公开(公告)号：US5210283A

公开(公告)日：1993-05-11

申请号：US884677

申请日：1992-05-18

申请人： Andrew P. Kahn ,  Robert G. Gastinger ,  Gangfeng Cai

发明人： Andrew P. Kahn ,  Robert G. Gastinger ,  Gangfeng Cai

IPC分类号： C07C43/13 ,  C08G65/20

CPC分类号： C08G65/20 ,  C07C43/135

摘要： Tetrahydrofuran is polymerized in the presence of a carboxylic acid anhydride and a solid acid catalyst that has been calcined at a temperature greater than about 600.degree. C. Calcined bleaching earth catalysts give THF polymer products having a narrow molecular weight distribution; calcining amorphous silica-aluminas improves their activity toward THF polymerization.

摘要翻译： 四氢呋喃在羧酸酐和在大于约600℃的温度下煅烧的固体酸催化剂存在下聚合。煅烧漂白土催化剂得到具有窄分子量分布的THF聚合物产物; 煅烧无定形二氧化硅 - 氧化铝改善了其对THF聚合的活性。

公开(公告)号：US4912081A

公开(公告)日：1990-03-27

申请号：US305896

申请日：1989-02-02

申请人： John A. Sofranko ,  Robert G. Gastinger ,  C. Andrew Jones

发明人： John A. Sofranko ,  Robert G. Gastinger ,  C. Andrew Jones

IPC分类号： B01J21/02 ,  B01J23/04 ,  C07C2/84

CPC分类号： B01J23/04 ,  B01J21/02 ,  C07C2/84 ,  C07C2521/02 ,  C07C2521/10 ,  C07C2523/04 ,  C07C2523/34

摘要： Compositions comprising boron-promoted reducible metal oxides (especially reducible oxides of Mn) containing alkali and alkaline earth metal components are disclosed, as well as use thereof for hydrocarbon conversions characterized by formation of by-product water. Particular processes comprise the conversion of methane to higher hydrocarbons and the dehydrogenation of dehydrogenatable hydrocarbons, e.g., dehydrogenation of C.sub.2 -C.sub.5 alkanes to form the corresponding olefins.

摘要翻译： 公开了包含含有碱金属和碱土金属组分的硼促进的可还原金属氧化物（特别是Mn的可还原氧化物）的组合物，以及其用于形成副产物水的烃转化的用途。 具体的方法包括将甲烷转化成高级烃，以及可脱氢烃的脱氢，例如C2-C5烷烃的脱氢形成相应的烯烃。

公开(公告)号：US4855330A

公开(公告)日：1989-08-08

申请号：US197868

申请日：1988-05-24

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08F2/44 ,  C08F212/10 ,  C08F283/10 ,  C08G18/62 ,  C08G18/63

CPC分类号： C08G18/63 ,  C08G2101/00

摘要： Low viscosity polymer polyols having high styrene/acrylonitrile ratios and good stability may be achieved by the use of epoxy resin-modified polyols as the base polyols. The styrene/acrylo-nitrile ratio may be as high as 95/5 and even 100/0 in the polymer polyols. The epoxy resin-modified polyols useful as base polyols may be made by reacting a polyol initiator having an active hydrogen functionality of 3 to 8 and one or more alkylene oxides with an epoxy resin. It is preferred that only a small part of the epoxy resin-modified base polyol be initially charged to the reactor, and that the balance, a relatively larger part, be a part of the monomer feed stream to the reactor.

公开(公告)号：US4448897A

公开(公告)日：1984-05-15

申请号：US377775

申请日：1982-05-13

申请人： Robert G. Gastinger

发明人： Robert G. Gastinger

IPC分类号： B01J23/22 ,  C07C51/25 ,  B01J21/06

CPC分类号： B01J23/22 ,  C07C51/252

摘要： Mixed vanadium-titanium oxides catalysts having intrinsic surface areas before surface modification, greater than about 40 m.sup.2 /gram are disclosed. These catalysts are suitable for use in the preparation of acetic acid by gas-phase oxidation of butenes.

摘要翻译： 公开了在表面改性之前具有大于约40m 2 / g的固有表面积的混合的钒 - 钛氧化物催化剂。 这些催化剂适用于通过丁烯气相氧化制备乙酸。