Non-carcinogenic bright stock extracts and deasphalted oils

Details Non-carcinogenic bright stock extracts and deasphalted oils Non-carcinogenic bright stock extracts and deasphalted oils

1989-03-28

1991-07-23

Myers, Helane E.

Mineral oils: processes and products

Fractionation

Deasphalting

208 86, 208 87, 208 88, 208 94, 208 96, 208 97, 208177, 208314, 208347, 208354, 208DIG1, 435 30, 435 29, 435 34, C10G 4100

Patent

active

050341197

ABSTRACT:
Non-carcinogenic bright stock extracts and/or deasphalted oils are produced from reduced hydrocarbon feedstocks. Such non-carcinogenic products are produced by establishing a functional relationship between mutagenicity index and a physical property correlative of hydrocarbon type for the bright stock extract or deasphalted oil and determining a critical physical property level which, when achieved, results in a product having a mutagenicity index of less than about 1.0. Process conditions are established so that a product stream achieving the desired physical property level can be produced. Non-carcinogenic bright stock extracts and/or deasphalted oils are then processed utilizing the conditions so established. A bright stock extract and a deasphalted oil substantilly free from mutagenic activity, as well as processes for their production are also provided herein.

REFERENCES:
patent: 3929626 (1975-12-01), Button et al.
patent: 4321094 (1982-03-01), Batt et al.
patent: 4499187 (1985-02-01), Blackburn et al.
patent: 4869809 (1989-09-01), Sarna

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