Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-11-22
2005-11-22
Seidleck, James J. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S332700, C525S332900, C526S220000, C526S204000, C526S329100, C526S329200
Reexamination Certificate
active
06967228
ABSTRACT:
A functional polymer having at least one substituent capable of forming a stable free radical is formed by polymerizing a diene monomer, such as butadiene, to form a first polymer block of the functional polymer. The first polymer block has a weight average molecular weight of less than 150,000. A vinyl aromatic monomer, such as styrene, is polymerized to form at least a second polymer block of the functional polymer. The copolymer is contacted with a stable free radical providing compound to form the functional polymer. By adding sufficient vinyl aromatic monomer, a low molecular weight functional rubber polymer can be rendered processable at ambient temperatures, while maintaining a solution viscosity which is suited to subsequent free radical catalyzation of vinyl aromatic monomers.
REFERENCES:
patent: 5322912 (1994-06-01), Georges et al.
patent: 5401804 (1995-03-01), Georges et al.
patent: 5549998 (1996-08-01), Georges et al.
patent: 5721320 (1998-02-01), Priddy et al.
patent: 6111025 (2000-08-01), Visger et al.
patent: 6255402 (2001-07-01), Boutillier et al.
patent: 6271308 (2001-08-01), de Boer et al.
patent: 6353065 (2002-03-01), Charleux et al.
patent: 6369162 (2002-04-01), Visger et al.
patent: 6420502 (2002-07-01), Chung
patent: 6444754 (2002-09-01), Chin et al.
patent: 6521710 (2003-02-01), Roth et al.
patent: 6525140 (2003-02-01), Dedecker
patent: 6525151 (2003-02-01), Roth et al.
patent: 2003/0050411 (2003-03-01), Gaynor et al.
patent: 2002/0045685 (2003-04-01), Ogoe et al.
patent: 2003/0065097 (2003-04-01), DeGroot et al.
patent: 2 768 738 (1999-03-01), None
patent: WO 97/36894 (1997-10-01), None
patent: WO 97/49741 (1997-12-01), None
patent: WO 97/49742 (1997-12-01), None
patent: WO 99/46261 (1999-09-01), None
patent: WO 02/048109 (2002-06-01), None
Priddy, et al., “Utility/Limitations of Nitroxide Mediated Polymerization for Low Cost Manufacture of Improved Styrenic Polymers”, Polymer Preprints (2002, 43(2), 102-103).
Xu, et al., “Boroxyl-Based Living Free Radical Initiators”, Polymer Preprints (2002, 43(2, 82-83).
Goplan, et al., “Synthesis of Rod-Coil Diblock Copolymers Via Nitroxide Functionalized Mesogenic Rod Segments”, Polymer Preprints (2002, 43(2), 110-111).
Nuyken, et al., “New Concepts for Controlled Radical Polymerization: The DPE-System”, Polymer Preprints (2002, 43(2) 84-85).
Cameron, et al., “Butyl Acrylate Polymerization Mediated by a Proxyl Nitroxide”, Polymer Preprints (2002, 43(2), 88-89).
Georges, et al., “Stable Free Radical Polymerization Process—Initiation Mechanisms With Benzoyl Peroxide and Various Nitroxides”, Polymer Preprints (2002, 43(2), 78-79).
Kobatake, et al., “Block Copolymer Synthesis by Styrene Polymerization Initiated with Nitroxy-Functionalized Polybutadiene”, Macromolecules, vol. 31, No. 11, pp. 3735-3739. 1997.
“Nitroxyl Based Controlled Free Radical Polymerization—An Additives Manufacturer's Approach”, Pfaendner, et al. Presentation at Commercialization of Controlled Polymer Synthesis, San Francisco, Sep. 16-17, 1999.
“Synthesis of Rod-Coil Diblock Copolymers via Nitroxide Functionalized Mesogenic Rod Segments” by Padma Gopalan, Xuefa Li, Christopher K. Ober and Craig Hawker, Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14852,Polymer Preprints2002, 43 (2), 110.
“Butyl Acrylate Polymerization Mediated by a Proxyl Nitroxide”by Neil R. Cameron and Alistair J. Reid, Department of Chemistry, University of Durham, South Road, Durham, DH1 3LE, U.K.,Polymer Preprints2002, 43 (2), 88.
“Stable Free Radical Polymerization Process—Initiation Mechanisms with Benzoyl Peroxide and Various Nitroxides” by Michael K. Georges, Gordon Hamer, Andrea R. Szkurhan, Argang Kazemedah, Joanne Li, Department of Chemistry, University of Toronto, 359 Mississauga Rd. N., Mississauga, On. L5L 1C6,Polymer Preprints2002, 43 (2), 78.
“New Concepts for Controlled Radical Polymerization: The DPE-System” by Oskar Nuyken, Philipp C. Weiland, Yvonne Heischkel and Benedikt Raether, Lehrstuhl für Makromoleculare Stoffe, TU Munchen, D-85747 Garching, Germany,Polymer Preprints2002, 43(2), 84.
“Utility/Limitations of Nitroxide Mediated Polymerization for Low Cost Manufacture of Improved Styrenic Polymers” by Duane B. Priddy and Bob A. Howell, Center for Applications in Polymer Science, Central Michigan University, Mt. Pleasant, MI 48859-0001,Polymer Preprints2002, 43 (2), 102.
“Boroxyl-Based Living Free Radical Initiators” by H. Han, G. Xu, and T. C. Chung, Dept. of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16082,Polymer Preprints2002, 43 (2), 82.
An article entitled “Nitroxyl Based Controlled Free Radical Polymerization- An Additives Manufacturer's Approach,” presentation at “Commercialization of Controlled Polymer Synthesis,” San Francisco, Sep. 16-17, 1999 by Rudolf Pfaendner, Wiebke Wunderlich, Michael Roth of Ciba Spezialitatenchemie Lampertheim GmbH, Lampertheim, Germany; Andreas Kramer, Francesco Fuso, Peter Nesvadba of Ciba Specialty Chemicals, Inc. Basel, Switzerland.
An article entitled: “Block Copolymer Synthesis by Styrene Polymerization Initiated with Nitroxy-Functionalized Polybutadiene” by Seiya Kobatake, H. James Harwood and Roderic P. Quirk, Maurice Morton Institute of Polymer Science, The University of Akron, Akron, OH 44325-3909, Duane B. Priddy, Polystyrene R&D, The Dow Chemical Co., Midland, MI 48667;Macromoleculespreprinted from vol. 31, No. 11, pp. 3735-373, 1998.
An article entitled: “Compatilization of poly(phenylene ether) and polyamide-6,6 blends by functionalized polystyrenes,” by Chin, Hui H. Annual Technical Conference—SPE (2002) 60th(Vo 2) 1329-1333, Abstract only.
An article entitled: “Compatibilization of poly(phenylene ether) and polyamide-6,6 blends by functionalized polystyrenes,” by Chin, Hui H. Annual Technical Conference—SPE (2002) 60th(Vo 2) 1329-1333, Abstract only.
French Patent No. 2 768 738 dated Sep. 19, 1997 to Boutillier.
PCT International Publication No. WO 97/36894 published Oct. 9, 1997 of International Application No. PCT/US97/05098.
PCT International Publication No. WO 97/49741 published Dec. 31, 1997 of International Application No. PCT/NL97/00352.
PCT International Publication No. WO 97/49742 published Dec. 31, 1997 of International Application No. PCT/NL97/000353.
DeDecker Mark N.
Graves Daniel F.
Asinovsky Olga
Firestone Polymers LLC
McCollister Scott A.
Seidleck James J.
Skerry Ann M.
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