Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating produced by extrusion
Patent
1996-09-30
1998-11-24
Raimund, Christopher
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Coating produced by extrusion
442 76, 442121, 442171, 521134, C08L 6300
Patent
active
058406328
ABSTRACT:
A method and compositions for removing organic contaminants from contaminated liquid, gas, or soil in fluent form are easily practiced and handled, highly absorbent, and readily collected. A foamed sheet, film, strands, or filament mat is formed from a composition comprising 5-49% by weight polystyrene, polypropylene, or other polymer; about 0-1% by weight blowing agent such as sodium tetraborate; and substantially the balance of elastomeric material. Contaminated liquid, gas, or soil in fluid form, or mixtures thereof into contact with the sheet, film, strands, or mat, so that the sheet, film, strands, or mat absorb at least 90% (typically at least 100%) of their weight of organic contaminants from the contaminated material. A sheet or film may be formed by extruding through a sheet or film die a composition of 10-45% polystyrene, 0.1-1% blowing agent, and substantially the balance styrene/ butadiene/styrene triblock polymer; foamed strands may be formed by extruding through die holes a composition of 10-49% polystyrene, 0.1-1% blowing agent, and substantially the balance elastomeric material; and foamed filaments formed by extruding through die holes a composition of 5-45% polypropylene, 0-1% blowing agent, and substantially the balance elastomeric material are formed into a non-woven mat of continuous filaments with random orientation.
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Raimund Christopher
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