Synthetic chemical adsorbents
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United States of America Patent
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Sep 6, 1988
Issued Date -
N/A
app pub date -
Aug 18, 1987
filing date -
May 22, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed for absorbing bases, acids, alcohols and radioactive liquids using phenol resin foamed plastic particles. The size of the particles should lie between about 0.3 and 3 mm. The particles are initially closed-celled, but have been powdered or fine flaked. They may be treated with an acid for absorbing a base, or with a base for absorbing an acid. A preferred use is in the form of packing material. The particles may be disposed in the form of powder or flakes in liquid-permeable padding. The padding may be composed of a plastic web, in particular a nylon web, or of a non-woven fabric. As packing material the phenol resin foamed plastic may be in the form of sheets, blocks, cubes, tablets, balls or fragments.
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