Patent ID: 6962745
Filing Date: 2005-11-08
Classification: B01D,B01J,B29C,C08J,C08L,C25B,H01G,H01M,Y02E,Y10T

Abstract:
1. A porous composite product with a homogeneous structure having a property that renders its self-supportive, the product being provided in the form of a film, exhibiting a “BET” specific surface greater than 10 m 2 /g and being formed of at least 20% by weight of at least one filler with the balance of the product being a non-fibrillated polymeric material, the said product being obtained by extrusion and having an open porous structure, wherein the at least one filler exhibits a specific surface greater than 1000 m 2 /g and the mean diameter of a plurality of pores of the porous composite product is less than 0.5 μm, wherein the polymeric material comprises elastomers or polymers selected from the group consisting of polyolefins, acrylic polymers, aromatic polymers, polyamides, polyimides, and vinyl polymers, wherein the polymeric material also comprises thermoplastic elastomers, soluble in polar organic solvents or water, which remain after the implementation of the manufacturing process, the thermoplastic elastomers selected from the group consisting of polyethers, poly(vinyl alcohol)s and ethylene-vinyl alcohol copolymers, and wherein the thermoplastic elastomers, soluble in polar organic solvents or water, which remain after the implementation of the manufacturing process include polyethers with a molecular mass of between 200,000 and 1,000,000.