	US 11,873,264 B2
	Ethylene oligomerization processes
Brooke L. Small, Kingwood, TX (US); Orson L. Sydora, Houston, TX (US); and Ronald D. Knudsen, Saratoga Springs, UT (US)
Assigned to Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed by Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed on Nov. 29, 2022, as Appl. No. 18/059,485.
Application 18/059,485 is a division of application No. 17/330,523, filed on May 26, 2021, granted, now 11,667,590.
Prior Publication US 2023/0093448 A1, Mar. 23, 2023
Int. Cl. C07C 2/30 (2006.01); B01J 31/12 (2006.01); B01J 31/14 (2006.01)

CPC C07C 2/30 (2013.01) [B01J 31/12 (2013.01); B01J 31/128 (2013.01); B01J 31/143 (2013.01); C07C 2531/14 (2013.01); C07C 2531/22 (2013.01)]

25 Claims

1. A process comprising:

a) contacting

i) ethylene,

ii) a catalyst system comprising

1) a zirconium compound having the formula ZrX¹_mY¹_q, wherein each X¹independently is a halide, each Y¹independently is a hydrocarboxide, a dihydrocarbylazanide, a hydrocarbylcarboxylate, a hydrocarbylsulfonate, or a β-diketonate, m is in a range from 0 to 4, q is in a range from 0 to 4, and m+q is an integer from 2 to 4, and

2) a hydrocarbylmetal compound,

iii) hydrogen, and

iv) optionally, an organic reaction medium; and

b) forming an oligomer product in a reaction zone; and

wherein the oligomer product has a Schulz-Flory K value from 0.4 to 0.8.