摘要:
The present invention has an object to provide a novel water-swellable crosslinked polymer composition which exhibits excellent saltwater absorption speed and capacity under a load. This object can be achieved in the case where, in a water-swellable crosslinked polymer composition comprising a blend of water-swellable crosslinked polymer particles of basicity in water and water-swellable crosslinked polymer particles of acidity in water, the water-swellable crosslinked polymer particles of basicity in water are unified with the water-swellable crosslinked polymer particles of acidity in water through ionic bondings in a state where water is present between the particles, wherein the ionic bondings are formed in a state where water is present between the particles by neutralization of at least part of acid groups of the water-swellable crosslinked polymer particles of acidity in water with the water-swellable crosslinked polymer particles of basicity in water.
摘要:
There are disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition causes little gel-blocking and is excellent in the liquid permeability and liquid diffusibility and is high also in the absorption performances and further is strong also against the physical damage; and there are further disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition has the following further advantages, in addition to the above, of involving little segregation of the metal compound and further having a dust prevention effect. One of water-absorbent resin compositions according to the present invention is a water-absorbent resin composition comprising water-absorbent resin particles obtained by polymerizing a monomer including acrylic acid and/or its salt, with the composition having a mass-average particle diameter of 100 to 600 μm and comprising water-soluble polyvalent metal salt particles and the water-absorbent resin particles that have been surface-crosslinked.
摘要:
This invention concerns an absorbent composite a supporting member and a cationic absorbent polymer and anionic absorbent polymer particles fixed to the supporting member. This absorbent composite excels in absorbing capacity under pressure, vertical aspiration power, and flexibility and suffers only sparing exfoliation of an absorbent polymer. This invention further concerns an absorbent composite which contains an absorbent polymer in an amount of at least 30% by weight based on the total weight of the absorbent composite and, after absorbing a liquid, shows a value of not less than 3 for the expansion anisotropy specified by the following formula. Expansion anisotropy=(Ez/Ex+Ez/Ey)/2 (wherein Ex, Ey, and Ez respectively represent coefficient of liner expansion in the directions of X axis, Y axis, and Z axis) and an absorbent article using the absorbent composite. This invention permits production of a novel absorbent composite which suffers no leakage and excels in water absorbing power, water retaining power, and flexibility and an absorbent article using the absorbent composite.
摘要翻译:本发明涉及一种吸收性复合材料,其是支撑构件和阳离子吸收聚合物以及固定在支撑构件上的阴离子吸收性聚合物颗粒。 这种吸收性复合材料在压力,垂直抽吸力和柔韧性下的吸收能力优异,并且仅仅吸收聚合物的剥落。 本发明还涉及一种吸收性复合材料,其含有吸收性聚合物,该吸收性聚合物的量相对于吸收性复合材料的总重量为至少30重量%,并且在吸收液体之后,对于膨胀各向异性显示不小于3的值 由以下公式指定。 膨胀各向异性=(Ez / Ex + Ez / Ey)/ 2(其中,Ex,Ey和Ez分别表示在X轴,Y轴和Z轴方向上的衬垫膨胀系数)和使用吸收性复合材料 。 本发明允许生产不会发生泄漏并且吸水力,保水力和柔软性优异的吸收性复合材料,以及使用吸收性复合体的吸收性物品。
摘要:
There are disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition causes little gel-blocking and is excellent in the liquid permeability and liquid diffusibility and is high also in the absorption performances and further is strong also against the physical damage; and there are further disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition has the following further advantages, in addition to the above, of involving little segregation of the metal compound and further having a dust prevention effect. One of water-absorbent resin compositions according to the present invention is a water-absorbent resin composition comprising water-absorbent resin particles obtained by polymerizing a monomer including acrylic acid and/or its salt, with the composition having a mass-average particle diameter of 100 to 600 μm and comprising water-soluble polyvalent metal salt particles and the water-absorbent resin particles that have been surface-crosslinked.
摘要:
The present invention provides a surface-crosslinking process of a water-absorbent resin to obtain a water-absorbing agent which has high absorption speed and excellent absorption capacity under a load (a water-absorbent resin which has specific or larger values of properties). In a process comprising the step of adding a crosslinking agent to a dry water-absorbent resin powder to thereby crosslink the neighborhood of its surface, the surface-crosslinking is carried out while the resin powder having a weight-average particle diameter of 200 to 1,000 &mgr;m is pulverized.
摘要:
To provide (i) a water-absorbing agent, having a water-absorbent resin as a main component, whose absorbency is high and liquid permeability is enhanced and (ii) a production method thereof. The water-absorbing agent of the present invention includes a water-absorbent resin obtained by polymerizing an unsaturated monomer having a carboxyl group and included in an aqueous monomer solution in the presence of at least a non high molecular compound having four or more functional groups each capable of forming a covalent bond with a carboxyl group.
摘要:
To provide (i) a water-absorbing agent, having a water-absorbent resin as a main component, whose absorbency is high and liquid permeability is enhanced and (ii) a production method thereof. The water-absorbing agent of the present invention includes a water-absorbent resin obtained by polymerizing an unsaturated monomer having a carboxyl group and included in an aqueous monomer solution in the presence of at least a non high molecular compound having four or more functional groups each capable of forming a covalent bond with a carboxyl group.
摘要:
The present invention provides an aqueous-liquid-absorbing agent which comprises water-absorbent resin particles as essential components and is suitable for uses in sanitary materials. The aqueous-liquid-absorbing agent according to the present invention is an aqueous-liquid-absorbing agent comprising water-absorbent resin particles as essential components, wherein the water-absorbent resin particles are obtained by a process including the step of polymerizing a water-soluble ethylenically unsaturated monomer having a carboxyl group, and have a crosslinked structure in their inside, the aqueous-liquid-absorbing agent exhibiting a water absorption capacity (CRC) of 5 to 25 g/g and a saline flow conductivity (SFC) of not less than 1216 cm3·s·10−7/g.
摘要:
An object of the present invention is to provide an aqueous-liquid-absorbing agent which comprises water-absorbent resin particles as essential components and is suitable for uses in sanitary materials. As a means of achieving this object, an aqueous-liquid-absorbing agent according to the present invention is an aqueous-liquid-absorbing agent comprising water-absorbent resin particles as essential components, wherein the water-absorbent resin particles are obtained by a process including the step of polymerizing a water-soluble ethylenically unsaturated monomer and have a crosslinked structure in their inside; with the aqueous-liquid-absorbing agent exhibiting an absorption rate (FSR) of not less than 0.2 g/g/s, a water absorption capacity (CRC) of 5 to 25 g/g, a saline flow conductivity (SFC) of not less than 400×10−7 cm3·s/g, and a wet porosity of not less than 20%. A process according to the present invention for obtaining such an aqueous-liquid-absorbing agent is characterized by comprising the steps of: obtaining a hydrogel from an aqueous monomer solution including a water-soluble ethylenically unsaturated monomer and an internal-crosslinking agent of not less than 0.2 mol % in ratio to the monomer; and then extruding this hydrogel from a perforated structure having perforation diameters in the range of 0.3 to 6.4 mm to thereby pulverize the hydrogel.
摘要翻译:本发明的目的是提供一种含水吸收剂,其包含作为必需成分的吸水性树脂粒子,适用于卫生材料。 作为实现该目的的手段,本发明的水性液体吸收剂是以吸水性树脂粒子为必须成分的水性液体吸收剂,其中吸水性树脂粒子是通过 包括聚合水溶性烯键式不饱和单体并在其内部具有交联结构的步骤; 吸水率(FSR)为0.2g / g / s以上,吸水容量(CRC)为5〜25g / g,盐水流动电导率(SFC)不为 小于400×10 -3 cm 3 / g,湿气孔率不小于20%。 根据本发明的用于获得这种水性液体吸收剂的方法的特征在于包括以下步骤:从包含水溶性烯键式不饱和单体和不少于少量的内部交联剂的单体水溶液获得水凝胶 与单体的比例为0.2摩尔%以上; 然后从穿孔直径在0.3至6.4mm范围内的穿孔结构体挤出该水凝胶,从而粉碎水凝胶。
摘要:
The present invention provides a water-absorbing agent that includes water-absorbent resin particles as essential components and is suitable for a sanitary material. A water-absorbing agent of the present invention includes water-absorbent resin particles obtained by polymerizing an unsaturated monomer having an acid group. The water-absorbing agent has centrifuge retention capacity (CRC) of 5 to 20 g/g and includes: a compound with a structure unit derived from polyalkyleneglycol other than the unsaturated monomer; and a multivalent metal salt, and accordingly the water-absorbing agent has high saline flow conductivity (SFC) in a range of the above centrifuge retention capacity (CRC).