公开(公告)号：US11505681B2

公开(公告)日：2022-11-22

申请号：US16772580

申请日：2018-12-17

Applicant: NEC CORPORATION

Inventor： Kiyohiko Toyama ,  Mina Shimizu ,  Masatoshi Iji ,  Midori Shimura ,  Shukichi Tanaka ,  Toshie Miyamoto

IPC: C08L1/10 ,  C08K3/04 ,  C08K5/098

Abstract: 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.

公开(公告)号：US11434350B2

公开(公告)日：2022-09-06

申请号：US16772422

申请日：2018-12-17

Applicant: NEC CORPORATION

Inventor： Midori Shimura ,  Shukichi Tanaka ,  Kiyohiko Toyama ,  Masatoshi Iji ,  Mina Shimizu ,  Toshie Miyamoto

IPC: C08L1/14 ,  C08G18/71 ,  C08K3/04 ,  C08K3/36 ,  C08K5/098 ,  C08K5/20 ,  C08K5/21 ,  C08L1/28 ,  C08L83/04

Abstract: 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 (—NH—C(═O)—NH—) and an acyclic aliphatic group having 6 to 33 carbon atoms, an amide compound (B2) having an amide group (—C(═O)—NH—) 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.

公开(公告)号：US10982009B2

公开(公告)日：2021-04-20

申请号：US15766116

申请日：2016-08-29

Applicant: NEC CORPORATION

Inventor： Midori Shimura ,  Shukichi Tanaka ,  Kiyohiko Toyama ,  Masatoshi Iji

IPC: C08B1/00 ,  C08B3/16 ,  C08L1/14 ,  C08B1/02 ,  C08L1/10

Abstract: 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≤DSSH≤1.5; Medium-chain organic group: 0.5≤DSME≤2.0; Long-chain organic group: 0.1≤DSLO

公开(公告)号：US09382335B2

公开(公告)日：2016-07-05

申请号：US14404247

申请日：2013-05-31

Applicant: NEC Corporation

Inventor： Kiyohiko Toyama ,  Masatoshi Iji ,  Shukichi Tanaka

IPC: C08B3/10 ,  C08B3/16 ,  C08B3/22 ,  C08L1/12 ,  C08L1/14 ,  C08B3/06 ,  C08B3/00 ,  C08B3/20 ,  C08L1/10 ,  C08B3/08

CPC classification number: C08B3/06 ,  C08B3/00 ,  C08B3/08 ,  C08B3/10 ,  C08B3/16 ,  C08B3/20 ,  C08B3/22 ,  C08L1/10 ,  C08L1/12 ,  C08L1/14

Abstract: A process for producing a cellulose derivative, including reacting a reactant and a cellulose or a derivative thereof in a solid-liquid heterogeneous system to form a cellulose derivative containing a long-chain organic group having 5 or more carbon atoms introduced therein, in a swollen state, and performing solid-liquid separation to obtain the cellulose derivative containing a long-chain organic group introduced therein.

Abstract translation: 一种生产纤维素衍生物的方法，包括使反应物和纤维素或其衍生物在固 - 液异相体系中反应，形成含有引入其中具有5个或更多碳原子的长链有机基团的纤维素衍生物 状态，进行固液分离，得到含有长链有机基团的纤维素衍生物。

公开(公告)号：US10941282B2

公开(公告)日：2021-03-09

申请号：US16309977

申请日：2017-06-15

Applicant: NEC CORPORATION ,  Yutaro Shimode

Inventor： Kiyohiko Toyama ,  Masatoshi Iji ,  Kunihiko Ishihara ,  Yutaro Shimode

IPC: C08L1/14 ,  C08B3/16 ,  C08K3/04 ,  C08K5/521 ,  C08K13/02 ,  C08L25/12

Abstract: 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.

公开(公告)号：US10005849B2

公开(公告)日：2018-06-26

申请号：US15030936

申请日：2014-10-07

Applicant: NEC Corporation

Inventor： Kiyohiko Toyama ,  Masatoshi Iji ,  Shukichi Tanaka

IPC: C08B3/16 ,  C08L1/14 ,  C08L67/02

CPC classification number: C08B3/16 ,  C08L1/14 ,  C08L67/02

Abstract: 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.

公开(公告)号：US11591410B2

公开(公告)日：2023-02-28

申请号：US15521965

申请日：2015-04-24

Applicant: NEC Corporation

Inventor： Kiyohiko Toyama ,  Masatoshi Iji ,  Shukichi Tanaka

IPC: C08B3/16 ,  C08L1/14

Abstract: 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.

公开(公告)号：US11149133B2

公开(公告)日：2021-10-19

申请号：US16310003

申请日：2017-06-15

Applicant: NEC CORPORATION

Inventor： Kiyohiko Toyama ,  Masatoshi Iji ,  Kunihiko Ishihara

IPC: C08L1/10 ,  C08K3/04 ,  C08K5/06 ,  C08B3/16 ,  C08K5/523 ,  C08L1/14 ,  C08K5/00 ,  C08K5/01 ,  C08K5/521 ,  C08K5/3492 ,  C08K5/07 ,  C08K5/37

Abstract: 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.

公开(公告)号：US10961388B2

公开(公告)日：2021-03-30

申请号：US15780760

申请日：2016-12-02

Applicant: NEC CORPORATION

Inventor： Makoto Soyama ,  Masatoshi Iji ,  Shukichi Tanaka ,  Kiyohiko Toyama

IPC: C08L67/04 ,  C08G77/18 ,  C08G77/26 ,  C08G77/44 ,  C08G77/445 ,  C08G63/695 ,  C08L67/00 ,  C08K7/14 ,  C08K9/06 ,  C08K5/29 ,  C08L101/16

Abstract: 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.

公开(公告)号：US11161917B2

公开(公告)日：2021-11-02

申请号：US16159962

申请日：2018-10-15

Applicant: NEC Corporation

Inventor： Shukichi Tanaka ,  Kiyohiko Toyama ,  Masatoshi Iji

IPC: C08B3/16 ,  C08L1/14 ,  C08B1/02

Abstract: 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.