Patent ID: 6844407

Claim:
A compound characterized by the formula: wherein R 1 is selected from the group consisting of hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, and substituted heteroatom-containing hydrocarbyl, and combinations thereof, with the proviso that R 1 is not methyl; R 2 and R 3 are each independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, and substituted heteroatom-containing hydrocarbyl, and combinations thereof; R 4 is selected from the group consisting of hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, substituted heteroatom-containing hydrocarbyl, and combinations thereof; R 4 combines with R 2 and/or R 3 to form a ring structure, with said ring having from 3 to 50 non-hydrogen atoms.