摘要:
A method is described for synthesizing decaborane wherein at least about 90% of the boron atoms in the decaborane are the .sup.10 B isotope, comprising the steps of: (a) reacting boric acid with a C.sub.1 to C.sub.10 alkanol to form a .sup.10 B-alkyl borate wherein at least about 90% of the boron atoms in the boric acid are the .sup.10 B isotope; (b) reducing the .sup.10 B-alkyl borate to form an alkali metal .sup.10 B-borohydride; (c) converting the alkali metal .sup.10 B-borohydride to a .sup.10 B-tetradecahydroundecaborate ion; and (d) converting the .sup.10 B-tetradecahydroundecaborate ion to .sup.10 B-decaborane. Methods of preparing tetradecahydroundecaborate ions and decaborane from alkali metal borohydrides are also described.
摘要:
Methods and agents for extracting cesium and strontium ions from aqueous solutions, including aqueous fission product waste solutions, are disclosed using substituted metal dicarbollide and/or dicarbaextranide ions containing one or more chemical groups that increase solubility of the substituted metal dicarbollide or dicarbaextranide ions in non-nitrated, non-chlorinated solvents, or using metal dicarbollide or dicarbaextranide ion-substituted silicones.
摘要翻译:公开了使用取代的金属二碳化物和/或二乙二醇+ E,ot + n + EE的离子从水溶液中提取铯和锶离子的方法和试剂,所述方法和试剂含有一种或多种增加其溶解度的化学基团 在非硝化的非氯化溶剂中使用取代的金属二碳化物或二碳黑+ E,otl n + EE ide离子,或者使用金属二碳化物或二乙基葡萄糖+ E,otl n + EE理想离子取代的有机硅。
摘要:
Methods and agents for extracting cesium and strontium ions from aqueous solutions, including aqueous fission product waste solutions, are disclosed using substituted metal dicarbollide ions containing one or more chemical groups that increase solubility of the substituted metal dicarbollide ion in non-nitrated, non-chlorinated solvents, or using metal dicarbollide ion-substituted silicones.
摘要:
Composite acrylic polymer rods having clear central regions and colored peripheral regions are prepared by polymerizing a flowable solution comprising acrylic monomer, dye and, dissolved therein, acrylic polymer, around a rod of acrylic polymer. Alternatively, a rod of acrylic polymer surrounded by a flowable mixture comprising partially polymerized acrylic monomer and dye is subjected to polymerization conditions to polymerize the flowable mixture.
摘要:
Vinylsilylalkoxy arylbenzotriazol monomers such as 2-[3'-t-butyl-5'-(3-"-dimethylvinylsilylpropoxy)-2'-hydroxy-phenyl]-5-methoxybenzotriazole are disclosed. These monomers can be incorporated in optically clear silicone polymers to form intraocular lenses, contact lenses, and the like, which have UV absorbing properties.
摘要:
Ultraviolet light absorbing compositions comprising 2-(2'-hydroxy-5'-acryloyloxyalkoxyphenyl(-2H-benzotrizoles, and copolymers thereof with one or more other monomers copolyermizable therewith, particularly acrylic monomers, are useful in the manufacture of ocular devices, particularly intraocular lenses and contact lenses.
摘要:
The tetradecahydroundecaborate(-1) anion is synthesized from a metal borohydride by heating a suspension of the borohydride ion in a solvent, such as diglyme, with agitation at a temperature of from 85.degree. C. to about 135.degree. C. and adding an alkyl halide. The B.sub.11 H.sub.14.sup.- anion obtained is useful in the synthesis of decaborane, an intermediate in formation a carborane-based polymers.
摘要翻译:{PG,1]通过在溶剂例如二甘醇二甲醚中加热硼氢化物离子的悬浮液,在85(20℃至约20℃)的温度下,从金属硼氢化合物合成十四氢十硼酸盐({31 1) 135 {20 {0℃并加入烷基卤化物。 B {HD 11 {L H {HD 14 {HU {31 {L阴离子获得可用于合成十硼烷,形成中间体为碳硼烷基聚合物。