Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – Chemical modification of asphalt – tar – pitch or resin
Patent
1994-06-06
2000-01-04
Griffin, Walter D.
Mineral oils: processes and products
Asphalts, tars, pitches and resins; making, treating and...
Chemical modification of asphalt, tar, pitch or resin
208135, 585446, 585459, 585467, 585468, C10G 120, C10G 3504, C07C 266
Patent
active
060106174
ABSTRACT:
A process for reducing the mutagenicity of a coal-tar-based product containing polynuclear aromatic compounds. The process includes the step of contacting the coal-tar-based product in the presence of an alkylating agent with an acid catalyst under alkylation conditions sufficient to reduce the mutagenicity of the polynuclear aromatic containing coal-tar-based material to a level less than the initial mutagenicity index value. Also provided are non-carcinogenic coal-tar-derived products.
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Blackburn Gary R.
Mackerer Carl R.
Roy Timothy A.
Griffin Walter D.
Keen Malcolm D.
Mobil Oil Corporation
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