Patents by Inventor John M Maher
John M Maher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8178159Abstract: Silane compositions having an aromatic functionality and a ethylenically functionality and comprising a latent acid catalyst are deposited in two or more layers on a substrate. Each layer differs in light absorption properties from an adjacent layer. Some layers may have different curing mechanisms. Such a method is useful in forming antireflective coatings.Type: GrantFiled: March 31, 2004Date of Patent: May 15, 2012Inventors: Kiran K. Baikerikar, Shaoguang Feng, Jack E. Hetzner, John M. Maher, Michael E. Mills, Paul J. Popa, Richard J. Strittmatter, Larry R. Wilson
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Patent number: 7906688Abstract: A calixarene bisphosphite composition for use as a ligand in a transition metal-ligand complex catalyst and in a complex catalyst precursor. The ligand is especially useful in catalysts and catalyst precursors for hydroformylation processes wherein a raffinate stream comprising a mixture of alpha, beta, and iso-olefinic isomers is hydroformylated in the presence of carbon monoxide, hydrogen, and the transition metal-ligand complex catalyst to form a mixture of linear and branched aldehyde products. The complex catalyst selectively converts the alpha and beta olefin reactants more rapidly than the iso-olefin reactant resulting in an improved molar ratio of normal (linear) to branched aldehyde products. The unconverted iso-olefinic isomer is thereafter readily separated from the aldehyde product mixture.Type: GrantFiled: April 3, 2008Date of Patent: March 15, 2011Inventors: Michael A. Brammer, Wei-Jun Peng, John M. Maher
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Publication number: 20100044628Abstract: A calixarene bisphosphite composition for use as a ligand in a transition metal-ligand complex catalyst and in a complex catalyst precursor. The ligand is especially useful in catalysts and catalyst precursors for hydroformylation processes wherein a raffinate stream comprising a mixture of alpha, beta, and iso-olefinic isomers is hydroformylated in the presence of carbon monoxide, hydrogen, and the transition metal-ligand complex catalyst to form a mixture of linear and branched aldehyde products. The complex catalyst selectively converts the alpha and beta olefin reactants more rapidly than the iso-olefin reactant resulting in an improved molar ratio of normal (linear) to branched aldehyde products. The unconverted iso-olefinic isomer is thereafter readily separated from the aldehyde product mixture.Type: ApplicationFiled: April 3, 2008Publication date: February 25, 2010Inventors: Michael A. Brammer, Wei-Jun Peng, John M. Maher
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Patent number: 6492548Abstract: Processes are disclosed for the oxidation of alkanes such as, for example, propane, to form unsaturated carboxylic aldehydes and acids such as, for example, acrolein and acrylic acid. The processes utilize oxygen and recycle alkanes, e.g. propane, to the aldehyde reactor. The presence of the alkane-to-aldehyde reaction can enhance the efficiency of the processes.Type: GrantFiled: September 20, 2000Date of Patent: December 10, 2002Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jonathan L Brockwell, Mark A Young, William G Etzkorn, Barbara K Warren, John M Maher
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Patent number: 6057481Abstract: Processes are disclosed for the conversion of propylene to methylmercaptopropanal by converting propylene to acrolein and converting acrolein to methylmercaptopropanal. The processes utilize oxygen and recycle propane to the acrolein reactor. Process feeds can comprise, propane, propylene or mixtures thereof. The presence of propane in the propylene-to-acrolein reaction can enhance the efficiency of the processes.Type: GrantFiled: October 1, 1998Date of Patent: May 2, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jonathan L Brockwell, Mark A Young, William G Etzkorn, Barbara K Warren, John M Maher
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Patent number: 5449653Abstract: A process for producing a 1,3-diol, e.g., 1,3-propanediol, and/or a 3-hydroxyaldehyde, e.g., 3-hydroxypropionaldehyde, is disclosed which comprises contacting a combination of an epoxide, carbon monoxide and hydrogen in the presence of a rhodium-containing.catalyst composition effective to promote the hydroformylation of the epoxide at conditions effective to form at least one of a 1,3-diol and a 3-hydroxyaldehyde. The rhodium-containing catalyst composition comprises an anionic rhodium-containing complex. A promoter component is preferably provided to enhance at least one of the rate and selectivity of the epoxide hydroformylation reaction. Rhodium-containing compositions and a processes for producing rhodium-containing compositions are also disclosed.Type: GrantFiled: February 5, 1993Date of Patent: September 12, 1995Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John R. Briggs, John M. Maher, Arnold M. Harrison
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Patent number: 5364950Abstract: This invention provides a process for stabilizing a phosphite ligand against degradation in a homogeneous reaction mixture containing a Group VIII transition metal catalyst and the phosphite ligand, said process comprising adding to the reaction mixture an epoxide in an amount from 0.001 to 5 weight percent based on the total weight of the reaction mixture to reduce the degradation of the ligand.Type: GrantFiled: September 29, 1992Date of Patent: November 15, 1994Assignee: Union Carbide Chimicals & Plastics Technology CorporationInventors: James E. Babin, John M. Maher, Ernst Billig
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Patent number: 5288918Abstract: An improved rhodium-organophosphite complex catalyzed hydroformylation process, the improvement comprising carrying out said process in the presence of a catalytic activity enhancing additive said additive being selected from the class consisting of added water, a weakly acidic compound, or both added water and a weakly acidic compound.Type: GrantFiled: September 29, 1992Date of Patent: February 22, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John M. Maher, James E. Babin, Ernst Billig, David R. Bryant, Tak W. Leung
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Catalysts for producing 1,3-diols and/or 3-hydroxyaldehydes, and processes for making and using same
Patent number: 5225387Abstract: A process for producing a 1,3-diol, e.g., 1,3-propanediol, or a 3-hydroxyaldehyde is disclosed which comprises contacting a combination of an epoxide, carbon monoxide and hydrogen in the present of a rhodium-containing catalyst effective to promote the hydroformylation of the epoxide at conditions effective to form at least one of a 1,3-diol and a 3-hydroxyaldehyde, the contacting occurring in the substantial absence of a promoting amount of alkali metal ions, and at least a portion of the rhodium-containing catalyst being formed substantially without incorporation of the epoxide. A process for producing such rhodium-containing compositions is also disclosed.Type: GrantFiled: April 25, 1991Date of Patent: July 6, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John R. Briggs, John M. Maher, Arnold M. Harrison -
Patent number: 5210318Abstract: A process for producing a 1,3-diol, e.g., 1,3-propanediol, and/or a 3-hydroxyaldehyde, e.g., 3-hydroxypropionaldehyde, is disclosed which comprises contacting a combination of an epoxide, carbon monoxide and hydrogen in the presence of a rhodium-containing catalyst composition effective to promote the hydroformylation of the epoxide at conditions effective to form at least one of a 1,3-diol and a 3-hydroxyaldehyde. The rhodium-containing catalyst composition comprises an anionic rhodium-containing complex. A promoter component is preferably provided to enhance at least one of the rate and selectivity of the epoxide hydroformylation reaction Rhodium-containing compositions and a processes for producing rhodium-containing compositions are also disclosed.Type: GrantFiled: March 18, 1991Date of Patent: May 11, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: John R. Briggs, John M. Maher, Arnold M. Harrison
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Catalysts for producing 1,3-diols and/or 3-hydroxyaldehydes, and processes for making and using same
Patent number: 5030766Abstract: A process for producing a 1,3-diol, e.g., 1,3-propanediol, or a 3-hydroxyaldehyde is disclosed which comprises contacting a combination of an epoxide, carbon monoxide and hydrogen in the present of a rhodium-containing catalyst effective to promote the hydroformylation of the epoxide at conditions effective to form at least one of a 1,3-diol and a 3-hydroxyaldehyde, the contacting occurring in the substantial absence of a promoting amount of alkali metal ions, and at least a portion of the rhodium-containing catalyst being formed substantially without incorporation of the epoxide. A process for producing such rhodium-containing compositions is also disclosed.Type: GrantFiled: May 4, 1990Date of Patent: July 9, 1991Assignee: Technology CorporationInventors: John R. Briggs, John M. Maher, Arnold M. Harrison -
Patent number: 4835299Abstract: A process for purifying tertiary organophosphites by removing secondary organophosphites therefrom.Type: GrantFiled: March 31, 1987Date of Patent: May 30, 1989Assignee: Union Carbide CorporationInventors: John M. Maher, Ernst Billig, David R. Bryant
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Patent number: 4789753Abstract: Transition metal-diorganophosphite complex catalyzed carbonylation processes, especially hydroformylation, as well as transition metal-diorganophosphite ligand complex compositions, diorganophosphite ligands and transition metal-diorganophosphite catalysts.Type: GrantFiled: October 13, 1987Date of Patent: December 6, 1988Assignee: Union Carbide CorporationInventors: Ernst Billig, Anthony G. Abatjoglou, David R. Bryant, Rex E. Murray, John M. Maher
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Patent number: 4774361Abstract: The use of an organic polymer additive to minimize or prevent the rhodium of a rhodiumorganophosphite complex catalyst from precipitating from solution during a liquid recycle hydroformylation process.Type: GrantFiled: May 11, 1987Date of Patent: September 27, 1988Assignee: Union Carbide CorporationInventors: John M. Maher, David R. Bryant
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Patent number: 4737588Abstract: Transition metal-diorganophosphite complex catalyzed carbonylation processes, especially hydroformylation, as well as transition metal-diorganophosphite ligand complex compositions, diorganophosphite ligands and transition metal-diorganophosphite catalysts.Type: GrantFiled: March 19, 1986Date of Patent: April 12, 1988Assignee: Union Carbide CorporationInventors: Ernst Billig, Anthony G. Abatjoglou, David R. Bryant, Rex E. Murray, John M. Maher
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Patent number: 4717775Abstract: Transition metal-diorganophosphite complex catalyzed carbonylation processes, especially hydroformylation, as well as transition metal-diorganophosphite ligand complex compositions, diorganophosphite ligands and transition metal-diorganophosphite catalysts.Type: GrantFiled: May 20, 1986Date of Patent: January 5, 1988Assignee: Union Carbide CorporationInventors: Ernst Billig, Anthony G. Abatjoglou, David R. Bryant, Rex E. Murray, John M. Maher