摘要:
The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent. Further, the present invention also relates to an absorbing material, which comprises a water-absorbing resin compound of the present invention, and a hydrophilic fiber as well as an absorbing product, which comprises a liquid-permeable sheet and a liquid-non-permeable sheet, and an absorbing material comprising a water-absorbing resin compound of the present invention, and a hydrophilic fiber between the liquid-permeable sheet and the liquid-non-permeable sheet.
摘要:
The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent. Further, the present invention also relates to an absorbing material, which comprises a water-absorbing resin compound of the present invention, and a hydrophilic fiber as well as an absorbing product, which comprises a liquid-permeable sheet and a liquid-non-permeable sheet, and an absorbing material comprising a water-absorbing resin compound of the present invention, and a hydrophilic fiber between the liquid-permeable sheet and the liquid-non-permeable sheet.
摘要:
The present invention relates to a method of producing water-absorbent resin particles in which a median particle size of primary particles (d) and a median particle size of secondary particles (D) satisfy the relationship of the formula, 5d/3+150
摘要:
The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent. Further, the present invention also relates to an absorbing material, which comprises a water-absorbing resin compound of the present invention, and a hydrophilic fiber as well as an absorbing product, which comprises a liquid-permeable sheet and a liquid-non-permeable sheet, and an absorbing material comprising a water-absorbing resin compound of the present invention, and a hydrophilic fiber between the liquid-permeable sheet and the liquid-non-permeable sheet.
摘要:
A process for producing a water-absorbent resin particle comprising subjecting a water-soluble ethylenically unsaturated monomer to a reverse phase suspension polymerization, characterized in that the process for producing a water-absorbent resin particle comprises the steps of (A) subjecting the water-soluble ethylenically unsaturated monomer to a first-step reverse phase suspension polymerization in a hydrocarbon-based solvent using a water-soluble radical polymerization initiator in the presence of a surfactant and/or a polymeric protective colloid, and optionally an internal crosslinking agent; (B) carrying out at least one step of the procedures of adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a water-soluble radical polymerization initiator and optionally an internal crosslinking agent to a reaction mixture after the termination of the first-step reverse phase suspension polymerization in a state that the surfactant and/or the polymeric protective colloid is dissolved in the hydrocarbon-based solvent, and subsequently subjecting the mixture to a reverse phase suspension polymerization; and (C) post-crosslinking the resulting water-absorbent resin.
摘要:
Water-absorbent resin particles, characterized in that the water-absorbent resin particles have a water-retention capacity of physiological saline (X) of from 30 to 70 g/g, that the water-retention capacity of physiological saline (X) and a water absorption index under pressure (Y) satisfy the relationship of the formula: [Water absorption index under pressure (Y)]≧150 −2[Water-retention capacity of physiological saline (X)], and that the water-absorbent resin particles have a liquid-suction rate from pulp of 20 g/g/5 minutes or more; and an absorbent material and an absorbent article, each in which the water-absorbent resin particles are used. The absorbent material in which the water-absorbent resin particles are used can be suitably used, for example, in absorbent articles such as disposable diapers and sanitary napkins.
摘要:
A process for preparing a water-absorbent resin comprising carrying out a reversed phase suspension polymerization in multi-steps of at least two steps when the water-absorbent resin is prepared by subjecting a water-soluble ethylenically unsaturated monomer to the reversed phase suspension polymerization, said process for preparing a water-absorbent resin being characterized by adding a phosphorus-containing compound to at least one step in the second and subsequent steps, to carry out the polymerization reaction. The water-absorbent resin can be suitably used in hygienic materials such as disposable diaper, incontinence pad and sanitary napkin, especially in disposable diaper.
摘要:
A process for preparing a water-absorbent resin comprising carrying out a reverse phase suspension polymerization in multi-steps of at least two steps when the water-absorbent resin is prepared by subjecting a water-soluble ethylenically unsaturated monomer to the reverse phase suspension polymerization in the presence of a crosslinking agent, the process for preparing a water-absorbent resin being characterized by adding a water-soluble chain transfer agent in an amount of 0.000012 to 0.01 mole per 1 mole of the water-soluble ethylenically unsaturated monomer used in a polymerization reaction to at least one step in the second and subsequent steps of the multi-steps, to carry out the polymerization reaction. The water-absorbent resin can be suitably used in hygienic materials such as disposable diaper and sanitary napkin.
摘要:
A water-absorbent resin composition comprising an oxygen-containing reducing inorganic salt and a water-absorbent resin, wherein the iron content in the resin composition is at most 1 ppm; an absorbent having the above-mentioned water-absorbent resin composition and a hydrophilic fiber; and an absorbent article comprising the above-mentioned absorbent interposed between a liquid-permeable sheet and a liquid-impermeable sheet.
摘要:
A process for preparing a water-absorbent resin made from an α,β-unsaturated carboxylic acid as an essential monomer characterized in that the process comprises allowing a metal chelating agent to be present at any step in the process in an amount of 0.001 to 6 parts by weight, based on 100 parts by weight of the α,β-unsaturated carboxylic acid; and adding a reducing agent or an oxidizing agent thereto in an amount of 0.001 to 6 parts by weight, based on 100 parts by weight of the α,β-unsaturated carboxylic acid before initiation of drying and/or during drying of a gelated product containing a water-absorbent resin obtained by polymerization.