Sludge obtained when processing waste lubricating oil, and a met

Details Sludge obtained when processing waste lubricating oil, and a met Sludge obtained when processing waste lubricating oil, and a met

1988-03-18

1989-05-23

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 59, 524 62, 524 70, 524 71, 524515, 524518, C08L 9500, C08L 2316, C08L 2312, C08K 300

Patent

active

048331856

ABSTRACT:
This invention concerns a method whereby the sludge obtained when reclaiming waste lubricating oils by treating with acids or solvents can be processed by the addition of elastomers and hardeners to obtain a compound which--when used in conjunction with bituminous conglomerates and mixtures--gives these conglomerates or mixtures superior mechanical characteristics and high strength at high and low temperatures.

REFERENCES:
patent: 3873483 (1975-03-01), Gelsner et al.
patent: 3919148 (1975-11-01), Winters et al.
patent: 3960793 (1976-06-01), Bosniak
patent: 4105612 (1978-08-01), Cushman et al.
patent: 4129542 (1978-12-01), Matheson et al.
patent: 4177079 (1979-12-01), Essenscheid

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