公开(公告)号：US20240132666A1

公开(公告)日：2024-04-25

申请号：US18278950

申请日：2022-02-22

Applicant: Toray Industries, Inc.

Inventor： Hirokazu Iwata ,  Tomohiko Nakamura ,  Yota Okuno ,  Kei Watanabe ,  Mikiya Nishida ,  Itaru Asano

IPC: C08G69/26 ,  B33Y70/00 ,  C08J3/16

CPC classification number: C08G69/26 ,  B33Y70/00 ,  C08J3/16 ,  C08J2377/06

Abstract: A polymer powder includes a polyamide, wherein a melting point determined in differential scanning calorimetry is 190° C. or higher, a difference between the melting point and a melting onset temperature, which is defined in differential scanning calorimetry as a lowest temperature among temperatures at each of which a first temperature differential value of Heat Flow (W/g) observed between a peak top temperature of an endothermic peak, observed when 10 mg of powder is heated at a rate of 20° C./min from 30° C. in a nitrogen atmosphere, and a temperature point of −50° C. from the peak top, becomes −0.2 (W/g.° C.), is less than 30° C., and a D50 particle size is 1 μm or more and 100 μm or less.

公开(公告)号：US20230034929A1

公开(公告)日：2023-02-02

申请号：US17955169

申请日：2022-09-28

Applicant: Toray Industries, Inc.

Inventor： Itaru Asano

IPC: C08G69/16 ,  C08G69/46

Abstract: A method produces polyamide fine particles by polymerizing a polyamide monomer (A) in the presence of a polymer (B) at a temperature equal to or higher than the crystallization temperature of a polyamide to be obtained, wherein the polyamide monomer (A) and the polymer (B) are homogeneously dissolved at the start of polymerization, and polyamide fine particles are precipitated after the polymerization. Polyamide fine particles have a number average particle size of 0.1 to 100 μm, a sphericity of 90 or more, a particle size distribution index of 3.0 or less, a linseed oil absorption of 100 mL/100 g or less, and a crystallization temperature of 150° C. or more. In particular, a polyamide having a high crystallization temperature includes fine particles having a smooth surface, a narrow particle size distribution, and high sphericity.

公开(公告)号：US11485822B2

公开(公告)日：2022-11-01

申请号：US16606837

申请日：2018-05-07

Applicant: Toray Industries, Inc.

Inventor： Itaru Asano

IPC: C08G69/46 ,  C08G69/16

Abstract: A method produces polyamide fine particles by polymerizing a polyamide monomer (A) in the presence of a polymer (B) at a temperature equal to or higher than the crystallization temperature of a polyamide to be obtained, wherein the polyamide monomer (A) and the polymer (B) are homogeneously dissolved at the start of polymerization, and polyamide fine particles are precipitated after the polymerization. Polyamide fine particles have a number average particle size of 0.1 to 100 μm, a sphericity of 90 or more, a particle size distribution index of 3.0 or less, a linseed oil absorption of 100 mL/100 g or less, and a crystallization temperature of 150° C. or more. In particular, a polyamide having a high crystallization temperature includes fine particles having a smooth surface, a narrow particle size distribution, and high sphericity.

公开(公告)号：US09777130B2

公开(公告)日：2017-10-03

申请号：US15105686

申请日：2014-12-17

Applicant: Toray Industries, Inc.

Inventor： Takahiko Otsubo ,  Itaru Asano ,  Yoko Wakahara ,  Hiroshi Takezaki

IPC: C08G75/00 ,  C08J9/16 ,  C08J3/11 ,  C08J3/16 ,  C08J9/28

CPC classification number: C08J9/16 ,  C08J3/096 ,  C08J3/11 ,  C08J3/16 ,  C08J9/28 ,  C08J2201/0544 ,  C08J2205/044 ,  C08J2205/05 ,  C08J2371/02 ,  C08J2381/04 ,  C08J2381/06 ,  C08J2481/06

Abstract: Polyphenylene sulfide microparticles have a linseed oil absorption amount of 40 to 1,000 mL/100 g and a number average particle diameter of 1 to 200 μm. The porous PPS microparticles have a large specific surface area and therefore promote fusion of particles when molded into various molded bodies by applying thermal energy, thus enabling formation or molding of a coating layer of particles at a lower temperature in a shorter time. The porous PPS microparticles have a porous shape and therefore enable scattering light in multiple directions and suppression of specific reflection of reflected light in a specific direction, thus making it possible to impart shading effect and matte effect when added to a medium.

公开(公告)号：US20150183928A1

公开(公告)日：2015-07-02

申请号：US14659791

申请日：2015-03-17

Applicant: Toray Industries, Inc.

Inventor： Hiroshi Takezaki ,  Hiroshi Kobayashi ,  Makiko Saito ,  Itaru Asano

IPC: C08G63/81

CPC classification number: C08G63/81 ,  A61K8/0241 ,  A61K8/0279 ,  A61K8/85 ,  A61K2800/412 ,  A61Q1/02 ,  A61Q1/10 ,  C08G63/08 ,  C08J3/14 ,  C08J9/26 ,  C08J9/28 ,  C08J2367/04 ,  G03G9/0802 ,  G03G9/0804 ,  G03G9/0821 ,  G03G9/08722 ,  G03G9/08762 ,  G03G9/08775 ,  Y10T428/2982

Abstract: A process of producing polylactic acid-based resin microparticles includes a dissolving step that forms a system, which can cause phase separation into two phases of a solution phase mainly composed of polylactic acid-based resin (A) having an enthalpy of fusion of less than 5 J/g and a solution phase mainly composed of polymer (B) different from polylactic acid-based resin, by dissolving the polylactic acid-based resin (A) and the polymer (B) different from polylactic acid-based resin in an ether-based organic solvent (C); an emulsion-forming step that forms an emulsion by applying a shear force to the system; and a microparticle-forming step that precipitates polylactic acid-based resin microparticles by contacting the emulsion with a poor solvent which has lower solubility of the polylactic acid-based resin (A) than the ether-based organic solvent (C).

Abstract translation: 制造聚乳酸类树脂微粒的方法包括形成系统的溶解步骤，其能够相分离成主相由熔融焓小于等于的聚乳酸类树脂（A）构成的溶液相的两相 5J / g和主要由不同于聚乳酸类树脂的聚合物（B）组成的溶液相，通过将不同于聚乳酸类树脂的聚乳酸类树脂（A）和聚合物（B）溶解在醚中 的有机溶剂（C）; 通过向系统施加剪切力而形成乳液的乳液形成步骤; 以及通过使所述乳液与所述聚乳酸类树脂（A）比所述醚系有机溶剂（C）的溶解性低的不良溶剂接触来使聚乳酸类树脂微粒析出的微粒形成工序。

公开(公告)号：US20150024205A1

公开(公告)日：2015-01-22

申请号：US14375262

申请日：2013-01-18

Applicant: TORAY INDUSTRIES, INC.

Inventor： Itaru Asano ,  Hiroshi Takezaki

IPC: C08J3/14

CPC classification number: C08J3/14 ,  C08G64/00 ,  C08G64/02 ,  C08G64/04 ,  C08G64/16 ,  C08G64/403 ,  C08G64/406 ,  C08J2369/00 ,  Y10T428/2982

Abstract: A method of producing polycarbonate-based polymer microparticles including forming an emulsion in a system in which a polycarbonate-based polymer (A), a polymer (B) different from the polycarbonate-based polymer (A) and an organic solvent (C) are dissolved and mixed together and which causes phase separation into two phases of a solution phase having the poly-carbonate-based polymer (A) as its main component and a solution phase having the polymer (B) different from the polycarbonate-based polymer (a) as its main component, and contacting a poor solvent for the polycarbonate-based polymer (A) with the emulsion at a temperature of 80° C. or higher to thereby precipitate microparticles of the polycarbonate-based polymer (A).

Abstract translation: 制备聚碳酸酯类聚合物微粒的方法包括在不同于聚碳酸酯类聚合物（A）的聚碳酸酯类聚合物（A），聚合物（B）和有机溶剂（C））的体系中形成乳液的方法为 溶解并混合在一起，并使相分离成具有聚碳酸酯类聚合物（A）作为其主要成分的溶液相的两相和具有聚碳酸酯类聚合物（a）的聚合物（B）的溶液相 ）作为其主要成分，并使聚碳酸酯类聚合物（A）的不良溶剂与乳液在80℃以上的温度下接触，从而析出聚碳酸酯类聚合物（A）的微粒。

公开(公告)号：US20130337263A1

公开(公告)日：2013-12-19

申请号：US13962653

申请日：2013-08-08

Applicant: Toray Industries, Inc.

Inventor： Itaru Asano ,  Yuji Echigo ,  Hiroshi Takezaki

IPC: C08F120/44 ,  C08G64/40 ,  C08L55/02 ,  C08L63/00 ,  C08G65/46 ,  C08G73/10 ,  C08L77/00 ,  C08G75/23 ,  C08G69/46

CPC classification number: C08F120/44 ,  C08F236/12 ,  C08G63/88 ,  C08G64/40 ,  C08G65/46 ,  C08G69/46 ,  C08G73/1046 ,  C08G73/14 ,  C08G75/23 ,  C08J3/16 ,  C08J2339/06 ,  C08J2381/06 ,  C08L29/04 ,  C08L39/06 ,  C08L55/02 ,  C08L63/00 ,  C08L71/12 ,  C08L77/00 ,  C08L81/06 ,  Y10T428/2982 ,  C08L2666/04

Abstract: A fine polymer particle production method includes producing an emulsion in a liquid prepared by dissolving and mixing a polymer A and a polymer B in organic solvents in which a solution phase composed primarily of the polymer A and a solution phase composed primarily of the polymer B are formed as separate phases, and bringing it into contact with a poor solvent for the polymer A to precipitate the polymer A. This method serves for easy synthesis of fine polymer particles with a narrow particle size distribution and the method can be effectively applied to production of highly heat-resistant polymers that have been difficult to produce with the conventional methods.

Abstract translation: 聚合物微粒的制造方法包括在将聚合物A和聚合物B溶解并混合在主要由聚合物A构成的溶液相和主要由聚合物B构成的溶液相的有机溶剂中而制备的液体中制造乳液， 形成为分离相，使其与不良溶剂接触使聚合物A析出聚合物A.该方法用于容易地合成具有窄粒度分布的细聚合物颗粒，并且该方法可有效地应用于 使用常规方法难以生产的高耐热聚合物。