-
公开(公告)号：US11208550B2
公开(公告)日：2021-12-28
申请号：US16473773
申请日：2017-12-27
申请人： KURARAY CO., LTD.
摘要： There is provided a composition (C) comprising a modified PVA (A) and a compound (B), wherein the modified PVA (A) contains 0.01 mol % or more and less than 2 mol % of double bonds derived from an unsaturated carboxylic acid or a derivative thereof in side chains; the compound (B) is a compound having a conjugated double bond and two or more hydroxy groups bonded to the conjugated double bond, or a salt or oxide thereof; and a content of the compound (B) in the composition (C) is 0.001 parts by mass or more and less than 5 parts by mass based on 100 parts by mass of the modified PVA (A). The composition (C) has excellent hue, contains less insolubles in water, and has excellent water solubility.
-
公开(公告)号：US20240040980A1
公开(公告)日：2024-02-08
申请号：US18268574
申请日：2021-12-22
申请人： Kuraray Co., Ltd.
发明人： Taeko Kaharu , Yoriko Imaoka , Yasuhiro Tajima
摘要： Provided are: a culture fluid for hydroponics accompanied by a large amount of water absorption by plants; an additive for a culture fluid, the additive enabling such a culture fluid to be readily prepared; and a cultivation method in which the same is used. A culture fluid for hydroponics contains water-soluble polymeric molecules, and has a surface tension at 20° C. of 45 mN/m or more and 70 mN/m or less, and a kinematic viscosity at 30° C. of 0.8 mm2/s or more and 2.00 mm2/s or less.
-
公开(公告)号：US11944093B2
公开(公告)日：2024-04-02
申请号：US16978509
申请日：2019-03-07
申请人： KURARAY CO., LTD.
发明人： Taeko Kaharu , Keisuke Morikawa
摘要： The present invention provides a spreading agent for agrochemicals having superior adhesion particularly for plant surface. The present invention also provides an agrochemical spray solution having a reduced risk of leaving the spreading agent for agrochemicals on a plant surface. The present invention relates to a spreading agent for agrochemicals comprising a carboxy-modified vinyl alcohol polymer (A) having a carboxy-containing monomer unit content of 0.1 mol % to 10 mol %, a viscosity-average degree of polymerization of 200 to 5,000, and a degree of saponification of 65 mol % to 99.9 mol %.
-
公开(公告)号：US11352751B2
公开(公告)日：2022-06-07
申请号：US16498507
申请日：2018-03-29
申请人： KURARAY CO., LTD.
发明人： Keisuke Morikawa , Taeko Kaharu
摘要： Release paper base paper, includes: a substrate; and a coating agent containing a polyvinyl alcohol (A) and a compound (B), the substrate coated with the coating agent, wherein the compound (B) is unsaturated carboxylic acid or a derivative thereof having a pKa of less than 4.00, and 0.1 part by mass or more and 20 parts by mass or less of the compound (B) is contained based on 100 parts by mass of the polyvinyl alcohol (A). The release paper base paper of the present invention is excellent in sealing properties for silicone and waterproofness. The release paper base paper of the present invention is also capable of accelerating curing of silicone in a release layer.
-
公开(公告)号：US11643781B2
公开(公告)日：2023-05-09
申请号：US16498879
申请日：2018-03-29
申请人： KURARAY CO., LTD.
CPC分类号： D21H19/12 , C08F8/02 , C08F16/06 , D21H19/32 , D21H27/001
摘要： Release paper base paper includes a substrate; and a coating agent containing a modified polyvinyl alcohol (A) and sodium acetate, the substrate coated with the coating agent, wherein the modified polyvinyl alcohol (A) has 0.005 mol % or more and less than 10 mol % of double bonds derived from unsaturated carboxylic acid or a derivative thereof (B) in side chains, has 1.4 mol % or more and 2.0 mol % or less of 1,2-glycol bond, units, and is water soluble, and a content of the sodium acetate relative to the modified polyvinyl alcohol (A) is 0.01 mass % or more and 10 mass % or less. The release paper base paper of the present invention is excellent in sealing properties for silicone. Use of the release paper base paper allows acceleration of curing of silicone in a release layer and improvement in adhesion between the substrate and the release layer.
-
公开(公告)号：US11641853B2
公开(公告)日：2023-05-09
申请号：US16641002
申请日：2018-08-24
申请人： KURARAY CO., LTD.
发明人： Keisuke Morikawa , Taeko Kaharu
IPC分类号： A01N25/24 , C08F216/06 , C08F16/06 , C08L23/08
CPC分类号： A01N25/24 , C08F16/06 , C08F216/06 , C08L23/0846 , C08F2800/10
摘要： The present invention provides a spreading agent for agrochemicals having excellent spreadability particularly against surfaces of plant leaves. The present invention also provides an agrochemical spray solution comprising the spreading agent for agrochemicals, and that shows excellent storage stability (particularly viscosity stability) even during long storage. The present invention relates to a spreading agent for agrochemicals that comprises an ethylene-modified vinyl alcohol polymer (A) having an ethylene unit content of 1.0 mol % to 19 mol %, a 1,2-glycol linkage unit content of 1.2 mol % to 2.0 mol %, a viscosity-average degree of polymerization of 200 to 5,000, and a degree of saponification of 80 mol % to 99.9 mol %.
-
公开(公告)号：US20230118744A1
公开(公告)日：2023-04-20
申请号：US17915740
申请日：2021-03-26
申请人： KURARAY CO., LTD.
发明人： Taeko Kaharu , Yoriko Imaoka , Yuta Taoka , Ayumu Yamamoto
IPC分类号： C08F216/06 , C08L23/08 , D21H19/34 , D21H19/22 , C08K7/02 , C09J11/06 , C09J123/08
摘要： The present invention provides an aqueous dispersion that enables production of a film having improved water resistance, tensile elastic modulus, and stress at break, and with which a decrease of strain at break can be reduced in the film. The present invention relates to an aqueous dispersion comprising an ethylene-vinyl alcohol copolymer (A) and a cellulose nanofiber, the ethylene unit content of the ethylene-vinyl alcohol copolymer (A) being 1 mol % or more and less than 20 mol %.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.013 秒)
