-
公开(公告)号：US07919287B2
公开(公告)日：2011-04-05
申请号：US12429554
申请日：2009-04-24
CPC分类号： C12N9/78 , C12N9/96 , C12P7/42 , C12Y305/05001
摘要： A process is provided to improve the specific activity of an enzyme catalyst having nitrilase activity when converting glycolonitrile to glycolic acid under aqueous reaction conditions. Inclusion of an effective amount of at least one amine protectant improves the specific activity and catalytic productivity of the enzyme catalyst.
-
公开(公告)号：US07867737B2
公开(公告)日：2011-01-11
申请号：US12429490
申请日：2009-04-24
CPC分类号： C12N9/78 , C12N9/96 , C12P7/42 , C12Y305/05001
摘要： A process is provided to improve the specific activity of an enzyme catalyst having nitrilase activity when converting glycolonitrile to glycolic acid under aqueous reaction conditions. Inclusion of an effective amount of at least one amine protectant improves the specific activity and catalytic productivity of the enzyme catalyst.
-
公开(公告)号：US5085777A
公开(公告)日：1992-02-04
申请号：US586038
申请日：1990-08-31
申请人： Samuel D. Arthur
发明人： Samuel D. Arthur
IPC分类号： B01J31/02 , B01D69/12 , B01D71/54 , B01D71/56 , C07B61/00 , C07C67/00 , C07C67/14 , C07C68/02 , C07C69/96 , C08G71/00
CPC分类号： C08G71/00 , B01D69/125 , B01D71/54 , B01D71/56 , C07C69/96 , Y10S264/48 , Y10S264/62
摘要： The present invention is directed to an improved reverse osmosis membrane that shows surprisingly improved solute rejection and permeation properties. The membrane includes a separating layer of a polyamideurethane formed in situ by reaction of a haloformyloxy-substituted acyl haldide with a diamine-treated substrate.
摘要翻译： 本发明涉及一种改进的反渗透膜，其显示出惊人改善的溶质排斥和渗透性能。 膜包括通过卤代甲酰氧基取代的酰基卤与二胺处理的底物的反应原位形成的聚酰胺聚氨酯的分离层。
-
公开(公告)号：US07919288B2
公开(公告)日：2011-04-05
申请号：US12429563
申请日：2009-04-24
CPC分类号： C12N9/78 , C12N9/96 , C12P7/42 , C12Y305/05001
摘要： A process is provided to improve the specific activity of an enzyme catalyst having nitrilase activity when converting glycolonitrile to glycolic acid under aqueous reaction conditions. Inclusion of an effective amount of at least one amine protectant improves the specific activity and catalytic productivity of the enzyme catalyst.
摘要翻译： 提供了一种在水性反应条件下将乙醇腈转化成乙醇酸时，提高具有腈水解酶活性的酶催化剂的比活性的方法。 包含有效量的至少一种胺保护剂提高了酶催化剂的比活性和催化生产率。
-
公开(公告)号：US20090325250A1
公开(公告)日：2009-12-31
申请号：US12429543
申请日：2009-04-24
IPC分类号： C12P7/42
CPC分类号： C12N9/78 , C12N9/96 , C12P7/42 , C12Y305/05001
摘要： A process is provided to improve the specific activity of an enzyme catalyst having nitrilase activity when converting glycolonitrile to glycolic acid under aqueous reaction conditions. Inclusion of an effective amount of at least one amine protectant improves the specific activity and catalytic productivity of the enzyme catalyst.
-
6.发明授权Multilayer reverse osmosis membrane in which one layer is poly-meta-phenylene tetrahydrofuran-2,3,4,5-tetracarboxamide 失效多层反渗透膜，其中一层为聚间 - 亚苯基四氢呋喃-2,3,4,5-四甲酰胺
公开(公告)号：US4749488A
公开(公告)日：1988-06-07
申请号：US105695
申请日：1987-10-08
CPC分类号： B01D71/56 , B01D69/125 , C08G69/265
摘要： A multilayer membrane for performing reverse osmosis is disclosed. The membrane comprises a porous support and interfacially polymerized thereon a superposed layer of poly meta-phenylene tetrahydrofuran-2,3,4,5-tetracarboxamide in which up to 50 mole % of the tetrahydrofuran-2,3,4,5-tetracarboxamide units have been replaced with isophthalamide or terephthalamide units. The preferred material for forming the support is a polysulfone.
-
公开(公告)号：US07867739B2
公开(公告)日：2011-01-11
申请号：US12429576
申请日：2009-04-24
申请人： Robert Dicosimo , Anna Panova , Samuel D. Arthur , Henry Keith
发明人： Robert Dicosimo , Anna Panova , Samuel D. Arthur , Henry Keith
CPC分类号： C12N9/78 , C12N9/96 , C12P7/42 , C12Y305/05001
摘要： A process is provided to improve the specific activity of an enzyme catalyst having nitrilase activity when converting glycolonitrile to glycolic acid under aqueous reaction conditions. Inclusion of an effective amount of at least one amine protectant improves the specific activity and catalytic productivity of the enzyme catalyst.
-
公开(公告)号：US07867738B2
公开(公告)日：2011-01-11
申请号：US12429509
申请日：2009-04-24
CPC分类号： C12N9/78 , C12N9/96 , C12P7/42 , C12Y305/05001
摘要： A process is provided to improve the specific activity of an enzyme catalyst having nitrilase activity when converting glycolonitrile to glycolic acid under aqueous reaction conditions. Inclusion of an effective amount of at least one amine protectant improves the specific activity and catalytic productivity of the enzyme catalyst.
-
公开(公告)号：US5191111A
公开(公告)日：1993-03-02
申请号：US851886
申请日：1992-03-16
申请人： Samuel D. Arthur
发明人： Samuel D. Arthur
CPC分类号： C08G18/324 , B01D69/125 , B01D71/54 , B01D71/56 , C08G18/3246 , C08G18/712 , C08G18/773
摘要： The present invention is directed to a process of preparing isocyanate-substituted isophthaloyl chloride by heating a mixture of amino-substituted isophthalic acid, catalyst, phosgene and halogenated solvent under autogeneous pressure.
摘要翻译： 本发明涉及通过在自动压力下加热氨基取代的间苯二甲酸，催化剂，光气和卤代溶剂的混合物来制备异氰酸酯取代的间苯二甲酰氯的方法。
-
公开(公告)号：USRE34058E
公开(公告)日：1992-09-08
申请号：US784245
申请日：1991-10-29
申请人： Samuel D. Arthur
发明人： Samuel D. Arthur
CPC分类号： B01D71/56 , B01D69/125 , B01D71/54 , C08G18/324 , C08G18/3246 , C08G18/712 , C08G18/773
摘要： The present invention is directed to an improved reverse osmosis membrane that shows surprisingly improved solute rejection and permeation properties. The membrane includes a separating layer of a polyamideurea formed in situ by reaction of isocyanate-substituted acyl chloride and a diamine-treated microporous substrate.
-
-
-
-
-
-
-
-
-
搜索结果
25 条记录 (耗时 0.025 秒)
