化剂,并将未反应的2,2-二硝基丙醇以及其它水溶性副产物溶解在反应溶液中。 BDNPF产物用低沸点极性有机溶剂如甲基叔丁基醚(MTBE)或等效溶剂萃取。 将有机溶剂蒸发,得到可用的BDNPF产物。 基于2,2-二硝基丙醇的起始量,所得产率为至少60%。
    • 10. 发明授权
    • Solid propellant bonding agents and methods for their use
    • 固体推进剂粘合剂及其使用方法
    • US09181140B1
    • 2015-11-10
    • US08204044
    • 1993-12-30
    • R. Scott HamiltonGary K. LundRobert M. Hajik
    • R. Scott HamiltonGary K. LundRobert M. Hajik
    • C06B23/00C06B29/22
    • C06B45/10C06B29/22
    • Bonding agents for use in formulating solid propellants are described. The bonding agents have a Schiff base, or Schiff base and hydroxyl or amine functionality. These materials are synthesized by reacting a primary amine with an aldehyde to form a Schiff base. By definition, a Schiff base comprises the reaction product of a primary amine and an aldehyde. In one embodiment of the invention, such a product is produced by the reaction of a polyoxyalkyleneamine (JEFFAMINE®) with p-nitrobenzaldehyde and glycidol. The result is a polyether having both hydroxyl and Schiff base functionality. The bonding agents provide superior performance, while avoiding problems, such as ammonia production during processing, encountered when using existing bonding agents. Propellants formulated using these bonding agents have mechanical properties within acceptable ranges.
    • 描述了用于配制固体推进剂的粘合剂。 粘合剂具有希夫碱,席夫碱和羟基或胺官能团。 这些材料通过使伯胺与醛反应形成席夫碱来合成。 根据定义,希夫碱包括伯胺和醛的反应产物。 在本发明的一个实施方案中,通过聚氧亚烷基胺与对硝基苯甲醛和缩水甘油的反应制备这种产物。 其结果是具有羟基和席夫碱官能团的聚醚。 粘合剂提供优异的性能,同时避免在使用现有的粘合剂时遇到的加工过程中遇到的氨生产等问题。 使用这些粘结剂配制的推进剂具有可接受范围内的机械性能。