IRON-CONTAINING POLYMER SUITABLE FOR REGENERATING DIESEL EXHAUST PARTICULATE TRAPS

摘要

An iron-containing polymer is provided for use as a fuel additive for promoting trap regeneration. The polymer shows a beneficial balance of physical properties, and is prepared from iron salts by a polymerisation process involving base addition, and subsequent coordination of branched-chain polycarboxylate ligands. The polymer can be stored in highly concentrate form, and shows particular suitability for on board dosing systems.