Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-12-11
2007-12-11
Lu, Caixia (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S106000, C526S352000
Reexamination Certificate
active
10829842
ABSTRACT:
Methods of polymerizing at least one olefin include contacting the olefin with a catalyst comprising chromium and with a cocatalyst comprising a non-transition metal cyclopentadienyl (Cp) compound. The polymerization may be performed in the presence of hydrogen. Using the cocatalyst in conjunction with the catalyst increases several properties, such as the high load melt index (HLMI), the MW, and the MN, of the polymers produced by this polymerization method. Polymer compositions produced by such methods have various unique properties, including a PDI greater than about 30. Additional embodiments include articles of manufacture or end use articles formed from such polymer compositions.
REFERENCES:
patent: 2825721 (1958-03-01), Hogan et al.
patent: 3071493 (1963-01-01), Whaley et al.
patent: 3119569 (1964-01-01), Baricordi
patent: 3248179 (1966-04-01), Norwood
patent: 3622521 (1971-11-01), Hogan et al.
patent: 3625864 (1971-12-01), Horvath
patent: 3887494 (1975-06-01), Dietz
patent: 3900457 (1975-08-01), Witt
patent: 3947433 (1976-03-01), Witt
patent: 4015059 (1977-03-01), Karol
patent: 4053436 (1977-10-01), Hogan et al.
patent: 4081407 (1978-03-01), Short et al.
patent: 4151122 (1979-04-01), McDaniel et al.
patent: 4152503 (1979-05-01), Short et al.
patent: 4177162 (1979-12-01), McDaniel et al.
patent: 4182815 (1980-01-01), McDaniel et al.
patent: 4247421 (1981-01-01), McDaniel et al.
patent: 4248735 (1981-02-01), McDaniel et al.
patent: 4277587 (1981-07-01), McDaniel et al.
patent: 4294724 (1981-10-01), McDaniel
patent: 4296001 (1981-10-01), Hawley
patent: 4297460 (1981-10-01), McDaniel et al.
patent: 4345055 (1982-08-01), Hawley
patent: 4364839 (1982-12-01), McDaniel et al.
patent: 4364841 (1982-12-01), McDaniel et al.
patent: 4364842 (1982-12-01), McDaniel et al.
patent: 4364854 (1982-12-01), McDaniel et al.
patent: 4364855 (1982-12-01), McDaniel et al.
patent: 4382022 (1983-05-01), McDaniel
patent: 4392990 (1983-07-01), Witt
patent: 4397765 (1983-08-01), McDaniel
patent: 4397769 (1983-08-01), McDaniel et al.
patent: 4402864 (1983-09-01), McDaniel
patent: 4405501 (1983-09-01), Witt
patent: 4405768 (1983-09-01), McDaniel
patent: 4424320 (1984-01-01), McDaniel
patent: 4424341 (1984-01-01), Hanson et al.
patent: 4436883 (1984-03-01), Witt
patent: 4436886 (1984-03-01), Tsai et al.
patent: 4444962 (1984-04-01), McDaniel et al.
patent: 4444964 (1984-04-01), McDaniel et al.
patent: 4444965 (1984-04-01), McDaniel et al.
patent: 4444966 (1984-04-01), McDaniel
patent: 4460756 (1984-07-01), McDaniel et al.
patent: 4501855 (1985-02-01), Noren
patent: 4504638 (1985-03-01), McDaniel et al.
patent: 4589957 (1986-05-01), Sherk et al.
patent: 4613484 (1986-09-01), Ayres et al.
patent: 4737280 (1988-04-01), Hanson
patent: 4900704 (1990-02-01), McDaniel et al.
patent: 4981831 (1991-01-01), Knudsen et al.
patent: 5418200 (1995-05-01), Carney et al.
patent: 5914375 (1999-06-01), Tsai et al.
patent: 6174981 (2001-01-01), Bergmeister et al.
patent: 6525148 (2003-02-01), McDaniel et al.
patent: 6531553 (2003-03-01), Shamshoum et al.
patent: 6583241 (2003-06-01), Beach et al.
patent: 6787608 (2004-09-01), VanDun et al.
patent: 6867278 (2005-03-01), McDaniel et al.
patent: 2001/0004663 (2001-06-01), Bergmeister et al.
patent: 2002/0013432 (2002-01-01), McDaniel et al.
patent: 2003/0096901 (2003-05-01), Aarila et al.
patent: 2003/0199648 (2003-10-01), McDaniel et al.
patent: 1 146 079 (2001-10-01), None
patent: 50045078 (1975-04-01), None
patent: WO 96/23006 (1996-08-01), None
Heinemann, Oliver, et al. “Bis(indenyl)chromium is a Dimer,” ORGANOMETALLICS (1996), vol. 15, No. 26, pp. 5462-5463.
Liang, Yuanfeng, et al. “Constrained Geometry Chromium Catalysts for Olefin Polymerization,” ORGANOMETALLICS (1996), vol. 15, No. 25, pp. 5284-5286.
PCT International Search Report for International Application No. PCT/US2005/009669, dated Jan. 30, 2006.
Dockter, “Cp Cocatalysts for Chromium Catalysts,”PI-210481 Search Report, Jul. 24, 2003, 35 pgs.
Hieber, et al., “Some Correlations Involving the Shear Viscosity of Polystyrene Melts,”Rheol Acta, vol. 28, No. 4, 1989, pp. 321-332.
Hieber, et al., “Shear-Rate-Dependence Modeling of Polymer Melt Viscosity,”Polymer Engineering and Science, vol. 32, No. 14, Jul. 1992, pp. 931-938.
Bird, et al., “Dynamics of Polymeric Liquids, vol. 1, Fluid Mechanics,” 2ndEdition, John Wiley & Sons, 1987, 10 pgs.
Benham Elizabeth A.
Collins Kathy S.
Jensen Michael D.
McDaniel Max P.
Secora Steven J.
Carroll Rodney B.
Chevron Phillips Chemical Company LP
Connley Rose, P.C.
Huseman Cheryl L.
Lu Caixia
LandOfFree
Polymers having broad molecular weight distributions and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymers having broad molecular weight distributions and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymers having broad molecular weight distributions and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3874987