-
公开(公告)号：US5516738A
公开(公告)日：1996-05-14
申请号：US250407
申请日：1994-05-27
IPC分类号： B01J31/16 , B01J31/18 , B01J31/22 , C07B61/00 , C07D301/06 , C07D301/12 , C07D303/04 , C07D303/38
CPC分类号： C07D303/38 , B01J31/182 , C07D301/12 , B01J2231/72 , B01J2531/72 , B01J2531/96
摘要： A method for epoxidizing olefins is provided wherein an olefin and an oxygenating agent are contacted together in the presence of a manganese complex catalyst having at least one manganese atom coordinated with a nitrogen-containing ligand such that the manganese atom to coordinated nitrogen atom is 1:3 and thereafter isolating the resultant epoxide product. Catalyst compositions are also provided formed from the adsorption of the manganese complex catalyst onto a solvent insoluble support.
摘要翻译： 提供了一种环氧化烯烃的方法，其中烯烃和氧化剂在具有与含氮配体配位的至少一个锰原子的锰络合物催化剂存在下接触在一起，使得锰原子与配位氮原子为1： 3，然后分离所得环氧化物产物。 还提供催化剂组合物，其通过将锰络合物催化剂吸附到溶剂不溶性载体上而形成。
-
公开(公告)号：US5329024A
公开(公告)日：1994-07-12
申请号：US40316
申请日：1993-03-30
IPC分类号： B01J31/16 , B01J31/18 , B01J31/22 , C07B61/00 , C07D301/06 , C07D301/12 , C07D303/04 , C07D303/38 , C07D301/14
CPC分类号： C07D303/38 , B01J31/182 , C07D301/12 , B01J2231/72 , B01J2531/72 , B01J2531/96
摘要： A method for epoxidizing olefins is provided wherein an olefin and an oxygenating agent are contacted together in the presence of a manganese complex catalyst having at least one manganese atom coordinated with a nitrogen-containing ligand such that the manganese atom to coordinated nitrogen atom is 1:3 and thereafter isolating the resultant epoxide product. Catalyst compositions are also provided formed from the adsorption of the manganese complex catalyst onto a solvent insoluble support.
摘要翻译： 提供了一种环氧化烯烃的方法，其中烯烃和氧化剂在具有与含氮配体配位的至少一个锰原子的锰络合物催化剂存在下接触在一起，使得锰原子与配位氮原子为1： 3，然后分离所得环氧化物产物。 还提供催化剂组合物，其通过将锰络合物催化剂吸附到溶剂不溶性载体上而形成。
-
公开(公告)号：US5977348A
公开(公告)日：1999-11-02
申请号：US900753
申请日：1997-07-25
申请人： Rosemarie Harris , Sharon H. Jureller , Judith L. Kerschner , Peter T. Trzasko , Robert W. R. Humphreys
发明人： Rosemarie Harris , Sharon H. Jureller , Judith L. Kerschner , Peter T. Trzasko , Robert W. R. Humphreys
CPC分类号： C08B37/0096 , C08B31/00 , Y02P20/544
摘要： This invention relates to a process for chemically modifying polysaccharides in a densified fluid. In particular, the modification includes esterification and/or etherification of a starch in supercritical carbon dioxide. The process is advantageous in that it allows for a high degree of substitution without the use of organic solvents or repeated reactions.
摘要翻译： 本发明涉及在致密化流体中化学改性多糖的方法。 特别地，改性包括在超临界二氧化碳中淀粉的酯化和/或醚化。 该方法的优点在于，其允许高度取代而不使用有机溶剂或重复反应。
-
公开(公告)号：US5194416A
公开(公告)日：1993-03-16
申请号：US798396
申请日：1991-11-26
CPC分类号： C11D3/3932 , B01J31/182 , B01J2531/72
摘要： Novel bleach and oxidation catalysts are reported as well as a bleaching-detergent composition employing these catalysts and a method for removing stains from substrates. The catalysts are manganese complexes of the formula:[LMn.sup.IV (OR).sub.3 ]Y,whereinMn is manganese in the +4 oxidation state;R is a C.sub.1 -C.sub.20 radical selected from the group consisting of alkyl, cycloalkyl, aryl, benzyl and radical combinations thereof;at least two R radicals may also be connected to one another so as to form a bridging unit between two oxygens that coordinate with the manganese;L is a ligand selected from a C.sub.3 -C.sub.60 radical having at least 3 nitrogen atoms coordinating with the manganese; andY is an oxidatively-stable counterion.
-
-
-
搜索结果
4 条记录 (耗时 0.033 秒)
