Patents by Inventor Ryouji Oda
Ryouji Oda 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: 9193893Abstract: Disclosed is a block copolymer composition for a hot melt adhesive, comprising a block copolymer A and a block copolymer B each having a particular structure, characterized in that the aromatic vinyl monomer unit content of the block copolymer A is 30% to 50% by weight; the aromatic vinyl monomer unit content of the block copolymer B is 15% to 25% by weight; a content of the aromatic vinyl monomer units relative to all polymer components of the block copolymer composition is 18% to 45% by weight; the weight ratio (A/B) of the block copolymer A with respect to the block copolymer B is 20/80 to 80/20; and the ratio (MwA/MwB) of the weight average molecular weight of the block copolymer A (MwA) with respect to the weight average molecular weight of the block copolymer B (MwB) is 0.65 to 1.5.Type: GrantFiled: December 26, 2012Date of Patent: November 24, 2015Assignee: ZEON CORPORATIONInventors: Ryouji Oda, Ayako Furuko
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Publication number: 20140350164Abstract: Provided is a block copolymer composition for a hot melt adhesive, which can provide a hot melt adhesive composition having excellent softening agent retainability, heat resistance and transparency. Disclosed is a block copolymer composition for a hot melt adhesive, comprising a block copolymer A and a block copolymer B each having a particular structure, characterized in that the aromatic vinyl monomer unit content of the block copolymer A is 30% to 50% by weight; the aromatic vinyl monomer unit content of the block copolymer B is 15% to 25% by weight; a content of the aromatic vinyl monomer units relative to all polymer components of the block copolymer composition is 18% to 45% by weight; the weight ratio (A/B) of the block copolymer A with respect to the block copolymer B is 20/80 to 80/20; and the ratio (MwA/MwB) of the weight average molecular weight of the block copolymer A (MwA) with respect to the weight average molecular weight of the block copolymer B (MwB) is 0.65 to 1.5.Type: ApplicationFiled: December 26, 2012Publication date: November 27, 2014Inventors: Ryouji Oda, Ayako Furuko
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Patent number: 8791196Abstract: Provided is an adhesive composition for labels, which can be easily applied at a relatively low temperature and has satisfactory die cutting properties so that the adhesive composition can contribute to an improvement of the productivity of labels, and which is capable of producing labels having excellent holding power and tackiness. There is disclosed an adhesive composition for labels comprising: a block copolymer A represented by the following general formula (A); a polymer C, which is a polymer having a glass transition temperature of ?30° C. or lower, or a block copolymer that has a polymer block having a glass transition temperature of ?30° C. or lower at an end of the polymer chain; and a tackifier resin D.Type: GrantFiled: March 29, 2010Date of Patent: July 29, 2014Assignee: Zeon CorporationInventors: Ryouji Oda, Sadaharu Hashimoto
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Patent number: 8722800Abstract: The present invention provides a composition for a stretchable film, which achieves a high-level balance between a high elastic modulus and a small permanent elongation, which is excellent in adhesive force when laminated with a non-woven fabric or the like, and also has good formability.Type: GrantFiled: June 24, 2010Date of Patent: May 13, 2014Assignee: Zeon CorporationInventors: Ryouji Oda, Sadaharu Hashimoto
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Patent number: 8598271Abstract: An object of the present invention is to provide a block copolymer composition containing an aromatic vinyl-conjugated diene-aromatic vinyl block copolymer, which is capable of achieving a high-level balance between a high elastic modulus and a small permanent set, and is capable of producing a highly isotropic molded product having uniform mechanical properties even when a molding method which is likely to cause molecular orientation, such as extrusion molding, is applied.Type: GrantFiled: December 25, 2009Date of Patent: December 3, 2013Assignee: Zeon CorporationInventors: Ryouji Oda, Takeshi Ooishi
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Patent number: 8578852Abstract: Disclosed is a block copolymer composition for flexographic printing plates, which is capable of providing a flexographic printing plate that has much more excellent wear resistance than conventional flexographic printing plates, while maintaining sufficient rubber elasticity. The block copolymer composition for flexographic printing plates comprises a block copolymer A and a block copolymer B, each of which is an aromatic vinyl-conjugated diene-aromatic vinyl block copolymer having a specific structure, wherein a content of the aromatic vinyl monomer unit in the block copolymer A is 41% or more.Type: GrantFiled: February 24, 2010Date of Patent: November 12, 2013Assignee: Zeon CorporationInventors: Tetsuaki Matsubara, Ryouji Oda
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Patent number: 8501869Abstract: Provided is a hot-melt adhesive composition which can be easily applied at a relatively low temperature, has a long open time, and also has high holding power. A hot-melt adhesive composition comprising a block copolymer composition which includes a block copolymer A and a block copolymer B, and a tackifying resin, wherein a weight ratio (A/B) of the block copolymer A and the block copolymer B is 25/75 to 90/10, and an aromatic vinyl monomer unit content of the block copolymer A is 41% or greater.Type: GrantFiled: December 25, 2009Date of Patent: August 6, 2013Assignee: Zeon CorporationInventors: Ryouji Oda, Sadaharu Hashimoto, Ayako Furuko
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Patent number: 8492480Abstract: A block copolymer composition comprising an aromatic vinyl-conjugated diene-aromatic vinyl block copolymer having a high-level balance between a high elastic modulus and a small elongation set is provided. The block copolymer composition comprises a block copolymer A represented by formula (A) and a block copolymer B represented by formula (B), where the weight ratio of the block copolymer A to the block copolymer B, A/B, is from 36/64 to 85/15 and the ratio of the aromatic vinyl monomer units relative to all polymer components in the block copolymer composition is 27-70 wt %. Ar1a-Da-Ar2a (A). Ar1b-Db-Ar2b (B).Type: GrantFiled: March 30, 2009Date of Patent: July 23, 2013Assignee: Zeon CorporationInventors: Takeshi Ooishi, Ryouji Oda
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Publication number: 20120088423Abstract: The present invention provides a composition for a stretchable film, which achieves a high-level balance between a high elastic modulus and a small permanent elongation, which is excellent in adhesive force when laminated with a non-woven fabric or the like, and also has good formability.Type: ApplicationFiled: June 24, 2010Publication date: April 12, 2012Applicant: ZEON CORPORATIONInventors: Ryouji Oda, Sadaharu Hashimoto
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Publication number: 20110319549Abstract: Provided is an adhesive composition for labels, which can be easily applied at a relatively low temperature and has satisfactory die cutting properties so that the adhesive composition can contribute to an improvement of the productivity of labels, and which is capable of producing labels having excellent holding power and tackiness. There is disclosed an adhesive composition for labels comprising: a block copolymer A represented by the following general formula (A); a polymer C, which is a polymer having a glass transition temperature of ?30° C. or lower, or a block copolymer that has a polymer block having a glass transition temperature of ?30° C. or lower at an end of the polymer chain; and a tackifier resin D.Type: ApplicationFiled: March 29, 2010Publication date: December 29, 2011Inventors: Ryouji Oda, Sadaharu Hashimoto
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Publication number: 20110308412Abstract: Disclosed is a block copolymer composition for flexographic printing plates, which is capable of providing a flexographic printing plate that has much more excellent wear resistance than conventional flexographic printing plates, while maintaining sufficient rubber elasticity. The block copolymer composition for flexographic printing plates comprises a block copolymer A and a block copolymer B, each of which is an aromatic vinyl-conjugated diene-aromatic vinyl block copolymer having a specific structure, wherein a content of the aromatic vinyl monomer unit in the block copolymer A is 41% or more.Type: ApplicationFiled: February 24, 2010Publication date: December 22, 2011Inventors: Tetsuaki Matsubara, Ryouji Oda
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Publication number: 20110257336Abstract: An object of the present invention is to provide a block copolymer composition containing an aromatic vinyl-conjugated diene-aromatic vinyl block copolymer, which is capable of achieving a high-level balance between a high elastic modulus and a small permanent set, and is capable of producing a highly isotropic molded product having uniform mechanical properties even when a molding method which is likely to cause molecular orientation, such as extrusion molding, is applied.Type: ApplicationFiled: December 25, 2009Publication date: October 20, 2011Inventors: Ryouji Oda, Takeshi Ooishi
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Publication number: 20110257337Abstract: Provided is a hot-melt adhesive composition which can be easily applied at a relatively low temperature, has a long open time, and also has high holding power. A hot-melt adhesive composition comprising a block copolymer composition which includes a block copolymer A and a block copolymer B, and a tackifying resin, wherein a weight ratio (A/B) of the block copolymer A and the block copolymer B is 25/75 to 90/10, and an aromatic vinyl monomer unit content of the block copolymer A is 41% or greater.Type: ApplicationFiled: December 25, 2009Publication date: October 20, 2011Inventors: Ryouji Oda, Sadaharu Hashimoto, Ayako Furuko