Patents by Inventor Kazunori Terada
Kazunori Terada 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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Patent number: 11192979Abstract: The present invention provides a polyamide composition containing 50 to 99 parts by mass of an aliphatic polyamide (1A) formed from a diamine and a dicarboxylic acid, and 1 to 50 parts by mass of a semi-aromatic polyamide (1B) containing a dicarboxylic acid unit that includes at least 75 mol % of isophthalic acid and a diamine unit that includes at least 50 mol % of a diamine of 4 to 10 carbon atoms, wherein the tan ? peak temperature of the polyamide composition is at least 90° C., and the weight average molecular weight Mw of the polyamide composition satisfies 15,000?Mw?35,000. The invention also provides a molded article or the like formed using the polyamide composition.Type: GrantFiled: March 30, 2018Date of Patent: December 7, 2021Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Shinji Ieda, Koichi Nagase, Hisho Yamada, Jun Mikami, Takayuki Wakita, Yoshifumi Araki, Kimiaki Kawatani, Tomoyo Okumura, Yoshikimi Kondo, Kazunori Terada
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Publication number: 20200087458Abstract: The present invention provides a polyamide composition containing 50 to 99 parts by mass of an aliphatic polyamide (1A) formed from a diamine and a dicarboxylic acid, and 1 to 50 parts by mass of a semi-aromatic polyamide (1B) containing a dicarboxylic acid unit that includes at least 75 mol % of isophthalic acid and a diamine unit that includes at least 50 mol % of a diamine of 4 to 10 carbon atoms, wherein the tan ? peak temperature of the polyamide composition is at least 90° C., and the weight average molecular weight Mw of the polyamide composition satisfies 15,000?Mw?35,000. The invention also provides a molded article or the like formed using the polyamide composition.Type: ApplicationFiled: March 30, 2018Publication date: March 19, 2020Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Shinji IEDA, Koichi NAGASE, Hisho YAMADA, Jun MIKAMI, Takayuki WAKITA, Yoshifumi ARAKI, Kimiaki KAWATANI, Tomoyo OKUMURA, Yoshikimi KONDO, Kazunori TERADA
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Patent number: 9951202Abstract: A polyamide resin composition including a polyamide resin (A), a copper compound (B), a bromide of an alkali metal and/or a bromide of an alkaline earth metal (C), and at least one fatty acid compound (D) selected from the group consisting of fatty acid esters, fatty acid amides, and fatty acid metal salts, wherein the fatty acid compound (D) has an acid value of 5 mgKOH/g or less.Type: GrantFiled: October 14, 2015Date of Patent: April 24, 2018Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Kazunori Terada, Teruaki Sakuma
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Patent number: 9828491Abstract: A polyamide resin composition comprising a polyamide resin (A), a copper compound (B), a bromide of an alkali metal and/or a bromide of an alkaline earth metal (C), and at least one phosphorus compound (D) selected from the group consisting of tris(2,4-di-t-butylphenyl)phosphite, bis(2,4-di-t-butylphenyl)pentaerythritol diphosphite, bis(2,6-di-t-butyl-4-methylphenyl)pentaerythritol diphosphite, bis(2,4-dicumylphenyl)pentaerythritol diphosphite, 2,2?,2?-nitrilo(triethyl-tris(3,3?,5,5?-tetra-t-butyl-1,1?-biphenyl-2,2?-diyl))phosphite, tetrakis(2,4-di-t-butylphenyl)-4,4?-biphenylene diphosphonite, tetrakis(2,4-di-t-butylphenyl)-4,3?-biphenylene diphosphonite, and tetrakis(2,4-di-t-butylphenyl)-3,3?-biphenylene diphosphonate, in an amount of 0.01 to 10% by mass with respect to 100% by mass of the polyamide resin composition, at least one fatty acid compound (E), and an inorganic filler (F).Type: GrantFiled: December 17, 2015Date of Patent: November 28, 2017Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Teruaki Sakuma, Kazunori Terada
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Patent number: 9783677Abstract: The polyamide resin composition of the present invention contains (A) a polyamide resin, (B) a glass fiber including a compound having a carboxylic anhydride-containing unsaturated vinyl monomer, the compound being on at least a part of a surface of the glass fiber, and (C) a copolymer including a carboxylic anhydride-containing unsaturated vinyl monomer and having a glass transition temperature Tg of higher than 0° C.Type: GrantFiled: April 16, 2014Date of Patent: October 10, 2017Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Tomoyo Kawamura, Teruaki Sakuma, Kazunori Terada
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Patent number: 9752006Abstract: A polyamide resin composition including a polyamide resin (A), a copper compound (B), a bromide of an alkali metal and/or a bromide of an alkaline earth metal (C), and a secondary amine compound (D).Type: GrantFiled: December 17, 2015Date of Patent: September 5, 2017Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Teruaki Sakuma, Kazunori Terada
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Patent number: 9611356Abstract: An object of the present invention is to provide a copolymer polyamide which has excellent strength, high-temperature strength, low water absorbance, low blocking properties, releasability and plasticizing time stability, and a copolymer polyamide composition which has excellent vibration fatigue characteristics, surface appearance and continuous productivity. A copolymer polyamide of the present invention is obtained by polymerizing (a) at least one alicyclic dicarboxylic acid, (b) one diamine having 8 or more carbon atoms, and (c) at least one copolymer component selected from the group consisting of the following (c-1) to (c-3): a (c-1) dicarboxylic acid other than the alicyclic dicarboxylic acid; a (c-2) diamine having fewer carbon atoms than the (b) diamine; and a (c-3) lactam and/or aminocarboxylic acid, and the copolymer polyamide satisfies specific conditions.Type: GrantFiled: January 6, 2012Date of Patent: April 4, 2017Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Shinji Ieda, Kazunori Terada, Yu Nitto
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Publication number: 20160177058Abstract: [Object] It is intended to obtain a polyamide resin composition that is excellent in heat aging resistance and exhibits suppressed metal corrosive properties and copper-depositing properties. [Means of solving the problems] A polyamide resin composition comprising a polyamide resin (A), a copper compound (B), a bromide of an alkali metal and/or a bromide of an alkaline earth metal (C), and at least one phosphorus compound (D) selected from the group consisting of phosphite compounds represented by the following general formula (1), and phosphonite compounds represented by the following general formula (2): phosphite compound: (RO)mP(OH)3-m??(1) and phosphonite compound: (RO)nO(OH)2-n(R)??(2) wherein m represents 1, 2, or 3; n represents 1 or 2; R represents an alkyl group, a phenyl group, or a partially substituted alkyl group or phenyl group; and if each of m and n is 2 or more, a plurality of (RO) groups in the general formulas (1) and (2) are the same or different from each other.Type: ApplicationFiled: December 17, 2015Publication date: June 23, 2016Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Teruaki SAKUMA, Kazunori TERADA
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Publication number: 20160177049Abstract: [Object] It is intended to obtain a polyamide resin composition that is excellent in heat aging resistance and exhibits suppressed metal corrosive properties and copper-depositing properties. [Means of Solving the Problems] A polyamide resin composition including a polyamide resin (A), a copper compound (B), a bromide of an alkali metal and/or a bromide of an alkaline earth metal (C), and a secondary amine compound (D).Type: ApplicationFiled: December 17, 2015Publication date: June 23, 2016Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Teruaki SAKUMA, Kazunori TERADA
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Publication number: 20160152826Abstract: The polyamide resin composition of the present invention contains (A) a polyamide resin, (B) a glass fiber including a compound having a carboxylic anhydride-containing unsaturated vinyl monomer, the compound being on at least a part of a surface of the glass fiber, and (C) a copolymer including a carboxylic anhydride-containing unsaturated vinyl monomer and having a glass transition temperature Tg of higher than 0° C.Type: ApplicationFiled: April 16, 2014Publication date: June 2, 2016Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Tomoyo KAWAMURA, Teruaki SAKUMA, Kazunori TERADA
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Publication number: 20160108208Abstract: A polyamide resin composition including a polyamide resin (A), a copper compound (B), a bromide of an alkali metal and/or a bromide of an alkaline earth metal (C), and at least one fatty acid compound (D) selected from the group consisting of fatty acid esters, fatty acid amides, and fatty acid metal salts, wherein the fatty acid compound (D) has an acid value of 5 mg/g or less.Type: ApplicationFiled: October 14, 2015Publication date: April 21, 2016Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazunori TERADA, Teruaki SAKUMA
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Publication number: 20160108205Abstract: A polyamide resin composition including a polyamide resin (A), a copper compound (B), a bromide of an alkali metal and/or a bromide of an alkaline earth metal (C), and an amphoteric compound and/or a basic compound (D).Type: ApplicationFiled: October 14, 2015Publication date: April 21, 2016Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazunori TERADA, Teruaki SAKUMA
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Patent number: 9090739Abstract: (Problems to be solved) Provision of a polyamide composition with good heat resistance, stability under heating, heat resistant color tone stability, reflow heat resistance properties and fogging properties. (Solution) A polyamide obtained by polymerizing (a) a dicarboxylic acid containing at least 50 mol % of an alicyclic dicarboxylic acid and (b) a diamine containing at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end content of less than 30? equivalents/g.Type: GrantFiled: March 14, 2012Date of Patent: July 28, 2015Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Shinji Ieda, Kazunori Terada, Yu Nitto
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Patent number: 9023975Abstract: [Problem to be Solved] To provide a polyamide having a high melting point, which has excellent strength, toughness, and stability under heating. [Solution] This polyamide is obtained by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end amount of 30 to 60? equivalents/g.Type: GrantFiled: September 7, 2010Date of Patent: May 5, 2015Assignee: Asahi Kasei Chemicals CorporationInventors: Yu Nitto, Yasukazu Shikano, Shinji Ieda, Kazunori Terada, Masaaki Aramaki
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Patent number: 8883048Abstract: The present invention relates to a reflector for a light-emitting device consisting of (A) an polyamide composition comprising a polyamide polymerized from (a) a dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and (b) a diamine comprising at least 50 mol % of a diamine with a branched main chain.Type: GrantFiled: September 7, 2010Date of Patent: November 11, 2014Assignees: Asahi Kasei Chemicals Corporation, Nichia CorporationInventors: Kazuhiko Hashimoto, Kazunori Terada, Masafumi Kuramoto, Motohisa Kitani
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Patent number: 8765861Abstract: A masterbatch pellet is provided for obtaining a polyamide resin composition excellent in mechanical strength and heat aging resistance. The masterbatch pellet is obtained by melt-kneading a raw material component containing a thermoplastic resin (A) and a metal oxide (B), wherein a content of the metal oxide (B) is 0.5% by mass or more and a fraction of the metal oxide (B) after the melt kneading is present as an aggregated particle of 5 ?m or more in a major axis length. A proportion of the aggregated particle of 5 ?m or more in a major axis length in a whole metal oxide after the melt kneading is preferably 30% by mass or less.Type: GrantFiled: May 20, 2011Date of Patent: July 1, 2014Assignee: Asahi Kasei Chemicals CorporationInventor: Kazunori Terada
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Publication number: 20140039120Abstract: (Problems to be solved) Provision of a polyamide composition with good heat resistance, stability under heating, heat resistant color tone stability, reflow heat resistance properties and fogging properties. (Solution) A polyamide obtained by polymerizing (a) a dicarboxylic acid containing at least 50 mol % of an alicyclic dicarboxylic acid and (b) a diamine containing at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end content of less than 30? equivalents/g.Type: ApplicationFiled: March 14, 2012Publication date: February 6, 2014Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Shinji Ieda, Kazunori Terada, Yu Nitto
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Publication number: 20130261256Abstract: An object of the present invention is to provide a copolymer polyamide which has excellent strength, high-temperature strength, low water absorbance, low blocking properties, releasability and plasticizing time stability, and a copolymer polyamide composition which has excellent vibration fatigue characteristics, surface appearance and continuous productivity. A copolymer polyamide of the present invention is obtained by polymerizing (a) at least one alicyclic dicarboxylic acid, (b) one diamine having 8 or more carbon atoms, and (c) at least one copolymer component selected from the group consisting of the following (c-1) to (c-3): a (c-1) dicarboxylic acid other than the alicyclic dicarboxylic acid; a (c-2) diamine having fewer carbon atoms than the (b) diamine; and a (c-3) lactam and/or aminocarboxylic acid, and the copolymer polyamide satisfies specific conditions.Type: ApplicationFiled: January 6, 2012Publication date: October 3, 2013Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Shinji Ieda, Kazunori Terada, Yu Nitto
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Patent number: 8445573Abstract: A polyphenylene ether resin composition obtainable by melt-mixing a polyphenylene ether (A) comprising a structural unit (a) represented by formula (1): (wherein R1 and R2 each independently represent a hydrogen atom, a halogen atom, an optionally substituted alkyl group, and the like), and/or a structural unit (b) represented by formula (2): (wherein R3 and R4 each independently represent a hydrogen atom, a halogen atom, an optionally substituted alkyl group, and the like), with a nitrogen compound (B) comprising at least one group selected from the group consisting of primary amino groups, secondary amino groups and tertiary amino groups in a single molecule thereof, wherein the polyphenylene ether (A) comprises 0.1% by mass or more and 1.5% by mass or less of at least one type of aromatic hydrocarbon (C) containing 7 or 8 carbon atoms.Type: GrantFiled: May 8, 2009Date of Patent: May 21, 2013Assignee: Asahi Kasei Chemicals CorporationInventors: Tomohiro Kondo, Toru Yamaguchi, Kazunori Terada
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Publication number: 20130059962Abstract: A masterbatch pellet is provided for obtaining a polyamide resin composition excellent in mechanical strength and heat aging resistance. The masterbatch pellet is obtained by melt-kneading a raw material component containing a thermoplastic resin (A) and a metal oxide (B), wherein a content of the metal oxide (B) is 0.5% by mass or more and a fraction of the metal oxide (B) after the melt kneading is present as an aggregated particle of 5 ?m or more in a major axis length. A proportion of the aggregated particle of 5 ?m or more in a major axis length in a whole metal oxide after the melt kneading is preferably 30% by mass or less.Type: ApplicationFiled: May 20, 2011Publication date: March 7, 2013Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventor: Kazunori Terada