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公开(公告)号：US11447612B2
公开(公告)日：2022-09-20
申请号：US16315723
申请日：2017-07-07
发明人： Koh Sakai , Hayato Fushimi , Hirokazu Sunagawa
摘要： The purpose of the present invention is to provide a composite sheet in which the dimension stability when it is tensed is high and the appearance deterioration and the yellowness change are suppressed. The present invention relates to a sheet comprising; cellulose fibers having a fiber width of 1000 nm or less and having a phosphoric acid group or a phosphoric acid group-derived substituent; and a polyvinyl alcohol-based resin, wherein the sheet has a tensile elastic modulus of 3.4 GPa or more.
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公开(公告)号：US10808361B2
公开(公告)日：2020-10-20
申请号：US15779612
申请日：2016-11-25
发明人： Hirokazu Sunagawa , Koh Sakai , Hayato Fushimi , Go Banzashi
摘要： It is an object of the present invention to provide a composite sheet, which achieves all of water repellency, water resistance, transparency and mechanical strength. The present invention relates to a sheet having a fiber layer and a coating layer on the fiber layer, wherein the fiber layer comprises ultrafine cellulose fibers having a fiber width of 1000 nm or less in an amount of 60% by mass or more, the haze of the sheet is 20% or less, and the water contact angle of the surface of the sheet on the side of the coating layer which is measured 30 seconds after completion of the dropping of distilled water is 70 degrees or more.
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公开(公告)号：US11034806B2
公开(公告)日：2021-06-15
申请号：US16074638
申请日：2017-02-03
发明人： Yoshiyuki Tsutsumi , Koh Sakai , Yuichi Noguchi
IPC分类号： C08J5/06 , C08L1/02 , C08B5/00 , C08L29/04 , C08K7/02 , C08J3/03 , C08L101/12 , C08K3/30 , C08K3/16
摘要： It is an object of the present invention to provide a resin composite that is excellent in water resistance and is capable of exerting sufficient strength even under wet conditions. The present invention relates to a resin composite comprising a resin, fibers having an ionic functional group, and a polyvalent ion. The fibers having an ionic functional group are preferably cellulose fibers having a fiber width of 1000 nm or less.
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公开(公告)号：US10899899B2
公开(公告)日：2021-01-26
申请号：US15750031
申请日：2016-08-05
发明人： Go Banzashi , Koh Sakai , Yuichi Noguchi
IPC分类号： C08J5/18 , D21H11/18 , D01F1/10 , D01F2/00 , B32B7/02 , B32B5/02 , D21H25/02 , D21H11/20 , D21H17/64 , C08B15/02 , C08L1/04 , D21H21/20 , C08L1/02 , D21H17/66 , C08B5/00 , C08L1/16 , B32B5/26 , D01F2/24
摘要： An object of the present invention is to improve the strength of a sheet containing substituent-introduced ultrafine fiber under high-humidity conditions while maintaining its high transparency. The sheet of the present invention comprises ultrafine fiber having an ionic substituent, and a divalent or higher metal, and has a haze of 10.0% or less.
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公开(公告)号：US11346053B2
公开(公告)日：2022-05-31
申请号：US16076900
申请日：2017-02-09
发明人： Koh Sakai , Go Banzashi , Hirokazu Sunagawa , Hayato Fushimi
IPC分类号： D21H21/20 , D21H17/56 , D21H17/37 , D21H17/41 , D21H11/20 , C08G69/48 , C08J5/18 , D21H11/18 , C08L1/00 , C08L77/00
摘要： It is an object of the present invention is to provide a sheet containing ultrafine cellulose fibers, which is excellent in transparency and water resistance. The present invention relates to a sheet including cellulose fibers having a fiber width of 1000 nm or less, and polyamine polyamide epihalohydrin, wherein the haze of the sheet is 6% or less.
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公开(公告)号：US10968324B2
公开(公告)日：2021-04-06
申请号：US16074638
申请日：2017-02-03
发明人： Yoshiyuki Tsutsumi , Koh Sakai , Yuichi Noguchi
IPC分类号： C08J5/06 , C08L1/02 , C08B5/00 , C08L29/04 , C08K7/02 , C08J3/03 , C08L101/12 , C08K3/30 , C08K3/16
摘要： It is an object of the present invention to provide a resin composite that is excellent in water resistance and is capable of exerting sufficient strength even under wet conditions. The present invention relates to a resin composite comprising a resin, fibers having an ionic functional group, and a polyvalent ion. The fibers having an ionic functional group are preferably cellulose fibers having a fiber width of 1000 nm or less.
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