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US 4,256,596 AGranted
Oxidatively coupled hydroxyaromatic compounds and fuels and lubricants containing them
AssigneeThe Lubrizol Corporation
InventorJerome M. Cohen
Life of this patent
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Abstract
Mixtures of (A) hydroxyaromatic compounds (e.g., phenols) having no aliphatic substituents of more than 4 carbon atoms and (B) hydroxyaromatic compounds having at least one aliphatic substituent with at least about 12 carbon atoms may be oxidatively coupled to yield products useful as lubricant and fuel additives.
Claims30
A method for preparing an oxidatively coupled product which comprises reacting an oxidative coupling agent with a reaction mixture comprising:
- (A) At least one hydroxyaromatic compound containing no aliphatic substituent having more than 4 carbon atoms;
- and
- (B) at least one hydroxyaromatic compound containing at least one aliphatic substituent having at least about 12 carbon atoms;
- at least one position ortho to a hydroxy group in each of reagents A and B being unsubstituted.
1 more element
A composition comprising the solid and liquid components of an oxidative coupling agent in combination with:
- (A) At least one hydroxyaromatic compound containing no aliphatic substituent having more than 4 carbon atoms;
- and
- (B) at least one hydroxyaromatic compound containing at least one aliphatic substituent having at least about 12 carbon atoms;
- at least one position ortho to a hydroxy group in each of reagents A and B being unsubstituted.
1 more element
Dependencies are inferred from the claim text.