Patents by Inventor Shinji MAETANI

Shinji MAETANI 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).

  • Publication number: 20220002494
    Abstract: Provided is a polyorganosilsesquioxane capable of forming, when cured, a cured product that offers high surface hardness and good heat resistance, is highly flexible, and has excellent processability. The present invention relates to a polyorganosilsesquioxane including a constitutional unit represented by Formula (1). The polyorganosilsesquioxane includes a constitutional unit represented by Formula (I) and a constitutional unit represented by Formula (II) in a mole ratio of the constitutional unit represented by Formula (I) to the constitutional unit represented by Formula (II) of 5 or more. The polyorganosilsesquioxane has a total proportion of the constitutional unit represented by Formula (1) and a constitutional unit represented by Formula (4) of 55% to 100% by mole based on the total amount (100% by mole) of all siloxane constitutional units.
    Type: Application
    Filed: August 4, 2021
    Publication date: January 6, 2022
    Applicant: DAICEL CORPORATION
    Inventors: Akihiro KUWANA, Nobuhiko HARADA, Maya MASUI, Ichiro TAKASE, Shinji MAETANI, Naoko TSUJI
  • Patent number: 11111337
    Abstract: Provided is a polyorganosilsesquioxane capable of forming, when cured, a cured product that offers high surface hardness and good heat resistance, is highly flexible, and has excellent processability. The present invention relates to a polyorganosilsesquioxane including a constitutional unit represented by Formula (1). The polyorganosilsesquioxane includes a constitutional unit represented by Formula (I) and a constitutional unit represented by Formula (II) in a mole ratio of the constitutional unit represented by Formula (I) to the constitutional unit represented by Formula (II) of 5 or more. The polyorganosilsesquioxane has a total proportion of the constitutional unit represented by Formula (1) and a constitutional unit represented by Formula (4) of 55% to 100% by mole based on the total amount (100% by mole) of all siloxane constitutional units.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: September 7, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Akihiro Kuwana, Nobuhiko Harada, Maya Masui, Ichiro Takase, Shinji Maetani, Naoko Tsuji
  • Publication number: 20200079910
    Abstract: An object of the present invention is to provide a polyorganosilsesquioxane that can form a hard coat layer having high surface hardness through in-mold injection molding and can form a tack-free coating film, and thus is suitable as a material for a hard coat layer of a transfer film that can be wound as a roll.
    Type: Application
    Filed: May 16, 2018
    Publication date: March 12, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Akihiro SHIBAMOTO, Shinji MAETANI, Kazuhiro NISHIDA, Daisuke USA
  • Publication number: 20200071579
    Abstract: Provided is an adhesive composition that can be cured at low temperatures and can form a cured product having excellent insulating property, heat resistance, and adhesiveness. The adhesive composition according to the present invention includes polyorganosilsesquioxane (A) including a constituent unit represented by Formula (1) below, R1SiO3/2(1), in Formula (1), R1 represents a group containing a radically polymerizable group. In the polyorganosilsesquioxane (A), a proportion of the constituent unit represented by Formula (1) and a constituent unit represented by the following Formula (2), relative to a total amount (100 mol %) of siloxane constituent units, is from 55 to 100 mol %, R1SiO2/2(OR2) (2), in Formula (2), R1 is as defined above, and R2 is a hydrogen atom or an alkyl group having from 1 to 4 carbons. The polyorganosilsesquioxane (A) has a number average molecular weight from 1500 to 50000 and a molecular weight dispersity (weight average molecular weight/number average molecular weight) from 1.
    Type: Application
    Filed: May 16, 2018
    Publication date: March 5, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Akihiro SHIBAMOTO, Shinji MAETANI, Kazuhiro NISHIDA, Daisuke USA, Akira YAMAKAWA, Naoko TSUJI
  • Publication number: 20180282485
    Abstract: Provided is a polyorganosilsesquioxane capable of forming, when cured, a cured product that offers high surface hardness and good heat resistance, is highly flexible, and has excellent processability. The present invention relates to a polyorganosilsesquioxane including a constitutional unit represented by Formula (1). The polyorganosilsesquioxane includes a constitutional unit represented by Formula (I) and a constitutional unit represented by Formula (II) in a mole ratio of the constitutional unit represented by Formula (I) to the constitutional unit represented by Formula (II) of 5 or more. The polyorganosilsesquioxane has a total proportion of the constitutional unit represented by Formula (1) and a constitutional unit represented by Formula (4) of 55% to 100% by mole based on the total amount (100% by mole) of all siloxane constitutional units.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 4, 2018
    Applicant: DAICEL CORPORATION
    Inventors: Akihiro KUWANA, Nobuhiko HARADA, Maya MASUI, Ichiro TAKASE, Shinji MAETANI, Naoko TSUJI
  • Publication number: 20160297933
    Abstract: Provided is a polyorganosilsesquioxane capable of forming, when cured, a cured product that offers high surface hardness and good heat resistance, is highly flexible, and has excellent processability. The present invention relates to a polyorganosilsesquioxane including a constitutional unit represented by Formula (1). The polyorganosilsesquioxane includes a constitutional unit represented by Formula (I) and a constitutional unit represented by Formula (II) in a mole ratio of the constitutional unit represented by Formula (I) to the constitutional unit represented by Formula (II) of 5 or more. The polyorganosilsesquioxane has a total proportion of the constitutional unit represented by Formula (1) and a constitutional unit represented by Formula (4) of 55% to 100% by mole based on the total amount (100% by mole) of all siloxane constitutional units.
    Type: Application
    Filed: November 14, 2014
    Publication date: October 13, 2016
    Applicant: DAICEL CORPORATION
    Inventors: Akihiro KUWANA, Nobuhiko HARADA, Maya MASUI, Ichiro TAKASE, Shinji MAETANI, Naoko TSUJI