Patents by Inventor Stephen Mark Andrews

Stephen Mark Andrews 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: 20240352229
    Abstract: The present invention relates to a flame-retardant article comprising a polyolefin substrate having additives incorporated therein, the additives comprising: a specific phosphonate ester of formula (1), a synergist comprising an N-alkoxy hindered amine, and a melamine cyanurate. The present invention also relates to corresponding flame retardant compositions, and the use of these for improving the flame retardency of polyolefins.
    Type: Application
    Filed: May 30, 2024
    Publication date: October 24, 2024
    Inventors: Gerard LIPS, Daniel MUELLER, Thomas Friend THOMPSON, Stephen Mark ANDREWS
  • Publication number: 20240294750
    Abstract: Polycarbonate compositions comprising one or more additives selected from the group consisting of benzofuranone stabilizers of formula I, wherein R1, R2, R3, R4 and R5 are each independently hydrogen, halogen, hydroxy, C1-C25alkyl, C2-C25alkenyl, C2-C25alkynyl, C7-C9phenylalkyl, phenyl, C5-C8cycloalkyl, C1-C5galkoxy, C1-C8alkylamine, di(C1-C8alkyl)amino, C1-C25alkanoyloxy, C1-C25alkanoylamino, C3-C25alkenoyloxy, C3-C25alkanoyloxy interrupted by one to three —O—, —S—, —NH— or —N(C1-C8alkyl)-, wherein C1-C25alkyl, C2-C25alkenyl, C2-C25alkynyl, C7-C9phenylalkyl, phenyl, C5-C5cycloalkyl, C1-C15alkoxy, C1-C5alkylamine, di(C1-C8alkyl)amino, C1-C25alkanoyloxy, C1-C25alkanoylamino, C3-C25alkenoyloxy and interrupted C3-C25alkenoyloxy are unsubstituted or substituted by one to three groups selected from halogen, hydroxy, thiol, amino, C1-C4alkylamino, di(C1-C4alkyl)amino and C1-C4alkyl.
    Type: Application
    Filed: April 26, 2024
    Publication date: September 5, 2024
    Applicant: BASF SE
    Inventors: Stephen Mark Andrews, Markus Grob
  • Patent number: 12012542
    Abstract: Polyolefin hollow articles prepared via a rotomolding process are provided flame retardancy by incorporating therein a phosphonate ester, an N-alkoxy hindered amine and melamine cyanurate.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: June 18, 2024
    Assignee: BASF SE
    Inventors: John A. Sigler, Thomas F. Thompson, Stephen Mark Andrews
  • Publication number: 20210087471
    Abstract: Polyolefin hollow articles prepared via a rotomolding process are provided flame retardancy by incorporating therein a phosphonate ester, an N-alkoxy hindered amine and melamine cyanurate.
    Type: Application
    Filed: February 20, 2019
    Publication date: March 25, 2021
    Inventors: John A. Sigler, Thomas F. Thompson, Stephen Mark Andrews
  • Publication number: 20200385570
    Abstract: Polycarbonate compositions comprising one or more additives selected from the group consisting of benzofuranone stabilizers of formula I, wherein R1, R2, R3, R4 and R5 are each independently hydrogen, halogen, hydroxy, C1-C25alkyl, C2-C25alkenyl, C2-C25alkynyl, C7-C9phenylalkyl, phenyl, C5-C8cycloalkyl, C1-C18alkoxy, C1-C8alkylamine, di(C1-C8alkyl)amino, C1-C25alkanoyloxy, C1-C25alkanoylamino, C3-C25alkenoyloxy, C3-C25alkanoyloxy interrupted by one to three —O—, —S—, —NH— or —N(C1-C8alkyl)-, wherein C1-C25alkyl, C2-C25alkenyl, C2-C25alkynyl, C7-C9phenylalkyl, phenyl, C5-C8cycloalkyl, C1-C18alkoxy, C1-C8alkylamine, di(C1-C8alkyl)amino, C1-C25alkanoyloxy, C1-C25alkanoylamino, C3-C25alkenoyloxy and interrupted C3-C25alkenoyloxy are unsubstituted or substituted by one to three groups selected from halogen, hydroxy, thiol, amino, C1-C4alkylamino, di(C1-C4alkyl)amino and C1-C4alkyl.
    Type: Application
    Filed: March 22, 2018
    Publication date: December 10, 2020
    Inventors: Stephen Mark Andrews, Markus Grob
  • Patent number: 10669403
    Abstract: A polyolefin composition includes a polyolefin substrate having incorporated therein a nucleating agent and a filler, wherein the composition exhibits an impact strength of >35 in-lb measured according to ASTM D4226, and a coefficient of linear thermal expansion of <4.5×10E-05 in/in/ft measured according to ASTM D696. The polyolefin composition may further include one or more of an ultraviolet light absorber, a hindered amine light stabilizer, an antioxidant, a colorant, a flame retardant, and an antimicrobial compound. The polyolefin compositions may be useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: June 2, 2020
    Assignee: BASF SE
    Inventors: Stephen Mark Andrews, Joseph James Fay, Roswell Easton King, Mohammad Zafar, Zhisheng Chen, Thomas Friend Thompson, Feng Zuo
  • Patent number: 10428204
    Abstract: Polyolefin compositions useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing. The compositions comprise a polyolefin substrate which has incorporated therein one or more additives selected from the group consisting of a) one or more ultraviolet light absorbers, b) one or more hindered amine light stabilizers and c) one or more antioxidants. Advantageously, the polyolefin substrate also has incorporated therein d) one or more colorants, e) one or more fillers, f) one or more flame retardants and optionally g) one or more antimicrobial compounds. The compositions exhibit certain performance levels according to standard tests, for example impact strength of >35 in-lb per ASTM D4226, coefficient of linear thermal expansion of <4.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: October 1, 2019
    Assignee: BASF SE
    Inventors: Stephen Mark Andrews, Joseph James Fay, Roswell Easton King, Mohammad Zafar, Zhisheng Chen, Thomas Friend Thompson, Feng Zuo
  • Publication number: 20190010308
    Abstract: A flame-retardant article including a polyolefin substrate having incorporated additives. The additives include: a specific phosphonate ester, a synergist including an N-alkoxy hindered amine, and a melamine cyanurate. Flame retardant compositions, and use of the compositions for improving the flame retardancy of polyolefins, also are disclosed.
    Type: Application
    Filed: July 15, 2016
    Publication date: January 10, 2019
    Inventors: Gerard Lips, Daniel MUELLER, Thomas Friend THOMPSON, Stephen Mark ANDREWS
  • Publication number: 20180201838
    Abstract: Disclosed in certain embodiments are non-halogenated flame-retardant polyolefin articles. The articles include polyolefin substrates having additives contained therein.
    Type: Application
    Filed: July 20, 2016
    Publication date: July 19, 2018
    Inventors: Stephen Mark Andrews, Thomas Friend Thompson
  • Publication number: 20170137613
    Abstract: A polyolefin composition includes a polyolefin substrate having incorporated therein a nucleating agent and a filler, wherein the composition exhibits an impact strength of >35 in-lb measured according to ASTM D4226, and a coefficient of linear thermal expansion of <4.5×10E-05 in/in/ft measured according to ASTM D696. The polyolefin composition may further include one or more of an ultraviolet light absorber, a hindered amine light stabilizer, an antioxidant, a colorant, a flame retardant, and an antimicrobial compound. The polyolefin compositions may be useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Inventors: Stephen Mark Andrews, Joseph James Fay, Roswell Easton King, Mohammad Zafar, Zhisheng Chen, Thomas Friend Thompson, Feng Zuo
  • Publication number: 20160244591
    Abstract: Polyolefin compositions useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing. The compositions comprise a polyolefin substrate which has incorporated therein one or more additives selected from the group consisting of a) one or more ultraviolet light absorbers, b) one or more hindered amine light stabilizers and c) one or more antioxidants. Advantageously, the polyolefin substrate also has incorporated therein d) one or more colorants, e) one or more fillers, f) one or more flame retardants and optionally g) one or more antimicrobial compounds. The compositions exhibit certain performance levels according to standard tests, for example impact strength of >35 in-lb per ASTM D4226, coefficient of linear thermal expansion of <4.
    Type: Application
    Filed: September 24, 2014
    Publication date: August 25, 2016
    Inventors: Stephen Mark Andrews, Joseph James Fay, Roswell Easton King, Mohammad Zafar, Zhisheng Chen, Thomas Friend Thompson, Feng Zuo
  • Patent number: 7514526
    Abstract: The present invention discloses a process for the preparation of a stabilized polyester that is low in the generation of aldehydes which comprises reacting one or more diacids with one or more diols in an esterification process, and/or one or more diesters with one or more diols in a transesterification process in the presence of an effective amount of a stabilizer selected from the group consisting of (a) a polyhydric alcohol which is for example poly(ethylene-co-vinyl alcohol), poly(styrene-co-allyl alcohol), maltitol, isomalt, sorbitol, xylitol, sucrose, mucic acid dibutylester, mucic acid di(phenyl-1-ethyl)ester, pentaerythritol or dipentaerythritol; (b) a compound of the formula II which is for example di-iso-octyl-phosphinic acid; (c) a sterically hindered amine which is for example Tinuvin 123 or Tinuvin 622; (d) a polyacrylamide, an anionic acrylic polymer or a cationic acrylamide copolymer; or (e) a hydroxylamine and/or a nitrone.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: April 7, 2009
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Dirk Simon, Dario Lazzari, Stephen Mark Andrews, Heinz Herbst
  • Patent number: 7288583
    Abstract: The contents of clear or lightly colored plastic containers or films are protected from ultraviolet radiation by the incorporation of certain UV absorbers of the class of durable benzotriazoles and tris-aryl-s-triazines in the container or film. Contents to be protected include foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: October 30, 2007
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Stephen Mark Andrews, Joseph Suhadolnik, Mervin Gale Wood
  • Patent number: 7214742
    Abstract: Compounds of the general formula I? in which R1 is H, C1–C12alkyl; C5–C12cycloalkyl; C2–C18alkyl which is interrupted by one or more O; SR4; OR5; or is a group of formula II or III R2, R21 and R3 independently of one another, are H or —Y—T as defined in claim 1, where T is a reactive group selected from OH, acryl- and methacryloxy and arylcarbonate groups, and further symbols are as defined in claim 1, are effective as crosslinking agents for polymeric networks, especially as in flexographic printing plates, coatings, and plastic containers or films. Further provided is a method of protecting the content of a clear or lightly colored plastic container or film against the deleterious effects of ultraviolet radiation, which method comprises permanently and covalently bonding one or more UV absorbing moieties of a durable s-triazine UV absorber via condensation to a suitable polymer component.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: May 8, 2007
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Thomas Bolle, Andreas Valet, David George Leppard, Stephen Mark Andrews, Ramanathan Ravichandran, Markus Grob, Dirk Simon
  • Patent number: 7205379
    Abstract: The present invention discloses a process for the preparation of a stabilized polyester that is low in the generation of aldehydes which comprises reacting one or more diacids with one or more diols in an esterification process, and/or one or more diesters with one or more diols in a transesterification process in the presence of an effective amount of a stabilizer selected from the group consisting of (a) a polyhydric alcohol which is for example poly(ethylene-co-vinyl alcohol), poly(styrene-co-allyl alcohol), maltitol, isomalt, sorbitol, xylitol, sucrose, mucic acid dibutylester, mucic acid di(phenyl-1-ethyl)ester, pentaerythritol or dipentaerythritol; (b) a compound of the formula II, which is for example di-iso-octyl-phosphinic acid; (c) a sterically hindered amine which is for example Tinuvin 123 or Tinuvin 622; (d) a polyacrylamide or a cationic acrylamide copolymer; or (e) a hydroxyamine and/or a nitrone.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: April 17, 2007
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Dirk Simon, Dari Lazzari, Stephen Mark Andrews, Heinz Herbst
  • Patent number: 7157586
    Abstract: Benzotriazole UV absorbers substituted with a ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega-OH or an omega-OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: January 2, 2007
    Assignee: Ciba Specialty Chemcials Corporation
    Inventors: Mervin Wood, Ramanathan Ravichandran, Douglas Wayne Horsey, Anunay Gupta, Deborah DeHessa, Luther A. R. Hall, Andrea Smith, Stephen Mark Andrews
  • Patent number: 7138457
    Abstract: A mixture of a polyester, such as poly(ethylene terephthalate) PET, and a suitable stabilizer selected from the group consisting of polyhydric alcohol-containing polymers and copolymers derived from 2-propenoic acid ester monomers, when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when similarly treated. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, beverages and most especially water.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: November 21, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paul Angelo Odorisio, Stephen Mark Andrews
  • Patent number: 7109259
    Abstract: A compound of the formula (I) wherein n is preferably 3; G1, G2, G3 and G4 are independently of one another e.g. C1–C4alkyl; A1 is e.g. hydrogen or methyl; A2 is e.g. methylene; A3? and A3? are e.g. C1–C4alkyl; A4 is e.g. C1–C8alkyl; Y is e.g. a group of the formula (IV) ?wherein R1 is e.g. hydrogen or methyl, R2 is e.g. methylene, R3? and R3? are e.g. C1–C4alkyl and R4 is e.g. hydrogen or C1–C8alkyl; and Z is e.g. a group of the formula (VI) ?with A10? and A10? being independently of one another e.g. hydrogen or C1–C4alkyl and A11? and A11? being independently of one another e.g. C2–C6alkylene, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: September 19, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Dario Lazzari, Mirko Rossi, Graziano Zagnoni, Alessandro Zedda, Stephen Mark Andrews
  • Patent number: 6916881
    Abstract: A mixture of a polyester, such as poly(ethylene terephthalate) PET, and a second polymer which is polyacrylamide, polymethacrylamide or copolymer of acrylamide or methacrylamide when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when similarly treated. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, beverages and most especially water.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: July 12, 2005
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Stephen Mark Andrews, James J. Usilton
  • Patent number: 6800678
    Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cycloalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: October 5, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Jr., Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan