Chemically treated filters

Details Chemically treated filters Chemically treated filters

1997-06-09

1999-07-20

Fortuna, Ana

Liquid purification or separation

Filter

Material

210490, 21050038, 21050027, B01D 3900

Patent

active

059252510

ABSTRACT:
A filter for removing particulate from petroleum distillate fuels exhibiting improved resistance to plugging due to sludge formation during use is disclosed. The filter is a conventional fibrous, paper, sintered metal or sintered ceramic filter capable of removing at least 50 weight percent of the particulates from a petroleum distillate fuel. The filter medium has deposited thereon a substantially continuous coating which is comprised from 0 to 50 weight percent of a film forming amine and from 50 to 100 weight percent of a biodispersant. The film forming amine film is, preferably, N-(cocoalkyl)-1,3-propane diamine. The preferred biodispersants are the imidazolines of which 1-(2-hydroxyethyl)-2- octyldecyl-2-imidazoline is most preferred.

REFERENCES:
patent: 4203847 (1980-05-01), Grandine, 2nd
patent: 4250029 (1981-02-01), Kiser et al.
patent: 4770790 (1988-09-01), Oberhofer
patent: 5279738 (1994-01-01), Seita et al.

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