Patents by Inventor Ryoji Tatara
Ryoji Tatara 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).
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Publication number: 20220043345Abstract: An object of the present invention is to provide a photosensitive resin composition that can form an insulating film having low dielectric constant and low dielectric loss tangent and undergoing small changes in elongation properties in response to changes in environmental temperature. The photosensitive resin composition of the present invention contains: a polymer (A) having a structural unit (a1) represented by Formula (a1); a crosslinking agent (B); and a photocation generator (C). [R1 is an unsubstituted or substituted nitrogen-containing heteroaromatic ring or an unsubstituted or substituted aromatic hydrocarbon ring; R2 and R3 are each independently an unsubstituted or substituted aromatic hydrocarbon ring; R4 is an unsubstituted or substituted alkyl group having 2 to 20 carbon atoms; R5 is an unsubstituted or substituted alkyl group having 1 to 20 carbon atoms; and X's are each independently an oxygen atom, a sulfur atom, an ester bond, an amide bond, or —SO2—.Type: ApplicationFiled: October 21, 2021Publication date: February 10, 2022Applicant: JSR CORPORATIONInventors: Ryouta TSUYUKI, Kimiyuki KANNO, Toshiaki KADOTA, Ryoji TATARA
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Publication number: 20220043346Abstract: An object of the present invention is to provide a photosensitive resin composition that can form an insulating film having low dielectric constant and low dielectric loss tangent and undergoing small changes in elongation properties in response to changes in environmental temperature. The photosensitive resin composition of the present invention contains: a polymer (A) having a structural unit (a1) represented by Formula (a1); a crosslinking agent (B); a photocation generator (C); and a compound (D) represented by Formula (D).Type: ApplicationFiled: October 21, 2021Publication date: February 10, 2022Applicant: JSR CORPORATIONInventors: Kimiyuki KANNO, Ryouta TSUYUKI, Ryoji TATARA
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Publication number: 20210286262Abstract: A photosensitive resin composition contains: a polymer (A) having a terminal group represented by Formula (a1) and a repeating structural unit represented by Formula (a2); a crosslinking agent (B); and a photocation generator (C). Y represents a reactive group that reacts with the crosslinking agent (B) by action of a cation generated from the photocation generator (C) upon light irradiation; each X independently represents an oxygen atom, a sulfur atom, an ester bond, an amide bond, or —SO2—; R1 represents a divalent hydrocarbon group or a divalent group in which a functional group other than the reactive group and heterocycles is introduced into the divalent hydrocarbon group; and R2 represents a divalent hydrocarbon group, a divalent group in which a functional group other than the reactive group and heterocycles is introduced into the divalent hydrocarbon group, or a heterocycle-containing group that does not have the reactive group.Type: ApplicationFiled: May 17, 2019Publication date: September 16, 2021Applicant: JSR CORPORATIONInventors: Torahiko YAMAGUCHI, Kimiyuki KANNO, Ryoji TATARA, Toshiaki KADOTA, Ryoyu HIFUMI, Shoma ANABUKI
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Patent number: 10266650Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.Type: GrantFiled: September 8, 2017Date of Patent: April 23, 2019Assignee: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Patent number: 10227449Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.Type: GrantFiled: September 8, 2017Date of Patent: March 12, 2019Assignee: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Publication number: 20180179335Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.Type: ApplicationFiled: September 8, 2017Publication date: June 28, 2018Applicant: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Publication number: 20180009938Abstract: The polymer includes a first structural unit represented by formula (1), a second structural unit represented by formula (2), and a third structural unit represented by formula (3). R1, R2, R10 and R11 each independently represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; R3A, R3B R4A and R4B each independently represent a methylene group or an alkylene group having 2 to 4 carbon atoms; ZA to ZD each independently represent —O— or —S—; and L represents a divalent group represented by formula (3-1) or (3-2), wherein Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.Type: ApplicationFiled: September 20, 2017Publication date: January 11, 2018Applicant: JSR CORPORATIONInventors: Shoma ANABUKI, Ryoyu HIFUMI, Ryoji TATARA, Toshiaki KADOTA, Nobuyuki MIYAKI, Kazuki HATASE
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Publication number: 20170369649Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.Type: ApplicationFiled: September 8, 2017Publication date: December 28, 2017Applicant: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Publication number: 20070096355Abstract: The invention relates to a photocurable resin composition comprising: (A) 20-65 wt % of a cationically polymerizable component, (B) 0.1-10 wt % of a cationic-polymerization initiator, (C) 5-45 wt % of a component having a structure shown by the following formula (1), wherein R?, R2, and R3 individually represent organic groups, provided that at least two of R1, R2, and R3 have a polymerizable carbon-carbon double bond, (D) 0.1-10 wt % of a radical-polymerization initiator, and (E) 0-20 wt % of a component having at least one radically polymerizable group in the molecule; The invention also relates to a method of making three dimensional articles and the use of the articles.Type: ApplicationFiled: June 25, 2004Publication date: May 3, 2007Inventors: Takao Yashiro, Ryoji Tatara, Takayoshi Tanabe
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Publication number: 20070004816Abstract: The invention relates to a radiation curable composition comprising (A) a component comprising a carboxyl group that may dissociate in the presence of an acid, (B) a cationically polymerizable compound, and (C) a cationic photoinitiator.Type: ApplicationFiled: June 14, 2004Publication date: January 4, 2007Inventors: Takao Yashiro, Ryoji Tatara, Takayoshi Tanabe