Nec Corporation

Other

Sumitomo Bakelite Company Limited

Kao Corporation

Unitika Ltd.

Masatoshi Iji

Shukichi Tanaka

Yukihiro Kiuchi

Kiyohiko Toyama

Kazuhiko Inoue

Shin Serizawa

Midori Shimura

Sungil Moon

Sadahiko Yokoyama

Tsunenori Yanagisawa

Hiroyuki Kai

Makoto Soyama

Naoki Morishita

Kunihiko Ishihara

Isao Katayama

Ichiro Sato

Katsushi Terajima

Yasuo Matsui

Ken Oota

Tadashi Shinomiya

Toshie Miyamoto

Mina Shimizu

Syukichi Tanaka

Akira Yamamoto

Masaaki Yamaya

Kenji Yamamoto

Shinichi Iwasaki

Akira Takenaka

Kazue Ueda

Satoru Moritomi

Hiroaki Kishimoto

Yoshiteru Kobayashi

Masao Shimoda

Hiroo Kamikawa

Yohei Kabashima

Eiichi Mori

Yoshitaka Kyogoku

Tokukazu Kiji

Norio Fukawa

Masahiro Ishibashi

Yutaro Shimode

Satoshi Umeyama

Yuji Ikuta

Kazuhiko Inou

Midori Yamashiro

A cellulose derivative having a long-chain organic group having 5 or more carbon atoms and a short-chain organic group having 4 or less carbon atoms which are introduced by use of hydroxy groups of a cellulose, and including a crystal structure derived from a cellulose derivative portion to which the short-chain organic group is linked, wherein an average number of hydroxy groups per glucose unit is of 1.0 or less.

Cellulose derivative and resin composition for molding

A cellulose resin composition comprising a cellulose derivative and a lubricant, wherein the cellulose derivative is an acylated cellulose obtained by substituting at least a part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms, and the content of the lubricant is in the range of 0.1 to 10% by mass. A cellulose resin composition capable of forming a molded body having a high-quality appearance and scratch resistance is provided.

Cellulose resin composition, molded body and product using same

A cellulose resin composition comprising a cellulose derivative (A) and a lubricant (B), wherein the cellulose derivative (A) is a cellulose derivative obtained by substituting at least a part of hydrogen atoms of hydroxyl groups of a cellulose with a short-chain organic group having 2 to 4 carbon atoms and a long-chain organic group having 8 to 30 carbon atoms with specific degrees of substitution; the lubricant (B) is at least one selected from the group consisting of a urea compound (B1) having a urea group (&#x2014;NH&#x2014;C(&#x2550;O)&#x2014;NH&#x2014;) and an acyclic aliphatic group having 6 to 33 carbon atoms, an amide compound (B2) having an amide group (&#x2014;C(&#x2550;O)&#x2014;NH&#x2014;) and an acyclic aliphatic group having 6 to 33 carbon atoms, a fatty acid metal salt (B3), and a silicone-based lubricant (B4); and a content of the lubricant (B) is in a range of 0.1 to 10% by mass. A cellulose resin composition capable of forming a molded body having a high-quality appearance and scratch resistance is provided.

Cellulose resin composition, molded body and product using same, and a method for producing cellulose resin composition

A method for producing a cellulose derivative, including reacting a mixed acid anhydride having two particular types of acyl groups with cellulose in the presence of a base catalyst in an organic solvent having an electron pair-donating property to form a cellulose derivative with the two types of acyl groups derived from the mixed acid anhydride, the acyl groups being introduced at hydroxy groups in the cellulose.

Method for producing cellulose derivative, and cellulose derivative

A cellulose resin composition containing a cellulose resin (A) and a high refractive-index organic material (B), in which the cellulose resin (A) is a cellulose derivative obtained by substituting at least part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms and a long-chain organic group having 7 or more carbon atoms, and the mass fraction (B/A) of the high refractive-index organic material (B) to the cellulose resin (A) falls within the range of 10/90 to 70/30.

A cellulose derivative obtained by substituting at least part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms, a long-chain organic group having 7 or more carbon atoms and a high refractive-index organic group.

Cellulose derivative, cellulose resin composition, molded body and product using same

To provide a cellulose derivative excellent in thermoplasticity, water resistance and strength (elastic modulus, impact strength), a cellulose derivative, which is obtained by introducing a short-chain organic group (acetyl group), a medium-chain organic group having 3 to 5 carbon atoms and a long-chain organic group having 6 to 30 carbon atoms at the following substitution degrees DSs into a cellulose, is used: Short-chain organic group: 0.7&#x2264;DS&#x2264;1.5; Medium-chain organic group: 0.5&#x2264;DS&#x2264;2.0; Long-chain organic group: 0.1&#x2264;DS&#x3c;0.5; and 2.4&#x2264;DS+DS+DS&#x2264;3.

Cellulose derivative and use thereof

Resin compositions according to exemplary embodiments of the present invention are first compositions containing a polylactic acid resin, an aliphatic polyester resin, a surface-treated metal hydrate, and a carbodiimide compound, or second compositions containing a polysiloxane-mixed polyester resin, a phosphorus-containing flame retardant, a metal hydrate and a fluorine-containing polymer in specific ratios.

Polylactic acid resin composition and polyester resin composition, and method for producing the same and molded body thereof

A cellulose resin composition comprising a cellulose resin, a high refractive-index organic material and a carbon black, in which the cellulose resin is an acylated cellulose obtained by substituting at least part of hydrogen atoms of hydroxy groups of a cellulose with an acyl group having 2 to 4 carbon atoms, the carbon black is an acidic carbon black, the mass fraction (B/A) of the high refractive-index organic material (B) to the cellulose resin (A) falls within the range of 10/90 to 70/30, and the content of the carbon black (C) relative to the total of the cellulose resin composition falls within the range of 0.05 to 10% by mass.

A cellulose resin formed by substituting hydrogen atoms of hydroxy groups of a cellulose with a long-chain component being a linear saturated aliphatic acyl group having 14 or more carbon atoms and a short-chain component being an acyl group having 2 or 3 carbon atoms, in which a degree of substitution with the long-chain component (DS) and a degree of substitution with the short-chain component (DS) satisfy conditional expressions (1) and (2) shown below:DS+DS&#x2265;2.1&#x2003;&#x2003;(1)4&#x2264;DS/DS&#x2264;12&#x2003;&#x2003;(2).

Cellulose resin, material for molding, molded body and process for producing cellulose resin

A process for producing a cellulose derivative, comprising: a first step including reacting a cellulose and a first reactant comprising a long-chain reactant for reacting with a hydroxy group of the cellulose to introduce a long-chain organic group having 5 or more carbon atoms, in a solid-liquid heterogeneous system, to form a cellulose derivative in a swollen state, the cellulose derivative having the long-chain organic group having 5 or more carbon atoms introduced therein and having a part of hydroxy groups of the cellulose remained, and performing solid-liquid separation to obtain the cellulose derivative as an intermediate; and a second step including reacting the intermediate cellulose derivative and a second reactant comprising a short-chain reactant for reacting with a remaining hydroxy group of the intermediate cellulose derivative to introduce a short-chain organic group having 4 or less carbon atoms to form a final cellulose derivative having the short-chain organic group having 4 or less carbon atoms introduced therein.

Process for producing cellulose derivative and cellulose derivative

Disclosed is a polylactic acid resin composition having excellent bleed resistance and molecular weight retention ratio. A polylactic acid resin molded body is also disclosed. The polylactic acid resin composition contains a polylactic acid resin (a), a metal hydrate (b) having an alkali metal-containing substance content of not more than 0.2% by mass, and a phosphazene derivative (c). The polylactic acid resin molded body is obtained by molding the polylactic acid resin composition. Specifically, a polylactic acid molded body can be produced by filling a melt of the polylactic acid resin composition into a mold at a temperature in the range from glass transition temperature of said polylactic acid resin (a) to 110&#xb0; C. and molding the melt therein.

Polylactic acid resin composition and polylactic acid resin molded body

A cellulose resin produced by binding cardanol or a derivative thereof to cellulose or a derivative thereof with the use of a cellulose hydroxy group of the cellulose or a derivative thereof and the phenolic hydroxy group of the cardanol or a derivative thereof.

Cellulose resin and method for producing the same

A cellulose resin composition containing a cellulose resin produced by binding a cardanol or a derivative thereof to cellulose or a derivative thereof, and a cardanol-modified silicone compound produced by binding cardanol or a derivative thereof to a silicone compound.

Cellulose resin composition

A cellulose resin produced by binding a hydrogenated cardanol containing 3-pentadecylcyclohexanol, and cellulose or a derivative thereof through the reaction between a hydroxy group of the hydrogenated cardanol, a hydroxy group of the cellulose or a derivative thereof and isocyanate groups of a diisocyanate compound.

Cellulose resin and process for producing the same

Growing community of inventors

Tokyo, Japan

Masatoshi Iji