-
公开(公告)号：US4785055A
公开(公告)日：1988-11-15
申请号：US65442
申请日：1987-06-23
IPC分类号： C08F8/22 , C08F220/54 , D21H17/37 , D21H17/45
CPC分类号： D21H17/455 , C08F220/54 , C08F8/22 , D21H17/37 , D21H17/45
摘要： Aqueous solutions of polyacrylamides are acidified and then reacted with halogen gas or hypohalites to provide N-halogenated polymers. The product of the process are good wet strength additives for paper made from aqueous pulps of paper making fibers.
摘要翻译： 将聚丙烯酰胺的水溶液酸化，然后与卤素气体或次卤酸盐反应以提供N-卤代聚合物。 该方法的产品是用造纸纤维纸浆制成的纸张的良好湿强度添加剂。
-
公开(公告)号：US4929687A
公开(公告)日：1990-05-29
申请号：US859681
申请日：1986-05-05
IPC分类号： B65D65/42 , C08F8/22 , C08F20/52 , C08F220/54 , C08F220/56 , D21H13/10 , D21H17/37 , D21H17/45
CPC分类号： D21H17/455 , C08F220/54 , C08F8/22 , D21H17/37 , D21H17/45
摘要： Novel N-chloroamide polymers and a process for the production thereof are disclosed.
摘要翻译： 公开了新的N-氯代酰胺聚合物及其生产方法。
-
公开(公告)号：US4556483A
公开(公告)日：1985-12-03
申请号：US641660
申请日：1984-08-17
申请人： Yun-Lung Fu , Samuel S. Wang
发明人： Yun-Lung Fu , Samuel S. Wang
CPC分类号： B03D1/012 , B03D2201/02 , B03D2203/02
摘要： New and improved collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores are disclosed. The collector compositions comprise at least one hydrocarboxycarbonyl thiourea compound selected from compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen or R.sup.2 ; R.sup.2 is selected from saturated and unsaturated hydrocarbyl radicals, hydrocarboxy radicals and aromatic radicals; and R.sup.3 is selected from saturated and unsaturated hydrocarbyl radicals, alkyl polyether radicals and aromatic radicals, said R.sup.2 and R.sup.3 radicals, optionally, and independently, being substituted by polar groups selected from halogen, nitrile and nitro groups. The use of the hydrocarboxycarbonyl thiourea collectors provides excellent metallurgical recoveries of sulfide mineral values in froth flotation processes conducted over a very broad range of pH including acid, neutral and mildly alkaline pH.
摘要翻译： 公开了用于从基础金属硫化物矿石中选择矿物值的泡沫浮选工艺中使用的新的和改进的收集器组合物。 收集器组合物包含至少一种选自下式的化合物的羧基羰基硫脲化合物：其中R 1是氢或R 2; R2选自饱和和不饱和烃基，烃羧基和芳族基; R 3选自饱和和不饱和烃基，烷基聚醚基团和芳族基团，所述R 2和R 3基团任选地和独立地被被选自卤素，腈和硝基的极性基团取代。 使用烃羧基硫脲收集器提供优异的冶金回收率，在非常广泛的pH范围内进行的泡沫浮选工艺中的硫化物矿物质值，包括酸，中性和弱碱性pH。
-
公开(公告)号：US4659853A
公开(公告)日：1987-04-21
申请号：US821297
申请日：1986-01-22
申请人： Yun-Lung Fu , Peter J. Strydom
发明人： Yun-Lung Fu , Peter J. Strydom
IPC分类号： C07C335/02 , C07C155/02 , C07C155/08
CPC分类号： C07C335/02
摘要： Derivatives of alkoxy, aryloxy and alkene isothiocyanates are produced by the reaction of a haloformate, an alkali, alkaline earth metal, lead or ammonium thiocyanate and a compound having the formula R.sup.1 YH wherein R.sup.1 is alkyl, aryl or alkoxy, Y is oxygen, sulfur or NR.sup.2 and R.sup.2 is hydrogen or R.sup.1, in the presence of a solvent or water and a catalyst.
摘要翻译： 烷氧基，芳氧基和烯烃异硫氰酸酯的衍生物通过卤代甲酸酯，碱金属，碱土金属，硫氰酸铅或硫氰酸铵与具有式R1YH的化合物的反应产生，其中R 1是烷基，芳基或烷氧基，Y是氧，硫或 NR 2和R 2是氢或R 1，在溶剂或水和催化剂的存在下。
-
公开(公告)号：US4657688A
公开(公告)日：1987-04-14
申请号：US806585
申请日：1985-12-09
申请人： Yun-Lung Fu , Samuel S. Wang
发明人： Yun-Lung Fu , Samuel S. Wang
CPC分类号： B03D1/012 , B03D2201/02 , B03D2203/02 , B03D2203/025
摘要： New and improved collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores are disclosed. The collector compositions comprise at least one hydrocarboxycarbonyl thionocarbamate compound selected from compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each, independently, selected from saturated and unsaturated hydrocarbyl radicals, alkyl polyether radicals and aromatic radicals, or such radicals optionally substituted by polar groups selected from halogen, nitrile and nitro groups. The use of the hydrocarboxycarbonyl thionocarbamate collectors provides excellent metallurgical recoveries of sulfide mineral values in froth flotation processes conducted over a broad range of pH conditions including acid, neutral and mildly alkaline pH.
摘要翻译： 公开了用于从基础金属硫化物矿石中选择矿物值的泡沫浮选工艺中使用的新的和改进的收集器组合物。 收集器组合物包含至少一种选自下式的化合物的巯基羰基硫代氨基甲酸酯化合物：其中R 1和R 2各自独立地选自饱和和不饱和的烃基，烷基聚醚基团和芳族基团，或者任选地被 选自卤素，腈和硝基的极性基团。 使用碳代羰基硫代氨基甲酸酯收集器提供了在宽范围的pH条件（包括酸，中性和弱碱性pH）下进行的泡沫浮选工艺中硫化矿物价值的优良冶金回收率。
-
公开(公告)号：US4584097A
公开(公告)日：1986-04-22
申请号：US641657
申请日：1984-08-17
申请人： Yun-Lung Fu , Samuel S. Wang
发明人： Yun-Lung Fu , Samuel S. Wang
CPC分类号： B03D1/012 , B03D2201/02 , B03D2203/02
摘要： New and improved collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores are disclosed. The collector compositions comprise at least one hydrocarboxycarbonyl thionocarbamate compound selected from compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each, independently, selected from saturated and unsaturated hydrocarbyl radicals, alkyl polyether radicals and aromatic radicals, or such radicals optionally substituted by polar groups selected from halogen, nitrile and nitro groups. The use of the hydrocarboxycarbonyl thionocarbamate collectors provides excellent metallurgical recoveries of sulfide mineral values in froth flotation processes conducted over a broad range of pH conditions including acid, neutral and mildly alkaline pH.
-
公开(公告)号：USRE32827E
公开(公告)日：1989-01-10
申请号：US79629
申请日：1987-07-30
申请人： Yun-Lung Fu , Samuel S. Wang
发明人： Yun-Lung Fu , Samuel S. Wang
IPC分类号： B03D1/012
CPC分类号： B03D1/012 , B03D2201/02 , B03D2203/02
摘要： New and improved collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores are disclosed. The collector compositions comprise at least one hydrocarboxycarbonyl thionocarbamate compound selected from compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each, independently, selected from saturated and unsaturated hydrocarbyl radicals, alkyl polyether radicals and aromatic radicals, or such radicals optionally substituted by polar groups selected from halogen, nitrile and nitro groups. The use of the hydrocarboxycarbonyl thionocarbamate collectors provides excellent metallurgical recoveries of sulfide mineral values in froth flotation processes conducted over a broad range of pH conditions including acid, neutral and mildly alkaline pH.
-
公开(公告)号：USRE32786E
公开(公告)日：1988-11-22
申请号：US079628
申请日：1987-07-30
申请人： Yun-Lung Fu , Samuel S. Wang
发明人： Yun-Lung Fu , Samuel S. Wang
IPC分类号： B03D1/012
CPC分类号： B03D1/012 , B03D2201/02 , B03D2203/02
摘要： New and improved collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores are disclosed. The collector compositions comprise at least one hydrocarboxycarbonyl thiourea compound selected from compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen or R.sup.2 ; R.sup.2 is selected from saturated and unsaturated hydrocarbyl radicals, hydrocarboxy radicals and aromatic radicals; and R.sup.3 is selected from saturated and unsaturated hydrocarbyl radicals, alkyl polyether radicals and aromatic radicals, said R.sup.2 and R.sup.3 radicals, optionally, and independently, being substituted by polar groups selected from halogen, nitrile and nitro groups. The use of the hydrocarboxycarbonyl thiourea collectors provides excellent metallurgical recoveries of sulfide mineral values in froth flotation processes conducted over a very broad range of pH including acid, neutral and mildly alkaline pH.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.019 秒)
