ALKYL-substituted hydroxyaromatic compounds with highly structured ALKYL branches
AssigneesChevron Oronite Company LLC, Chevron U.S.A. Inc.
InventorsAndrew R. Gibbs, Sven Ivar Hommeltoft
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a hydroxyaromatic product. The alkyl hydroxyaromatic compound having a structure given by where R is a hydroxyaromatic group, X is hydrogen or methyl group and where n is 1 or greater.
Claims23
A hydroxyaromatic product comprising:
- a highly-structured alkyl hydroxyaromatic compound having a structure given by
- wherein R is a hydroxyaromatic group, X is hydrogen or methyl group and wherein n is 1 or greater;
- and wherein at least 50 mol % of the alkyl group of the alkyl hydroxyaromatic compound have an alkyl group having a ratio of methyl carbon to methylene carbon of greater than about 0.85.
A highly-structured alkyl-substituted hydroxyaromatic compound wherein at least 50 mol % of the alkyl group of the alkyl-substituted hydroxyaromatic compound have an alkyl group having a ratio of methyl carbon to methylene carbon of greater than about 0.85 is formed by a process comprising:
- alkylating a hydroxyaromatic compound with an alkylating agent containing vinylidene-rich propylene oligomers comprising propylene oligomers that terminate with vinylidene double bond, wherein the propylene oligomers are prepared by oligomerizing a propylene-rich feedstock containing olefins wherein at least 50 mol % of the olefins in the feedstock are propylene and wherein at least 50 mol % of the propylene oligomers have the vinylidene double bond.
A method of alkylating a hydroxyaromatic compound to form highly-structured alkyl-substituted hydroxyaromatic compound wherein at least 50 mol % of the alkyl group of the alkyl hydroxyaromatic compound have an alkyl group having a ratio of methyl carbon to methylene carbon of greater than about 0.85, the method comprising:
- oligomerizing propylene monomers in presence of single-site catalyst to form vinylidene-rich propylene oligomers comprising propylene oligomers that terminate with vinylidene double bond, wherein the propylene oligomers are prepared by oligomerizing a propylene-rich feedstock containing olefins wherein at least 50 mol % of the olefins in the feedstock are propylene and wherein at least 50 mol % of the propylene oligomers have the vinylidene double bond;
- and
- alkylating the hydroxyaromatic compound with the vinylidene-rich propylene oligomers.
Dependencies are inferred from the claim text.