Substrate carrying a porous polymeric material

Details Substrate carrying a porous polymeric material Substrate carrying a porous polymeric material

1982-06-22

1989-01-10

Swisher, Nancy A. B.

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

428 76, 4283166, C08J 928

Patent

active

047973102

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.

REFERENCES:
patent: 3284273 (1966-11-01), Prentice
patent: 3334374 (1967-08-01), Watkins, Jr.
patent: 3720534 (1973-03-01), Macaulay
patent: 3732652 (1973-05-01), Furgal et al.
patent: 4226886 (1980-10-01), Lahes
patent: 4254179 (1981-03-01), Carson, III et al.
patent: 4340057 (1982-07-01), Bloch et al.
patent: 4473611 (1984-09-01), Haq

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