Patents by Inventor Brian A. Stern

Brian A. Stern 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: 9121442
    Abstract: A polymeric thrust bearing is provided for an ultra-high PV environment. The polymeric thrust bearing includes an annular bearing body having an inner perimeter and an outer perimeter, and a plurality of lubricant channels extending across the annular bearing body from the inner perimeter to the outer perimeter. The annular bearing body comprises a polymer composition comprising a polymer having typically a glass transition temperature of at least about 140° C., such as an aromatic polyimide or a poly(aryl ether ketone), and at least one friction and wear additive. The polymeric thrust bearing is configured to withstand a velocity and a pressure in a lubricated environment in which the product of the velocity and the pressure is about 1,100,000 psi-fpm (23540 kg/cm2×m/min) or more.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: September 1, 2015
    Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Brian A. Stern, Yuhong Wu, Stephen Estberg, Tanya Berfield
  • Publication number: 20150126663
    Abstract: A resin composition [composition (C)] comprising: from 40 to 95% by volume (% v) of at least one aromatic polyimide [polymer (PI)], from 0.1 to 15% by volume (% v) of at least one compound having the general formula AnXm [compound (AnXm)], wherein each A is independently selected from a group consisting of a metal atom (M) which is selected from the group consisting of Fe, Co, Ni, Cu, Zn, Mo, Ag, Cd, Sn, Pt, Au, Hg, Pb and Tl and a semimetal atom (SM) which is selected from the group consisting of As, Sb and Bi; wherein each X is independently selected from a group consisting of As, Sb, S, Se and Te; with the proviso that when A is As or Sb then X is different from A; and wherein n and m equal or different from each other, are independently 1, 2, 3 and 4, from 0.
    Type: Application
    Filed: May 16, 2013
    Publication date: May 7, 2015
    Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC.
    Inventors: Thomas Burkhart, Rolf Walter, Hans-Peter Feldner, Yuhong Wu, Geoffrey Scott Underwood, Brian A. Stern
  • Patent number: 9000087
    Abstract: Thermoplastic polymer mixture (M) comprising at least one poly(aryl ether ketone) (P1), at least one poly(arylene sulfide) (P2), and between 0 and 25 wt. % of the total weight of the thermoplastic mixture (M), of a thermoplastic polymer material (P3) consisting of (i) at least one poly(biphenyl ether sulfone) (P3a), and/or (ii) at least one poly(ether imide) (P3b), and/or at least one poly(ether imide sulfone) (P3c), wherein: the combined weight amount of the poly(aryl ether ketone) (P1) and the poly(arylene sulfide) (P2), based on the total weight of the polymer mixture (M), is of at least 30%, and the weight amount of the poly(aryl ether ketone) (P1), based on the combined weight of the poly(aryl ether ketone) (P1) and the poly(arylene sulfide) (P2), is of at most 90%.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: April 7, 2015
    Assignee: Solvay Advanced Polymers, L.L.C.
    Inventors: Mohammad Jamal El-Hibri, Edward Ryan, Brian A. Stern
  • Patent number: 8865281
    Abstract: Flexible pipe (fP) suitable for transporting hydrocarbons, said flexible pipe comprising at least one polymer layer (L) composed of a polymer composition (C) comprising at least one poly(aryl ether ketone) (P1), and at least one per(halo)fluoropolymer (P2). The poly(aryl ether ketone) (P1) and the per(halo)fluoropolymer (P2) are advantageously homogeneously distributed in the polymer composition (C). The polymer composition (C) is profitably prepared by a method comprising tumble blending the per(halo)fluoropolymer (P2) on one hand, and the poly(aryl ether ketone) (P1) or part of the poly(aryl ether ketone) (P1) on the other hand.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 21, 2014
    Assignee: Solvay Advanced Polymers, L.L.C.
    Inventors: Shari W. Axelrad, Mohammad Jamal El-Hibri, Brian A. Stern, Johan Billiet, Brian Alexander
  • Publication number: 20130334006
    Abstract: A polymeric thrust bearing is provided for an ultra-high PV environment. The polymeric thrust bearing includes an annular bearing body having an inner perimeter and an outer perimeter, and a plurality of lubricant channels extending across the annular bearing body from the inner perimeter to the outer perimeter. The annular bearing body comprises a polymer composition comprising a polymer having typically a glass transition temperature of at least about 140° C., such as an aromatic polyimide or a poly(aryl ether ketone), and at least one friction and wear additive. The polymeric thrust bearing is configured to withstand a velocity and a pressure in a lubricated environment in which the product of the velocity and the pressure is about 1,100,000 psi-fpm (23540 kg/cm2×m/min) or more.
    Type: Application
    Filed: November 10, 2011
    Publication date: December 19, 2013
    Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC
    Inventors: Brian A. Stern, Yuhong Wu, Stephen Estberg, Tanya Berfield
  • Patent number: 8008408
    Abstract: Aromatic polyimide composition and articles manufactured therefrom. This invention relates to an aromatic polyimide molding composition, comprising at least one aromatic polyimide (A) chosen from the group consisting of aromatic polyamide-imide, aromatic polyesterimides and aromatic polyimide free of any ester and amide group of specific type and typically from 0.5 to 30% wt of at least one fluoroelastomer (B), with respect to the total weight of (A) and (B), to a method for manufacturing the same, to a molding process of the same, and to the articles manufactured therefrom. Preferably, the component (A) of the composition is at least one aromatic polyamide-imide manufactured by a process including the polycondensation reaction between (i) at least one acid monomer chosen from trimellitic anhydride and trimellitic anhydride monoacid halides and (ii) at least one commoner chosen from the group consisting of 4,4?-diaminodiphenylmethane, 4,4?-diaminodiphenylether, m-phenylenediamine and mixtures therefrom.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: August 30, 2011
    Assignee: SOLVAY (Société Anonyme)
    Inventors: Gregory Warkoski, Philip Schild, Romano Empaynado, Brian A. Stern
  • Publication number: 20110168288
    Abstract: Flexible pipe (fP) suitable for transporting hydrocarbons, said flexible pipe comprising at least one polymer layer (L) composed of a polymer composition (C) comprising at least one poly(aryl ether ketone) (P1), and at least one per(halo)fluoropolymer (P2). The poly(aryl ether ketone) (P1) and the per(halo)fluoropolymer (P2) are advantageously homogeneously distributed in the polymer composition (C). The polymer composition (C) is profitably prepared by a method comprising tumble blending the per(halo)fluoropolymer (P2) on one hand, and the poly(aryl ether ketone) (P1) or part of the poly(aryl ether ketone) (P1) on the other hand.
    Type: Application
    Filed: September 18, 2009
    Publication date: July 14, 2011
    Applicant: SOLVAY ADVANCED POLYMERS, L.L.C.
    Inventors: Shari W. Axelrad, Mohammad Jamal El-Hibri, Brian A. Stern, Johan Billiet, Brian Alexander
  • Publication number: 20100144955
    Abstract: Thermoplastic polymer mixture (M) comprising at least one poly(aryl ether ketone) (P1), at least one poly(arylene sulfide) (P2), and between 0 and 25 wt. % of the total weight of the thermoplastic mixture (M), of a thermoplastic polymer material (P3) consisting of (i) at least one poly(biphenyl ether sulfone) (P3a), and/or (ii) at least one poly(ether imide) (P3b), and/or at least one poly(ether imide sulfone) (P3c), wherein: the combined weight amount of the poly(aryl ether ketone) (P1) and the poly(arylene sulfide) (P2), based on the total weight of the polymer mixture (M), is of at least 30%, and the weight amount of the poly(aryl ether ketone) (P1), based on the combined weight of the poly(aryl ether ketone) (P1) and the poly(arylene sulfide) (P2), is of at most 90%.
    Type: Application
    Filed: April 23, 2008
    Publication date: June 10, 2010
    Applicant: Solvay Advanced Polymers, L.L.C.
    Inventors: Mohammad Jamal El-Hibri, Edward Ryan, Brian A. Stern
  • Publication number: 20090281227
    Abstract: Polymer composition (C) comprising: at least one poly(aryl ether ketone) (P1), at least one poly(biphenyl ether sulfone) (P2), and at least one fibrous carbon nanofiller (N). Article or part of an article comprising the polymer composition (C).
    Type: Application
    Filed: June 29, 2007
    Publication date: November 12, 2009
    Applicant: SOLVAY ADVANCED POLYMERS, L.L.C.
    Inventors: Brian A. Stern, Mohammad Jamal El-Hibri, Daniel J. Ireland
  • Publication number: 20090162676
    Abstract: Article (A) comprising at least one metal component (M), said metal component (M) being overmolded with at least one polymer composition (C) comprising at least one high glass transition temperature sulfone polymer (P). Process for producing article (A), which comprises the step of applying polymer composition (C) to a surface of metal component (M).
    Type: Application
    Filed: September 30, 2005
    Publication date: June 25, 2009
    Applicant: SOLVAY ADVANCED POLYMERS, L.L.C.
    Inventors: Mohammad Jamal El-Hibri, Brian A. Stern
  • Publication number: 20090026128
    Abstract: Essentially at most two-dimensional shaped article (A) comprising at least one polymer composition (C) comprising at least one high glass transition temperature sulfone polymer (P). Methods of making it and uses thereof.
    Type: Application
    Filed: September 30, 2005
    Publication date: January 29, 2009
    Applicant: SOLVAY ADVANCED POLYMERS, L.L.C.
    Inventors: Geoffrey Scott Underwood, Brian A. Stern, Anthony Lippl, Shari Weinberg, Selvaraj Savariar, Mohammad Jamal El-Hibri
  • Publication number: 20080193702
    Abstract: Polymer composition comprising (1) at least one poly(aryletherdisulfone) [polymer (P)] of which more than 50 mole % of the recurring units are recurring units (R1): (1) wherein Ar and Q, equal or different, are divalent radicals comprising at least one aromatic ring, and (2) a combination (AC) of additives composed of at least one fibrous filler (A1), and at least one non fibrous surface modifier (A2) chosen from liquid surface modifiers and particulate surface modifiers. Shaped article comprising the polymer composition, wherein said shaped article is a sliding part suitable for being used in a friction and wear application. Method of manufacturing said shaped article which comprises solution processing, compression molding, machining and/or melt processing the polymer composition.
    Type: Application
    Filed: September 30, 2005
    Publication date: August 14, 2008
    Applicant: SOLVAY ADVANDED POLYMERS, L.L.C.
    Inventors: Glenn W. Cupta, Edward Ryan, Brian A. Stern
  • Patent number: 5216092
    Abstract: This invention relates to a blend comprising a first LCP polyester polymer consisting essentially of units (I), (II), (III), and (IV). ##STR1## having a melting point under about 420.degree. C., p is approximately equal to r+q, r is from about 0.05 to about 0.9, q is from about 0.95 to about 0.1 and s is from about 0.05 to about 9, and a second LCP polyester polymer comprising at least one moiety selected from the group consisting of hydroxybenzoic acid, hydroxynaphthalene carboxylic acid, dihydroxy naphthalene, naphthalene dicarboxylic acid, oxybisbenzoic acid and substituted hydroquinones wherein the said moiety or moieties comprise(s) at least about 5 mole percent of the units in said second LCP polyester.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: June 1, 1993
    Assignee: Amoco Corporation
    Inventors: Paul J. Huspeni, Brian A. Stern, Paul D. Frayer, Richard Layton, Markus Matzner
  • Patent number: 5216091
    Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (IV). ##STR1## and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention."The instant copolyesters display orientation in the molten state, good fiber ratings and high strength. Advantageously, the polymers of the present invention display a significant improvement in viscosity and moldability of the neat polymer. The polymers have excellent mechanical and surface properties including blister resistance, strength, toughness, and ability to vapor phase solder, and form strong fibers while still maintaining a high heat distortion temperature. They have melting points in the range of from about 250.degree. to about 360.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of up to 240.degree.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: June 1, 1993
    Assignee: Amoco Corporation
    Inventors: Brian A. Stern, Markus Matzner, Richard Layton, Paul J. Huspeni, Paul D. Frayer, James W. Cleary
  • Patent number: 5204417
    Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (IV). ##STR1##and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention."The instant copolyesters display orientation in the molten state, good fiber ratings and high strength. Advantageously, the polymers of the present invention display a significant improvement in viscosity and moldability of the neat polymer. The polymers have excellent mechanical and surface properties including blister resistance, strength, toughness, and ability to vapor phase solder, and form strong fibers while still maintaining a high heat distortion temperature. They have melting points in the range of from about 250.degree. to about 360.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of up to 240.degree.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: April 20, 1993
    Assignee: Amoco Corporation
    Inventors: Brian A. Stern, Markus Matzner, Richard Layton, Paul J. Huspeni, Paul D. Frayer, James W. Cleary
  • Patent number: 5147967
    Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (IV). ##STR1## and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention".The instant copolyesters display orientation in the molten state, good fiber ratings and high strength. Advantageously, the polymers of the present invention display a significant improvement in viscosity and moldability of the neat polymer. The polymers have excellent mechanical and surface properties including blister resistance, strength, toughness, and ability to vapor phase solder, and form strong fibers while still maintaining a high heat distortion temperature. They have melting points in the range of from about 250.degree. to about 360.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of up to 240.degree.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: September 15, 1992
    Assignee: Amoco Corporation
    Inventors: Brian A. Stern, Markus Matzner, Richard Layton, Paul J. Huspeni, Paul D. Frayer, James W. Cleary
  • Patent number: 5089594
    Abstract: Aromatic polyesters based on isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol are described. The five monomers ae used in well-specified proportions and yield polymers that display an excellent overall combination of mechanical and thermal properties. The subject copolyesters have melting points of at least about 260.degree. C.; their heat distortion temperatures are at least about 200.degree. C. they have fiber ratings of up to 3. The novel polymers can be melt-fabricated using standard injection molding, extrusion and melt-spinning techniques.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: February 18, 1992
    Assignee: Amoco Corporation
    Inventors: Brian A. Stern, Markus Matzner, Richard Layton
  • Patent number: 4994546
    Abstract: Process for preparing polyarylates comprising the steps of (a) prepolymerizing a diester of Bisphenol-A with at least one aromatic dicarboxylic acid to form a prepolymer having a melting point of at least about 200.degree. C. and being fluid at the polymerization temperature; followed by (b) polycondensing said prepolymer under agitation until it is substantially transformed into a powdery solid; maintaining said agitation to keep the powdery solid in a polydispersed solid state; and continuing the polymerization below the agglomeration temperature of the polymerizing solid, until the desired molecular weight is reached.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: February 19, 1991
    Assignee: Amoco Corporation
    Inventors: Brian A. Stern, Richard Layton