Nitto Boseki Co.

Fukushima-shi, Japan

Nitto Boseki Co.

Fukushima-shi, Japan

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The purpose of the present invention is to provide a method for separating and concentrating a target substance as an alternative to existing cationic polymers, and a kit for implementing this method.


Patent
Nitto Boseki Co. | Date: 2017-02-01

Provided are: a graft copolymer which can be safely and stably produced with simple operation, while maintaining the characteristics of an amine, and which is lower in the introduction cost than conventional graft copolymers; and a method for producing the graft copolymer. A polyamine graft polymer that is obtained by polymerizing a polyamine derivative, which is obtained by reacting a polymer compound (a) having at least one amino group with a compound (b) having at least one epoxy group, with an ethylenically unsaturated monomer (c). A method for producing a polyamine graft polymer, which comprises a step for adding, for polymerization, an ethylenically unsaturated monomer (c) and a radical polymerization initiator to a polyamine derivative, which is obtained by reacting a polymer compound (a) having at least one amino group with a compound (b) having at least one epoxy group, in a polar solvent.


Patent
Nitto Boseki Co. | Date: 2017-03-29

Provided is a glass composition for glass fiber allowing spinning to be stably performed without mixing of red foreign substances into glass fibers. The glass composition for glass fiber includes, in relation to the total amount thereof, SiO_(2) in a content falling within a range from 57.0 to 60.0% by mass, Al_(2)O_(3) in a content falling within a range from 17.5 to 20.0% by mass, MgO in a content falling within a range from 8.5 to 12.0% by mass, CaO in a content falling within a range from 10.0 to 13.0% by mass and B_(2)O_(3) in a content falling within a range from 0.5 to 1.5% by mass, the total content of SiO_(2), Al_(2)O_(3), MgO and CaO being 98.0% by mass or more.


Pentameric CRP is produced at a high efficiency by transferring DNA, which encodes monomeric CRP, into a silkworm to thereby construct a transgenic silkworm and then collecting and purifying pentameric CRP that is produced by the transgenic silkworm constructed above.


The purpose of the present invention is to provide a monoclonal antibody that is useful in specifically assaying tartrate resistant acid phosphatase 5b (TRACP-5b). A hybridoma producing a monoclonal antibody against TRACP-5b, said monoclonal antibody showing higher reactivity with TRACP-5b than with tartrate resistant acid phosphatase 5a (TRACP-5a) and, therefore, being specific to TRACP-5b, is obtained by cell fusion using, as an antigen, human recombinant TRACP-5b purified from silkworm silk gland. By using this monoclonal antibody, TRACP-5b in a specimen can be highly sensitively and specifically detected.


Patent
Nitto Boseki Co. | Date: 2016-10-05

Provided is a glass fiber fabric-resin composition laminate which is thinner than the conventional glass fiber fabric-resin composition laminates and has a strength equal to or higher than that of the conventional laminates. In the glass fiber fabric-resin composition laminate 1, one or more layers of first glass fiber fabrics 2 to 5 have a total thickness of 50 to 100% with respect to the overall thickness. The glass composition of the first glass fiber fabrics 2 to 5 is 57 to 70 mass% of SiO_(2), 18 to 30 mass% of Al_(2)O_(3), 5 to 15 mass% of MgO, 0 to 12 mass% of CaO, 0 to 1 mass% of at least one of Li_(2)O, Na_(2)O, and K_(2)O, 0 to 1 mass% of TiO_(2), and 0 to 1 mass% of B_(2)O_(3).


Patent
Nitto Boseki Co. and Nitto Glasstex Co. | Date: 2016-12-07

Provided is a colored glass fiber for use as a reinforced fiber, allowing a molded product to have high strength and good appearance. A glass fiber is surface treated with a surface treatment agent including a first silane coupling agent, a coating agent and a surfactant, colored with a coloring agent including a second silane coupling agent and a pigment, and water-washed, so that the colored glass fiber is obtained. The treatment is performed to have a sum of the weight of a surface treatment layer and a colored layer of 0.25 to 1.70 wt% with respect to the weight of the glass fiber. Due to a coating formed from the surface treatment agent on the glass surface, the colored glass fiber is not scratched by the pigment contained in the coloring agent. Consequently, the mold product doesnt degrade the strength and has good appearance due to the coloring.


The present invention relates to cellulose nanofibers that have good dispersibility in water and can be contained in a water-soluble polymer at high concentration, and to a method for obtaining the cellulose nanofibers. The present invention further relates to a fiber reinforced composite material using the cellulose nanofibers. Cellulose nanofibers having an average degree of polymerization of 100 or more and 800 or less and an aspect ratio of 150 or more and 2000 or less are produced by subjecting unmodified cellulose to an enzyme and/or acid treatment, and to a mechanical shearing treatment. The cellulose nanofibers have good dispersibility and can be dispersed in a water-soluble polymer at high concentration, and therefore a fiber reinforced composite material having high strength can be obtained.


An autoantibody against Ku86 can be measured by reacting the autoantibody contained in a sample with a Ku86 antigen (which serves as a reagent) to produce an immune complex of the autoantibody and the Ku86 antigen and measuring the immune complex using a labeled anti-human immunoglobulin antibody. The measurement of the autoantibody enables the determination of primary hepatocellular carcinoma.


The present invention provides a resin-coated flame-retardant fiber yarn which allows a resin-coated flame-retardant fiber woven fabric formed by weaving the yarn to have excellent thermal insulation as well as a quiet color tone and to maintain a fine appearance thereof for a long period of time. The resin-coated flame-retardant fiber yarn 1 comprises a resin coating layer 3 coating a flame-retardant fiber yarn 2. The resin coating layer 3 comprises titanium dioxide particles (A) and composite metal oxide particles (B). A total content of the titanium dioxide particles and the composite metal oxide particles (A+B) is in a range of 1.5-13.0 mass% based on the total mass of the resin-coated flame-retardant fiber yarn 1, and a mass ratio value of the first titanium dioxide particles to the composite metal oxide particles (A/B) is in a range of 5-70.

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