Oxygen tailoring of polyethylene blow molding resins

Details Oxygen tailoring of polyethylene blow molding resins Oxygen tailoring of polyethylene blow molding resins

2007-10-23

2007-10-23

Boykin, Terressa (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

C264S083000, C264S141000, C264S210300

Reexamination Certificate

active

10962342

ABSTRACT:
Processes are disclosed for oxygen-tailoring polyethylene blow molding resin. Polyethylene resin is conveyed through a feed zone, a melt-mixing zone and a melt zone, wherein the temperature of the polyethylene resin is from about 216° C. to about 260° C. in the melt zone. The resin is contacted with oxygen in an amount of at least about 20 parts by weight oxygen per million parts by weight resin. The oxygen-treated resin can be used to make polyethylene blow molded articles having improved melt strength, processability, and die swell.

REFERENCES:
patent: 33269 (1861-09-01), Smith
patent: 4226905 (1980-10-01), Harbourne
patent: 4460750 (1984-07-01), Thiersault et al.
patent: 4578431 (1986-03-01), Shaw et al.
patent: 4614764 (1986-09-01), Colombo et al.
patent: 5032562 (1991-07-01), Lo et al.
patent: 5073598 (1991-12-01), Anzini
patent: 5405917 (1995-04-01), Mueller, Jr. et al.
patent: 5486575 (1996-01-01), Shroff
patent: 5525678 (1996-06-01), Mink et al.
patent: 5530072 (1996-06-01), Shirodkar
patent: 5728335 (1998-03-01), Neubauer
patent: 5736618 (1998-04-01), Poloso
patent: 5739266 (1998-04-01), Piana
patent: 5916926 (1999-06-01), Cooper et al.
patent: 6114486 (2000-09-01), Rowland et al.
patent: 6147167 (2000-11-01), Mack et al.
patent: 6187423 (2001-02-01), Maeger et al.
patent: 6221925 (2001-04-01), Constant et al.
patent: 6248840 (2001-06-01), Sukhadia et al.
patent: 6392056 (2002-05-01), Wood et al.
patent: 6878454 (2005-04-01), Shannon et al.
patent: 0 457 441 (1991-04-01), None
patent: 700 769 (1996-03-01), None
patent: 729 387 (1996-09-01), None
patent: 1 408 055 (2004-04-01), None
patent: WO 03/047839 (2003-06-01), None
patent: WO 04/005357 (2004-01-01), None

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