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73 条记录 (耗时 0.025 秒)

    Extrudable gas generant for hybrid air bag inflation system
    25.
    发明授权
    Extrudable gas generant for hybrid air bag inflation system 失效

    公开(公告)号：US5538568A

    公开(公告)日：1996-07-23

    申请号：US434231

    申请日：1995-05-04

    申请人： Robert D. Taylor ,  Marc R. Andros

    发明人： Robert D. Taylor ,  Marc R. Andros

    IPC分类号： B60R21/26 ,  C06B45/00 ,  C06B45/10 ,  C06D5/00 ,  C06D5/06 ,  C06B31/08

    CPC分类号： C06B45/00 ,  C06B45/10 ,  C06D5/06

    摘要： The solvent-free gas generant composition of this invention, comprising an oxidizer and a thermosettable resin, cures in about an hour or less at room temperature and within 5 minutes at 135.degree. F. Void-free and crack-free gas generant grains are formed and cured in an extrusion process in which the temperature may be from about room temperature to about 200.degree. F. The thermosettable resin is at least one of the group consisting of an acrylate-terminated polybutadiene, a hydroxy-terminated polybutadiene/diisocyanate reaction product, an ester of a polybutadiene polycarboxylic acid and an epoxy modified polybutadiene and/or a hydroxyl-terminated polybutadiene, and a styrene/polyester copolymer.

    Enhanced thermal and ignition stability azide gas generant
    26.
    发明授权
    Enhanced thermal and ignition stability azide gas generant 失效
    增强热和点火稳定性气体发生器

    公开(公告)号：US5223184A

    公开(公告)日：1993-06-29

    申请号：US651157

    申请日：1991-02-06

    申请人： Robert D. Taylor ,  Gary L. Smith ,  Ritchie Olsen

    发明人： Robert D. Taylor ,  Gary L. Smith ,  Ritchie Olsen

    IPC分类号： C06B35/00 ,  C06D5/06

    CPC分类号： C06B35/00 ,  C06D5/06

    摘要： Multiple processes and apparatuses for improving the prior system of making gas generant pellets or tablets made of sodium azide, molybdenum disulfide and sulfur wherein powdered ingredients thereof are slurried in water, subjected to wet grinding, spray dried to a powdered material which is molded into pellets or tablets which find use in vehicle crash bags or inflators.The first improvement to the old process and apparatus involves adjusting the basicity of the water to a pH of greater than 8.0 up to about 12.5 via the addition of sodium hydroxide, followed by the addition of sulfur and molybdenum disulfide and finally the sodium azide whereby azide addition is made to a basic mixture of the other ingredients thereby keeping hydrazoic acid concentration levels below about 3.times.10EXP(-3) moles per liter.The second improvement to the old process and apparatus involves (1) softening the water before its use in slurrying the powdered ingredients to remove undesirable Ca and Mg ions and/or (2) adding sodium sulfide and/or tri-sodium phosphate to the slurry to precipitate any remaining undesirable Ca, Mg, Pb, Fe, Mn and Cu ions as non-hazardous compounds. Each of these metal ions is reduced to no more than about 25 ppm or less.Also these two improvements are joined together to form a system wherein even better safety results occur.The improvements not only extend to the final product produced, but to the intermediates at the slurry stage as well as at the spray dried stage, which products differ due to significant elimination or minimization of hydrazoic acid and other contaminant metal ion species above mentioned.

    摘要翻译： 用于改进制备由叠氮化钠，二硫化钼和硫磺制成的气体发生剂颗粒或片剂的先前系统的多种方法和装置，其中将粉末成分在水中成浆，经湿磨后，喷雾干燥成粉末状物料， 或用于车辆碰撞袋或充气器的片剂。 对旧方法和装置的第一改进包括通过加入氢氧化钠将水的碱度调节至大于8.0至约12.5的pH，然后加入硫和二硫化钼，最后加入叠氮化钠，由此叠氮化物 加入其他成分的碱性混合物，从而保持浓氢酸浓度低于每升约3×10 6 P（-3）摩尔。 对旧方法和装置的第二改进包括（1）在使用之前软化水，以粉碎粉末成分以除去不需要的Ca和Mg离子和/或（2）向浆料中加入硫化钠和/或三磷酸钠 以沉淀任何残留的不合需要的Ca，Mg，Pb，Fe，Mn和Cu离子作为无害化合物。 这些金属离子中的每一种都被还原成不超过约25ppm或更少。 而且，这两个改进措施被连接在一起以形成其中发生甚至更好的安全结果的系统。 这些改进不仅延伸到所生产的最终产品，而且延伸到浆料阶段的中间体以及在喷雾干燥阶段，由于显着消除或最小化上述的叠氮酸和其它污染金属离子物质，这些产物不同。