Patents by Inventor Takato TAKENAKA

Takato TAKENAKA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11958926
    Abstract: A modified polyolefin resin having an intended adhesion strength to various substrates even when graft modification may be carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. The modified polyolefin resin may be a modified product of a polyolefin resin and satisfies conditions (A) to (C): condition (A)—a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; condition (B)—a ring-opening degree expressed by formula (1) is 40 or more; and condition (C)—the polyolefin resin includes an ethylene structural unit, ring-opening degree=modification degree K×ring-opening rate R??(1) wherein, in the formula (1), the modification degree K is a grafting weight (wt. %) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: April 16, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isamu Ono, Kei Kondo, Koji Kimura, Takato Takenaka, Yuuko Nahara, Shunji Sekiguchi
  • Publication number: 20230257492
    Abstract: An object of the present invention is to provide a modified polyolefin resin composition having a high polyethylene content and exhibiting a good balance between a low-temperature stability and an adhesion to a polyethylene substrate and a metal. The present invention provides a modified polyolefin resin that is a graft-modified product in which a component (A) that is a polyolefin resin having an ethylene structural unit content of 50% or more by mole is modified with a component (B) that is an ?,?-unsaturated carboxylic acid or an anhydride thereof and a component (C) that is a (meth)acrylate ester represented by the following general formula (I), and an extrapolated melting end temperature (Tem) of the modified polyolefin resin measured in accordance with JIS K7121-1987 using a differential scanning calorimeter at a temperature raising rate of 10° C./minute is 58° C. or lower.
    Type: Application
    Filed: April 19, 2021
    Publication date: August 17, 2023
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Tomohiro OKEDA, Takato TAKENAKA, Isamu ONO, Minoru YADA, Hiroko IWAKIRI
  • Patent number: 11518838
    Abstract: An object is to provide a resin composition having excellent performance as a binder such as adhesiveness and, at the same time, retaining solution properties favorably even after a solution is stored for a long period of time. A modified polyolefin resin composition includes a modified polyolefin resin (C), in which the modified polyolefin resin (C) is a resin made by modifying a polymer (A) that is a polymer (a) of a polyolefin resin or a chlorinated polyolefin resin and an ?,?-unsaturated carboxylic acid derivative having a structure derived from at least one carboxy group or a chlorinated product (b) thereof with a modification component including an alcohol (B); and a residual ratio of the structure derived from at least one carboxy group in the modified polyolefin resin (C) is 50% or more and 80% or less.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: December 6, 2022
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masaru Kono, Takao Yoshimoto, Takato Takenaka, Minoru Yada, Naosuke Komoto
  • Patent number: 11518872
    Abstract: An object is to provide a chlorinated polyolefin resin composition being superior in adhesion, solution stability, and chipping resistance. The chlorinated polyolefin resin composition contains a component (A): a polyolefin resin A having a melting point (TmA) obtained with a differential scanning calorimeter (DSC) in the range of 90 to 160° C., and a component (B): a polyolefin resin B having a melting point (TmB) obtained with a differential scanning calorimeter (DSC) in the range of 50 to 130° C., at least any one of the component (A) and the component (B), or a copolymer thereof being a chlorinated polyolefin resin (where |TmA?TmB|?5° C.).
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: December 6, 2022
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masaru Kono, Kensuke Asai, Takao Yoshimoto, Takato Takenaka, Minoru Yada, Naosuke Komoto
  • Publication number: 20220017671
    Abstract: A modified polyolefin resin may be capable of obtaining an intended adhesion strength regardless of a kind of a base resin thereof even when graft modification is carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. Such a modified polyolefin resin may be a modified product of a polyolefin resin and satisfying (A) and (B): (A): a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; and (B): a ring-opening degree expressed by formula (1) is 40 or more. Ring-opening degree=modification degree K×ring-opening rate R??(1): wherein, in formula (1), the modification degree K is a grafting weight (% by weight) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.
    Type: Application
    Filed: November 26, 2019
    Publication date: January 20, 2022
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isamu ONO, Kei KONDO, Koji KIMURA, Takato TAKENAKA, Yuuko NAHARA, Shunji SEKIGUCHI
  • Publication number: 20220010048
    Abstract: A modified polyolefin resin having an intended adhesion strength to various substrates even when graft modification may be carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. The modified polyolefin resin may be a modified product of a polyolefin resin and satisfies conditions (A) to (C): condition (A)—a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; condition (B)—a ring-opening degree expressed by formula (1) is 40 or more; and condition (C)—the polyolefin resin includes an ethylene structural unit, ring-opening degree=modification degree K×ring-opening rate R??(1) wherein, in the formula (1), the modification degree K is a grafting weight (wt. %) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.
    Type: Application
    Filed: November 26, 2019
    Publication date: January 13, 2022
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isamu ONO, Kei KONDO, Koji KIMURA, Takato TAKENAKA, Yuuko NAHARA, Shunji SEKIGUCHI
  • Publication number: 20210221926
    Abstract: A modified polyolefin resin is described. The modified polyolefin resin can enhance a cleaning property upon cleaning inside of a coating machine with a cleaning solvent including water, and is excellent in a balance between heat resistance and solution stability. The modified polyolefin resin is a polyolefin resin that is modified with an ?,?-unsaturated carboxylic acid or a derivative thereof and with an amino alcohol having a primary or a secondary amino group.
    Type: Application
    Filed: May 30, 2019
    Publication date: July 22, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Fumiyasu SAKAKIBARA, Ryuji DOI, Kei KONDO, Takao YOSHIMOTO, Chiaki HIRAOKA, Shunji SEKIGUCHI, Isamu ONO, Koji KIMURA, Takato TAKENAKA, Naosuke KOMOTO
  • Publication number: 20210070911
    Abstract: An object is to provide a resin composition having excellent performance as a binder such as adhesiveness and, at the same time, retaining solution properties favorably even after a solution is stored for a long period of time. A modified polyolefin resin composition includes a modified polyolefin resin (C), in which the modified polyolefin resin (C) is a resin made by modifying a polymer (A) that is a polymer (a) of a polyolefin resin or a chlorinated polyolefin resin and an ?,?-unsaturated carboxylic acid derivative having a structure derived from at least one carboxy group or a chlorinated product (b) thereof with a modification component including an alcohol (B); and a residual ratio of the structure derived from at least one carboxy group in the modified polyolefin resin (C) is 50% or more and 80% or less.
    Type: Application
    Filed: October 23, 2018
    Publication date: March 11, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masaru KONO, Takao YOSHIMOTO, Takato TAKENAKA, Minoru YADA, Naosuke KOMOTO
  • Publication number: 20210009727
    Abstract: An object is to provide a chlorinated polyolefin resin that has excellent solution stability and excellent adhesion to polyolefin substrates including a polyethylene substrate. The chlorinated polyolefin resin is a chlorinated product of a copolymer having a structural unit derived from ethylene, in which a content ratio of the ethylene structural unit in the copolymer is 50 mol % to 90 mol %.
    Type: Application
    Filed: January 11, 2019
    Publication date: January 14, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Yiwen CHEN, Kota FUJIMOTO, Takato TAKENAKA, Masanoru TANAKA, Eriko MURAOKA, Minoru YADA, Naosuke KOMOTO
  • Publication number: 20200385557
    Abstract: An object is to provide a chlorinated polyolefin resin composition being superior in adhesion, solution stability, and chipping resistance. The chlorinated polyolefin resin composition contains a component (A): a polyolefin resin A having a melting point (TmA) obtained with a differential scanning calorimeter (DSC) in the range of 90 to 160° C., and a component (B): a polyolefin resin B having a melting point (TmB) obtained with a differential scanning calorimeter (DSC) in the range of 50 to 130° C., at least any one of the component (A) and the component (B), or a copolymer thereof being a chlorinated polyolefin resin (where |TmA?TmB|?5° C.).
    Type: Application
    Filed: March 12, 2018
    Publication date: December 10, 2020
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masaru KONO, Kensuke ASAI, Takao YOSHIMOTO, Takato TAKENAKA, Minoru YADA, Naosuke KOMOTO