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公开(公告)号：US20160030919A1
公开(公告)日：2016-02-04
申请号：US14759762
申请日：2014-11-04
CPC分类号： B01J20/261 , A61L15/60 , B01J20/3085 , C08F2/32 , C08F220/06
摘要： The present invention provides a process for producing a water-absorbent resin, characterized in that a reverse-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer is carried out in a hydrocarbon dispersion medium comprising a dispersion stabilizer while an azo-based compound and a peroxide are combined in the presence of an internal-crosslinking agent, in that the following formulae are satisfied, 0.10≦B/(A+B) (1), and 0.055≦B+9×C≦0.120 (2), wherein A mol, B mol and C mol represent used amounts of the azo-based compound, the peroxide and the internal-crosslinking agent, respectively, relative to 100 mol of the water-soluble ethylenically unsaturated monomer used in the polymerization, and in that a post-crosslinking reaction is carried out by adding a post-crosslinking agent after the polymerization. The present invention also relates to a water-absorbent resin having specific performance and produced by the process.
摘要翻译： 本发明提供一种吸水性树脂的制造方法，其特征在于，在包含分散稳定剂的烃分散介质中进行水溶性烯属不饱和单体的反相悬浮聚合，而偶氮类化合物和 在内部交联剂的存在下将过氧化物组合，其中满足下列公式：0.10＆nlE; B /（A + B）（1）和0.055＆amp; NlE; B + 9×C＆nlE; 0.120（2） 其中A mol，B mol和C mol分别表示相对于聚合中使用的水溶性烯属不饱和单体100摩尔的偶氮类化合物，过氧化物和内部交联剂的使用量， 通过在聚合后添加后交联剂进行后交联反应。 本发明还涉及具有特定性能并通过该方法生产的吸水性树脂。
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公开(公告)号：US20240294715A1
公开(公告)日：2024-09-05
申请号：US18561119
申请日：2022-04-14
发明人： Hiroki SAWAKI , Tomoka YAMAMOTO
CPC分类号： C08J3/126 , B01J20/261 , B01J20/267 , B01J20/327 , B01J20/3272 , C08F20/06 , C08F210/02 , C08L71/02 , C08J2323/08 , C08J2333/02 , C08J2371/02 , C08L2201/52
摘要： The present invention is related to a coated resin particle that includes a water-absorbent resin particle, and a coating layer covering at least a part of a surface of the water-absorbent resin particle, in which the coating layer contains a compound A, and a compound B more water-soluble than the compound A.
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公开(公告)号：US20240294386A1
公开(公告)日：2024-09-05
申请号：US18571878
申请日：2022-06-16
发明人： Hirotaka NAKAJIMA , Hiroyasu SATO
CPC分类号： C01B32/40 , B01J8/0278 , B01J29/06 , B01J35/615 , B01J35/617
摘要： Provided is a method for manufacturing carbon monoxide, including a step of generating carbon monoxide by a decomposition reaction of at least one raw material of formic acid or formic acid alkyl ester in the presence of a solid acid catalyst, in which the solid acid catalyst has a BET specific surface area of 590 m2/g or less.
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公开(公告)号：US20240261159A1
公开(公告)日：2024-08-08
申请号：US18565470
申请日：2022-05-30
发明人： Miki SAKODA
IPC分类号： A61F13/531 , A61F13/15 , A61F13/53
CPC分类号： A61F13/531 , A61F2013/15406 , A61F2013/15471 , A61F2013/530839 , A61F2013/5315
摘要： Provided is an absorbent article which exhibits a better permeation rate and in which occurrence of leakage is suppressed. An absorbent article comprising: a liquid-permeable front surface sheet; a liquid-impermeable back surface sheet; and an absorbent body disposed between the front and back surface sheets, wherein the absorbent body contains a water-absorbent resin, and the water-absorbent resin has properties (A)-(C). (A) The amount of saline that can be retained is 45-70 g/g. (B) The amount of saline that can be absorbed under a load of 4.14 kPa is at least 13 ml/g. (C) The five-minute value of no-pressure DW is 50-80 ml/g.
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公开(公告)号：US12030987B2
公开(公告)日：2024-07-09
申请号：US17425474
申请日：2020-01-21
发明人： Kiyoshi Nishioka , Yusuke Ueba , Akemi Kirihata
IPC分类号： C08G64/02 , C08G64/40 , C09D11/102 , C09D169/00 , C09J169/00
CPC分类号： C08G64/0216 , C08G64/40 , C09D11/102 , C09D169/00 , C09J169/00
摘要： An object of this invention is to find a method for introducing a functional group into an aliphatic polycarbonate without impairing the excellent thermal decomposition property of the aliphatic polycarbonate.
An aliphatic polycarbonate comprising a constituent unit represented by formula (1):
wherein R1, R2, and R3 are identical or different, and each represents a hydrogen atom, a C1-10 alkyl group optionally substituted with one or more substituents, or a C6-20 aryl group optionally substituted with one or more substituents, wherein two groups from among R1 to R3, taken together with the carbon atom or carbon atoms to which these groups are attached, may form a substituted or unsubstituted, saturated or unsaturated 3- to 10-membered aliphatic ring; and X represents a divalent group containing one or more heteroatoms or an alkylene group having 3 or more carbon atoms, and
a constituent unit represented by formula (2):
wherein R4, R5, R6, and R7 are identical or different, and each represents a hydrogen atom, a C1-10 alkyl group optionally substituted with one or more substituents, or a C6-20 aryl group optionally substituted with one or more substituents, wherein two groups from among R4 to R7, taken together with the carbon atom or carbon atoms to which these groups are attached, may form a substituted or unsubstituted, saturated or unsaturated 3- to 10-membered aliphatic ring,
the content of the constituent unit represented by formula (1) being 0.1 mol % or more and 1.5 mol % or less, based on the total amount of the constituent units of formula (1) and formula (2).-
公开(公告)号：US20240109054A1
公开(公告)日：2024-04-04
申请号：US17768764
申请日：2020-10-15
发明人： Tomoe YAMAMOTO
CPC分类号： B01J20/3475 , B01J20/267 , B01J20/3483
摘要： Disclosed is a method for reproducing water-absorbing resin particles including: treating water-absorbing resin particles that have absorbed water with hot water; and treating the water-absorbing resin particles after the hot water treatment with a hydrophilic organic solvent.
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公开(公告)号：US20230347318A1
公开(公告)日：2023-11-02
申请号：US18006065
申请日：2021-07-15
发明人： Tomoe YAMAMOTO
CPC分类号： B01J20/267 , B01J20/28004 , B01J20/28016 , A61L15/24
摘要： Provided is a water-absorbing resin composition that is capable of achieving both high liquid diffusion and liquid leakage prevention in an absorbent. The present invention provides a water-absorbing resin composition, wherein: an electromotive force P(mV) of a first-washing washing liquid, obtained as a result of washing the water-absorbing resin composition by means of the washing method indicated below, is equal to or greater than 80 V; and the difference (P−Q) between the electromotive force P(mV) and an electromotive force Q(mV) of a second-washing washing liquid, obtained as a result of washing the water-absorbing resin composition by means of the washing method indicated below, is equal to or greater than 10 mV. (Washing method) A container in which a sieve having a mesh size of 36 μm is attached to the bottom of a cylinder having an inner diameter of 60 mm is prepared. 1 g of the water-absorbing resin composition is evenly dispersed on the sieve in the container. A 200 mL beaker is placed under the sieve. 200 g of a physiological saline solution is rapidly introduced from above the water-absorbing resin composition and the physiological saline solution that has flowed down into the beaker is used as the first-washing washing liquid. Next, a new 200 mL beaker is placed under the sieve. An additional 200 g of the physiological saline solution is rapidly introduced from above the water-absorbing resin composition and the physiological saline solution that has flowed down into the beaker is used as the second-washing washing liquid.
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公开(公告)号：US20230323112A1
公开(公告)日：2023-10-12
申请号：US18016186
申请日：2021-07-13
发明人： Ikumi KAKUTAKA , Naoki HASHIMOTO
CPC分类号： C08L67/02 , C08K5/37 , C08L2201/54
摘要： Provided is an aqueous polyester resin dispersion composition that maintains high rot-proofness and adhesiveness over a long period of time. More specifically, provided is an aqueous polyester resin dispersion composition containing pyrithione or a salt thereof.
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公开(公告)号：US20230312838A1
公开(公告)日：2023-10-05
申请号：US18016132
申请日：2021-07-13
发明人： Ikumi KAKUTAKA , Naoki HASHIMOTO
CPC分类号： C08J3/07 , C08L67/02 , C08J2367/02 , C08J2429/04 , C08L2201/54
摘要： Provided is a method for efficiently producing an aqueous polyester resin dispersion composition in an excellent emulsification state with excellent adhesiveness. More specifically, provided is a method for producing an aqueous polyester resin dispersion composition, including mixing a melt-kneaded material of polyester and polyvinyl alcohol further with an aqueous solution of 3 to 10 mass% polyvinyl alcohol such that the total content of the polyester and the polyvinyl alcohol in the obtained mixture is 78 to 88 mass%.
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公开(公告)号：US20230257561A1
公开(公告)日：2023-08-17
申请号：US18005489
申请日：2021-07-13
IPC分类号： C08L23/08 , C09D123/08 , D21H19/12
CPC分类号： C08L23/0869 , C09D123/0869 , D21H19/12 , C08L2201/54
摘要： An aqueous dispersion composition includes in a stably dispersed state a copolymer comprising an α,β-unsaturated carboxylic acid or an ester thereof as a constituent unit. The composition has a relatively high content of the copolymer and a relatively low viscosity. A production method for the aqueous dispersion composition is also provided. The method is for producing an aqueous dispersion composition of a copolymer comprising an α,β-unsaturated carboxylic acid or an ester thereof as a constituent unit. The method includes the steps of (1) mixing a copolymer comprising an α,β-unsaturated carboxylic acid or an ester thereof as a constituent unit, a basic substance, and water such that the concentration of the copolymer is 40 to 62 mass%, and that the copolymer is neutralized to a degree of neutralization of 10 to 35%, (2) applying a pressure of 0.1 to 2 MPa to the obtained mixture, and (3) further adding water after the pressure application to adjust the concentration of the copolymer to 30 to 60 mass%.
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