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    • 4. 发明申请
    • METHOD FOR PRODUCING A WATER-ABSORBENT RESIN
    • 生产吸水树脂的方法
    • US20140179886A1
    • 2014-06-26
    • US14125818
    • 2011-07-20
    • Hideki YokoyamaAtsushi HeguriNobuhiro Maeda
    • Hideki YokoyamaAtsushi HeguriNobuhiro Maeda
    • C08F120/06
    • C08F120/06B01J20/267C08F2/18C08F2/32C08F220/06C08F220/10C08F220/56
    • A method is disclosed for producing a water-absorbent resin by a reversed-phase suspension polymerization method, wherein an odor originating from a raw material component, in particular, a petroleum hydrocarbon dispersion medium, is further reduced as compared with a water-absorbent resin obtained by a conventional method, and a water-absorbent resin obtained by the method. More specifically, a method is disclosed for producing a water-absorbent resin by performing a reversed-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium, comprising adding and dispersing an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a hydrophilic polymeric dispersion agent to a petroleum hydrocarbon dispersion medium in the presence of a surfactant under stirring, and performing a reversed-phase suspension polymerization using a radical polymerization initiator, and a water-absorbent resin obtained by the method.
    • 公开了通过反相悬浮聚合法制造吸水性树脂的方法,其中与原料成分,特别是石油烃分散介质相比产生的气味与吸水性树脂相比进一步降低 通过常规方法获得的吸水性树脂和通过该方法获得的吸水性树脂。 更具体地,公开了通过在石油烃分散介质中进行水溶性烯键式不饱和单体的反相悬浮聚合来制造吸水性树脂的方法,包括将水溶性烯键式的水溶液 在表面活性剂存在下,在搅拌的同时,将含有亲水性高分子分散剂的亲水性高分子分散剂与不饱和单体反应,使用自由基聚合引发剂进行反相悬浮聚合,得到的吸水性树脂。
    • 7. 发明授权
    • Method for producing a water-absorbent resin
    • 吸水性树脂的制造方法
    • US09132413B2
    • 2015-09-15
    • US13812650
    • 2011-07-20
    • Sachi KikunoAtsushi HeguriHideki YokoyamaNobuhiro Maeda
    • Sachi KikunoAtsushi HeguriHideki YokoyamaNobuhiro Maeda
    • C08F2/18B01J20/30C08F2/32C08F220/06C08F220/56
    • B01J20/30C08F2/18C08F2/32C08F220/06C08F220/56
    • A method for producing a water-absorbent resin comprising at least two stages of reversed-phase suspension polymerization, wherein the first stage of the at least two stages of reversed-phase suspension polymerization comprises the following steps of: (A) performing a primary dispersion by stirring to mix in the absence of surfactants an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a hydrophilic polymeric dispersion agent with a petroleum hydrocarbon dispersion medium in which a hydrophobic polymeric dispersion agent dissolves or disperses; (B) further performing a secondary dispersion by adding a surfactant to the resultant dispersion liquid; and (C) performing a polymerization by using a water-soluble radical polymerization initiator to obtain a water-absorbent resin as particles in a hydrous gel state which disperse in the petroleum hydrocarbon dispersion medium, and a water-absorbent resin obtained by the method.
    • 一种制备吸水性树脂的方法,其包含至少两个阶段的反相悬浮聚合,其中所述至少两个阶段的反相悬浮聚合的第一阶段包括以下步骤:(A)进行一次分散 通过搅拌在不存在表面活性剂的情况下将含有亲水性聚合物分散剂的水溶性烯属不饱和单体的水溶液与疏水性聚合物分散剂溶解或分散的石油烃分散介质混合; (B)通过向所得分散液中加入表面活性剂进一步进行二次分散; 和(C)通过使用水溶性自由基聚合引发剂进行聚合,得到作为分散在石油烃分散介质中的含水凝胶状态的颗粒的吸水性树脂和通过该方法获得的吸水性树脂。
    • 8. 发明授权
    • Process for production of water-absorbent resin
    • 吸水树脂生产工艺
    • US09074022B2
    • 2015-07-07
    • US12298195
    • 2007-04-26
    • Hideki YokoyamaYasuhiro Nawata
    • Hideki YokoyamaYasuhiro Nawata
    • C08F2/18C08F2/32C08F220/06
    • C08F2/18C08F2/32C08F220/06
    • A purpose of the present invention is to reduce odor of a water-absorbent resin during absorption of water. Such the invention is attained by a process for production of a water-absorbent resin by subjecting a water-soluble ethylenically unsaturated monomer to reversed-phase suspension polymerization. The process comprises the following steps (A) to (C): (A) adding an aqueous solution of water-soluble ethylenically unsaturated monomer to a petroleum hydrocarbon dispersion medium to disperse the aqueous solution in the dispersion medium; (B) adding a surfactant to the emulsion to further disperse the emulsion; and (C) performing the reversed-phase suspension polymerization using a water-soluble radical polymerization initiator, optionally in the presence of an internal-crosslinking agent.
    • 本发明的目的是减少吸水性树脂在吸水期间的气味。 通过使水溶性烯属不饱和单体进行反相悬浮聚合,通过吸水性树脂的制造方法实现本发明。 该方法包括以下步骤(A)至(C):(A)将水溶性烯属不饱和单体的水溶液加入到石油烃分散介质中以将水溶液分散在分散介质中; (B)向乳液中加入表面活性剂以进一步分散乳液; 和(C)任选地在内部交联剂的存在下,使用水溶性自由基聚合引发剂进行反相悬浮聚合。
    • 9. 发明申请
    • METHOD FOR PRODUCING A WATER-ABSORBENT RESIN
    • 生产吸水树脂的方法
    • US20130123445A1
    • 2013-05-16
    • US13812753
    • 2011-07-20
    • Atsushi HeguriSachi KikunoHideki YokoyamaNobuhiro Maeda
    • Atsushi HeguriSachi KikunoHideki YokoyamaNobuhiro Maeda
    • C08F2/10
    • C08F2/10C08F2/32C08F220/06C08F220/56
    • A method for producing a water-absorbent resin by performing a reversed-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium, comprising the following steps of: (A) performing a primary dispersion in the absence of surfactants by adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a hydrophilic polymeric dispersion agent to a petroleum hydrocarbon dispersion medium in which a hydrophobic polymeric dispersion agent was heat-dispersed or heat-dissolved, under stirring; (B) further performing a secondary dispersion by adding a surfactant to a dispersion liquid obtained after the primary dispersion; and (C) performing the reversed-phase suspension polymerization by using a radical polymerization initiator; and the water-absorbent resin obtained by the method.
    • 一种通过在石油烃分散介质中进行水溶性烯键式不饱和单体的反相悬浮聚合制备吸水性树脂的方法,包括以下步骤:(A)在不存在表面活性剂的情况下进行一次分散 通过在搅拌下将含有亲水性高分子分散剂的水溶性烯属不饱和单体的水溶液加入其中疏水聚合物分散剂被热分散或热溶解的石油烃分散介质中; (B)通过向在一次分散后得到的分散液中添加表面活性剂进一步进行二次分散; 和(C)使用自由基聚合引发剂进行反相悬浮聚合; 和通过该方法获得的吸水性树脂。
    • 10. 发明申请
    • WATER-ABSORBENT RESIN SUITABLE FOR USE IN HYGIENIC MATERIALS
    • 吸水树脂适用于卫生材料
    • US20100331802A1
    • 2010-12-30
    • US12673924
    • 2008-08-14
    • Hideki YokoyamaYasuhiro Nawata
    • Hideki YokoyamaYasuhiro Nawata
    • A61L15/24C08F20/06
    • B01J20/267A61L15/60B01J20/261C08F2/14C08F2/32C08F20/06
    • The present invention provides a water-absorbent resin produced by a reversed-phase suspension polymerization method, which contains a small amount of a petroleum hydrocarbon dispersion medium remaining therein used in reversed-phase suspension polymerization, and thus reducing an odor originating from the petroleum hydrocarbon dispersion medium, when the water-absorbent resin absorbs water, and also which is suitable for use in hygienic materials; an absorbent material and an absorbent article. More particularly, the present invention provides a water-absorbent resin obtained by subjecting an aqueous solution of a water-soluble ethylenically unsaturated monomer to reversed-phase suspension polymerization in a petroleum hydrocarbon dispersion medium in the presence of a surfactant, wherein the amount of the petroleum hydrocarbon dispersion medium remaining in the water-absorbent resin is 2,000 ppm or less; and an absorbent material and an absorbent article using the same.
    • 本发明提供一种通过反相悬浮聚合法制备的吸水性树脂,其中含有少量其中残留在反相悬浮聚合中的石油烃分散体,从而减少源自石油烃的气味 分散介质,当吸水性树脂吸水时,也适用于卫生材料; 吸收材料和吸收制品。 更具体地说,本发明提供一种吸水性树脂,其通过在表面活性剂的存在下,在石油烃分散介质中使水溶性烯属不饱和单体的水溶液进行反相悬浮聚合,其中, 残留在吸水性树脂中的石油烃分散介质为2000ppm以下, 以及使用其的吸收性材料和吸收性物品。