Process for producing porous polymer films

Chemistry: molecular biology and microbiology – Carrier-bound or immobilized enzyme or microbial cell;... – Enzyme or microbial cell is immobilized on or in an organic...

Reexamination Certificate

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C428S411100, C435S180000, C435S395000, C523S201000, C525S902000

Reexamination Certificate

active

10832680

ABSTRACT:
Porous films are provided which include a blend of a film forming polymer and a non-film forming material, the film having a network of pores or channels throughout the film. The porous polymer films are formed between 0° and 80° C., retain porosity at elevated temperatures and are non-friable. A process for preparing porous polymer films and their applications are disclosed.

REFERENCES:
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patent: 3819542 (1974-06-01), Kreider
patent: 0 288 203 (1988-04-01), None
patent: 0711 199 (1994-07-01), None
patent: WO95/03878 (1995-02-01), None
Journal of Membrane Science 155 (1999), “Porous latex composite membranes: fabrication and properties”, Steven Jons, Paul Ries, Charles J. McDonald, pp. 79-99.
Biotechnology and Bioengineering, vol. 62, No. 1, Jan. 5, 1999; “A Patch Coating Method for Preparing Biocatalytic Films ofEscherichia coli”, pp. 44-55.

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