Patent classifications
C08J9/26
Mesoporous poly (aryl ether ketone) hollow fiber membranes and use thereof in mass transfer processes
A process for the efficient transfer of molecules between phases employing mesoporous poly (aryl ether ketone) hollow fiber membranes is provided. The method addresses the controlled transfer of reactants into and removal of reaction products from a reaction media and the removal and separation of target molecules from process streams by membrane-assisted liquid-liquid extraction. A number of possible modes of liquid-liquid extraction are possible according to the invention by utilizing porous poly (aryl ether ketone) hollow fiber membranes of Janus-like structure that exhibit a combination of hydrophilic and hydrophobic surface characteristics. The method of the present invention can address the continuous manufacture of chemicals in membrane reactors and is useful for a broad range of separation applications, including separation and recovery of active pharmaceutical ingredients.
Porous body, and method for producing porous body
The present invention provides a porous body, the swelling of which under acidic conditions is suppressed, and a method for producing the porous body. The first porous body of the present invention is formed of a copolymer of an epoxy compound and a curing agent, wherein the porous body is a porous body containing no primary to tertiary amino groups and has an interconnected pore structure in which holes provided inside the porous body communicate with each other. The second porous body of the present invention is formed of a copolymer of an epoxy compound and a curing agent, wherein the porous body is a porous body containing no nitrogen atom to be quaternized by acid treatment, and has an interconnected pore structure in which holes provided inside the porous body communicate with each other.
IMPLANTABLE MEDICAL DEVICE WITH VARIED COMPOSITION AND POROSITY, AND METHOD FOR FORMING SAME
A method for forming a thermoplastic body having regions with varied material composition and/or porosity. Powder blends comprising a thermoplastic polymer, a sacrificial porogen and an inorganic reinforcement or filler are molded to form complementary parts with closely toleranced mating surfaces. The parts are formed discretely, assembled and compression molded to provide a unitary article that is free from discernible boundaries between the assembled parts. Each part in the assembly has differences in composition and/or porosity, and the assembly has accurate physical features throughout the sections of the formed article, without distortion and nonuniformities caused by variable compaction and densification rates in methods that involve compression molding powder blends in a single step.
Solvent Free Process for Manufacturing Membranes
The invention relates to the manufacturing of porous polymer membranes by (a) providing pellets comprising a polymer matrix and particles in the ratio 90:10 to 10:90, (b) converting said pellets into a non-porous film by a solvent-free process; (c) removing said particles from said film with an aqueous composition to thereby obtain said membrane. The invention further relates to pellets useful in such manufacturing process as well as porous polymer membranes obtainable or obtained by such manufacturing process as well as textile materials and articles containing such membranes; to the use of such pellets, membranes, and articles.
Solvent Free Process for Manufacturing Membranes
The invention relates to the manufacturing of porous polymer membranes by (a) providing pellets comprising a polymer matrix and particles in the ratio 90:10 to 10:90, (b) converting said pellets into a non-porous film by a solvent-free process; (c) removing said particles from said film with an aqueous composition to thereby obtain said membrane. The invention further relates to pellets useful in such manufacturing process as well as porous polymer membranes obtainable or obtained by such manufacturing process as well as textile materials and articles containing such membranes; to the use of such pellets, membranes, and articles.
POLYIMIDE PRECURSOR SOLUTION, METHOD FOR PRODUCING POROUS POLYIMIDE FILM, POROUS POLYIMIDE FILM, AND INSULATED WIRE
A polyimide precursor solution includes: a polyimide precursor; polyester resin particles containing a polyester resin and having a volume average particle diameter of from 3 μm to 50 μm inclusive and an average circularity of 0.970 or more; and a solvent.
Methods for reducing contamination in a biological substance
Provided herein are materials and methods of reducing contamination in a biological substance or treating contamination in a subject by one or more toxins comprising contacting the biological substance with an effective amount of a sorbent capable of sorbing the toxin, wherein the sorbent comprises a plurality of pores ranging from 50 Å to 40,000 Å with a pore volume of 0.5 cc/g to 5.0 cc/g and a size of 0.05 mm to 2 cm and sorbing the toxin. Also provided are kits to reduce contamination by one or more toxins in a biological substance comprising a sorbent capable of sorbing a toxin, wherein the sorbent comprises a plurality of pores ranging from 50 Å to 40,000 Å with a pore volume of 0.5 cc/g to 5.0 cc/g and a size of 0.05 mm to 2 cm and a vessel to store said sorbent when not in use together with packaging for same.
Methods for reducing contamination in a biological substance
Provided herein are materials and methods of reducing contamination in a biological substance or treating contamination in a subject by one or more toxins comprising contacting the biological substance with an effective amount of a sorbent capable of sorbing the toxin, wherein the sorbent comprises a plurality of pores ranging from 50 Å to 40,000 Å with a pore volume of 0.5 cc/g to 5.0 cc/g and a size of 0.05 mm to 2 cm and sorbing the toxin. Also provided are kits to reduce contamination by one or more toxins in a biological substance comprising a sorbent capable of sorbing a toxin, wherein the sorbent comprises a plurality of pores ranging from 50 Å to 40,000 Å with a pore volume of 0.5 cc/g to 5.0 cc/g and a size of 0.05 mm to 2 cm and a vessel to store said sorbent when not in use together with packaging for same.
COMPOSITE MATERIAL
A composite material according to the present invention includes a solid portion including inorganic particles and a resin. The composite material has a porous structure including a plurality of voids surrounded by the solid portion. The composite material satisfies (i) and/or (ii). (i) P.sub.2 is 500 or more. (ii) The composite material has a heat conductivity of 0.5 W/(m.Math.K) or more and a thickness of 0.5 mm to 2.5 mm, the void have an average diameter of 50 μm to 1500 μm, and P.sub.3 is 70% to 90%. P.sub.2=the heat conductivity [W/(m.Math.K)] of the composite material×P.sub.3×100/an amount [volume %] of the inorganic particles P.sub.3 [%]=(F.sub.0−F.sub.1)×100/F.sub.0
COMPOSITE MATERIAL
A composite material according to the present invention includes a solid portion including inorganic particles and a resin. The composite material has a porous structure including a plurality of voids surrounded by the solid portion. The composite material satisfies (i) and/or (ii). (i) P.sub.2 is 500 or more. (ii) The composite material has a heat conductivity of 0.5 W/(m.Math.K) or more and a thickness of 0.5 mm to 2.5 mm, the void have an average diameter of 50 μm to 1500 μm, and P.sub.3 is 70% to 90%. P.sub.2=the heat conductivity [W/(m.Math.K)] of the composite material×P.sub.3×100/an amount [volume %] of the inorganic particles P.sub.3 [%]=(F.sub.0−F.sub.1)×100/F.sub.0