Abstract: Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity.

Abstract: Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity.

Abstract: A process comprising a) contacting (i) ethylene, (ii) a catalyst system comprising 1) a heteroatomic ligand iron salt complex, or a heteroatomic ligand and an iron salt, (iii) hydrogen, and (iv) optionally an organic reaction medium; and b) forming an oligomer product wherein 1) the oligomer product has a Schulz-Flory K value from 0.4 to 0.8 and 2) the oligomer product comprises (a) less than 1 wt. % of polymer, (b) less than 1 wt. % compounds having greater than 70 carbon atoms, (c) less than 1 wt. % compounds having a weight average molecular weight of greater than 1000 g/mol, or (d) any combination thereof wherein the weight percentage is based on the total weight of the oligomer product.

Abstract: A process comprising a) contacting (i) ethylene, (ii) a catalyst system comprising 1) a heteroatomic ligand iron salt complex, or a heteroatomic ligand and an iron salt, (iii) hydrogen, and (iv) optionally an organic reaction medium; and b) forming an oligomer product wherein 1) the oligomer product has a Schulz-Flory K value from 0.4 to 0.8 and 2) the oligomer product comprises (a) less than 1 wt. % of polymer, (b) less than 1 wt. % compounds having greater than 70 carbon atoms, (c) less thanl wt. % compounds having a weight average molecular weight of greater than 1000 g/mol, or (d) any combination thereof wherein the weight percentage is based on the total weight of the oligomer product.