IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0723388
(1996-09-30)
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발명자
/ 주소 |
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| 출원인 / 주소 |
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
12 인용 특허 :
0 |
초록
▼
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 polystyr
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.
대표청구항
▼
[ What is claimed is:] [19.] A foamed film capable of absorbing organic contaminants and provided as an extrusion coat on a plastic fiber mat, comprising:a foamed film formed from a composition comprising: 10-45% by weight of one or more of polystyrene, polyethylene, polypropylene, and their copolym
[ What is claimed is:] [19.] A foamed film capable of absorbing organic contaminants and provided as an extrusion coat on a plastic fiber mat, comprising:a foamed film formed from a composition comprising: 10-45% by weight of one or more of polystyrene, polyethylene, polypropylene, and their copolymers; about 0.1-1% by weight blowing agent; and at least about 50% by weight elastomeric material; andwherein the plastic fiber mat is a polypropylene fiber mat, and wherein said film has a thickness of between about 5-200 mils.
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