Teijin Limited

Eiichi Kitazono

Hiroaki Kaneko

Takanori Miyoshi

Yoshihiko Sumi

Akimichi Oda

Toshiyuki Miyake

Masaya Ito

Masami Kinoshita

Mizuho Saito

Yukako Fukuhira

Masaru Tanaka

Takeyuki Kawaguchi

Masatsugu Shimomura

Hiroyoshi Minematsu

Katsuhiko Hironaka

Ryuji Nonokawa

Saki Tsuzuki

Chiaki Fukutomi

Keiichi Miyamoto

Hitoshi Hirata

A cellulose derivative which has a suitable elastic modulus and viscosity when it is dissolved in water and is useful as an adhesion barrier. The cellulose derivative has a molecular weight of 5&#xd7;10to 5&#xd7;10and is composed of a repeating unit represented by the following formula (1): wherein R, Rand Rare each independently selected from the group consisting of the following formulas (a), (b), (c) and (d) in predetermined amount: (X in the formula (c) is an alkali metal, and Rand Rin the formula (d) are each independently an alkyl group or alkenyl group having 10 to 28 carbon atoms).

Cellulose derivative

A process for the preparation of a polycarbonate containing a plant-derived component excellent in hue by using a plant-derived anhydrosugar alcohol represented by the following formula (1) or a composition thereof as a raw material: wherein Rto Reach independently represent a group selected from a hydrogen atom, an alkyl group, a cycloalkyl group and an aryl group.

Polycarbonate containing plant-derived component and process for the preparation thereof

A cylindrical body is produced which is composed of a fiber structure with a basis weight of 1-50 g/mand having a diameter of 0.5-50 mm and a bellows-shaped section, wherein the crest-to-crest spacing of the bellows-shaped section is no greater than 2 mm and the crest-to-valley depth of the bellows-shaped section is 0.01-1 mm; collagen is added to the cylindrical body to produce a composite including the cylindrical body and collagen.

Composite of support matrix and collagen, and method for production of support matrix and composite

A hyaluronic acid compound which is a reaction product between hyaluronic acid and a phosphatidyl ethanolamine. This compound has biocompatibility and bio-safety, and can be formed into a hydrogel or molded form having a certain shape. Making use of these properties, it is used to treat a knee joint, prevent the accretion of a tissue after an operation and keep a skin wet.

Hyaluronic acid compound, hydrogel thereof and joint treating material

The invention relates to a honeycomb film made of a biodegradable polymer which has biodegradation properties as an anti-adhesion membrane for preventing adhesion after an operation, is excellent in handling properties, and exhibits a satisfactory adhesion preventive effect stably over a desired period of time, and to a production process of the same. Above all, the invention provides an anti-adhesion membrane of a honeycomb film made of polylactic acid as a biodegradable polymer and a phospholipid and a production process of the same.

Biodegradable film having honeycomb structure

A process for production of a plant-derived component-containing polycarbonate represented by the following formula (3): (wherein R-Reach independently represent a group selected from among hydrogen, alkyl, cycloalkyl and aryl, and n is the number of repeating units), by melt polycondensation using as the starting materials a specified diol, having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography, and a specified carbonic acid diester, having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography.

An object of the present invention is to provide a polycarbonate resin composition which has a high content of biogenic matter and is excellent in heat resistance, heat stability, moldability, hue and transparency. The present invention relates to a resin composition including 0.0005 to 0.5 part by weight of at least one heat stabilizer (component S) selected from the group consisting of phosphorus-based heat stabilizers (PS) and hindered phenol-based heat stabilizers (HS) based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent, and a molded article thereof: 

Polycarbonate resin composition

The object of the invention is to provide plant-derived component-containing polycarbonates with improved color tone, and a process for their production. This object of the invention is achieved by reducing the inorganic impurities in the polymer starting material and by reducing the inorganic impurities in the polymer product.

Plant-derived component-containing polycarbonates and process for their production

The adhesive agent composition of the present invention comprises from 50 to 90% by weight of an acrylic adhesive agent, 2.5 to 50% by weight of a polyhydric alcohol-containing liquid component, and 0.01 to 10% by weight of a salt of a mono- to tri-valence metal of an aliphatic acid that contains a hydrocarbon group of 8 to 18 carbon atoms. The adhesive agent composition shows good adhesion, cohesive force and permeability, and an adhesive drug composition having the above properties can be prepared by adding a drug (medicine, etc.) to the adhesive composition. An adhesive tape excellent in permeability or an adhesive tape preparation excellent in permeability and cutaneous absorption of the drug can be produced by coating a substrate with the adhesive agent composition or adhesive drug composition.

PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND MOISTURE-PERMEABLE PRESSURE-SENSITIVE ADHESIVE TAPE, PRESSURE-SENSITIVE ADHESIVE DRUG COMPOSITION, AND PRESSURE-SENSITIVE ADHESIVE TAPE PREPARATION EACH CONTAINING THE COMPOSITION

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Iwakuni, Japan

Eiichi Kitazono