Polyethylene molding powder and porous articles made therefrom

Details Polyethylene molding powder and porous articles made therefrom Polyethylene molding powder and porous articles made therefrom

2011-07-19

2011-07-19

Eashoo, Mark (Department: 1767)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S077000, C264S125000

Reexamination Certificate

active

07981942

ABSTRACT:
The present invention relates to a new molding powder comprising polyethylene polymer particles. The molecular weight of the polyethylene polymer is within the range of from about 600,000 g/mol to about 2,700,000 g/mol as determined by ASTM 4020. The average particle size of the particles of the polyethylene polymer is within the range of from about 5 microns to about 1000 microns and the polyethylene has a powder bulk density in the range of from about 0.10 to about 0.30 g/cc. Also disclosed is a process for molding a shape from a molding powder comprising the inventive polyethylene polymer particles, as well as porous articles made in accordance with the process. The articles have excellent porosity and good strength for porous and porous filtration applications.

REFERENCES:
patent: 3024208 (1962-03-01), Goethel et at.
patent: 3954927 (1976-05-01), Duling et al.
patent: 4925880 (1990-05-01), Stein
patent: 4962167 (1990-10-01), Shiraishi et al.
patent: 4972035 (1990-11-01), Suga et al.
patent: 5300470 (1994-04-01), Cuffiani et al.
patent: 5587440 (1996-12-01), Ehlers et al.
patent: 5683634 (1997-11-01), Fujii et al.
patent: 5977229 (1999-11-01), Barth et al.
patent: 6770736 (2004-08-01), Haftka et al.
patent: 7049382 (2006-05-01), Haftka et al.
patent: 2002/0040113 (2002-04-01), Fritzsche et al.
patent: 2004/0006170 (2004-01-01), Haftka et al.
patent: 2004/0110853 (2004-06-01), Wang et al.
patent: WO 85/04365 (1985-10-01), None
patent: WO 00/18809 (2000-04-01), None
patent: WO 0018810 (2000-04-01), None
Sangeeta Hambir and J P Jog, Sintering of Ultra High Molecular Weight Polyethylene, Bull. Mater. Sci., v. 23, No. 3 (Jun. 2000).

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