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
2006-04-11
2006-04-11
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...
C525S245000, C525S249000, C525S333200, C525S326100, C525S359200, C526S241000, C526S293000, C526S346000, C526S347000, C526S326000
Reexamination Certificate
active
07026406
ABSTRACT:
A syndiotactic styrenic polymer having a narrow molecular weight distribution which is a (co)polymer comprising at least one structural unit represented by the following Formula (1):wherein C1of a phenyl group thereof has a tacticity of 30% or more in terms of a racemic pentad determined by13C-NMR, and Raand m are as defined in the specification. The disclosure is also directed to a block copolymer comprising the above polymer as one segment, to a block graft polymer prepared by modifying one block of the above polymer with a nitrogen-containing aromatic polymer, and to a process for preparing a syndiotactic styrenic polymer in which a styrenic monomer is polymerized in the presence of a catalyst comprising a reaction product of a transition metal compound and at least one co-catalyst selected from organic aluminunoxy compounds.
REFERENCES:
patent: 4689288 (1987-08-01), Buiguez et al.
patent: 5446117 (1995-08-01), Baird et al.
patent: 5554695 (1996-09-01), Machida et al.
patent: 5616656 (1997-04-01), Dever et al.
patent: 5866659 (1999-02-01), Chung et al.
patent: 0 210 615 (1987-02-01), None
patent: 0 570 932 (1993-11-01), None
patent: 0 745 619 (1996-12-01), None
patent: 62-104818 (1987-05-01), None
patent: 62-1877081 (1987-08-01), None
patent: 63-241009 (1988-10-01), None
patent: 01-146912 (1989-06-01), None
patent: 01-278503 (1989-11-01), None
patent: 03-075204 (1991-03-01), None
patent: 03-025412 (1991-09-01), None
patent: 04-130114 (1992-05-01), None
patent: 05-017533 (1993-01-01), None
patent: 05-295056 (1993-11-01), None
patent: 05-310834 (1993-11-01), None
patent: 05-320280 (1993-12-01), None
patent: 05-320281 (1993-12-01), None
patent: 06-298862 (1994-10-01), None
patent: 11-158242 (1999-06-01), None
patent: 2000 026529 (2000-01-01), None
patent: WO-01/02447 (2001-01-01), None
Riccardo, et al., “Synthesis of Syndiotactic Polystyrene: Reaction Mechanisms and Catalysis”, Prog. Polym. Sci., vol. 21, No. 1, pp. 47-88, 1996.
Okuda, J., et al., “Syndiospecific polymerization of styrene using methylaluminoxane-activated bis(phenolato) titanium complexes”, Macromolecular Chemistry and Physics, vol. 199, No. 4, pp. 543-545, Apr. 1, 1998.
Kim, et al., “Synthesis of 4-tert-butyldimethylsilylosxystyrene and its copolymerization with styrene using (η5-indenyl) trichlorotitanium in the presence of methylaluminoxane”, Macromolecular Rapid Communications, vol. 20, No. 4, pp. 175-178, Apr. 1999.
Kawabe, et al., “Syndiospecific Living Polymerization of Silyl-Protected Hydroxystyrene Derivatives and Preparation of Syndiotactic Poly(4-hydroxystyrene) with Narrow Molecular Weight Distribution”, Macromolecular Chemistry and Physics, vol. 202, No. 16, pp. 3157-3164, Nov. 7, 2001.
Kawabe, et al., “Syndiospecific Living Block Copolymerization of Styrenic Monomers Containing Functional Groups, and Preparation of Syndiotactic Poly{(4-hydroxystyrene)-block-[(4-methylstyrene)-co-(4-hydroxystyrene)]}”, Macromolecular Chemistry and Physics, vol. 203, No. 1, pp. 24-30, Jan. 9, 2002.
Macromolecules 1998, 31, 8650-8652, Zhaomin Hou et al., One Step Block-Copolymerization Of Ethylene With Styrene By C5Me5//ER-Ligated Samarium (II) Complexes (ER=OAr, SAr).
Science and Technology in Catalysis, 1998, 269-277, Norio Tomotsu et al., Recent Development Of Catalysts For Syndiospecific Polymerization of Styrene.
Metalorganic Catalysts For synthesis And Polymerization, W. Kaminsky (Ed.), Apringer-Verlag, Berlin, 1999, pp. 435-445, K. Yokota et al., “Syndiospecific Polymerization of Styrene”.
Advances in Polymer Science, vol. 127, pp. 143-187, Springer-Verlag Berlin Heidelberg, 1997, W. Kaminsky et al., “Metallocences for Polymer Synthesis”.
Chem. Rev. 2000, 1223-1252, G. W. Coates, “Precise Control of Polyolefin Sterochemistry Using Single-Site Metal Catalysts”.
R. Po' et al.: “Synthesis of syndiotactic polystyrene: Reaction mechanisms and catalysis,” Prog. Polym: Sci., 1996, vol. 21, 47-88.
J. Okuda et al.: “Syndiospecific polymerization of styrene using methylaluminoxane-activated bis(phenolato)titanium complexes,” Macromol. Chem. Phys., 1998, vol. 199, 543-545.
J. Amer. Chem. Soc., 1957, vol. 79, pp. 2026-2027.
Makromol. Chem., 1960, vol. 36, pp. 200-208.
Ishihama, Y., et al.: “Living cationic polymerization of sytrene by the 1-phenylthyl chloride/tin tetracholride initialing system in the presence of tetra-n-butylammonium chloride,” Polymer Bulletin, 1990, vol. 24, pp. 201-206.
Higashimura, T. et al.: “Living Cationic Polymerization of Styrene: New Initiating Systems Based on Added Halide Salts and the Nature of the Growing Species,” MACROMOLECULES, 1993, vol. 26, pp. 744-751.
Georges, M. K. et al.: “Narrow Molecular Weight Resins by a Free-Radical Polymerization Process,” MACROMOLECULES, 1993, vol. 26, pp. 2987-2988.
Georges, M. K. et al.: “Narrow Polydispersity Polystyrene by a Free-Radical Polymerization Process-Rate Enhancement,” MACROMOLECULES, 1994, vol. 27, pp. 7228-7229.
Ho, T. et al.: “Synthetic Methods and Reactions; 321. Mild and Effective Cleavage of Esters and Ethers with Phenyltrimethylsilane/Iodine Reagent,” SYNTHESIS, 1977, pp. 417-418.
Willard, P. G. et al.: “Boron Trihalide-Methyl Sulfide Complexes as Convenient Reagents For Dealkylation of Aryl Ethers,” Tetrahedron Letters, 1980, vol. 21, pp. 3731-3734.
McOmie, J.F.W. et al.: “Demethylation of Aryl Methyl Ethers by Boron Tribromide,” TETRAHEDON, 1968, vol. 24, pp. 2289-2292.
Grassi, A. et al.: “Reactivity of Some Substituted Styrenes in the Presence of a Syndiotactic Specific Polymerization Catalyst,” MACROMOLECULES, 1989, vol. 22, pp. 104-108.
Barclay, G.C. et al.: “The ‘Living’ Free Radical Synthesis of Poly(4-hydroxystyrene): Physical Properties and Dissolution Behavior,” MACROMOLECULES, 1988, vol. 31, pp. 1024-1031.
Barclay, G.G. et al.: “Narrow Polydispersity Polymers for Microlithography: Synthesis and Properties,” Proc. SPIE., 1996, vol. 2724, pp. 249-260.
Higashimura, T. et al.: “Living cationic polymerization of 4-tert-butoxystyrene and synthesis of (poly4-vinylphenol) with narrow molecular weight distribution,” Makromol, Chem., Suppl., 1989, vol. 15, pp. 127-136.
Hirai, A. et al.: “Polymerization of Monomers Containing Functional Groups Protected by Trialkylsilyl Groups, 1,” Makromol. Chem., Rapid Commun., 1982, vol. 3, pp. 341-946.
Furukawa, J. et al.: “Phosphorus-Containing Polystyrine Derivatives as Flame Resistance,” Polymer Journal, 1980. vol. 12, No. 5. pp. 277-285.
Ito, H. et al.: “Living Anionic Polymerzation of Silyl-Protected Hydroxystyrene at Room Temperature,” Polym. Mater. Sci. Eng., 1993, vol. 68, pp. 12-13.
Weiss, W.: “Chloromethyl Ethers, Cigarettes, Cough and Cancer,” J. Occup. Med., 1976, vol. 18, pp. 194-199.
Pepper, K.W. et al.: “Properties of Ion-exchange Resins in Relation to their Structure. Part VI, Anion-exchange Resins derived from Styrene-Divinyl-benzene Copolymers,” J. Chem. Soc., 1953, vol. 18, pp. 4097-4105.
Kurusu et al.: “Synthesis and Reaction of Polymer Containing Nicotinamide Structure,” Kogyokagaku Zassi, 1968, vol. 71, No. 6, pp. 934-941 (Translation of pp. 935 and 940).
Kobunshi Jikken Gaku, 1996, vol. 6, pp. 48-55 (Translation of pp. 52 and 53).
Gervaśi, J.A. et al.: “The Preparation of Graft Copolymers of Polystyrene with Poly-2-vinylpyridine.” J. Polymer Sci.: Part C, 1968, vol. 24, pp. 207-218.
Selb, J, et al.: “Graft copolymer: 1. Synthesis and characterization of poly(styrene-g-2-vinylpyridine)” POLYMER, 1979, vol. 20, pp. 1259-1267.
Selb, J. et al.: “Graft copolymers: 2. Specific instability of some poly (styrene-g-2-vinyl pyridines) obtained from chloromethylated polystyrene,” POLYMER, 1979, vol. 20, pp. 1268-1272.
Selb, J. et al.: “Graft
Asai Michihiko
Fukui Yoshifumi
Hagihara Hideaki
Hoang The Ban
Jin Jizhu
Asinovsky Olga
Darby & Darby
Japan Chemical Innovation Institute
National Institute of Advanced Industrial Science and Technology
Seidleck James J.
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