Patents by Inventor Robert L. Sherman, Jr.

Robert L. Sherman, Jr. 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).

  • Publication number: 20140127438
    Abstract: The disclosure relates to a high-density polyethylene (HDPE) composition with resistance to deterioration in the presence of chlorinated and non-chlorinated water at temperatures in the range of about 0° C. to about 100° C., due to a particular stabilizer system which is composed of a hindered phenol antioxidant, a phosphonite or phosphine antioxidant, and a natural or synthetic hydrotalcite. The stabilizer system is specifically tailored to protect the HDPE as well as other polyolefins against deterioration and degradation.
    Type: Application
    Filed: November 8, 2012
    Publication date: May 8, 2014
    Inventors: ROBERT L. SHERMAN, JR., Sebastian JOSEPH
  • Patent number: 8207248
    Abstract: Disclosed is a colored high density polyethylene composition. The composition comprises a high density polyethylene, phthalocyanine blue, and talc. The composition exhibits reduced warpage in molded articles compared to those which do not contain talc. The composition is useful for injection molding and many other applications where a blue color is needed and low warpage is desired.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: June 26, 2012
    Assignee: Equistar Chemicals, LP
    Inventors: Jeffrey C. Haley, Robert L. Sherman, Jr., Edward S. Vargas, Douglas D. Keller, Jeffrey J. Strebel
  • Patent number: 8207255
    Abstract: A polyethylene composition comprising 0.01% to 1% by weight of at least one platelet-shaped nano boehmite nucleator, wherein the platelet-shaped nano boehmite nucleator comprises at least 70% by weight of Al2O3 and has a crystallite size of at least 5 nm, and the polyethylene composition comprises a density greater than 0.94 g/cm3, a melt index (MI2) ranging from equal to or greater than 0.3 g/10 min. up to equal to or less than 3 g/10 min., and a peak crystallization temperature (Tc) value determined according to ASTM D 3418, with an annealing temperature of 160° C. and a cooling rate of 10° C./min., that corresponds to formula (I): Tc?(A*density)?73.5° C.??(I) where A is 200 cm3-° C./g, Tc is in units of ° C., and density is in units of g/cm3.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: June 26, 2012
    Assignee: Equistar Chemicals, LP
    Inventors: Jeffrey C. Haley, Robert L. Sherman, Jr.
  • Publication number: 20120053301
    Abstract: A polyethylene composition comprising 0.01% to 1% by weight of at least one platelet-shaped nano boehmite nucleator, wherein the platelet-shaped nano boehmite nucleator comprises at least 70% by weight of Al2O3 and has a crystallite size of at least 5 nm, and the polyethylene composition comprises a density greater than 0.94 g/cm3, a melt index (MI2) ranging from equal to or greater than 0.3 g/10 min. up to equal to or less than 3 g/10 min., and a peak crystallization temperature (Tc) value determined according to ASTM D 3418, with an annealing temperature of 160° C. and a cooling rate of 10° C./min., that corresponds to formula (I): Tc?(A*density)?73.5° C.??(I) where A is 200 cm3-° C./g, Tc is in units of ° C., and density is in units of g/cm3.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 1, 2012
    Inventors: Jeffrey C. Haley, Robert L. Sherman, JR.
  • Patent number: 8114493
    Abstract: Disclosed is a pipe resin composition. The composition comprises a polyethylene pipe resin, a primary antioxidant, and an acid. The composition of the invention has an increased oxidative induction time (OIT) and environmental stress cracking resistance (ESCR).
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: February 14, 2012
    Assignee: Equistar Chemicals, LP
    Inventors: Robert L. Sherman, Jr., Sebastian Joseph, Charles S. Holland, Mick C. Hundley
  • Publication number: 20110201738
    Abstract: Disclosed is a polyolefin nanocomposite. The nanocomposite comprises a polyolefin, a quaternary ammonium modified nanoclay, and a Bronsted acid. The polyolefin nanocomposite can have reduced color compared with those which contain polyolefin and quaternary ammonium modified clay but does not contain Bronsted acid. It is useful for making films, pipes, geomembranes, containers, automotive parts, and wire and cable insulations and jackets.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 18, 2011
    Inventor: Robert L. Sherman, JR.
  • Publication number: 20110201729
    Abstract: Disclosed is a colored high density polyethylene composition. The composition comprises a high density polyethylene, phthalocyanine blue, and talc. The composition exhibits reduced warpage in molded articles compared to those which do not contain talc. The composition is useful for injection molding and many other applications where a blue color is needed and low warpage is desired.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 18, 2011
    Inventors: Jeffrey C. Haley, Robert L. Sherman, JR., Edward S. Vargas, Douglas D. Keller, Jeffrey J. Strebel
  • Publication number: 20110105675
    Abstract: Disclosed is an adhesive composition. The adhesive composition comprises a polyolefin, a maleated polyolefin, a Bronsted acid, and an antioxidant. The adhesive composition has improved oxidative stability compared with those which do not contain Bronsted acids.
    Type: Application
    Filed: November 4, 2009
    Publication date: May 5, 2011
    Inventors: Maged G. Botros, Robert L. Sherman, JR., Charles S. Holland
  • Patent number: 7932323
    Abstract: Disclosed is an adhesive composition. The adhesive composition comprises a polyolefin, a maleated polyolefin, a Bronsted acid, and an antioxidant. The adhesive composition has improved oxidative stability compared with those which do not contain Bronsted acids.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: April 26, 2011
    Assignee: Equistar Chemicals, LP
    Inventors: Maged G. Botros, Robert L. Sherman, Jr., Charles S. Holland
  • Publication number: 20100272937
    Abstract: Disclosed is a pipe resin composition. The composition comprises a polyethylene pipe resin, a primary antioxidant, and an acid. The composition of the invention has an increased oxidative induction time (OIT) and environmental stress cracking resistance (ESCR).
    Type: Application
    Filed: April 28, 2009
    Publication date: October 28, 2010
    Inventors: Robert L. Sherman, JR., Sebastian Joseph, Charles S. Holland, Mick C. Hundley
  • Publication number: 20100221561
    Abstract: Disclosed is a pipe resin composition. The composition comprises a polyethylene pipe resin, a primary antioxidant, and an acid. The composition of the invention has an increased oxidative induction time (OIT) and environmental stress cracking resistance (ESCR).
    Type: Application
    Filed: February 27, 2009
    Publication date: September 2, 2010
    Inventors: Robert L. Sherman, JR., Charles S. Holland, Mick C. Hundley, Sebastian Joseph
  • Patent number: 7632900
    Abstract: A lubricating oil suitable for use in ?-olefin compressors and a high-pressure ethylene polymerization process is disclosed. The oil comprises a base fluid and a hindered C6-C30 alkyl 4-hydroxybenzoate. The hindered C6-C30 alkyl 4-hydroxybenzoate stabilizes the lubricating oil and does not interfere with the high-pressure ?-olefin polymerization.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: December 15, 2009
    Assignee: Equistar Chemicals, LP
    Inventors: Stephen M. Imfeld, Robert L. Sherman, Jr., Andrew W. Lake