会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Process for the preparation of ceric alkoxides
    • 制备二氧化铈的方法
    • US4489000A
    • 1984-12-18
    • US521787
    • 1983-08-09
    • Peter S. GradeffFred G. Schreiber
    • Peter S. GradeffFred G. Schreiber
    • C07C27/00C07C29/70C07C31/28C07C67/00C07F5/00
    • C07C29/70C07F5/003
    • A process is provided for preparing ceric alkoxides, which comprises reacting ceric ammonium nitrate with an alcohol, including a lower aliphatic alcohol, under anhydrous conditions in the presence of an anhydrous base at a temperature within the range from about -30.degree. C. to about 200.degree. C. but preferably from 0.degree. to about 150.degree. C. until ceric alkoxide and the nitrate salt of the base are formed; ceric alkoxides of higher alcohols can be prepared by transetherification of the resulting ceric alkoxide with the higher alcohol, either simultaneously or sequentially, at a temperature within the range from about -30.degree. C. to about 200.degree. C., thereby displacing the lower aliphatic alcohol and forming the ceric alkoxide of the higher alcohol, while distilling off free lower aliphatic alcohol in the course of the transetherification, to drive it towards completion; the nitrates formed during the reaction can be separated from the reaction mixture and the alkoxides isolated pure or as complexes with the alcohol, or in some cases the alkoxides can be used without separation from the reaction mixture in the presence of the nitrates.
    • 提供了一种用于制备二氧化铈的方法,其包括在无水条件下,在无水碱存在下,在约-30℃至约约30℃的温度下,使硝酸铈铵与包括低级脂族醇在内的醇反应 200℃,但优选0℃至150℃,直到形成了铈醇盐和碱的硝酸盐; 高级醇的高级醇的烷氧基化物可以通过在约-30℃至约200℃的温度范围内同时或依次地将所得的高级醇与高级醇进行酯交换来制备,从而将低级脂族 酒精和形成高级醇的二氧化铈,同时在脱碳过程中蒸馏出游离的低级脂族醇,使其完成; 在反应过程中形成的硝酸盐可以从反应混合物中分离出来,并且醇盐被分离为纯的或与醇的复合物,或在某些情况下,在硝酸盐存在下,可以不从反应混合物中分离出醇盐。
    • 4. 发明授权
    • Process for the preparation of ceric alkoxides
    • 制备二氧化铈的方法
    • US4663439A
    • 1987-05-05
    • US674640
    • 1984-11-26
    • Peter S. GradeffFred G. Schreiber
    • Peter S. GradeffFred G. Schreiber
    • C07C29/68C07C27/00C07C29/70C07C31/28C07C67/00C07F5/00
    • C07C29/70C07C31/28C07F5/003
    • A process is provided for preparing ceric alkoxides, which comprises reacting ceric ammonium nitrate complexed with and in solution in ethylene or propylene glycol ether or tetrahydrofuran with an anhydrous alkali metal alkoxide at a temperature within the range from about -30.degree. C. to about 200.degree. C., preferably from 0.degree. to about 150.degree. C., until ceric alkoxide and the nitrate salt of the base are formed; the nitrate formed during the reaction is insoluble in the glycol ether and tetrahydrofuran and can be separated from the reaction mixture, and the cerium alkoxide when soluble in the glycol ether or tetrahydrofuran can be isolated from the solution pure, or as the complex with the alcohol or with the solvent, or in some cases the alkoxide can be used without separation from the reaction mixture in the presence of the nitrate.
    • 提供了一种制备二氧化铈的方法,其包括使与乙烯或丙二醇醚或四氢呋喃中的溶液中的和硝酸铈配合的硝酸铈铵与无水碱金属醇盐在约-30℃至约200℃的温度下反应 优选0℃至约150℃,直到形成了铈醇盐和碱的硝酸盐; 反应过程中形成的硝酸盐不溶于乙二醇醚和四氢呋喃,可与反应混合物分离,可溶于乙二醇醚或四氢呋喃中的醇盐可以从溶液中纯化,或作为与醇的络合物 或在一些情况下,在硝酸盐存在下,可以不用分离反应混合物使用醇盐。
    • 9. 发明授权
    • Process for preparing colloidal ceric oxide and complexes thereof with
free organic acids
    • 制备胶体氧化铈及其与游离有机酸的配合物的方法
    • US4647401A
    • 1987-03-03
    • US678424
    • 1984-12-05
    • Peter S. GradeffFred G. SchreiberVincent J. CharteJohn F. Davison
    • Peter S. GradeffFred G. SchreiberVincent J. CharteJohn F. Davison
    • B01J13/00C01F17/00C07C51/41C07F5/00C09D191/00C09D3/26C09K11/07
    • C07C309/00C01F17/0012C01F17/0043C07C51/414C07F5/00C01P2002/01
    • A process is provided for preparing colloidal dispersions of ceric dioxide in inert organic media which comprises(1) heating(a) ceric dioxide comprising ammonium nitrate or ammonium and nitrate ions in an amount within the range from about 3 to about 14% by weight of the ceric dioxide and a member selected from the group consisting of water, methanol, acetic acid and mixtures thereof in an amount usually from about 10 to about 60 g per mole of CeO.sub.2, sufficient to effect reaction with(b) an organic acid having from about ten to about forty carbon atoms(c) an organic solvent selected from the group consisting of(i) aliphatic and aromatic hydrocarbons, such as petroleum spirits, benzene, toluene, chlorobenzene, chlorotoluene, etc.(ii) aliphatic and cycloaliphatic ethers, such as isopropyl ether or dicyclohexyl ether(iii) aliphatic and cycloaliphatic ketones, such as diisobutylketone or cyclohexanone at a temperature within the range from about 60.degree. to about 200.degree. C. thereby effecting dispersion of the ceric dioxide;(2) removing water, methanol, acetic acid or mixtures thereof, and separating undissolved particles of solid material such as ammonium nitrate and undissolved cerium dioxide.Association complexes are also provided, composed of ceric dioxide and organic acid having from about ten to about forty carbon atoms in a molar ratio CeO.sub.2 /organic acid of at least 4:1.
    • 提供了一种用于制备惰性有机介质中二氧化铈的胶体分散体的方法,其包括(1)加热(a)包含硝酸铵或铵和硝酸根离子的二氧化铈,其量为约3至约14重量% 二氧化铈和选自水,甲醇,乙酸及其混合物的成员,其量通常为每摩尔CeO 2约10至约60g,足以与(b)有机酸反应 约10至约40个碳原子(c)选自(i)脂族和芳族烃如石油醚,苯,甲苯,氯苯,氯甲苯等的有机溶剂。(ii)脂族和脂环族醚, 例如异丙醚或二环己基醚(iii)脂族和脂环族酮,例如二异丁基酮或环己酮,温度范围为约60-约200℃。 分散二氧化铈; (2)除去水,甲醇,乙酸或其混合物,并分离固体物质如硝酸铵和未溶解的二氧化铈的未溶解颗粒。 还提供了由二氧化铈和具有至少4:1的CeO 2 /有机酸的摩尔比约10至约40个碳原子的有机酸组成的缔合络合物。
    • 10. 发明授权
    • Process for preparing colloidal ceric oxide and complexes thereof with
free organic acids
    • 制备胶体氧化铈及其与游离有机酸的配合物的方法
    • US4545923A
    • 1985-10-08
    • US460694
    • 1983-01-24
    • Peter S. GradeffVincent J. CharteFred G. SchreiberJohn F. Davison
    • Peter S. GradeffVincent J. CharteFred G. SchreiberJohn F. Davison
    • B01F17/00B01J13/00C01F17/00C07C51/41C07F5/00C07F17/00C07C143/24C11C1/00
    • C07C309/00C01F17/0012C01F17/0043C07C51/414C07F5/00C01P2002/01
    • A process is provided for preparing colloidal dispersions of ceric dioxide in inert organic media which comprises(1) heating(a) ceric dioxide comprising ammonium nitrate or ammonium and nitrate ions in an amount within the range from about 3 to about 14% by weight of the ceric dioxide and a member selected from the group consisting of water, methanol, acetic acid and mixtures thereof in an amount usually from about 10 to about 60 g per mole of CeO.sub.2, sufficient to effect reaction with(b) an organic acid having from about ten to about forty carbon atoms(c) an organic solvent selected from the group consisting of(i) aliphatic and aromatic hydrocarbons, such as petroleum spirits, benzene, toluene, chlorobenzene, chlorotoluene, etc.(ii) aliphatic and cycloaliphatic ethers, such as isopropyl ether or dicyclohexyl ether(iii) aliphatic and cycloaliphatic ketones, such as diisobutylketone or cyclohexanone at a temperature within the range from about 60 to about 200.degree. C. thereby effecting dispersion of the ceric dioxide;(2) removing water, methanol, acetic acid or mixtures thereof, and separating undissolved particles of solid material such as ammonium nitrate and undissolved cerium dioxide.Association complexes are also provided, composed of ceric dioxide and organic acid having from about ten to about forty carbon atoms in a molar ratio CeO.sub.2 /organic acid of at least about 4:1.
    • 提供了一种用于制备惰性有机介质中二氧化铈的胶体分散体的方法,其包括(1)加热(a)包含硝酸铵或铵和硝酸根离子的二氧化铈,其量为约3至约14重量% 二氧化铈和选自水,甲醇,乙酸及其混合物的成员,其量通常为每摩尔CeO 2约10至约60g,足以与(b)有机酸反应 约10至约40个碳原子(c)选自(i)脂族和芳族烃如石油醚,苯,甲苯,氯苯,氯甲苯等的有机溶剂。(ii)脂族和脂环族醚, 例如异丙醚或二环己基醚(iii)脂族和脂环族酮,例如二异丁基酮或环己酮,温度范围为约60至约200℃,从而实现 二氧化铈的分散体; (2)除去水,甲醇,乙酸或其混合物,并分离固体物质如硝酸铵和未溶解的二氧化铈的未溶解颗粒。 还提供了由具有约10至约40个碳原子的二氧化铈和具有至少约4:1的摩尔比CeO 2 /有机酸的有机酸组成的缔合络合物。