A biodegradable resin composition containing a biodegradable resin and a cellulose having a crystallinity of less than 50%; and a biodegradable resin molded article wherein the biodegradable resin composition as defined above is molded. The biodegradable resin composition can be suitably used for various industrial applications, such as daily sundries, household electric appliance parts, and automobile parts.

Biodegradable Resin Composition

PROBLEM TO BE SOLVED: To provide a powdery cellulose having excellent powder fluidity without damaging the quality possessed by a natural cellulose by using the natural cellulose as a starting material; and to provide a method for producing the powdery cellulose. SOLUTION: The powdery cellulose having ≥50% crystallinity of type I cellulose, ≥500 average polymerization degree, ≤20 wt.% proportion of 100 mesh-impassable component and ≥0.15 g/mL bulk density is produced by using a cutting type mill singly, or the cutting type mill and an impact mill and/or a pneumatic mill. COPYRIGHT: (C)2004,JPO

Powdery cellulose and method for producing the same

PROBLEM TO BE SOLVED: To provide a material composition formulated with crystalline cellulose fine powders combining excellent water-absorbing and oil-absorbing properties and viscosity. SOLUTION: The crystalline cellulose fine powders are rod-shaped particles with an average diameter of 5 to 20 micrometers at a rate of less than 5 mass%, and with major to minor diameter ratios of 5 or more. COPYRIGHT: (C)2005,JPO&NCIPI

Crystalline cellulose fine powder

PROBLEM TO BE SOLVED: To provide an antibacterial composition having excellent initial antibacterial properties and sustainability of the antibacterial properties, capable of dealing with many kinds of bacteria, and having no problem in safety; and to provide an antibacterial resin molded product containing the antibacterial composition. SOLUTION: The antibacterial composition contains an organic antibacterial agent and an inorganic antibacterial agent. Zirconium phosphate carrying silver or copper can be used as the inorganic antibacterial agent, and 2-mercaptopyridin-N-oxide sodium salt, carbendazim (methyl 1H-benzimidazol-2-ylcarbamate), and thiabendazole (2-(4-thiazolyl)-1H-benzimidazole) can be used as the organic antibacterial agent. These components do not contain a halogen to make the antibacterial agent halogen-free. The antibacterial composition can be applied to the antibacterial resin molded product by being molded with a resin material or being coated with a coating material on a resin molded product. COPYRIGHT: (C)2006,JPO&NCIPI

Antibacterial composition, antibacterial resin molded product, solution containing antibacterial composition, detergent, tatami mat (mat made of rush for japanese life) facing, and tatami mat

A modified powder which comprises a silk powder having an average particle diameter of 10 μm or less, an oil absorption of 130 ml/100 g or less, and a particle diameter by the evaluation of dispersion degree with the particle gauge according to JIS K5400 of 80 μm or less, or a polysaccharide powder having an average particle diameter of 10 μm or less, an ink viscosity of less than 15 Pa s or an oil absorption of 85 ml/100 g or less; and a method for producing the above modified powder, which comprises a first pulverization step of pulverizing a raw modified material by the use of a dry mechanical pulverization means such as a ball mill, to form a pulverized material, and a second pulverization step of pulverizing the resultant pulverized material into a fine powder having an average particle diameter of 10 μm or less with a jet mill, wherein the time for the pulverization treatment in the first pulverization step is 40 hr or more.

Modified powder, fluid composition containing said modified powder, formed article, and method for producing modified powder

PROBLEM TO BE SOLVED: To impart shape and size fit for a modifying material to an org. substance to be pulverized without deteriorating characteristics peculiar to the stock by pulverizing the org. substance with a rolling ball mill, etc., and further pulverizing it with a jet mill. SOLUTION: A polysaccharide such as cellulose or chitin as an org. substance to be pulverized is pulverized to about 20μm average particle diameter with a rolling ball mill, a tube mill, a rod mill or a hammer mill. The pulverized substance is further pulverized to about <=10μm average particle diameter with a jet mill. The org. substance is pulverized to fine particles in two stages and the objective org. powder whose size is fit for utilization as a modifying material is easily obtd.

Production of organic powder and organic powder

PROBLEM TO BE SOLVED: To provide a wound covering material which can be applied even to a wet therapy while retaining the good properties of an eggshell film by using an eggshell film component. SOLUTION: The wound covering material is made of the fiber assembly containing the eggshell film component. The fiber assembly is manufactured by spinning by an electrospinning method by using a solution containing the eggshell film component. Consequently, the fiber assembly is modeled after a natural eggshell film component. The wound covering material made of the fiber aggregate has a sufficient air permeability, well adheres to and seals human skin tissue. Consequently, the material is suitable as a wet therapy material. COPYRIGHT: (C)2009,JPO&INPIT

Wound covering material

PROBLEM TO BE SOLVED: To obtain an antimicrobial composition that efficiently exhibits an antimicrobial action on many kinds of microorganisms and has no influence on the human body and the environment and an antimicrobial molding containing the antimicrobial composition. SOLUTION: The antimicrobial composition comprises two kinds selected only from imidazole-based organic antimicrobial agents and an inorganic antimicrobial agent. 2-(4-Thiazolyl)-1H-benzimidazole and methyl 2-benzimidazolecarbamate are used as the organic antimicrobial agents and silver-supporting zirconium phosphate and zinc oxide are used as inorganic antimicrobial agents. The antimicrobial composition is mixed with a resin material to form a sheetlike antimicrobial resin sheet. A remarkably wide antimicrobial spectrum is exhibited even at a low MIC (Minimum Inhibitory Concentration) value by the antimicrobial actions of the two kinds of imidazole-based organic antimicrobial agents themselves and the inorganic antimicrobial agent itself and the their synergistic effects. COPYRIGHT: (C)2007,JPO&INPIT

Antimicrobial composition, antimicrobial molding, solution containing antimicrobial composition, detergent and straw mat used as surface of tatami mat

PROBLEM TO BE SOLVED: To provide a coating agent for signboards, having antibacterial activity sufficiently durable for use with even an LED sign board which is easy to generate mold owing to low temperature and high humidity in the sign board because of a smaller heat release value than that of a conventional fluorescent light, a neon sign, or the like. SOLUTION: The coating material for signboards includes an antibacterial agent and a resin, wherein the antibacterial agent comprises at least one inorganic antibacterial agent selected from a silver antibacterial agent, and zinc oxide, and at least two organic antibacterial agents selected form imidazole antibacterial agents. COPYRIGHT: (C)2010,JPO&INPIT

伸夫草本

Papers

Production of organic powder and organic powder

Antibacterial composition, antibacterial resin molded product, solution containing antibacterial composition, detergent, tatami mat (mat made of rush for japanese life) facing, and tatami mat

Wound covering material

Antimicrobial composition, antimicrobial molding, solution containing antimicrobial composition, detergent and straw mat used as surface of tatami mat

Coating agent for signboard

伸夫 草本

Papers

Production of organic powder and organic powder

Antibacterial composition, antibacterial resin molded product, solution containing antibacterial composition, detergent, tatami mat (mat made of rush for japanese life) facing, and tatami mat

Wound covering material

Antimicrobial composition, antimicrobial molding, solution containing antimicrobial composition, detergent and straw mat used as surface of tatami mat

Coating agent for signboard

伸夫草本