Process for forming microporous membranes

Details Process for forming microporous membranes Process for forming microporous membranes

2007-03-28

2010-11-30

Fortuna, Ana M (Department: 1797)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C264S176100, C264S177100, C264S204000, C210S500270, C210S500390, C210S500410, C210S500380

Reexamination Certificate

active

07842214

ABSTRACT:
A method for forming a microporous membrane having a microstructure is described. Dope and coagulant formulations are simultaneously cast, where the coagulant formulation diffuses into the dope formulation through an interface effecting a phase inversion forming a microstructure.

REFERENCES:
patent: 2783894 (1957-03-01), Lovell et al.
patent: 4761232 (1988-08-01), Bright
patent: 4770777 (1988-09-01), Steadly et al.
patent: 4822489 (1989-04-01), Nohmi et al.
patent: 4867881 (1989-09-01), Kinzer
patent: 4871494 (1989-10-01), Kesting et al.
patent: 4933081 (1990-06-01), Sasaki et al.
patent: 4992221 (1991-02-01), Malon et al.
patent: 5049276 (1991-09-01), Sasaki
patent: 5122273 (1992-06-01), Rekers et al.
patent: 5151227 (1992-09-01), Nguyen et al.
patent: 5228994 (1993-07-01), Tkacik et al.
patent: 5238618 (1993-08-01), Kinzer
patent: 5344701 (1994-09-01), Gagnon et al.
patent: 5444097 (1995-08-01), Tkacik
patent: 5451453 (1995-09-01), Gagnon et al.
patent: 5476665 (1995-12-01), Dennison
patent: 5498335 (1996-03-01), Moya
patent: 5500167 (1996-03-01), Degen
patent: 5510421 (1996-04-01), Dennison et al.
patent: 5620790 (1997-04-01), Holzki et al.
patent: 5656372 (1997-08-01), Gentile et al.
patent: 5708040 (1998-01-01), Hong et al.
patent: 5869174 (1999-02-01), Wang
patent: 6017455 (2000-01-01), Shimoda et al.
patent: 6413070 (2002-07-01), Meyering et al.
patent: 6513666 (2003-02-01), Meyering et al.
patent: 6565782 (2003-05-01), Wang et al.
patent: 6596167 (2003-07-01), Ji et al.
patent: 6632850 (2003-10-01), Hughes et al.
patent: 6706184 (2004-03-01), Sale et al.
patent: 6736971 (2004-05-01), Sale et al.
patent: 6776940 (2004-08-01), Meyering et al.
patent: 6790404 (2004-09-01), Yapel et al.
patent: 6805730 (2004-10-01), Herczeg
patent: 6878419 (2005-04-01), David et al.
patent: 6890435 (2005-05-01), Ji et al.
patent: 6890436 (2005-05-01), Komatsu et al.
patent: 6939468 (2005-09-01), Wang et al.
patent: 6954789 (2005-10-01), Dietz et al.
patent: 6994789 (2006-02-01), Sale et al.
patent: 7067058 (2006-06-01), Yeh et al.
patent: 7081273 (2006-07-01), Ji
patent: 7112272 (2006-09-01), Hughes et al.
patent: 7112280 (2006-09-01), Hughes et al.
patent: 7125603 (2006-10-01), David et al.
patent: 2001/0017280 (2001-08-01), Meyering et al.
patent: 2002/0113006 (2002-08-01), Sale et al.
patent: 2003/0038391 (2003-02-01), Meyering et al.
patent: 2003/0209485 (2003-11-01), Kools
patent: 2003/0213744 (2003-11-01), Kools et al.
patent: 2004/0084364 (2004-05-01), Kools
patent: 2006/0196830 (2006-09-01), Sale et al.
patent: 0 121 911 (1984-10-01), None
patent: 2001-0061733 (2001-07-01), None
patent: 2001-0078512 (2001-08-01), None
patent: WO 00/45942 (2000-08-01), None
patent: WO 2004/009611 (2004-01-01), None
patent: WO 2006/069307 (2006-06-01), None
Anderson, P. D., et al., “Viscoelastic Effects in Multilayer Polymer Extrusion,” Applied Rheology, vol. 16, Issue 4, (2006) pp. 198-205.
Barton, Allan F.M.,CRC Handbook of Polymer-Liquid Interaction Parameters and Solubility Parameters, CRC Press, Boca Raton, FL (1990).
Barton, Allan F.M.,CRC Handbook of Solubility Parameters and Other Cohesion Parameters, Second Edition, CRC Press, Boca Raton, FL (1991).
Bauer, C.J.M., et al., “The Resistance Towards Gas Transport of the Sublayer of Asymmetric PPO Hollow Fiber Membranes Determined by Plasma-Etching,” Journal of Membrane Science, vol. 57, (1991) pp. 307-320.
Grulke, Eric A., “Solubility Parameter Values,” Polymer Handbook, 4thEd., VII, (1999) pp. 675-688.
Khulbe, K.C., et al., “Characterization of PPO Membranes by Oxygen Plasma Etching, Gas Separation and Atomic Force Microscopy,” Journal of Membrane Science, vol. 171, (2000) pp. 273-284.
Kesting, Robert E.,Synthetic Polymeric Membranes, Second Edition. John Wiley and Sons, Inc., NY, (1985).
U.S. Application entitled “Coating Die Having Quick Assembly Features,” filed Oct. 29, 2004, having U.S. Appl. No. 10/977,273.
U.S. Application entitled “Reinforced Ion-Conductive Membranes,” filed Dec. 7, 2005, having U.S. Appl. No. 11/295,764.

Affiliated with

Also associated with

Rating

Process for forming microporous membranes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for forming microporous membranes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for forming microporous membranes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4236910