Membrane filtration

Method and program for determining cleaning trouble in fresh water generator

US12569813 • Toray Industries, Inc.

provides a fresh water generator operating method and a determination program that are employed in a method for cleaning a separation membrane module following membrane filtration, and that, while various cleaning steps such as reverse pressure cleaning, air cleaning, chemical solution cleaning are taking place after completion of the membrane filtration, determines cleaning troubles by calculating a temporal change in resistance increase rate on the basis of an increase in membrane differential pressure.

Process for producing alternan-oligosaccharide

US12571015 • Societe des Produits Nestle S.A.

process (S 1 ) for producing alternan-oligosaccharide ( 8 ), comprising contacting in a reactor ( 11 ) sucrose ( 9 ) with a catalytically effective amount of alternansucrase enzyme ( 13 ) and acceptor molecules ( 12 ), wherein the alternansucrase enzyme ( 13 ) and acceptor molecules ( 12 ) are present in the reactor ( 11 ) in an aqueous liquid ( 4 ) and the sucrose ( 9 ) is continuously or half-continuously fed to the reactor ( 11 ), and wherein the sucrose ( 9 ) and the acceptor molecules ( 12 ) are converted to alternan-oligosaccharide ( 8 ), and fructose ( 6 ) is formed as a by-product, continuously or half-continuously removing at least a part of the fructose ( 6 ) from the reactor ( 11 ) by membrane filtration ( 17 ).

Substrate for composite membrane

US12573652 • TEIJIN LIMITED

substrate for a composite membrane includes a microporous polyolefin membrane for carrying a hydrophilic resin compound within the pores of the microporous membrane wherein: the average pore diameter is 1 nm to 50 nm; the porosity is 50% to 78%; the membrane thickness is 1 m to 12 m; and, when a mixed solution of ethanol and water (volume ratio 1/2) is dripped onto a surface of the microporous polyolefin membrane which has not undergone hydrophilization treatment, the contact angle 1 between the droplet and the surface is 0 to 90 degrees 1 second after the dripping, and the contact angle 2 between the droplet and the surface is 0 to 70 degrees 10 minutes after the dripping, and the rate of change of the contact angle (( 1 2)/ 1 100) is 10 to 50%.

Microporous membranes, separators, lithium batteries, and related methods

US12573717 • Celgard, LLC

In accordance with at least selected embodiments, novel or improved separator membranes, separators, batteries including such separators, methods of making such membranes and/or separators, and/or methods of using such membranes and/or separators are disclosed or provided.

Raw-material liquid concentration system and concentration apparatus

US12569811 • Asahi Kasei Kabushiki Kaisha

This raw-material liquid concentration system is for use in a pharmaceutical product manufacturing process, and employs a membrane-distillation method involving: bringing a raw-material liquid containing a solvent and a solute into contact with cooling water through a membrane-distillation membrane; passing the solvent in the raw-material liquid through the membrane-distillation membrane in the form of vapor; and causing the solvent to move toward the side of the cooling water, wherein the membrane-distillation membrane is a porous membrane that has a water contact angle of at least 90 at the surface thereof, has an average pore diameter of 0.02-0.5 m, and has a porosity of 60-90%.

Mash filter membrane

US12570937 • Heineken Supply Chain B.V.

The invention is directed to a mash filter membrane comprising an elastomeric composition that comprises more than 50 wt % of one or more elastomer, based on the total weight of polymers in the elastomeric composition.