Processes for controlling the viscosity of polyalphaolefins

Details Processes for controlling the viscosity of polyalphaolefins Processes for controlling the viscosity of polyalphaolefins

2009-08-13

2011-11-29

Lu, Caixia (Department: 1765)

Chemistry of hydrocarbon compounds

Compound or reaction product mixture

Polymer of indefinite molecular weight

C585S523000, C526S133000, C526S134000, C526S160000, C526S165000, C526S348200, C526S348300, C526S943000

Reexamination Certificate

active

08067652

ABSTRACT:
The invention relates to a process for forming a polyalphaolefin, the process comprising the step of polymerizing at least one C8-C12monomer, preferably a decene such as 1-decene, in the presence of an aluminoxane, an activator and a metallocene to form the polyalphaolefin, wherein the molar ratio of the aluminoxane to the metallocene is less than 250:1. The invention also relates to a process for forming a polyalphaolefin having a desired kinematic viscosity from at least one monomer in the presence of an aluminoxane, an organoboron compound and a metallocene. The process comprises the steps of, inter alia, providing a correlation between (i) the molar ratio of the aluminoxane to at least one of the organoboron compound and the metallocene, and (ii) the kinematic viscosity of the polyalphaolefin to form polyalphaolefins having predictable viscosities.

REFERENCES:
patent: 4752597 (1988-06-01), Turner
patent: 4892851 (1990-01-01), Ewen et al.
patent: 4931417 (1990-06-01), Miya et al.
patent: 4931517 (1990-06-01), Fujita
patent: 4933403 (1990-06-01), Kaminsky et al.
patent: 5001205 (1991-03-01), Hoel
patent: 5017714 (1991-05-01), Welborn, Jr.
patent: 5026798 (1991-06-01), Canich
patent: 5034549 (1991-07-01), Piotrowski et al.
patent: 5036034 (1991-07-01), Ewen
patent: 5055438 (1991-10-01), Canich
patent: 5064802 (1991-11-01), Stevens et al.
patent: 5086134 (1992-02-01), Antberg et al.
patent: 5087677 (1992-02-01), Brekner et al.
patent: 5126301 (1992-06-01), Tsutsui et al.
patent: 5126303 (1992-06-01), Resconi et al.
patent: 5132262 (1992-07-01), Rieger et al.
patent: 5132380 (1992-07-01), Stevens et al.
patent: 5132381 (1992-07-01), Winter et al.
patent: 5145819 (1992-09-01), Winter et al.
patent: 5153157 (1992-10-01), Hlatky et al.
patent: 5155080 (1992-10-01), Elder et al.
patent: 5225501 (1993-07-01), Fujita et al.
patent: 5227478 (1993-07-01), Koch
patent: 5241025 (1993-08-01), Hlatky et al.
patent: 5243002 (1993-09-01), Razavi
patent: 5278119 (1994-01-01), Turner et al.
patent: 5278265 (1994-01-01), Razavi
patent: 5281679 (1994-01-01), Jejelowo et al.
patent: 5296434 (1994-03-01), Karl et al.
patent: 5304614 (1994-04-01), Winter et al.
patent: 5324800 (1994-06-01), Welborn, Jr. et al.
patent: 5328969 (1994-07-01), Winter et al.
patent: 5329031 (1994-07-01), Miyake et al.
patent: 5330948 (1994-07-01), Marks et al.
patent: 5331057 (1994-07-01), Brekner et al.
patent: 5349032 (1994-09-01), Miyake et al.
patent: 5372980 (1994-12-01), Davis
patent: 5374753 (1994-12-01), Yamada et al.
patent: 5385877 (1995-01-01), Fujita et al.
patent: 5391629 (1995-02-01), Turner et al.
patent: 5391789 (1995-02-01), Rohrmann
patent: 5399636 (1995-03-01), Alt et al.
patent: 5401817 (1995-03-01), Palackal et al.
patent: 5406013 (1995-04-01), Patsidis et al.
patent: 5416177 (1995-05-01), Siedle et al.
patent: 5416178 (1995-05-01), Winter et al.
patent: 5416228 (1995-05-01), Ewen et al.
patent: 5427991 (1995-06-01), Turner
patent: 5439994 (1995-08-01), Inoue et al.
patent: 5441920 (1995-08-01), Welborn, Jr.
patent: 5442020 (1995-08-01), Davis
patent: 5449651 (1995-09-01), Reddy et al.
patent: 5453410 (1995-09-01), Kolthammer et al.
patent: 5455365 (1995-10-01), Winter et al.
patent: 5455366 (1995-10-01), Rohrmann et al.
patent: 5459117 (1995-10-01), Ewen
patent: 5466649 (1995-11-01), Jejelowo
patent: 5470811 (1995-11-01), Jejelowo et al.
patent: 5470927 (1995-11-01), Turner et al.
patent: 5477895 (1995-12-01), Willard
patent: 5491205 (1996-02-01), Langhauser et al.
patent: 5491207 (1996-02-01), Hoel
patent: 2003/0125595 (2003-07-01), Bagheri et al.
patent: 2006/0116303 (2006-06-01), Iimura et al.
patent: 2008/0171651 (2008-07-01), Tohi et al.
patent: 2009/0198089 (2009-08-01), Burton et al.
patent: 2009/0281360 (2009-11-01), Knowles et al.

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