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    • 2. 发明授权
    • Photosensitive redox solutions
    • 光敏氧化还原溶液
    • US4173521A
    • 1979-11-06
    • US196804
    • 1971-11-08
    • Robert C. Wade
    • Robert C. Wade
    • C07F5/04D06L4/30D06M11/20D06M11/82D06M13/184D06M13/192D06M13/342D06M13/503D06M13/51D06M15/333D06P1/22G03C1/705G03C1/73B01J1/10B01J31/12
    • C07F5/04D06L3/10D06M11/20D06M11/82D06M13/184D06M13/192D06M13/342D06M13/503D06M13/51D06M15/333D06P1/221G03C1/705G03C1/73Y10S204/909Y10S502/522
    • The invention provides aqueous solutions of (1) the reaction product of anhydrous trimethyl borate with titanium tetrachloride and (2) polyvinyl alcohol, preferably not exceeding about 0.5 weight percent of each. These solutions have a pH of about 1 but when ammonium hydroxide is added the pH may be raised to about 10 without precipitation of titanium or gelation of the polyvinyl alcohol.When the pH of the above solutions is adjusted to between about 2 and about 10, the solutions are photosensitive. When these solutions are in a confined zone, sunlight or actinic radiation in the range between ultraviolet light and the lower wavelengths of the visible spectrum causes oxygen from the air above the solutions to be consumed until it is all gone. Then, reduction of the colorless dissolved Ti(IV) compound to the dark blue Ti(III) state occurs without precipitation of the Ti(III) product or reoxidation to Ti(IV). The blue Ti(III) solution is quickly reoxidized by reexposure to air. Similar photosensitive solutions are formed with polyvinyl alcohol and other Ti(IV) compounds, such as (1) the tetravalent titanium compound conforming substantially to the formula Cl.sub.2 Ti(OR).sub.2 where R is H, CH.sub.3, C.sub.2, H.sub.5, C.sub.3 H.sub.7 or C.sub.4 H.sub.9 ; (2) titanyl sulfate, and (3) titanyl chloride. The polyvinyl alcohol may be replaced by other complexing agents, such as N-hydroxyethylenediaminetriacetic acid, diethanolglycine, glucoheptanoic acid, arabonic acid, glusonic acid, galactonic acid, saccharic acid, mucic acid, and the sodium and ammonium salts of these compounds.
    • 本发明提供(1)无水三甲基硼酸盐与四氯化钛的反应产物和(2)聚乙烯醇的水溶液,优选不超过其重量的约0.5%重量。 这些溶液的pH值约为1,但当添加氢氧化铵时,可以将pH升高至约10,而不会沉淀钛或聚乙烯醇的凝胶化。 当将上述溶液的pH调节至约2至约10时,溶液是光敏的。 当这些溶液处于限制区域时,紫外光和可见光谱的较低波长范围内的太阳光或光化辐射会使来自溶液上方的空气的氧气被消耗,直到其全部消失。 然后,将无色溶解的Ti(IV)化合物还原成深蓝色Ti(III)状态,而不会使Ti(III)产物沉淀或再次氧化成Ti(IV)。 蓝色Ti(III)溶液通过再次暴露于空气中迅速再氧化。 类似的感光溶液由聚乙烯醇和其它Ti(IV)化合物形成,例如(1)基本上符合式Cl2Ti(OR)2的四价钛化合物,其中R是H,CH 3,C 2,H 5,C 3 H 7或C 4 H 9; (2)硫酸氧钛,和(3)二氯氧化钛。 聚乙烯醇可以被其它络合剂如N-羟基乙二胺三乙酸,二乙醇甘氨酸,葡庚糖酸,阿拉伯糖酸,糠酸,半乳糖酸,糖酸,粘酸,以及这些化合物的钠盐和铵盐代替。
    • 3. 发明授权
    • Photosensitive redox solutions
    • 光敏氧化还原溶液
    • US4002574A
    • 1977-01-11
    • US552365
    • 1975-02-24
    • Robert C. Wade
    • Robert C. Wade
    • C07F5/04C07F7/00D06M11/20D06M11/82D06M15/333G03C1/73B01J27/10B01J31/38B01J1/10
    • G03C1/73C07F5/04C07F7/006D06M11/20D06M11/82D06M15/333
    • The invention provides aqueous solutions of (1) the reaction product of anhydrous trimethyl borate with titanium tetrachloride and (2) polyvinyl alcohol, preferably not exceeding about 0.5 weight percent of each. These solutions have a pH of about 1, but when ammonium hydroxide is added, the pH may be raised to about 10 without precipitation of titanium or gelation of the polyvinyl alcohol.When the pH of the above solutions is adjusted to between about 2 and about 10, the solutions are photosensitive. When these solutions are in a confined zone, sunlight or actinic radiation in the range between ultraviolet light and the lower wavelengths of the visible spectrum causes oxygen from the air above the solutions to be consumed until it is all gone. Then, reduction of the colorless dissolved Ti(IV) compound to the dark blue Ti(III) state occurs without precipitation of the Ti(III) product or reoxidation to Ti(IV). The blue Ti(III) solution is quickly reoxidized by reexposure to air. Similar photosensitive solutions are formed with polyvinyl alcohol and other Ti(IV) compounds, such as (1) the tetravalent titanium compound conforming substantially to the formula Cl.sub.2 Ti(OR).sub.2 where R is H, CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7 or C.sub.4 H.sub.9 ; (2) titanyl sulfate, and (3) titanyl chloride. The polyvinyl alcohol may be replaced by other complexing agents, such as N-hydroxyethylenediaminetriacetic acid, diethanolglycine, glucoheptanoic acid, arabonic acid, gluconic acid, galactonic acid, saccharic acid, mucic acid, and the sodium and ammonium salts of these compounds.
    • 本发明提供(1)无水三甲基硼酸盐与四氯化钛的反应产物和(2)聚乙烯醇的水溶液,优选不超过其重量的约0.5%重量。 这些溶液的pH值约为1,但当添加氢氧化铵时,pH可以升高至约10,而不会使钛沉淀或聚乙烯醇凝胶化。
    • 7. 发明授权
    • Stabilized aqueous solutions of sodium borohydride
    • 稳定的硼氢化钠水溶液
    • US3933676A
    • 1976-01-20
    • US459058
    • 1974-04-08
    • Robert C. Wade
    • Robert C. Wade
    • C01B6/00D21C9/10C09K3/00D21C3/04
    • D21C9/1084C01B6/00
    • This invention relates to stabilized aqueous solutions of sodium borohydride containing soluble zinc in the form of sodium zincate. They may contain from about 35 to about 46.9 percent sodium hydroxide and from about 9.35 to about 12.9 percent sodium borohydride and 0.5 to 3 percent zinc which is preferentially added as zinc oxide and reacted with the sodium hydroxide present in the solution to form sodium zincate. These solutions may be used to react with sodium bisulfite to form solutions of sodium hydrosulfite in excellent yield. Such hydrosulfite solutions do not form trace amounts of hydrogen sulfide and do not darken or corrode copper based paper machine wires in contrast to hydrosulfite solutions which contain no soluble zinc.
    • 本发明涉及含有锌酸钠形式的可溶性锌的硼氢化钠稳定水溶液。 它们可以含有约35至约46.9%的氢氧化钠和约9.35至约12.9%的硼氢化钠和0.5至3%的锌,优选以氧化锌的形式加入并与溶液中存在的氢氧化钠反应形成锌酸钠。 这些溶液可用于与亚硫酸氢钠反应形成具有优异产率的连二亚硫酸钠溶液。 与不含可溶性锌的连二亚硫酸盐溶液相比,这种连二亚硫酸盐溶液不会形成痕量的硫化氢,并且不会使铜基造纸机线变暗或腐蚀。