Patents by Inventor Sora TOMITA

Sora TOMITA 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).

  • Macromonomer copolymer, epoxy resin composition, adhesive, molding material, and cured product
    Patent number: 11884813
    Abstract: There is provided an epoxy resin composition comprising a (meth)acrylic copolymer (A), an epoxy resin (B), and a curing agent (C), wherein the (meth)acrylic copolymer (A) has a constituent unit derived from a macromonomer (a) and a constituent unit derived from a vinyl monomer (b), and wherein a glass transition temperature (TgB) of a polymer obtained by polymerizing only the vinyl monomer (b) is 25° C. or less.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: January 30, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Eri Masuda, Junichi Nakamura, Kazuyoshi Odaka, Sora Tomita, Go Otani
  • BISPHENOL COMPOSITION AND POLYCARBONATE RESIN
    Publication number: 20220098135
    Abstract: A bisphenol composition includes 95% or more by mass of a bisphenol and 200 mass ppm or more of a compound represented by the following general formula (II): In formula (II), R21 and R22 denote a methyl group or a hydrogen atom; R22 is a methyl group when R21 is a hydrogen atom; R22 is a hydrogen atom when R21 is a methyl group; R23 to R25 independently denote a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; and R23, R24, and R25 may be bonded or cross-linked between two of the groups. A method for producing a polycarbonate resin using the bisphenol composition is also described.
    Type: Application
    Filed: September 13, 2021
    Publication date: March 31, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kei Uchiyama, Masashi Yokogi, Hiroki Shibata, Sora Tomita, Yuichi Yayama, Kenji Tsuruhara, Takayuki Yoshida, Yukie Nakashima, Rie Konishi, Kazuo Hirowatari
  • BISPHENOL COMPOSITION AND POLYCARBONATE RESIN
    Publication number: 20210403641
    Abstract: A bisphenol composition including 95% or more by mass of a bisphenol, wherein a bisphenol represented by the following general formula (II) in the bisphenol composition constitutes 150 mass ppm or more, and the bisphenol composition has a methanol dissolution color (Hazen color number) of 2 or less, In formula (II), X denotes a single bond, —CR11R12—, —O—, —CO—, —S—, —SO—, or —SO2—, R11 and R12 independently denote a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and R11 and R12 may be bonded to each other to form a ring. A method for producing a polycarbonate resin using the bisphenol composition is also described.
    Type: Application
    Filed: September 13, 2021
    Publication date: December 30, 2021
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kei Uchiyama, Masashi Yokogi, Hiroki Shibata, Sora Tomita, Yuichi Yayama, Kenji Tsuruhara, Takayuki Yoshida, Yukie Nakashima, Rie Konishi, Kazuo Hirowatari
  • MACROMONOMER COPOLYMER, EPOXY RESIN COMPOSITION, ADHESIVE, MOLDING MATERIAL, AND CURED PRODUCT
    Publication number: 20200199352
    Abstract: There is provided an epoxy resin composition comprising a (meth)acrylic copolymer (A), an epoxy resin (B), and a curing agent (C), wherein the (meth)acrylic copolymer (A) has a constituent unit derived from a macromonomer (a) and a constituent unit derived from a vinyl monomer (b), and wherein a glass transition temperature (TgB) of a polymer obtained by polymerizing only the vinyl monomer (b) is 25° C. or less.
    Type: Application
    Filed: March 2, 2020
    Publication date: June 25, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Eri MASUDA, Junichi NAKAMURA, Kazuyoshi ODAKA, Sora TOMITA, Go OTANI