Patent ID: 8557930

Claim:
A modified, hydrocarbylphenol-aldehyde resin prepared by reacting an epoxide with a resin of Formula (I) in the presence of a basic catalyst and at a basic pH, wherein R 1 is a straight or branched C 1 -C 30 alkyl; R 2 is —CH 2 R 5 , wherein R 5 is an amine of formula (i) wherein R′ and R″ are independently H, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, aryl, or wherein R′ and R″, together with the N carrying them, form a 5-7 membered heterocyclic ring; R 3 is R 2 or —CH(R 5 )OH; R 4 is H or C 1 -C 4 alkyl; and m plus n is at least 1.