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
2007-06-01
2011-11-15
Gulakowski, Randy (Department: 1766)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S438000, C525S445000, C528S282000, C528S286000, C528S275000
Reexamination Certificate
active
08058360
ABSTRACT:
Polymer blends suitable for packaging are disclosed that include one or more impact modifiers; and one or more polyethylene terephthalate homopolymers or copolymers obtained by a melt phase polymerization using a catalyst system comprising aluminum atoms in an amount, for example, from about 3 ppm to about 60 ppm and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues in an amount, for example, from about 1 ppm to about 25 ppm, in each case based on the weight of the one or more polyethylene terephthalate homopolymers or copolymers The polymer blends disclosed exhibit improved low temperature toughness compared with blends made using polymers prepared with conventional catalyst systems.
REFERENCES:
patent: 3496143 (1970-02-01), Siggel et al.
patent: 4088709 (1978-05-01), Seymour et al.
patent: 4172859 (1979-10-01), Epstein
patent: 4284540 (1981-08-01), Iida et al.
patent: 4753980 (1988-06-01), Deyrup
patent: 5068283 (1991-11-01), Ohmae et al.
patent: 5086116 (1992-02-01), Ohmae et al.
patent: 5086118 (1992-02-01), Ohmae et al.
patent: 5086119 (1992-02-01), Ohmae et al.
patent: 5098953 (1992-03-01), Ohmae et al.
patent: 5206291 (1993-04-01), Stewart
patent: 5208292 (1993-05-01), Hert et al.
patent: 5296550 (1994-03-01), Natarajan et al.
patent: 5407999 (1995-04-01), Hert et al.
patent: 5436296 (1995-07-01), Swamikannu et al.
patent: 5483001 (1996-01-01), Hert
patent: 5652306 (1997-07-01), Meyer et al.
patent: 6156867 (2000-12-01), Aoyama et al.
patent: 6197851 (2001-03-01), Maxwell et al.
patent: 6576309 (2003-06-01), Dalgewicz et al.
patent: 6953768 (2005-10-01), Wallace et al.
patent: 6986864 (2006-01-01), Porter
patent: 7015261 (2006-03-01), Zerafati et al.
patent: 7015267 (2006-03-01), Cartier et al.
patent: 7119152 (2006-10-01), Lacroix et al.
patent: 7132383 (2006-11-01), Nakajima et al.
patent: 7153811 (2006-12-01), Wallace et al.
patent: 7521523 (2009-04-01), Jenkins et al.
patent: 2003/0045673 (2003-03-01), Nakajima et al.
patent: 2005/0014929 (2005-01-01), Rule
patent: 2005/0222345 (2005-10-01), Nakayama et al.
patent: 2005/0261463 (2005-11-01), Trexler et al.
patent: 2006/0276587 (2006-12-01), Hong et al.
patent: 2007/0066735 (2007-03-01), Quillen et al.
patent: 2007/0066791 (2007-03-01), Jernigan et al.
patent: 2008/0161465 (2008-07-01), Jenkins et al.
patent: 2008/0161529 (2008-07-01), Jenkins et al.
patent: 2008/0255280 (2008-10-01), Sims et al.
patent: 481471 (1992-04-01), None
patent: 737715 (1996-10-01), None
patent: 62-146949 (1987-06-01), None
patent: 62-146950 (1987-06-01), None
patent: WO 00/15716 (2000-03-01), None
patent: WO 00/15717 (2000-03-01), None
patent: WO 00/23520 (2000-04-01), None
Fred W. Billmeyer, Jr., Method for Estimating Intrinsic Viscosity, Journal of Polymer Science, 1949, pp. 83-86, 4, E.I. du Pont de Nemours & Co., Arlington, New Jersey.
D.W. Van Krevelen, CHIMIA, 32 (1978), p. 279.
Die Angewandte Makromolekulare Chemie, 1992, 196 p. 89.
Penco et al., Journal of Applied Polymer Science, 57, 329 (1995).
Rubber Toughened Engineering Plastics, A.A. Collyer, Chapman & Hall, London, 1994, pp. 136-164.
Schiers, J., Additives for the Modification of Poly(Ethylene Terephthalate) to Produce Engineering-Grade Polymers in Modern Polyesters, Sheirs, J. and Long, T.E. (Eds)., Wiley, New York, 2003, pp. 506-515.
Stewart et al., Polymer Engineering and Science, 33 (11), 675 (1993).
International Search Report for PCT/US2008/006446 dated Feb. 19, 2009 (corresponding PCT application).
European Office Action issued Jul. 5, 2011, in Patent Application No. 08 767 824.9.
Colhoun Frederick Leslie
Martin Roger Lee
Peters Richard Dalton
Stewart Mark Edward
Weinhold Stephen
Dollinger Mike M
Grupo Petrotemex, S.A. DE C.V.
Gulakowski Randy
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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