Absorbent composite and method for producing same, asorbent article and nozzle
AssigneeMitsubishi Chemical Corporation
InventorsShunichi Himori, Kiichi Itoh, Yasunari Sugyo, Taisuke Ishii
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Abstract
An absorbent composite comprising a bound particulate absorbent polymer in which two or more nearly spherical absorbent polymer particles are bound to each other and a web-like absorbent polymer, wherein the bound particulate absorbent polymer and the web-like absorbent polymer are bound to a substrate. The composite has a large absorption and a high absorbing speed in which the absorbent polymer is kept uniformly dispersed on the support throughout before and after absorption.
Claims31
An absorbent composite comprising a bound particulate absorbent polymer in which two or more nearly spherical absorbent polymer particles are bound to each other and a web-like absorbent polymer, wherein the bound particulate absorbent polymer and the web-like absorbent polymer are bound to a substrate.
A method for producing an absorbent composite, which comprises polymerizing a polymerizable monomer to give an absorbent polymer and a polymerization initiator in a vapor phase in a mode of droplet polymerization, and contacting it with a substrate while the conversion of the polymerizable monomer is at most 40%.
A polymerization nozzle for use in a method of producing an absorbent composite that comprises polymerizing a polymerizable monomer to give an absorbent polymer and a polymerization initiator in a vapor phase in a mode of droplet polymerization, and contacting it with a substrate while the conversion of the polymerizable monomer is at most 40%, in which the wall thickness of the tip to constitute the nozzle orifice is at most 10 mm.
A polymerization nozzle provided with a mechanism of forming a liquid film on the outer wall surface of the polymerization nozzle.
Dependencies are inferred from the claim text.