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公开(公告)号：US20210222366A1
公开(公告)日：2021-07-22
申请号：US16324237
申请日：2017-08-07
发明人： Rina TANAKA , Koh SAKAI , Hirokazu SUNAGAWA
摘要： It is an object of the present invention to provide a composition comprising cellulose fibers having a fiber width of 1000 nm or less, the properties of which are maintained even after long-term storage. The present invention relates to a cellulose fiber-containing composition comprising cellulose fibers having a fiber width of 1000 nm or less and an antiseptic containing at least one type selected from a nitrogen atom, a sulfur atom and a halogen atom, wherein the content of the antiseptic is 10 parts by mass or less with respect to 100 parts by mass of the cellulose fibers
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公开(公告)号：US20180230279A1
公开(公告)日：2018-08-16
申请号：US15750031
申请日：2016-08-05
发明人： Go BANZASHI , Koh SAKAI , Yuichi NOGUCHI
CPC分类号： C08J5/18 , B32B5/02 , B32B5/26 , B32B7/02 , C08B5/00 , C08B15/02 , C08J2301/10 , C08J2301/16 , C08L1/02 , C08L1/04 , C08L1/16 , D01F1/10 , D01F2/00 , D01F2/24 , D10B2201/20 , D21H11/18 , D21H11/20 , D21H17/64 , D21H17/66 , D21H21/20 , D21H25/02
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：US20210275407A1
公开(公告)日：2021-09-09
申请号：US16960778
申请日：2019-01-08
发明人： Emi AIZAWA , Koh SAKAI
摘要： The present invention is intended to provide an ultrafine cellulose fiber-containing wet sheet, which is easily handled upon the use thereof and is excellent in terms of adhesiveness to the skin. The present invention relates to a sheet comprising cellulose fibers having a fiber width of 1000 nm or less and water, wherein the sheet is gelatinous, the cellulose fibers have ionic substituents, the water content percentage is 70% by mass or more with respect to the total mass of the sheet, and the tensile strength is 0.08 MPa or more.
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公开(公告)号：US20210009771A1
公开(公告)日：2021-01-14
申请号：US16955534
申请日：2018-12-18
发明人： Koh SAKAI , Hayato FUSHIMI
摘要： It is an object of the present invention to provide an ultrafine cellulose fiber-containing sheet that is excellent in terms of weather resistance. The present invention relates to a sheet comprising cellulose fibers having a fiber width of 1000 nm or less, wherein the cellulose fibers have anionic functional groups, and the YI increase percentage calculated according to the following equation is 1500% or less. YI increase percentage (%)=(yellowness of the sheet after heating−yellowness of the sheet before heating)/yellowness of the sheet before heating×100, wherein the yellowness of the sheet after heating is a yellowness measured in accordance with JIS K 7373, after the sheet is subjected to hot pressing at 180° C. at 0.5 MPa for 1 minute, whereas the yellowness of the sheet before heating is a yellowness measured in accordance with JIS K 7373, before the sheet is subjected to the hot pressing.
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公开(公告)号：US20190040213A1
公开(公告)日：2019-02-07
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 , C08J3/03 , C08K7/02 , C08L1/02 , C08L101/12
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：US20210301095A1
公开(公告)日：2021-09-30
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：US20190055697A1
公开(公告)日：2019-02-21
申请号：US16076900
申请日：2017-02-09
发明人： Koh SAKAI , Go BANZASHI , Hirokazu SUNAGAWA , Hayato FUSHIMI
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：US20180371696A1
公开(公告)日：2018-12-27
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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