The present invention relates to a method for preparing a macromolecular composition comprising phenylglyoxaldehyde-derivatives. The invention also relates to the macromolecular compositions per se, and to methods of using the macromolecular compositions. The macromolecular compositions are useful for undergoing subsequent reactions with small molecules, for instance to remove such small molecules from a solution.

A superabsorbent polymer composition includes superabsorbent polymer particles, a chelating agent and a mixture of an organic acid and a silicate-based salt. The superabsorbent polymer particles include crosslinked polymer of water-soluble ethylenically unsaturated monomers including acid groups, of which at least a part are neutralized, and the chelating agent includes EDTA or an alkali metal salt thereof, exhibiting improved antimicrobial and deodorizing properties without deterioration of the superabsorbent polymer properties such as centrifugal retention capacity.

Bio-based glacial acrylic acid, produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof and having impurities of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof, is polymerized to poly(acrylic acid) or superabsorbent polymer using the same processes as petroleum-derived glacial acrylic acid.

Disclosed is an absorbent containing an amine for absorption of an acid gas in a biogas, and a biogas purification system using the same.

A separation membrane, suitably for oil and water separation. The membrane including a porous substrate layer and an active layer arranged over at least a part of the substrate layer. The active layer includes a hydrophilic agent and a superhydrophilic agent. Also described is a method of producing the separation membrane and a drain valve comprising the membrane.

A porous polymer monolith comprises a polymer body having macroporous through-pores that facilitate fluid flow through the body and an array of mesopores adapted to bind from the fluid flow molecules of a predetermined range of sizes, wherein the surface area of the monolith is predominantly provided by the mesopores. Also disclosed is a method of making a porous polymer monolith. The method includes forming a polymer body by phase separation out of a solution containing at least a monomer, a crosslinker and a primary porogen, whereby the body contains multiple macroporous through-pores, wherein the solution further contains a secondary porogen comprising oligomers inert with respect to the monomer and cross-linker but chemically compatible with the monomer so as to form mesostructures within the polymer body during said phase separation, and washing the mesostructures from the body to provide an array of mesopores such that the surface area of the monolith is predominantly provided by the mesopores.

A gas-absorbing material that contains amino group-having polymer compound particles and fine particles having a primary particle diameter of 1000 nm or less is a gas-absorbing material having a markedly higher gas absorption/desorption speed. Here, as the polymer compound of the amino group-having polymer compound particles, for example, a (meth)acrylamide polymer can be used, and as the fine particles, for example, water-repellent inorganic particles or fluororesin particles can be used.

The present disclosure provides a three-dimensional alkynyl-containing porous aromatic framework polymer and a preparation method and use thereof. The polymer has a structure represented by Formula I:

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The preparation method includes: under a protective atmosphere, mixing tetrakis(p-bromophenyl)methane, 1,3,5-triethynyl benzene, a catalyst and an amine solvent, and subjecting to a Sonogashira-Hagihara coupling reaction to obtain the three-dimensional alkynyl-containing porous aromatic framework polymer having the structure represented by Formula I.

The present invention provides a gas adsorbent comprising a number of microspheres formed by agglomeration of zeolite and adhesive. Among the plurality of microspheres, at least some of the microspheres have a porous structure and contain inflatable balls inside. In the present invention, the high molecular polymer expansion ball is added into the zeolite microsphere, and more pore structures are created in the zeolite microsphere by utilizing its characteristics of expansion, solidification and rupture at different temperatures. Thus, the adsorption capacity of the zeolite microsphere to air is increased to achieve a better frequency reduction effect.

One aspect of the present invention relates to a coated resin particle including: a water-absorbent resin particle; and a coating layer that coats at least a part of a surface of the water-absorbent resin particle, in which the coating layer contains a water-soluble component in which a solubility in 100 g of water is in a range of 1.0 g or more and 150 g or less at 25° C.