Abstract:
Provided are graft copolymer particles enabling introduction of adsorptive functional groups adsorbing metals and others, a method for producing same, and an adsorbent using same. (1) Porous graft copolymer particles containing graft chains introduced into porous particles (particle surface having an average pore diameter of 0.01-50 μm) including at least one resin selected from olefin resins, water-insoluble modified polyvinyl alcohol resins, amide resins, cellulosic resins, chitosan resins and (meth)acrylate resins. (2) A method for producing porous graft copolymer particles including (I) melt-kneading a polymer A and a polymer B other than the polymer A to obtain a compound material, (II) extracting and removing the polymer B from the compound material to obtain a porous material of the polymer A, (III) granulating the porous material, and (IV) introducing graft chains into the porous particles. (3) An adsorbent of porous graft copolymer particles.
Abstract:
An embodiment of this invention discloses a method for producing a network texture and the method comprises the steps of: formation of a porous structure as a template (matrix); formation of two coherent, independent, and separated robust continuous network structures within the matrix by using the matrix as the template; softening or removing the matrix to shift the two continuous network structures, leading to a novel network texture comprising two incoherent continuous network structures.
Abstract:
Described herein are absorbent articles and methods of making such articles. The articles are made by bonding a copolymer onto a substrate to form a core. The absorbent articles are particularly useful in personal care product, e.g., disposable hygiene products.
Abstract:
The objective of the present invention is to provide to a method for easily producing high-performance porous cellulose beads having high mechanical strength. Also, the objective of the present invention is to provide an adsorbent produced from the high-performance porous cellulose beads. According to the present invention, high-performance porous cellulose beads can be easily produced from porous cellulose beads, and an adsorbent having high strength and high adsorption amount can be easily produced from the high-performance porous cellulose beads.
Abstract:
An embodiment of this invention discloses a method for producing a network texture and the method comprises the steps of: formation of a porous structure as a template (matrix); formation of two symmetry, independent, and separated robust continuous network structures within the matrix by using the matrix as the template; softening or removing the matrix to shift the two continuous network structures, leading to a novel network texture comprising two asymmetrical continuous network structures.
Abstract:
Process for the production of a polymer foam with use of hydrogel pearls as porosity generating template, comprising the steps of:—providing a matrix of polymer or prepolymer in viscous state including, as a dispersed phase, hydrogel pearls, where said pearls are dispersed in said matrix so as to generate intercommunicating cells,—causing the solidification of the matrix of polymer or prepolymer to obtain said polymer foam including said hydrogel pearls, characterised in that it comprises the operation of subjecting the thus obtained foam to conditions which cause the dehydration of said hydrogel pearls so as to obtain a reduction of volume of said pearls and—removing the dehydrated pearls by immersion in water of the polymer foam or by exposure of the foam to a flow of pressurized gas or water.
Abstract:
Provided are graft copolymer particles enabling introduction of adsorptive functional groups adsorbing metals and others, a method for producing same, and an adsorbent using same. (1) Porous graft copolymer particles containing graft chains introduced into porous particles (particle surface having an average pore diameter of 0.01-50 μm) including at least one resin selected from olefin resins, water-insoluble modified polyvinyl alcohol resins, amide resins, cellulosic resins, chitosan resins and (meth)acrylate resins. (2) A method for producing porous graft copolymer particles including (I) melt-kneading a polymer A and a polymer B other than the polymer A to obtain a compound material, (II) extracting and removing the polymer B from the compound material to obtain a porous material of the polymer A, (III) granulating the porous material, and (IV) introducing graft chains into the porous particles. (3) An adsorbent of porous graft copolymer particles.
Abstract:
A new conductive interconnected porous film, useful as a material for a gas diffusion layer which is used in a solid polymer type fuel cell, which satisfies the requirements of a good conductivity, good gas permeability, surface smoothness, corrosion resistance, and low impurities and which is strong in bending and excellent in handling to an extent not obtainable by existing sheet materials of carbon fiber, that is, a conductive interconnected porous film wherein a resin base material part of a thermoplastic resin has a porous interconnected cell structure which is formed by removal of removable particulate matter and has cells of sizes of 10 μm to 50 μm and wherein the resin base material part is comprised of different particle size particles of first carbon particles of large size carbon particles of a diameter of 5 μm or more and second carbon particles of micro size carbon particles of a diameter of 10 nm or more mixed together, and a method of production of the same.
Abstract:
Described herein are foam-like materials having substantially the same physical structure of polyurethane foams but with properties that can be tailored for a particular application. Methods of forming these foam-like materials are also described.
Abstract:
Described herein are methods of making open celled foams including a matrix of interconnected spheres. The open celled foams are silicone based materials and can be used to coat implants, such as breast implants, and function to encourage tissue ingrowth and reduce capsular formation.