公开(公告)号：US20210404099A1

公开(公告)日：2021-12-30

申请号：US17290926

申请日：2019-11-06

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Mari YABE ,  Takumi SUGIUCHI ,  Masaki OKANO ,  Yutaka MINAMI

IPC: D04H3/147 ,  D04H3/007 ,  D04H3/018 ,  D01F8/06 ,  C08L23/12 ,  C08L23/04

Abstract: The present invention relates to a nonwoven fabric including a conjugated fiber containing 40% by mass or more and 80% by mass or less of a propylene homopolymer (A) having a melting point (Tm-D) measured by a differential scanning calorimeter (DSC) of higher than 120° C., 4% by mass or more and 40% by mass or less of a polypropylene-based resin (B) having a melting point (Tm-D) measured by a differential scanning calorimeter (DSC) of 120° C. or lower, and 10% by mass or more and 55% by mass or less of a polyethylene-based resin (C), wherein the nonwoven fabric has a texture uniformity of 2.1 or more and 3.0 or less and a bulkiness of 450 μm or more.

公开(公告)号：US20180215878A1

公开(公告)日：2018-08-02

申请号：US15762996

申请日：2016-09-23

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Masaki OKANO ,  Yoshihito KOYAMA ,  Shinobu YAMAO

IPC: C08H7/00 ,  C08L97/00

CPC classification number: C08H6/00 ,  C08G8/20 ,  C08H8/00 ,  C08L97/005 ,  C08L101/00

Abstract: Provided is a method of producing a purified lignin, including: treating a plant biomass in a first solvent mixture formed of water and a first organic solvent under specific conditions; subjecting a solid fraction insoluble in a first solution mixture and the first solution mixture to solid-liquid separation after the treatment; mixing the first solution mixture from which the insoluble solid fraction has been separated, and a second organic solvent excluding the first organic solvent and having a dipole moment of 0.25 d or less to provide a second solution mixture; and subjecting a solid fraction insoluble in the second solution mixture to solid-liquid separation to extract the purified lignin in a liquid phase of the second solution mixture.

公开(公告)号：US20230303813A1

公开(公告)日：2023-09-28

申请号：US18041231

申请日：2021-08-25

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Nozomu FUJII ,  Masaki OKANO ,  Asami KOGA

IPC: C08L23/12 ,  C09J123/12

CPC classification number: C08L23/12 ,  C09J123/12 ,  C08L2205/025

Abstract: A propylene resin composition containing a propylene homopolymer that satisfies conditions (1) to (3) described below, and having a semicrystallization time (t1/2) of 60 seconds or more:



(1) having a melting point (Tm-D) of 120° C. or lower;
(2) having a molecular weight distribution (Mw/Mn) less than 3.0;
(3) having a melt viscosity at 190° C. of 30,000 mPa·s or less.

公开(公告)号：US20190211207A1

公开(公告)日：2019-07-11

申请号：US16330842

申请日：2017-09-04

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Yoshihito KOYAMA ,  Shinobu YAMAO ,  Masaki OKANO

IPC: C08L97/00 ,  C08L61/06 ,  C08H7/00

CPC classification number: C08L97/005 ,  C08H6/00 ,  C08J5/00 ,  C08L61/06 ,  C08L97/00 ,  C08L101/00

Abstract: The method for producing a resin composition of the present invention includes a step of obtaining a lignin-containing solution that contains a solubilized lignin prepared through a treatment of separating lignin in a lignin-containing solution and a solvent, and a step of adding a resin to the lignin-containing solution to thereby obtain a lignin/resin-containing solution. Also, the method for producing a resin composition of the present invention includes a step of mixing the lignin/resin-containing solution with at least one solvent selected from water and a hydrocarbon having a dipole moment of 0.25 d or less. The lignin-containing resin molded article of the present invention uses the resin composition obtained according to the production method of the present invention.