M. Rahman,
Principal Research Chemist
Process and Product Research
Surface Chemistry America

AkzoNobel produces Armohib® PC-105 which is commercially used as a paraffin inhibitor and pour point depressant in the production, pipeline transmission and refining of crude oil. Paraffins are aliphatic hydrocarbon waxes present in most crude oils. Paraffin deposition can cause a multitude of problems. These deposits reduce the internal diameter of tubular and pipelines, restrict or block valves, and impede other production equipment, reducing capacity and, in the worst case, stopping production.

The deposition problems can be solved in crude oil by injecting Armohib® PC-105. This is a specially synthesized copolymer that reacts with paraffin molecules to keep them solubilized in the hydrocarbon phase. The Armohib® PC-105 prevents formation of paraffin wax deposits by interfering with the bonding of aliphatic wax molecules to each other. This disrupts the regular structure of the lattice, preventing crystal growth and interfering with crystal deposition.

We can customize the structure of the polymer backbone and functionality of the branches to meet the customer needs for various feedstocks. Recently we developed a series of new paraffin inhibitors by modifying the polymer backbone and functionality of the branches.

Pour points of Armohib® PC-105 and several of our developmental products are shown below. In oils, the pour point generally increases with high paraffin content. The paraffin inhibitors are used to reduce the precipitation temperature of the paraffin wax molecules, as shown in the graph.

-Pour Point for 1500 ppm Inhibitor 18% Paraffin in Hexane Solution (ASTM D97-66)-Armohib® PC-105 is an AkzoNobel commercial product.

AkzoNobel is the world’s leading suppliers of surfactants and rheology modifiers for a multitude of manufacturers and formulators. We are committed to satisfying our customers by providing products that are cost effective and environmentally responsible. For more information please contact your local AkzoNobel Surface Chemistry Account Manager.