Compositions – Inorganic luminescent compositions – Tungsten containing
Patent
1994-04-29
1996-02-27
Lovering, Richard D.
Compositions
Inorganic luminescent compositions
Tungsten containing
252314, 252357, 166304, 507 90, B01J 1300, E21B 3706
Patent
active
054946077
ABSTRACT:
Asphaltenes may be dispersed in caustic treated petroleum crude oil, or in any fraction thereof by adding an effective dispersing amount of a mono or di substituted alkylphenol-formaldehyde resin and or a monosubstituted alkylphenol-polyethylenepolyamine-formaldehyde resin, such resins having a weight average molecular weight of from about 1,000 to about 20,000, and an alkyl substituent containing from about 4 to about 24 carbon atoms, which alkyl substituent may be linear or branched.
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Manek Maria B.
Sawhney Kailash N.
Drake James J.
Lovering Richard D.
Miller Robert A.
Nalco Chemical Company
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