Patents by Inventor Moe KAWAHARA
Moe KAWAHARA 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: 20240101872Abstract: A laminate is provided that has an adhesive layer including a composition containing an acrylic block copolymer, the adhesive layer being so designed that it has a small change in adhesive force over time. The laminate includes an adhesive layer (B) including an acrylic adhesive composition (Z), and a substrate layer (A) including a polyolefin resin (a), the acrylic adhesive composition (Z) including an acrylic block copolymer (I) having one or more polymer blocks (b1) containing an acrylic acid ester-derived structural unit, and one or more polymer blocks (b2) containing a methacrylic acid ester-derived structural unit, the polymer block (b1) containing a structural unit derived from an acrylic acid ester (b1-1) represented by the general formula (1) CH2?CH—COOR1 (wherein R1 denotes a C7-C12 organic group).Type: ApplicationFiled: December 16, 2021Publication date: March 28, 2024Applicant: KURARAY CO., LTD.Inventors: Makoto AKAI, Tomoe TAKASAKI, Moe KAWAHARA, Tomohiro ONO
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Publication number: 20230235162Abstract: A thermoplastic elastomer composition including an acrylic block copolymer (I) and a hydrogenated block copolymer (II). The content of the acrylic block copolymer (I) is 70 to 300 parts by mass with respect to 100 parts by mass of the hydrogenated block copolymer (II); the hydrogenated block copolymer (II) is a hydrogenated product of a block copolymer (P) including a polymer block (A1) containing structural units derived from an aromatic vinyl compound, and a polymer block (B1) containing 1 to 100 mass % of structural units (b1) derived from farnesene and 99 to 0 mass % of structural units (b2) derived from a conjugated diene other than farnesene, the mass ratio [(A1)/(B1)] of the polymer block (A1) to the polymer block (B1) being 1/99 to 70/30; and the hydrogenation ratio of carbon-carbon double bonds in the polymer block (B1) is 50 to 100 mol %.Type: ApplicationFiled: April 8, 2021Publication date: July 27, 2023Applicant: KURARAY CO., LTD.Inventors: Moe KAWAHARA, Makoto AKAI, Daisuke KONISHI, Hiromitsu SASAKI
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Publication number: 20230138239Abstract: A thermoplastic elastomer composition including 100 parts by mass of a hydrogenated block copolymer (A), 20 to 180 parts by mass of an acrylic block copolymer (B), 5 to 45 parts by mass of an aromatic polymer (C), and 70 to 250 parts by mass of a softener (D). The hydrogenated block copolymer (A) is a hydrogenated product of a block copolymer (P) having at least two polymer blocks (a1) with a structural unit derived from an aromatic vinyl compound and at least one polymer block (a2) with a structural unit derived from a conjugated diene. The acrylic block copolymer (B) has at least one polymer block (b1) with a structural unit derived from an acrylate and at least one polymer block (b2) with a structural unit derived from a methacrylate.Type: ApplicationFiled: February 26, 2021Publication date: May 4, 2023Applicant: KURARAY CO., LTD.Inventors: Moe KAWAHARA, Shutaro HIRAKATA, Tomohiro ONO
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Publication number: 20220363883Abstract: A vinyl chloride resin composition includes a vinyl chloride resin (A), an acrylic block copolymer (B) including a polymer block (b1) containing acrylic acid ester units and a polymer block (b2) containing methacrylic acid ester units, and a gelation accelerator (C), where the weight average molecular weight of the acrylic block copolymer (B) is in the range of 100,000 to 250,000, the content of the polymer block (b2) in the acrylic block copolymer (B) is in the range of 10 to 25 mass %, and the vinyl chloride resin composition contains 20 to 150 parts by mass of the acrylic block copolymer (B) and 4 to 18 parts by mass of the gelation accelerator (C) with respect to 100 parts by mass of the vinyl chloride resin (A).Type: ApplicationFiled: December 21, 2020Publication date: November 17, 2022Applicant: KURARAY CO., LTD.Inventors: Moe KAWAHARA, Makoto AKAI, Tomohiro ONO
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Publication number: 20220106503Abstract: A laminate production method is provided which can sufficiently prevent the occurrence of blocking without causing deterioration in the outstanding characteristics of acrylic block copolymers such as adhesive performance, and can also ensure excellent processability during extrusion.Type: ApplicationFiled: August 30, 2019Publication date: April 7, 2022Applicant: KURARAY CO., LTD.Inventors: Tomohiro ONO, Makoto AKAI, Moe KAWAHARA, Kanayo NAKADA
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Publication number: 20210347931Abstract: Sufficiently antiblock pellets are provided that include an acrylic block copolymer which has a polymer block including methyl acrylate units. A shaped article is provided from the pellets with high productivity while avoiding deterioration in the outstanding characteristics of the acrylic block copolymer. The pellets include an acrylic block copolymer (I) including at least one polymer block (A1) including methacrylic acid ester units, and at least one polymer block (B1) including acrylic acid ester units, and an acrylic polymer (II) containing 35 mass % or more methyl methacrylate units and having a melt flow rate (MFR) measured at 230° C. under 3.8 kg load of not less than 10 g/10 min. The acrylic acid ester units present in the polymer block (B1) of the acrylic block copolymer (I) consist solely of methyl acrylate units and acrylic acid ester (1) units represented by the general formula CH2?CH—COOR1 (1) (wherein R1 represents a C4-C12 organic group).Type: ApplicationFiled: October 4, 2019Publication date: November 11, 2021Applicant: KURARAY CO., LTD.Inventors: Moe KAWAHARA, Makoto AKAI, Kanayo NAKADA, Tomohiro ONO
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Publication number: 20210332163Abstract: A process for anionically polymerizing a (meth)acrylic acid in the presence of a tertiary organoaluminum compound (A), an organolithium compound (B) and at least one kind of a Lewis base (C) in a polymerization system. The tertiary organoaluminum compound (A) includes a tertiary organoaluminum compound (A1) having a chemical structure in which at least two of three unshared electrons of an aluminum atom are bonded to an aromatic ring via an oxygen atom, and the tertiary organoaluminum compound (A) has a molar ratio (A2)/(A1) in the range of 0% or above and 0.8% or below between a tertiary organoaluminum compound (A2) having a chemical structure in which at most one of three unshared electrons of an aluminum atom is bonded to an aromatic ring via an oxygen atom, and the tertiary organoaluminum compound (A1).Type: ApplicationFiled: August 22, 2019Publication date: October 28, 2021Applicant: KURARAY CO., LTD.Inventors: Moe KAWAHARA, Tomohiro ONO
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Publication number: 20210115197Abstract: Pellets of an acrylic block copolymer are provided which are imparted with sufficient antiblocking properties without deterioration in the outstanding performance of the acrylic block copolymer such as transparency. A method for producing pellets (D) including an acrylic block copolymer (A) includes bringing raw pellets of an acrylic block copolymer (A) into contact with an aqueous dispersion (C) containing acrylic resin particles (B) and no surfactants, the acrylic block copolymer (A) including at least one polymer block (a1) including acrylic acid alkyl ester units and at least one polymer block (a2) including methacrylic acid alkyl ester units, and removing water attached to the pellets.Type: ApplicationFiled: May 28, 2019Publication date: April 22, 2021Applicant: KURARAY CO., LTD.Inventors: Makoto AKAI, Tomohiro ONO, Moe KAWAHARA
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Patent number: 9969911Abstract: Provided are an adhesive composition suitable for a hot-melt adhesive which has a low tack and which after adhering to an adherend and through heat treatment comes to have sufficient adhesive force; and an adhesive product using the adhesive composition. The hot-melt adhesive composition includes an acrylic block copolymer (I) having at least one polymer block (A) including methacrylic acid ester units and at least one polymer block (B) including acrylic acid ester units, wherein the acrylic acid ester units constituting the polymer block (B) contain an acrylic acid ester (1) represented by CH2?CH—COOR1 (1) (wherein R1 is an organic group having 1 to 3 carbon atoms) and an acrylic acid ester (2) represented by CH2?CH—COOR2 (2) (wherein R2 is an organic group having 4 to 12 carbon atoms), and a mass ratio (1)/(2) of the acrylic acid ester (1) to the acrylic acid ester (2) is 90/10 to 25/75.Type: GrantFiled: October 20, 2014Date of Patent: May 15, 2018Assignee: KURARAY CO., LTD.Inventors: Kanayo Nakada, Moe Kawahara, Yoshihiro Morishita
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Publication number: 20160244647Abstract: Provided are an adhesive composition suitable for a hot-melt adhesive which has a low tack and which after adhering to an adherend and through heat treatment comes to have sufficient adhesive force; and an adhesive product using the adhesive composition. The hot-melt adhesive composition includes an acrylic block copolymer (I) having at least one polymer block (A) including methacrylic acid ester units and at least one polymer block (B) including acrylic acid ester units, wherein the acrylic acid ester units constituting the polymer block (B) contain an acrylic acid ester (1) represented by CH2?CH—COOR1 (1) (wherein R1 is an organic group having 1 to 3 carbon atoms) and an acrylic acid ester (2) represented by CH2?CH—COOR2 (2) (wherein R2 is an organic group having 4 to 12 carbon atoms), and a mass ratio (1)/(2) of the acrylic acid ester (1) to the acrylic acid ester (2) is 90/10 to 25/75.Type: ApplicationFiled: October 20, 2014Publication date: August 25, 2016Inventors: Kanayo NAKADA, Moe KAWAHARA, Yoshihiro MORISHITA