Importance

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Abstract

An article suitable for delivering or absorbing liquid includes a substrate carrying a pressure-sensitive porous polymeric material which is capable of retaining at least 10 times its own weight of water or corresponding amounts of other liquids. The porous polymeric material is advantageously a crosslinked homogeneous block material having a dry density of less than 0.1 g/cc and a pore volume of more than 9 cc/g, and may be produced by polymerization of a high internal phase emulsion. In the article of the invention, the polymer may either be dry or contain an included liquid; the dry form is highly absorbent and is useful for mopping up slippages, while the liquid-containing form is useful for delivering treatment liquids, for example, cleaning compositions, to surfaces. The article may take the form of a single- or multi-compartment sachet of paper or nonwoven fabric containing the porous polymeric material.

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First Claim