Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1974-12-05
1976-06-29
Anderson, Philip
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
156 85, 156229, 156244, 210DIG21, 260 25E, 264 51, 264210R, 264230, 264237, 264282, 264DIG8, 264DIG47, 428253, 428315, B01D 1502, B29D 2700, B32B 3114
Patent
active
039665976
ABSTRACT:
An oil or organic solvent-absorbent is prepared by extruding a molten thermoplastic resinous polymer blend of polystyrene and polyethylene containing a foaming agent through a die having a slit aperture of 0.1 - 1.0 mm width, quenching the extrudate at the die exit to a temperature below the glass transition point of the resinous blend, drafting the extrudate at a draft ratio from the maximum draft ratio possible under the operating conditions to one-third the maximum draft ratio, laminating at least two sheets of the resulting unopened, sheet-like reticulated structure having numerous non-continuous cracks along one direction so that the direction of the cracks of each such sheet is the same, pulling the laminate in a direction perpendicular to the direction of the cracks to separate the constituent fibers from each other, and crimping the opened, sheet-like laminate either alone or together with at least one other sheet-like material; a process for removing oil or organic solvents with the absorbent product.
REFERENCES:
patent: 3003304 (1961-10-01), Rasmussen
patent: 3539666 (1970-11-01), Schirmer
patent: 3549470 (1970-12-01), Greenwald et al.
patent: 3562369 (1971-02-01), Chopra et al.
patent: 3611699 (1971-10-01), Wininger et al.
patent: 3744638 (1973-07-01), Rhodes
patent: 3800950 (1974-04-01), Hess et al.
patent: 3819514 (1974-06-01), Clampitt et al.
patent: 3862963 (1975-01-01), Hoshi et al.
Imoto Tadasi
Katoh Takayuki
Okamura Isao
Omori Akira
Anderson Philip
Teijin Limited
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