Improvements relating to metal compound catalysed processes

一种液相化学反应介质，包含一或多种反应物(可存在或不存在反应产物)、一或多种溶剂、稀释剂或其它形式的载液、和包含至少一种金属或金属化合物和可选的诸如配体或络合剂等其它化合物的催化剂体系；特征在于所述反应介质还包含溶于所述载液中的聚合物分散剂，所述聚合物分散剂能使所述金属或金属化合物粒子的胶态悬浮体在载液内保持稳定。存在所述聚合物分散剂能更容易地回收和循环利用催化剂失活形成的金属。优选所述聚合物分散剂有足以稳定所述金属或金属化合物的胶态悬浮体的酸性或碱性官能团。 A liquid-phase chemical reaction medium comprises one or more reactants, optionally in the presence of a reaction product(s) and one or more solvents, diluents or other form of liquid carrier, a catalyst system comprising at least a metal or metal compound and optionally further compounds such as ligands or complexing agents; characterized in that the reaction medium further comprises a polymeric dispersant dissolved in said liquid carrier, said polymeric dispersant being capable of stabilizing a colloidal suspension of particles of said metal or metal compound within the liquid carrier. The presence of the polymeric dispersant enables metal formed by catalyst deactivation to be more easily recovered and recycled. Preferably, the polymeric dispersant has sufficiently acidic or basic functionality to stabilize the colloidal suspension of said metal or metal compound.