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    • 1. 发明授权
    • Reduction of acidity of organic polymeric isocyanates
    • 降低有机高分子异氰酸酯的酸度
    • US3925437A
    • 1975-12-09
    • US48981974
    • 1974-07-18
    • JEFFERSON CHEM CO INC
    • ROWTON RICHARD LEE
    • C07C265/14C08G18/08C08G18/76C07C119/042
    • C08G18/58C07C263/20C08G18/08C08G18/7664C07C265/14
    • The acidity of methylene-bridged polyphenyl polyisocyanate mixtures is reduced by mixing with the isocyanate mixture a lower alkylene oxide compound having from about 2 to about 4 carbons per molecule in an amount at least in excess of the stoichiometric amount, based upon the amount of acid present in the isocyanate. The admixing is preferably carried out at room temperature whereby the acidity of the isocyanate mixture is greatly reduced with no appreciable change in viscosity or equivalent weight. Methylene-bridged polyphenyl polyisocyanate mixtures treated by the process exhibit increased reactivity in the production of polyurethane and polyisocyanurate foams, elastomers and the like that have improved structural characteristics as compared to like materials prepared from untreated polyisocyanate mixtures.
    • 亚甲基桥接的聚苯基多异氰酸酯混合物的酸度通过与异氰酸酯混合物相比,通过与基于酸的量至少超过化学计量量的量,每分子具有约2至约4个碳的低级烯化氧化合物 存在于异氰酸酯中。 混合优选在室温下进行,由此异氰酸酯混合物的酸度大大降低,粘度或当量重量没有明显变化。 与通过未处理的多异氰酸酯混合物制备的类似材料相比,通过该方法处理的亚甲基桥连的聚苯基多异氰酸酯混合物在生产聚氨酯和聚异氰尿酸酯泡沫,弹性体等方面表现出增加的反应性,其具有改进的结构特征。
    • 6. 发明授权
    • Silicon containing molybdenum catalysts
    • 含硅的莫来石催化剂
    • US3787329A
    • 1974-01-22
    • US3787329D
    • 1970-12-28
    • JEFFERSON CHEM CO INC
    • CAVITT S
    • B01J31/16B01J31/22C08G65/26C07D1/08
    • C08G65/269B01J31/1608B01J31/2291B01J2231/72B01J2531/64
    • Stable, homogeneous silicon-containing molybdenum catalysts are prepared by incorporating silicon ligands into molybdenum compounds prepared by reacting an ammonia-containing molybdate with a hydroxy compound, for example, an organic primary or secondary alcohol, a glycol or a phenol. The hydrocarbon-soluble, silicon-containing molybdenum solutions are useful as homogeneous oxidation catalysts, particularly for the oxidation of olefins to olefin oxides. Olefin oxides are useful in the manufacture of non-toxic antifreeze urethanegrade polyols and many other applications. The silicon-containing molybdenum catalysts of the invention may also be used as metal plating solutions, lubricant additives, pigments, ammoxidation catalysts, printing inks, or solution components for organic laser devices. They may also be used as catalysts or co-catalysts for various polymerization processes, such as homopolymerization of isocyanates, isocyanatepolyol reactions, or olefin oxide polymerization reactions.
    • 通过将硅配体掺入通过使含氨的钼酸盐与羟基化合物,例如有机伯醇或仲醇,二醇或苯酚反应制备的钼化合物中,制备稳定的均匀含硅钼催化剂。 烃溶解的含硅钼溶液可用作均匀氧化催化剂,特别是用于将烯烃氧化成烯烃氧化物。 烯烃氧化物可用于制造无毒防冻剂和多种其它应用。 本发明的含硅钼催化剂也可用作有机激光器件的金属电镀溶液,润滑剂添加剂,颜料,氨氧化催化剂,印刷油墨或溶液组分。 它们也可以用作各种聚合方法的催化剂或助催化剂,例如异氰酸酯的均聚,异氰酸酯 - 多元醇反应或烯烃氧化物聚合反应。