| abstract |
The invention thus crude oils and produced therefrom, distillation residues containing products containing at least one alkylphenol-aldehyde resin having a repetitive structural unit of the formula wherein R 1 is a branched alkyl or alkenyl radical having 10 to 40 C atoms, which carries at least one carboxyl, carboxylate and / or ester group, R 2 is hydrogen or R 1 R 3 is hydrogen or an alkoxy group of the formula - (AO) m -H, A is a C 2 - to C 4 -alkylene group, m for a number from 1 to 100, R 4 is hydrogen, a C 1 - to C 11 -alkyl radical or a carboxyl group, R 5 is C 1 -C 200 -alkyl or -alkenyl, OR 6 or OC (O) -R 6 , R 6 is C 1 -C 200 -alkyl or -alkenyl, n for a number from 1 to 100 and k is 1 or 2, the use of the alkylphenol-aldehyde resin to break down emulsions of water and crude oils or products derived therefrom, the use of the alkylphenol-aldehyde resin to improve the cold flowability of crude oils and derivatives thereof, and the use of the alkylphenol-aldehyde resin as an asphalt dispersant in crude oils and derived products. |