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公开(公告)号：US20190216971A1
公开(公告)日：2019-07-18
申请号：US16335082
申请日：2017-09-29
Applicant: Toray Industries, Inc. , Nanotheta Co., Ltd.
Inventor： Akihiro Saito , Megumi Nakanishi , Kazuhiro Tanahashi , Toru Arakane , Motonori Hochi , Ai Suzuki , Koji Okabayashi , Shinji Takeoka , Toshinori Fujie , Yuya Ishizuka , Shinya Ohtsubo
CPC classification number: A61L15/26 , A61L15/28 , A61L15/64 , A61L31/06 , A61L31/12 , A61L31/125 , A61L31/14 , A61L31/145 , A61L31/148 , A61P41/00 , C08G65/2615 , C08L5/08
Abstract: A material for adhesion prevention can be adhered to biological tissue with certainty and has improved tissue adhesiveness and biodegradability. Such material for adhesion prevention is composed of: a 1- to 1,000-μm-thick water-soluble support layer comprising a water-soluble polymer; and a 1- to 1,000-μm-thick adhesion prevention layer comprising a biodegradable polymer. The biodegradable polymer has a structure in which a branched polyalkylene glycol comprising 3 to 8 terminal hydroxyl groups per molecule is bound to a polyhydroxy alkanoic acid, and a mass ratio of the branched polyalkylene glycol relative to the total mass is 1% to 30%.
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Patent Agency Ranking
公开(公告)号：US10786603B2
公开(公告)日：2020-09-29
申请号：US15300343
申请日：2015-03-31
Applicant: Toray Industries, Inc.
Inventor： Teruhisa Sato , Yoshikazu Yakake , Toru Arakane , Ai Suzuki
IPC: A61L31/14 , A61L31/10 , B32B5/26 , B32B3/26 , B32B7/02 , A61L31/04 , B32B5/02 , B32B27/36 , D01D5/00
Abstract: A multilayer sheet can be used in vivo or in an environment in which moisture is adhered, an integrated sheet including the multilayer sheet and a base material, and methods for producing the same. The multilayer sheet has one or more layers from each of a layer (A) composed of sparingly water-soluble polymer and a fiber layer (B) composed of water-soluble polymer are laminated, and at least one of outermost layers is the above-described layer (A) composed of sparingly water-soluble polymer. The time taken from dropping of water onto a surface of the outermost layer of the above-described layer (A) composed of sparingly water-soluble polymer to dissolution of the other outermost layer is 10 seconds to 5 minutes.
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公开(公告)号：US20170136157A1
公开(公告)日：2017-05-18
申请号：US15300343
申请日：2015-03-31
Applicant: Toray Industries, Inc.
Inventor： Teruhisa Sato , Yoshikazu Yakake , Toru Arakane , Ai Suzuki
Abstract: A multilayer sheet can be used in vivo or in an environment in which moisture is adhered, an integrated sheet including the multilayer sheet and a base material, and methods for producing the same. The multilayer sheet has one or more layers from each of a layer (A) composed of sparingly water-soluble polymer and a fiber layer (B) composed of water-soluble polymer are laminated, and at least one of outermost layers is the above-described layer (A) composed of sparingly water-soluble polymer. The time taken from dropping of water onto a surface of the outermost layer of the above-described layer (A) composed of sparingly water-soluble polymer to dissolution of the other outermost layer is 10 seconds to 5 minutes.
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公开(公告)号：US10940229B2
公开(公告)日：2021-03-09
申请号：US16335082
申请日：2017-09-29
Applicant: Toray Industries, Inc. , Nanotheta Co., Ltd.
Inventor： Akihiro Saito , Megumi Nakanishi , Kazuhiro Tanahashi , Toru Arakane , Motonori Hochi , Ai Suzuki , Koji Okabayashi , Shinji Takeoka , Toshinori Fujie , Yuya Ishiduka , Shinya Ohtsubo
IPC: A61L15/26 , A61L31/14 , A61L31/12 , A61L31/06 , A61L15/64 , A61L15/28 , A61P41/00 , C08G65/26 , C08L5/08
Abstract: A material for adhesion prevention can be adhered to biological tissue with certainty and has improved tissue adhesiveness and biodegradability. Such material for adhesion prevention is composed of: a 1- to 1,000-μm-thick water-soluble support layer comprising a water-soluble polymer; and a 1- to 1,000-μm-thick adhesion prevention layer comprising a biodegradable polymer. The biodegradable polymer has a structure in which a branched polyalkylene glycol comprising 3 to 8 terminal hydroxyl groups per molecule is bound to a polyhydroxy alkanoic acid, and a mass ratio of the branched polyalkylene glycol relative to the total mass is 1% to 30%.
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公开(公告)号：US10435838B2
公开(公告)日：2019-10-08
申请号：US15301154
申请日：2015-03-20
Applicant: TORAY INDUSTRIES, INC.
Inventor： Masaru Masaki , Katsuya Okajima , Tomoharu Hirose , Ai Suzuki , Satoshi Yanagisawa
Abstract: A dyed artificial leather includes a fibrous base containing ultrafine fibers with a filament fineness of 2 decitex or less and a polymeric elastomer, and characterized in that the lightness difference ΔL* between the ultrafine fibers and the polymeric elastomer represented by the following equation meet the requirement of −16≤ΔL*≤5: ΔL*=(average lightness L* of ultrafine fibers)−(average lightness L* of polymeric elastomer). A production method for dyed artificial leather includes a first dying step in which artificial leather constituted mainly of a fibrous base containing ultrafine fibers with a filament fineness of 2 decitex or less and a polymeric elastomer is dyed using a dye and a subsequent second dyeing step performed at a dye concentration that is 0.1% to 30% of the dye concentration (owf) in the first dyeing step.
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公开(公告)号：US20170022659A1
公开(公告)日：2017-01-26
申请号：US15301154
申请日：2015-03-20
Applicant: TORAY INDUSTRIES, INC.
Inventor： Masaru Masaki , Katsuya Okajima , Tomoharu Hirose , Ai Suzuki , Satoshi Yanagisawa
CPC classification number: D06N3/0004 , D06N3/0011 , D06N3/0034 , D06N3/0036 , D06N3/14 , D06N2211/28 , D06P1/002
Abstract: A dyed artificial leather includes a fibrous base containing ultrafine fibers with a filament fineness of 2 decitex or less and a polymeric elastomer, and characterized in that the lightness difference ΔL* between the ultrafine fibers and the polymeric elastomer represented by the following equation meet the requirement of −16≦ΔL*≦5: ΔL*=(average lightness L* of ultrafine fibers)−(average lightness L* of polymeric elastomer). A production method for dyed artificial leather includes a first dying step in which artificial leather constituted mainly of a fibrous base containing ultrafine fibers with a filament fineness of 2 decitex or less and a polymeric elastomer is dyed using a dye and a subsequent second dyeing step performed at a dye concentration that is 0.1% to 30% of the dye concentration (owf) in the first dyeing step.
Abstract translation: 染色人造革包括含有细丝纤度为2分特或更小的超细纤维的纤维基质和聚合物弹性体，其特征在于，超细纤维与由下列等式表示的聚合弹性体之间的亮度差ΔL*满足要求 -16≤ΔL*≤5:ΔL* =（超细纤维的平均亮度L *） - （高分子弹性体的平均亮度L *）。 染色人造皮革的制造方法包括第一染色步骤，其中主要由含有细丝纤度为2分特或更小的超细纤维的纤维基质和聚合物弹性体构成的人造革用染料染色，随后进行第二染色步骤 染料浓度为第一染色步骤中染料浓度（owf）的0.1％至30％。
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