公开(公告)号：US11806414B2

公开(公告)日：2023-11-07

申请号：US17173334

申请日：2021-02-11

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Akiyoshi Kusaka ,  Yoshinao Yamaji ,  Ryosuke Harada

IPC: A61K9/50 ,  A61K8/11 ,  A61K8/25 ,  A61Q19/00 ,  A61K8/02 ,  C01B33/159 ,  G02B1/04 ,  B32B27/18 ,  C09D7/40 ,  A61Q1/00 ,  G02B5/02 ,  B01J13/06 ,  C09D7/65 ,  C09D7/61 ,  A61Q1/12 ,  B01J13/18

CPC classification number: A61K8/11 ,  A61K8/02 ,  A61K8/0279 ,  A61K8/25 ,  A61Q1/00 ,  A61Q1/12 ,  A61Q19/00 ,  B01J13/06 ,  B01J13/185 ,  B32B27/18 ,  C01B33/159 ,  C09D7/40 ,  C09D7/61 ,  C09D7/65 ,  C09D7/68 ,  C09D7/69 ,  G02B1/04 ,  G02B5/02 ,  G02B5/0226 ,  A61K2800/10 ,  A61K2800/412 ,  A61K2800/614 ,  A61K2800/651 ,  A61K2800/654

Abstract: Silica-including microcapsule resin particles including an outer shell constituted of a crosslinked polymer and a cavity partitioned with the outer shell, in which the silica-including microcapsule resin particles contain inside the cavity a porous structure in which silica particles are mutually connected, and have a volume average particle diameter of 0.5 to 100 μm.

公开(公告)号：US20170058116A1

公开(公告)日：2017-03-02

申请号：US15306223

申请日：2015-03-26

Applicant: Sekisui Plastics Co., Ltd.

Inventor： Mayumi Ando ,  Toshiki Takenaka ,  Akiyoshi Kusaka ,  Takashi Goto

IPC: C08L33/12 ,  G02B1/04 ,  C09D133/12 ,  C08L1/28 ,  C09D101/28

CPC classification number: C08L33/12 ,  C08F2/18 ,  C08F212/08 ,  C08F220/14 ,  C08F265/04 ,  C08F265/06 ,  C08G18/6225 ,  C08L1/284 ,  C08L101/00 ,  C08L2205/025 ,  C08L2205/03 ,  C09D7/40 ,  C09D101/284 ,  C09D133/12 ,  C09D175/04 ,  C09D201/00 ,  G02B1/04 ,  C08F2222/1013 ,  C08F2216/1475 ,  C08F2220/286 ,  C08F2/22 ,  C08F230/02 ,  C08L51/003 ,  C08L51/02

Abstract: There are provided a method for producing particles by suspension polymerization which ensures an excellent dispersion stability of the monomer and a simpler washing step, composite particles obtainable by this production method, and use of the composite particles. The method for producing composite particles includes a polymerization step of subjecting a monomer mixture which contains a polymerizable vinyl monomer to aqueous suspension polymerization in a presence of small polymer particles having a volume-average particle size of 20 to 500 nm, with a water-soluble cellulose compound adsorbing on surfaces of the small polymer particles, and thereby obtaining composite particles which contain the small polymer particles and large polymer particles greater than the small polymer particles.

Abstract translation: 提供了通过悬浮聚合制备颗粒的方法，其确保了单体的优异的分散稳定性和更简单的洗涤步骤，通过该制备方法获得的复合颗粒和复合颗粒的使用。 复合粒子的制造方法包括聚合工序，在体积平均粒径为20〜500nm的小聚合物粒子的存在下，使含有聚合性乙烯基单体的单体混合物进行水性悬浮聚合，得到水溶性 纤维素化合物吸附在小聚合物颗粒的表面上，从而获得含有小聚合物颗粒和大于聚合物颗粒的大聚合物颗粒的复合颗粒。

公开(公告)号：US11078338B2

公开(公告)日：2021-08-03

申请号：US16318808

申请日：2016-07-22

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Kaori Kuwagaki ,  Akiyoshi Kusaka

IPC: C08J3/16 ,  A61K8/02 ,  A61K8/85 ,  A61Q19/00 ,  C08G63/06 ,  C08G63/08 ,  C08G63/16 ,  C08J3/11 ,  C09D5/03 ,  C09D167/02 ,  C09D167/04 ,  C08J3/12

Abstract: Generally spherical resin particles formed of a thermoplastic resin, having a sphericity of 0.90 to 1.00, a light scattering index of 0.5 to 1.0 and a linseed oil absorption of 30 to 150 mL/100 g.

公开(公告)号：US12065548B2

公开(公告)日：2024-08-20

申请号：US17347864

申请日：2021-06-15

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Kaori Kuwagaki ,  Akiyoshi Kusaka

IPC: C08J3/16 ,  A61K8/02 ,  A61K8/85 ,  A61Q19/00 ,  C08G63/06 ,  C08G63/08 ,  C08G63/16 ,  C08J3/11 ,  C08J3/12 ,  C09D5/03 ,  C09D167/02 ,  C09D167/04

CPC classification number: C08J3/16 ,  A61K8/025 ,  A61K8/85 ,  A61Q19/00 ,  C08G63/06 ,  C08G63/08 ,  C08G63/16 ,  C08J3/11 ,  C08J3/12 ,  C09D5/031 ,  C09D167/02 ,  C09D167/04 ,  A61K2800/26 ,  C08G2230/00 ,  C08J2367/02 ,  C08J2367/04

Abstract: Generally spherical resin particles formed of a thermoplastic resin, having a sphericity of 0.90 to 1.00, a light scattering index of 0.5 to 1.0 and a linseed oil absorption of 30 to 150 mL/100 g.

公开(公告)号：US11548995B2

公开(公告)日：2023-01-10

申请号：US17106518

申请日：2020-11-30

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Kaori Kuwagaki ,  Akiyoshi Kusaka

IPC: C08J9/28 ,  C08J3/14

Abstract: A manufacturing method for porous resin microparticles comprising steps of: heating a polyester thermoplastic resin having biodegradability to a temperature of 80° C. or higher and 200° C. or lower in a glycol ether solvent to obtain a solution, and cooling the solution to precipitate the polyester thermoplastic resin as porous resin microparticles.

公开(公告)号：US10952938B2

公开(公告)日：2021-03-23

申请号：US16070675

申请日：2017-02-27

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Akiyoshi Kusaka ,  Yoshinao Yamaji ,  Ryosuke Harada

IPC: A61K9/50 ,  A61K8/11 ,  A61K8/25 ,  A61Q19/00 ,  A61K8/02 ,  C01B33/159 ,  G02B1/04 ,  B32B27/18 ,  C09D7/40 ,  A61Q1/00 ,  G02B5/02 ,  B01J13/06 ,  C09D7/65 ,  C09D7/61 ,  A61Q1/12 ,  B01J13/18

Abstract: Silica-including microcapsule resin particles including an outer shell constituted of a crosslinked polymer and a cavity partitioned with the outer shell, in which the silica-including microcapsule resin particles contain inside the cavity a porous structure in which silica particles are mutually connected, and have a volume average particle diameter of 0.5 to 100 μm.

公开(公告)号：US10227456B2

公开(公告)日：2019-03-12

申请号：US15509231

申请日：2015-09-09

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Akiyoshi Kusaka ,  Kaori Kuwagaki ,  Ryosuke Harada

IPC: C08G18/10 ,  C08J3/24 ,  C09D7/40 ,  A61Q1/12 ,  A61K8/81 ,  A61Q19/00 ,  C08F2/18 ,  C08F2/44 ,  C08F290/06 ,  C08F299/06 ,  C09D201/00 ,  C08L55/00 ,  A61K8/06 ,  A61K8/87 ,  A61Q1/02 ,  C08G18/32 ,  C08G18/34 ,  C08G18/44 ,  C08G18/48 ,  C08G18/66 ,  C08G18/73 ,  C08G18/78 ,  C08G18/83 ,  C08K3/36 ,  C09D175/16 ,  C08G18/67 ,  C08G18/80

Abstract: A high-recoverability resin particles having a mean particle size of 1 to 100 μm containing a cross-linked (meth)acrylic acid ester-based resin, wherein the high-recoverability resin particles have a recovery rate of 22% or greater, and a 30% compression strength of 1.5 to 5.0 kgf/mm2.

公开(公告)号：US10174190B2

公开(公告)日：2019-01-08

申请号：US15306223

申请日：2015-03-26

Applicant: Sekisui Plastics Co., Ltd.

Inventor： Mayumi Ando ,  Toshiki Takenaka ,  Akiyoshi Kusaka ,  Takashi Goto

IPC: C08L33/12 ,  C08F2/18 ,  C09D201/00 ,  C08L101/00 ,  C08L1/28 ,  C09D101/28 ,  C09D133/12 ,  G02B1/04 ,  C08G18/62 ,  C08F212/08 ,  C08F220/14 ,  C08F265/04 ,  C08F265/06 ,  C09D175/04 ,  C09D7/40

Abstract: There are provided a method for producing particles by suspension polymerization which ensures an excellent dispersion stability of the monomer and a simpler washing step, composite particles obtainable by this production method, and use of the composite particles. The method for producing composite particles includes a polymerization step of subjecting a monomer mixture which contains a polymerizable vinyl monomer to aqueous suspension polymerization in a presence of small polymer particles having a volume-average particle size of 20 to 500 nm, with a water-soluble cellulose compound adsorbing on surfaces of the small polymer particles, and thereby obtaining composite particles which contain the small polymer particles and large polymer particles greater than the small polymer particles.