Patents by Inventor William R. Coutant
William R. Coutant 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).
-
Patent number: 7829646Abstract: The present invention is directed to PE-100 ethylene copolymers and pipe made thereof having a Tabor abrasion between about 0.01 and about 0.001 grams lost/1000 revolutions. These copolymers are formed by contacting ethylene with at least one mono-1-olefin comonomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. Additionally, the comonomers may be selected from mono-1-olefins having 4 to 10 carbon atoms, such as, 1-hexene, 1-butene, 4-methyl-1-pentene, 1-octene, and 1-decene. Further, these ethylene copolymers may be employed to produce PE-100 pipe having both small diameters and diameters in excess of 42 inches substantially without sagging or other gravitational deformation. Copolymers of ethylene and 1-hexene are disclosed which are used to produce PE-100 pipe.Type: GrantFiled: September 15, 2005Date of Patent: November 9, 2010Assignee: Chevron Phillips Chemical Company LPInventors: Paul J. DesLauriers, Max P. McDaniel, Al R. Wolfe, Pamela L. Maeger, William R. Coutant, David C. Rohlfing, Steven J. Secora, William B. Beaulieu, Elizabeth A. Benham, David F. Register
-
Patent number: 7157511Abstract: The whiteness and stability after processing of a polyolefin have been found to be improved upon the addition of a combination of at least one high activity phosphite and at least one hydrolytically stable phosphite.Type: GrantFiled: November 21, 2003Date of Patent: January 2, 2007Inventors: Rex L. Bobsein, Bryan E. Hauger, William R. Coutant, John Rathman
-
Patent number: 7135511Abstract: The whiteness and stability of a polyolefin have been found to be improved upon addition of a first phosphite, an arylalkyl diphosphite, and a second phosphite selected from a second arylalkyl disphosphite or a triarylphosphite. In addition, the addition of a triarylphosphite with an arylalkyl disphoshite has been found to improve the hygroscopic nature and the hydrolytic stability of the arylalkyl disphosphite.Type: GrantFiled: December 17, 2002Date of Patent: November 14, 2006Assignee: Chevron Phillips Chemical Company, L.P.Inventors: David R. Battiste, Mark K. Russell, William R. Coutant, Joseph R. Harder
-
Patent number: 6867278Abstract: The present invention is directed to homo-polymers and copolymers of mono-1-olefins, a method of making such polymers,and uses of such polymers. Polymers of the present invention are formed by contacting at least one mono-1-olefin having from 2 to about 20 carbon atoms per molecule and at least one mono-1-olefin co-monomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. In another aspect of the present invention, ethylene copolymers are employed to produce PE-100 pipe. Further, these ethylene copolymers may be employed to produce PE-100 pipe having both small diameters and diameters in excess of 42 inches substantially without sagging or other gravitational deformation. Copolymers of ethylene and 1-hexene are disclosed which are used to produce PE-100 pipe.Type: GrantFiled: February 24, 2003Date of Patent: March 15, 2005Assignee: Chevron Phillips Chemical CompanyInventors: Max P. McDaniel, Elizabeth A. Benham, Al R. Wolfe, Paul J. DesLauriers, Pamela L. Meager, William R. Coutant, David C. Rohlfing, Steven J. Secora
-
Publication number: 20030199648Abstract: The present invention is directed to homo-polymers and copolymers of mono-1-olefins, a method of making such polymers, and uses of such polymers. Polymers of the present invention are formed by contacting at least one mono-1-olefin having from 2 to about 20 carbon atoms per molecule and at least one mono-1-olefin co-monomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. The catalyst system of the present invention comprises a chromium source on an aluminophosphate support which has a phosphorous to aluminum mole ratio of less than about 0.3. Further, the catalyst system is treated with less than about 7 weight percent fluoride based on the weight of the support and is calcined. Cocatalyst are selected from trialkylboron compounds, triarylboron compounds, alkylaluminum compounds, and combinations thereof.Type: ApplicationFiled: February 24, 2003Publication date: October 23, 2003Inventors: Max P. McDaniel, Elizabeth A. Benham, Al R. Wolfe, Paul J. DesLauriers, Pamela L. Meager, William R. Coutant, David C. Rohlfing, Steven J. Secora
-
Patent number: 6613823Abstract: The whiteness and stability of a polyolefin have been found to be improved upon addition of a first phosphite, an arylalkyl diphosphite, and a second phosphite selected from the group consisting of a second arylalkyl diphosphite and a triarylphosphite. In addition, the addition of a triarylphosphite with an arylalkyl diphosphite has as been found to improve the hygroscopic nature and the hydrolytic stability of the arylalkyl diphosphite.Type: GrantFiled: October 21, 1998Date of Patent: September 2, 2003Assignee: Phillips Petroleum CompanyInventors: David R. Battiste, Mark K. Russell, William R. Coutant, Joseph R. Harder
-
Publication number: 20030158306Abstract: The whiteness and stability of a polyolefin have been found to be improved upon addition of a first phosphite, an arylalkyl diphosphite, and a second phosphite selected from a second arylalkyl disphosphite or a triarylphosphite. In addition, the addition of a triarylphosphite with an arylalkyl disphoshite has been found to improve the hygroscopic nature and the hydrolytic stability of the arylalkyl disphosphite.Type: ApplicationFiled: December 17, 2002Publication date: August 21, 2003Inventors: David R. Battiste, Mark K. Russell, William R. Coutant, Joseph R. Harder
-
Patent number: 6355359Abstract: A self supporting film having one or more layers wherein at least one layer has a percent haze of less than 17.8 and the polymer of that layer consists essentially of a polyethylene having a density of at least 0.925 grams per cc, a molecular weight distribution of no more than 4, optionally containing a fluoroelastomer, and methods for making such film are disclosed.Type: GrantFiled: October 31, 2000Date of Patent: March 12, 2002Assignee: Phillips Petroleum CompanyInventors: Ashish M. Sukhadia, William R. Coutant, Jim D. Byers, Louis Moore, Jr., M. Bruce Welch, Syriac J. Palackal, Kiplin D. Cowan, David C. Rohlfing, Jay Janzen, Paul J. DesLauriers, William M. Whitte
-
Patent number: 6248840Abstract: A process comprising reacting at least one polymer component, with at least one reactive component, to produce a composition, the polymer being a metallocene polymerized ethylene (co)polymer, and the reactive component being a crosslinking agent.Type: GrantFiled: December 28, 1998Date of Patent: June 19, 2001Assignee: Phillips Petroleum CompanyInventors: Ashish M. Sukhadia, M. Bruce Welch, William M. Whitte, Syriac J. Palackal, William R. Coutant
-
Patent number: 6214469Abstract: A high clarity film containing three layers wherein the polymer of each outer layer is the same or different polyethylene selected from polyethylenes having a density of at least 0.925 g/cc, and a molecular weight distribution of less than 4, and being further characterized by being substantially free of branches having 6 or more carbon atoms, polyethylenes of the outer layers optionally containing a fluoroelastomer.Type: GrantFiled: January 15, 1998Date of Patent: April 10, 2001Assignee: Phillips Petroleum CompanyInventors: Ashish M. Sukhadia, David C. Rohlfing, Jay Janzen, Paul J. DesLauriers, Jim D. Byers, Louis Moore, Jr., M. Bruce Welch, Syriac J. Palackal, William M. Whitte, William R. Coutant, Kiplin D. Cowan
-
Patent number: 6174981Abstract: Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. Novel ethylene copolymers also are produced.Type: GrantFiled: December 17, 1998Date of Patent: January 16, 2001Assignee: Phillips Petroleum CompanyInventors: Joseph J. Bergmeister, Al R. Wolfe, Steven J. Secora, Elizabeth A. Benham, William R. Coutant, Max P. McDaniel
-
Patent number: 5654249Abstract: Chromium catalyst compositions are provided. These chromium catalyst compositions comprise at least two chromium catalyst systems that have a certain amount of chromium and a support that comprises silica and titania. the supports have certain pore volumes and surface areas. These catalyst compositions are useful for homopolymerizing ethylene or copolymerizing ethylene with a comonomer. The resins produced are useful in film applications.Type: GrantFiled: May 25, 1995Date of Patent: August 5, 1997Assignee: Phillips Petroleum CompanyInventors: Kent W. Rollmann, Elizabeth A. Benham, William M. Whitte, Max P. McDaniel, William R. Coutant, F. Wallace Bailey
-
Patent number: 5508362Abstract: Chromium catalyst compositions are provided. These chromium catalyst compositions comprise at least two chromium catalyst systems that have a certain amount of chromium and a support that comprises silica and titania. the supports have certain pore volumes and surface areas. These catalyst compositions are useful for homopolymerizing ethylene or copolymerizing ethylene with a comonomer. The resins produced are useful in film applications.Type: GrantFiled: October 8, 1993Date of Patent: April 16, 1996Assignee: Phillips Petroleum CompanyInventors: Kent W. Rollmann, Elizabeth A. Benham, William M. Whitte, Max P. McDaniel, William R. Coutant, F. Wallace Bailey
-
Patent number: 5405917Abstract: The molecular weight of solid polymers, particularly polyolefins, is modified by addition of organic peroxides (or other free radical generators), which is admixed in a first reaction zone. The polymer is then melted followed by addition of additives such as antioxidants and light stabilizers, which are admixed in a second reaction zone where intense and rapid mixing occurs, such as within the barrel of an extruder. The separate admixture of primary and secondary additives provides improved color and odor characteristics for the polymer compared to concurrent admixture of all the additives.Type: GrantFiled: October 26, 1993Date of Patent: April 11, 1995Assignee: Phillips Petroleum CompanyInventors: Francis X. Mueller, Jr., William R. Coutant
-
Patent number: 5380803Abstract: A composition of matter comprising: (a) 10 to 80 weight percent inclusive of a low molecular weight polyethylene resin having a density of at least 0.94 grams per cubic centimeter, a melt index greater than 25 grams per 10 minutes, and a heterogeneity index between 2 and 12 inclusive; and (b) 20 to 90 weight percent inclusive of a high molecular weight ethylene copolymer having a density less than 0.955 grams per cubic centimeter, a high load melt index between 2 and 10 grams per 10 minutes inclusive, and a heterogeneity index between 2 and 10 inclusive; wherein said composition of matter has a melt index greater than 0.05 grams per 10 minutes.Type: GrantFiled: April 16, 1993Date of Patent: January 10, 1995Assignee: Phillips Petroleum CompanyInventors: William R. Coutant, Joel L. Martin
-
Patent number: 5319029Abstract: A composition of matter comprising: (a) 5 to 40 weight percent inclusive of a low molecular weight ethylene resin made using a titanium catalyst system said resin having a density greater than 0.955 grams per cubic centimeter, a melt index greater than 25 grams per 10 minutes, and a heterogeneity index between 2 and 8 inclusive; and (b) 60 to 95 weight percent inclusive of a high molecular weight ethylene copolymer resin made using a chromium catalyst system said resin having a density of at least 0.93 grams per cubic centimeter, a high load melt index between 1.5 and 15 grams per 10 minutes, and a heterogeneity index between 6 and 100 inclusive; wherein said composition of matter has a melt index greater than 0.05 grams per 10 minutes.Type: GrantFiled: April 16, 1993Date of Patent: June 7, 1994Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, M. Bruce Welch, William R. Coutant, Max P. McDaniel
-
Patent number: 5306775Abstract: A composition of matter comprising: (a) 30 to 70 weight percent inclusive of a low molecular weight ethylene resin made using a chromium catalyst system said resin having a density of at least 0.955 grams per cubic centimeter, a melt index from 25 to 400 grams per 10 minutes, and a heterogeneity index between 2 and 35 inclusive; and (b) 30 to 70 weight percent inclusive of a high molecular weight ethylene copolymer resin made using a titanium catalyst system said resin having a density not greater than 0.955 grams per cubic centimeter, a high load melt index between 0.1 and 50 grams per 10 minutes inclusive, and a heterogeneity index between 2 and 10 inclusive; wherein said composition of matter has a melt index greater than 0.05 grams per 10 minutes.Type: GrantFiled: April 16, 1993Date of Patent: April 26, 1994Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, M. Bruce Welch, William R. Coutant, Max P. McDaniel
-
Patent number: 5296515Abstract: A method is provided for hydrovisbreaking hydrocarbon polymers, particularly those derived from scrap articles, in which a mixture of at least one hydrocarbon polymer and a solvent is contacted with hydrogen under conditions sufficient to hydrovisbreak the polymer. The solvent comprises a combined weight percentage of C.sub.n H.sub.2n-8 and C.sub.n H.sub.2n-10 hydrocarbons of at least about 10 weight percent, where n is an integer of at least 8 in C.sub.n H.sub.2n-8 and n is an integer of at least 10 in C.sub.n H.sub.2n-10. The hydrovisbroken polymer can be fed to a catalytic cracker for cracking to cracked products.Type: GrantFiled: June 3, 1992Date of Patent: March 22, 1994Assignee: Phillips Petroleum CompanyInventors: Marvin M. Johnson, Fernando C. Vidaurri, Jr., William R. Coutant, Kenneth S. Wheelock
-
Patent number: 5017661Abstract: Use of strong acidic materials, such as molecular sieves, reduces the level of t-butyl alcohol (TBA) produced during the visbreaking of polyolefins.Type: GrantFiled: February 12, 1990Date of Patent: May 21, 1991Assignee: Phillips Petroleum CompanyInventors: Lawrence M. Fodor, William R. Coutant