US 12,434,412 B2
Process for producing functionalized porous composites
Hendrich Chiong, Florence, KY (US); Joseph Brian Scott, Florence, KY (US); and Victoria Black, Florence, KY (US)
Assigned to Celanese International Corporation, Irving, TX (US)
Filed by Celanese International Corporation, Irving, TX (US)
Filed on Nov. 2, 2023, as Appl. No. 18/500,459.
Claims priority of provisional application 63/422,021, filed on Nov. 3, 2022.
Prior Publication US 2024/0150538 A1, May 9, 2024
Int. Cl. B29C 43/00 (2006.01); B29C 67/04 (2017.01); C08J 9/24 (2006.01); C08J 9/26 (2006.01); C08J 9/28 (2006.01); C08J 9/36 (2006.01)
CPC B29C 43/006 (2013.01) [B29C 67/04 (2013.01); C08J 9/24 (2013.01); C08J 9/26 (2013.01); C08J 9/28 (2013.01); C08J 9/36 (2013.01); C08J 2323/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A process for forming a porous composite article comprising:
forming a molding powder into a desired shape, the molding powder comprising thermoplastic polymer particles combined with a chemical scavenger;
heating the shape to a temperature of 140° C. to 360° C. for a period of time sufficient to permit the thermoplastic polymer to soften while producing a porous structure having a porosity of at least about 30% and maintaining the shape under pressure, the chemical scavenger being contained within the porous structure; and
thereafter cooling and recovering the porous composite article having a porosity of at least about 30%, the porous composite article having a three dimensional, non-planar shape.