摘要:
Provided is a filler for affinity chromatography having a high dynamic binding capacity for proteins and having excellent alkali resistance and storage stability. The filler for affinity chromatography of the present invention comprises a porous particle consisting of a copolymer of 40 parts to 99.5 parts by mass of (M-1) a methacryloyl group-containing vinyl monomer that contains a hydroxyl group and does not contain an epoxy group, 0.5 parts to 30 parts by mass of (M-2) an epoxy group-containing vinyl monomer, 0 parts to 59.5 parts by mass of (M-3) a methacryloyl group-containing vinyl monomer which is other than the monomers (M-1) and (M-2), and 0 parts to 25 parts by mass of (M-4) a vinyl monomer other than the monomers (M-1), (M-2) and (M-3) (with the proviso that the total amount of the contents of (M-1), (M-2), (M-3) and (M-4) is 100 parts by mass); ring-opened epoxy group obtainable by ring-opening of epoxy group that is contained in the copolymer; and ligand that is bound to the porous particle.
摘要:
Provided is a filler for affinity chromatography which is useful for protein purification and contains porous particles that have a high dynamic binding capacity for proteins and excellent pressure characteristics. The filler for affinity chromatography of the present invention is characterized in that it includes a porous particle consisting of a polymer of vinyl monomer including a cross-linkable vinyl monomer that contains hydroxyl group but does not contain epoxy group and an epoxy group-containing non-cross-linkable vinyl monomer, or a cross-linkable vinyl monomer that contains hydroxyl group and epoxy group, ligands bound to the porous particle, and ring-opened epoxy groups.
摘要:
A non-specific adsorption inhibitor includes a water-soluble polymer obtained by polymerizing a monomer unit that includes a monomer (A) that forms a polymer that has a lower critical solution temperature (LCST) of 80° C. or less in an aqueous solution under normal pressure when subjected to homopolymerization, and a monomer (B) that forms a polymer that does not have the LCST in an aqueous solution under normal pressure when subjected to homopolymerization.
摘要:
A method for producing a non-specific adsorption inhibitor includes reacting (A) a tosylated compound of polyoxyethylene monomethyl ether with (B) a polyamine having either an amino group or imino group (—NH—), or both, in total of 3 to 12.
摘要:
A method for producing magnetic particles includes forming a hydrophobic first polymer layer on the surface of a mother particle containing superparamagnetic particles, forming a second polymer layer having glycidyl groups at least on its surface on the first polymer layer, and introducing a polar group containing one or more of at least one atom selected from the group consisting of an oxygen atom, a nitrogen atom, and a sulfur atom by chemically modifying the glycidyl groups.
摘要:
Magnetic particles comprising a group shown by the following formula (1): wherein R1 and R2 individually represent a hydroxyl group, a group shown by the following formula (2), or a group shown by the following formula (3), provided that R1 and R2 are not both hydrogen atoms, wherein R3 represents an a linear, branched, or cyclic alkylene group having 2 to 6 carbon atoms or an arylene group, and wherein R4 is a hydrogen atom or an alkyl group.
摘要:
A protein stabilizing agent comprising a copolymer comprising: a repeating unit (A) represented by the following formula (1) and a repeating unit (B) represented by the following formula (2): wherein R1, R2, R3 and R4 are defined in the description.
摘要:
A hollow particles-containing liquid composition which comprises:(A) crosslinked hollow particles having particle diameters of 0.4 μm or more and containing 40 mass % or more of a toluene insoluble, in an amount of 5 to 70 mass %,(B) a reactive diluent (B1) and/or an organic solvent (B2) in an amount of 95 to 30 mass % [the total mass of the crosslinked hollow particles (A) and the reactive diluent (B1) and/or the organic solvent (B2) is 100 mass %], and(C) a dispersing agent in an amount of 0 to 30 parts by mass relative to 100 parts by mass of the total of the crosslinked hollow particles (A) and the reactive diluent (B1) and/or the organic solvent (B2). There are provided a hollow particles-containing liquid composition which is low in foreign matter content and can give a high haze, a process for production thereof, and an optical article.
摘要:
Disclosed are hollow polymer particles composed of a crosslinked polymer having a comparatively small particle diameter and a narrow particle diameter distribution, an aqueous dispersion of the particles, and an ink having good flying property. The hollow polymer particles are obtained by emulsion-polymerizing a crosslinkable polymerizable monomer composition absorbed in seed particles and containing a crosslinkable monomer component and a hydrophilic monomer component, wherein the seed particles are particles of a polymer having a weight average molecular weight of 500 to 15,000, and obtained by emulsion-polymerizing 100 parts by mass of a non-crosslinkable polymerizable monomer in the presence of 0.01 to 5 parts by mass of a chain transfer agent composed of at least one compound selected from the group consisting of α-methylstyrene dimer, thiuram disulfides and terpene hydrocarbons. The ink contains the hollow polymer particles.
摘要:
An object of the present invention is to provide cationic hollow crosslinked polymer particles that maintain a cationic property over a wide pH range, has adequate strength, and is favorable for use in filled paper, pigments for coating paper, additives for paints, fillers for resins, rubbers, and the like. Another object of the present invention is to provide a method of producing the abovementioned cationic hollow crosslinked polymer particles with excellent characteristics in a stable manner. The hollow crosslinked polymer particles of the present invention are characterized in that (I) the zeta potential as measured in an aqueous medium of pH 2 to 9 is in the range of +5 to +100 mV, (II) the volume hollowness is in the range of 1 to 80%, and (III) the average particle diameter is in the range of 0.03 to 10 &mgr;m. This hollow crosslinked polymer particles are produced by a method that (a) 1 to 99.99 weight % of a crosslinking monomer, (b) 0.01 to 15 weight % of a cationic monomer, and (c) 0 to 98.99 weight % of a copolymerizable monomer that is non-crosslinking and nonionic (the total amount of the monomers being 100 weight %) are polymerized under the presence of polymer particles that are swellable by at least one of the above monomers. This hollow crosslinked cationic polymer particles are utilized for paint composition, cationic electrodeposition paint composition, resin composition, filled paper, paper coating composition, and coated paper, and the like.