1
William R Coutant, Joel L Martin: Polyethylene blends. Phillips Petroleum Company, Carl D Corvin, January 10, 1995: US05380803 (37 worldwide citation)

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 ...


2
Joel L Martin, M Bruce Welch, William R Coutant, Max P McDaniel: Polyethylene blends. Phillips Petroleum Company, Carl D Corvin, April 26, 1994: US05306775 (35 worldwide citation)

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 ind ...


3
Joseph J Bergmeister, Al R Wolfe, Steven J Secora, Elizabeth A Benham, William R Coutant, Max P McDaniel: Polymerization process. Phillips Petroleum Company, Lynda S Jolly, January 16, 2001: US06174981 (35 worldwide citation)

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 ...


4
Joel L Martin, M Bruce Welch, William R Coutant, Max P McDaniel: Polyethylene blends. Phillips Petroleum Company, Carl D Corvin, June 7, 1994: US05319029 (29 worldwide citation)

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 in ...


5
David R Battiste, Mark K Russell, William R Coutant, Joseph R Harder: Phosphite additives in polyolefins. Phillips Petroleum Company, Kilpatrick Stockton, September 2, 2003: US06613823 (23 worldwide citation)

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 ...


6
Francis X Mueller Jr, William R Coutant: Selective admixture of additives for modifying a polymer. Phillips Petroleum Company, George E Bogatie, April 11, 1995: US05405917 (16 worldwide citation)

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 ...


7
Max P McDaniel, Elizabeth A Benham, Al R Wolfe, Paul J DesLauriers, Pamela L Meager, William R Coutant, David C Rohlfing, Steven J Secora: Olefin polymers, method of making, and use thereof. Chevron Phillips Chemical Company, Womble Carlyle Sandridge & Rice PLLC, March 15, 2005: US06867278 (15 worldwide citation)

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 ...


8
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: Olefin polymers, method of making, and use thereof. Chevron Phillips Chemical Company, Conley Rose P C, Rodney B Carroll, Cheryl L Huseman, November 9, 2010: US07829646 (13 worldwide citation)

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 ...


9
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: Films comprising metallocene catalyzed polyethylene. Phillips Petroleum Company, Edward L Bowman, April 10, 2001: US06214469 (13 worldwide citation)

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 fr ...


10
Rex L Bobsein, Bryan E Hauger, William R Coutant, John Rathman: Phosphite additives in polyolefins. January 2, 2007: US07157511 (10 worldwide citation)

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.