Abstract: A catalyst composition, and olefin polymerization process using same, formed from a mixture of a non-aluminoxane aluminum compound, an inorganic oxide and a transition metal bidentate or tridentate complex in certain prescribed proportions. The composition can be formed in a single step or in-situ in the polymerization reaction zone. The resultant catalyst has high activity and is capable of producing high molecular weight olefin products without reactor fouling.
Abstract: The present invention is directed to the removal of nitrogen and sulfur containing impurities from high molecular weight petroleum feedstock obtained from fluid cracking catalyst or distillation zone of a petroleum treatment plant. The present process comprises first treating C12 and higher hydrocarbon petroleum feedstock having nitrogen and sulfur containing compounds therein with a porous, particulate adsorbent comprising a silica matrix having an effective amount of metal atoms therein to cause the adsorbent to have Lewis acidity of at least 500 ?mol/g and then treating the resultant feedstock to catalytic hydrodesulfurization to produce a hydrocarbon fuel having low sulfur and nitrogen content.
Type:
Grant
Filed:
December 19, 2002
Date of Patent:
August 8, 2006
Assignee:
W.R. Grace & Co. - Conn.
Inventors:
Markus Friedrich Manfred Lesemann, Constance Setzer
Abstract: The present invention is directed to a novel one-step method for forming a supported catalyst complex of high activity by substantially simultaneously contacting a bidentate or tridentate ligand forming compound, a transition metal compound and a chromium immobilized Lewis acid support-agglomerate. The catalyst can be formed prior to polymerization of olefins or within the polymerization reaction zone.
Type:
Grant
Filed:
April 10, 2002
Date of Patent:
October 25, 2005
Assignee:
W.R. Grace & Co.-Conn.
Inventors:
Keng-Yu Shih, Dean Alexander Denton, Rimantas Glemza
Abstract: The present invention is directed to a novel one-step method for forming a supported catalyst complex of high activity by substantially simultaneously contacting a bidentate or tridentate ligand forming compound, a transition metal compound and a Lewis acid support-activator agglomerate. The catalyst can be formed prior to polymerization of olefins or within the polymerization reaction zone.
Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an acid component, at least about 0.1% by weight of a source of fluoride ions, and a stable foam forming amount of a foaming agent system composed of a non-ionic alkyl polyglycoside alone or with additional non-ionic foaming agents. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition in the form of a foam also disclosed.
Abstract: A catalyst useful in cracking of hydrocarbon feedstock comprising particulate material composed of at least 70 weight percent zeolite and the remainder substantially composed of silica sol, alumina sol or mixtures thereof; wherein the particulate material has a kinetic conversion activity of at least about 3; and compositions for fluid catalytic cracking of petroleum feedstock comprising said catalyst and a second particulate material having a kinetic conversion activity of less than 3 wherein said catalyst composition having a kinetic conversion activity of at least about 2.
Type:
Grant
Filed:
April 13, 2001
Date of Patent:
April 26, 2005
Assignee:
W. R. Grace & Co.-Conn.
Inventors:
Wu-Cheng Cheng, Philip S. Deitz, Xinjin Zhao
Abstract: A chromium containing catalyst wherein the chromium atom is in one of its higher valence states and is immobilized to a support-agglomerate composed of at least one inorganic oxide component and at least one ion-containing layered component.
Type:
Grant
Filed:
April 10, 2002
Date of Patent:
May 11, 2004
Assignee:
W. R. Grace & Co.-Conn.
Inventors:
Keng-Yu Shih, Dean Alexander Denton, Rimantas Glemza
Abstract: The present invention is directed to certain catalyst compositions and processes that are capable of reducing sulfur compounds normally found as part of the gasoline fraction streams of fluid catalytic cracking processes. The present invention requires an equilibrium cracking catalyst composition comprises at least one Y-type zeolite having kinetic conversion activity of at least about 3 in combination with a Lewis acid containing alumina composite present in at least 50 weight percent of the composition. The resultant equilibrium catalyst composition has a kinetic conversion activity of at least about 2.
Type:
Grant
Filed:
April 13, 2001
Date of Patent:
October 21, 2003
Assignee:
W. R. Grace & Co.-Conn
Inventors:
Xinjin Zhao, Wu-Cheng Cheng, John Allen Rudesill, Richard Franklin Wormsbecher, Pilip Stephen Deitz
Abstract: A catalyst suitable for use in fluid catalytic cracking of petroleum feedstock in the form of particulate of crystalline zeolite having a coating on it6s surface comprising bayerite phase alumina.
Type:
Grant
Filed:
April 13, 2001
Date of Patent:
August 12, 2003
Assignee:
W. R. Grace & Co. - Conn.
Inventors:
Wu-Cheng Cheng, Xinjin Zhao, Philip Stephen Deitz
Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an acid component, at least about 0.1% by weight of a source of fluoride ions, and a stable foam forming amount of a foaming agent system composed of a non-ionic alkyl polyglycoside alone or with additional non-ionic foaming agents. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition in the form of a foam also disclosed.
Abstract: A novel precious metal doped porous metal catalyst is disclosed. The precious metal is present in from 0.01 to 1.5 weight percent and distributed throughout the particles of porous metal to provide a surface to bulk ratio distribution of not greater than 60. The present invention is further directed to a process of forming said doped catalyst and to improved processes of catalytic hydrogenation of organic compounds.
Abstract: A novel precious metal doped porous metal catalyst is disclosed. The precious metal is present in from 0.01 to 1.5 weight percent and distributed throughout the particles of porous metal to provide a surface to bulk ratio distribution of not greater than 60. The present invention is further directed to a process of forming said doped catalyst and to improved processes of catalytic hydrogenation of organic compounds.
Abstract: A heterogeneous catalyst composition suitable for olefinic polymerization and to methods of forming polyolefinic products using said composition. The catalyst composition comprises an anionic metalloid silane modified inorganic oxide and the cationic remnant of a transition metal bidentate or tridentate compound represented by the formula:
T—[—SiR′R″ODM(Q)3]a−n[Cat]b+m
wherein each of the symbols above is defined within the subject application.
Abstract: Substantially linear vinylene carbonate/1-olefin copolymers, a process of forming the same, and packaging materials incorporating the same are described. These copolymers are formed by reacting the component monomers in the presence of a single component, non-ionic polymerization catalyst at relatively low temperatures and pressures.
Type:
Grant
Filed:
March 23, 1999
Date of Patent:
November 7, 2000
Assignee:
Cryovac, Inc.
Inventors:
Donald Albert Bansleben, Stefan Kilian Friedrich, Robert Howard Grubbs, Robert Tan Li, Chunming Wang, Todd Ross Younkin
Abstract: An oxygen scavenging composition composed of a carrier material and a metal-loaded cationic exchange material having the metal in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The composition may form at least a part of the interior surface of the container or be present therein in the form of a film, mat, sachet or ceramic.
Type:
Grant
Filed:
June 21, 1999
Date of Patent:
July 11, 2000
Assignee:
W. R. Grace & Co. -Conn.
Inventors:
Thomas Andrew Blinka, Drew Ve Speer, William Alfred Feehley, Jr.
Abstract: An oxygen scavenging composition composed of a carrier material and a metal-loaded cationic exchange material having the metal in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The composition may form at least a part of the interior surface of the container or be present therein in the form of a film, mat, sachet or ceramic.
Type:
Grant
Filed:
March 25, 1998
Date of Patent:
November 30, 1999
Assignee:
W. R. Grace & Co. -Conn.
Inventors:
Thomas Andrew Blinka, Drew Ve Speer, William Alfred Feehley, Jr.
Abstract: An oxygen scavenging composition composed of a carrier and a metal coated, inert, porous particulate material having the metal substantially in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The composition may form at least a part of the interior surface of the container or be present therein in the form of a film, mat, sachet or ceramic.
Type:
Grant
Filed:
May 23, 1997
Date of Patent:
November 16, 1999
Assignee:
W.R. Grace & Co.-Conn.
Inventors:
James George Miller, Thomas Andrew Blinka, Drew Ve Speer, William Alfred Feehley, Jr.
Abstract: An oxygen scavenging composition composed of a carrier and an ascorbate based agent impregnated inert, porous particulate material distributed throughout the carrier. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The composition may form at least a part of the interior surface of the container or be present therein in the form of a film, mat, sachet or ceramic.
Type:
Grant
Filed:
November 21, 1997
Date of Patent:
November 2, 1999
Assignee:
W. R. Grace & Co.-Conn.
Inventors:
Cynthia Louise Ebner, Thomas Andrew Blinka, Ronald Lee Cotterman, Drew Ve Speer
Abstract: An oxygen scavenging agent and compositions capable of providing good oxygen absorption capabilities which contain said agent, wherein the agent is a modified anionic hydrotalcite particulate material.
Abstract: An electrode composition for use as an electrode in a non-aqueous battery system. The electrode composition contains an electrically active powder in a solid polymer and, as a dispersant, a C.sub.8 -C.sub.15 alkyl capped oligomer of a hexanoic acid that is electrochemically inert at 2.5-4.5 volts.