公开(公告)号：US11352489B2

公开(公告)日：2022-06-07

申请号：US17033241

申请日：2020-09-25

Applicant: KANEKA CORPORATION

Inventor： Sota Okumura ,  Yusuke Hirai ,  Takamasa Soejima

IPC: C08F214/06 ,  C08F220/44 ,  C08F265/06 ,  C08K5/1575 ,  C08K5/42 ,  C08L51/00

Abstract: A thermoplastic acrylic resin is provided. The thermoplastic acrylic resin is a graft copolymer in which a stem polymer is an acrylic resin containing acrylonitrile and another ethylenically unsaturated monomer, and a branch polymer is a polymer composed of an ethylenically unsaturated monomer. The acrylonitrile is contained in an amount of 35 mass % or more and 84.5 mass % or less, the other ethylenically unsaturated monomer is contained in an amount of 15 mass % or more and 64.5 mass % or less, and the polymer composed of an ethylenically unsaturated monomer is contained in an amount of 0.5 mass % or more and 40 mass % or less. Thus, provided are a thermoplastic acrylic resin having improved melt-processability without compromising heat resistance, a method for producing the thermoplastic acrylic resin, a thermoplastic acrylic resin composition, a molded body, an acrylic fiber, and a method for producing the acrylic fiber.

公开(公告)号：US20250019479A1

公开(公告)日：2025-01-16

申请号：US18902701

申请日：2024-09-30

Applicant: KANEKA CORPORATION

Inventor： Sota Okumura ,  Takamasa Soejima

IPC: C08F220/44 ,  C08K5/00 ,  D01F6/40

Abstract: A thermoplastic modacrylic resin suitable for producing modacrylic fibers having excellent melt spinning stability is provided. The thermoplastic modacrylic resin includes a copolymer. The copolymer includes a polymer (A) that includes a modacrylic resin including a constituent unit 1 derived from an acrylonitrile (a1) and a constituent unit 2 derived from an ethylenically unsaturated monomer (a2) other than the acrylonitrile (a1), and a polymer (B) that contains a constituent unit 3 derived from an acrylonitrile (b1). The polymer (B) has first and second terminals and is bonded to the polymer (A) at the second terminal. The polymer (B) includes 70 mol % or more of all the constituent units 3 in a base end region including the second terminal and having one half of all the constituent units in the polymer (B). The constituent unit 3 content is 3-30 mol % with respect to all the constituent units in the polymer (B).

公开(公告)号：US20250019478A1

公开(公告)日：2025-01-16

申请号：US18902339

申请日：2024-09-30

Applicant: KANEKA CORPORATION

Inventor： Sota Okumura ,  Takamasa Soejima

IPC: C08F220/44 ,  C08K5/1575 ,  C08K5/41 ,  D01F6/40

Abstract: A thermoplastic modacrylic resin suitable for making modacrylic fibers having outstanding strength is provided. A thermoplastic modacrylic resin includes a copolymer. The copolymer includes a polymer (A) that includes a modacrylic resin including a constituent unit 1 derived from an acrylonitrile (a1) and a constituent unit 2 derived from an ethylenically unsaturated monomer (a2) other than the acrylonitrile (a1), and a polymer (B) that contains a constituent unit 3 derived from an acrylonitrile (b1). The polymer (B) has first and second terminal ends and is joined to the polymer (A) at the second terminal end. The polymer (B) includes 70 mol % or more of all the constituent units 3 in a terminal end region including the first terminal and including half of the number of all constituent units in the polymer (B). The constituent unit 3 content is 3-30 mol % of all constituent units in the polymer (B).

公开(公告)号：US20250019481A1

公开(公告)日：2025-01-16

申请号：US18897202

申请日：2024-09-26

Applicant: KANEKA CORPORATION

Inventor： Sota Okumura ,  Takamasa Soejima

IPC: C08F290/04 ,  C08K3/34 ,  C08K5/07 ,  C08K5/098 ,  C08K5/41 ,  C08K13/02 ,  C08L51/00 ,  D01D5/084 ,  D01F6/40

Abstract: A thermoplastic modacrylic resin suitable for producing modacrylic fiber excellent in strength and/or melt spinning stability is provided. The thermoplastic modacrylic resin includes a copolymer. The copolymer includes a polymer (A) that includes a modacrylic resin containing constituent unit 1 derived from acrylonitrile (a1) and constituent unit 2 derived from an ethylenically unsaturated monomer (a2) other than the acrylonitrile (a1), and a polymer (B) that contains constituent unit 3 derived from acrylonitrile (b1). The polymer (B) has first and second terminals and is bound to the polymer (A) at the second terminal. The polymer (B) has 30 mol % or more to less than 70 mol % of all constituent unit 3 in a terminal region that contains the first terminal and contains one-half of all constituent units in the polymer (B). The constituent unit 3 content is 3 to 50 mol % relative to all constituent units in the polymer (B).

公开(公告)号：US20210009802A1

公开(公告)日：2021-01-14

申请号：US17033241

申请日：2020-09-25

Applicant: KANEKA CORPORATION

Inventor： Sota Okumura ,  Yusuke Hirai ,  Takamasa Soejima

IPC: C08L51/00 ,  C08F220/44 ,  C08F214/06 ,  C08F265/06 ,  C08K5/42 ,  C08K5/1575

Abstract: A thermoplastic acrylic resin is provided. The thermoplastic acrylic resin is a graft copolymer in which a stem polymer is an acrylic resin containing acrylonitrile and another ethylenically unsaturated monomer, and a branch polymer is a polymer composed of an ethylenically unsaturated monomer. The acrylonitrile is contained in an amount of 35 mass % or more and 84.5 mass % or less, the other ethylenically unsaturated monomer is contained in an amount of 15 mass % or more and 64.5 mass % or less, and the polymer composed of an ethylenically unsaturated monomer is contained in an amount of 0.5 mass % or more and 40 mass % or less. Thus, provided are a thermoplastic acrylic resin having improved melt-processability without compromising heat resistance, a method for producing the thermoplastic acrylic resin, a thermoplastic acrylic resin composition, a molded body, an acrylic fiber, and a method for producing the acrylic fiber.