Abstract:
The organic polymer particles comprise a carboxyl group and 2,3-dihydroxypropyl group, and the magnetic particles for diagnostics comprise fine magnetic material particles and a polymer part containing a hydrophilic polymer part and a crosslinked polymer part, a dry coating film obtained from a water dispersion thereof having a contact angle with water of 5° to 60°. The process for producing the carboxyl group-containing particles comprises a step of producing an ester bond by reacting a hydroxyl group in organic polymer particles having the hydroxyl group with a carboxylic anhydride. The organic polymer particles comprise a hydroxyl group originating from a 2,3-dihydroxypropyl group and a polyoxyethylene group.
Abstract:
The organic polymer particles comprise a carboxyl group and 2,3-dihydroxypropyl group, and the magnetic particles for diagnostics comprise fine magnetic material particles and a polymer part containing a hydrophilic polymer part and a crosslinked polymer part, a dry coating film obtained from a water dispersion thereof having a contact angle with water of 5° to 60°. The process for producing the carboxyl group-containing particles comprises a step of producing an ester bond by reacting a hydroxyl group in organic polymer particles having the hydroxyl group with a carboxylic anhydride. The organic polymer particles comprise a hydroxyl group originating from a 2,3-dihydroxypropyl group and a polyoxyethylene group.
Abstract:
PROBLEM TO BE SOLVED: To provide a hollow polymer particle for immunodiagnosis having excellent preservation stability and handleability, its manufacturing method, and a reagent for immunodiagnosis. SOLUTION: As for the hollow polymer particle for immunodiagnosis, a biochemical substance is immobilized on the surface, and the hollow rate is 5-80%, and the average particle size is 0.03-5.0 μm. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a particle having a specific surface area more than a smooth surface particle, by making a particle surface layer irregular, and capable of coupling a large amount of antibodies per unit area, and suitable for highly sensitive and wide range measurement in a latex flocculation reaction. SOLUTION: This particle for an immunodiagnostic drug is a particle polymerized with a polymerizable unsaturated compound having a content of divinyl benzene more than 30 wt.%, having 0.02-2μm of particle size, having 20% or less of particle size fluctuation coefficient, and having a specific surface area, found by a nitrogen adsorption method, of at least 1.3 times of that calculated from an average particle size. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide physiologically active substance carrier polymer particles for sensitizing a protein substance such as an antibody, an antigen, an enzyme or a hormone, or a nucleic acid substance such as DNA/RNA, or a physiologically active sugar chain compound (physiologically active substance), to the particle surface by a chemical bonding method. SOLUTION: This physiologically active substance carrier polymer particles are acquired by radical emulsion polymerization of following compounds: (1) a radical polymeric vinyl monomer having a carboxylic acid group, 0.1-20 wt.%; (2) a compound shown by a following general formula (1) and a radical polymeric vinyl monomer having a strong acid group or either of them, 0.05-20 wt.%, the general formula (1): CH2=C(R 1 )CO(OCH2CH2)nOR 2 (In the formula, R1 shows a hydrogen atom or a methyl group, and R2 shows a hydrogen atom, C1-C6 alkyl group, an alkoxy phenyl group, a phenyl group, an acryloyl group or a methacryloyl group, and n shows the number of 2-22.); and (3) a radical polymeric vinyl monomer copolymerizable with a monomer described in (1) or (2), 40-99.8 wt.%. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an aqueous dispersion of polyorganosiloxane/organic polymer composite particles which, when used for a coating material, is excellent in craze resistance in drying and excellent in adhesiveness and resistances to weather, water, and staining; and a production method of the same. SOLUTION: This aqueous dispersion is prepared by causing (A) 1 pt.wt. seed polymer particles having a wt. average mol.wt. of 500-30,000 to absorb (B) 1-50 pts.wt. at least one silane component selected from among organosilanes, hydrolyzates of the organosilanes, and condensates of the organosilanes and (C) 1-100 pts.wt. free-radically polymerizable monomer in an aqueous medium and subjecting the silane component (B) to hydrolysis and condensation conditions and the free-radically polymerizable monomer to free- radical polymerization conditions.