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

1991-07-22

1993-01-12

Morris, Theodore

Mineral oils: processes and products

Products and compositions

208309, C10L 100

Patent

active

051787474

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 substantially 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
patent: 5034119 (1991-07-01), Blackburn et al.

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