	US 12,252,576 B2
	Process and catalyst composition for producing linear alpha olefins in high yield by ethylene oligomerization
Sukhdeep Kaur, Faridabad (IN); Rashmi Rani, Faridabad (IN); Gurmeet Singh, Faridabad (IN); Dheer Singh, Faridabad (IN); Anju Chopra, Faridabad (IN); Gurpreet Singh Kapur, Faridabad (IN); and Sankara Sri Venkata Ramakumar, Faridabad (IN)
Assigned to Indian Oil Corporation Limited, Mumbai (IN)
Filed by Indian Oil Corporation Limited, Mumbai (IN)
Filed on Nov. 23, 2022, as Appl. No. 18/058,377.
Claims priority of application No. 202121053985 (IN), filed on Nov. 23, 2021.
Prior Publication US 2023/0159672 A1, May 25, 2023
Int. Cl. C07C 2/32 (2006.01); B01J 31/14 (2006.01); B01J 31/22 (2006.01); C08F 4/52 (2006.01); C08F 4/76 (2006.01)

CPC C08F 4/76 (2013.01) [B01J 31/14 (2013.01); B01J 31/22 (2013.01); C07C 2/32 (2013.01); C08F 4/52 (2013.01)]

19 Claims

1. A catalyst composition for producing linear alpha olefins by oligomerization of ethylene, the catalyst composition consisting of:

(i) a zirconium compound, wherein the zirconium compound is combination of tetrachlorobis (tetrahydrofuran) zirconium (ZrCl₄·2THF), ZrCl₄·2 (N,N-diisobutylacetamide) wherein ZrCl₄·2THF and ZrCl₄·2 (N,N-diisobutylacetamide) are in a mole ratio of 1:1;

(ii) an organoaluminum compound having a formula R¹_nAlY_3-n, or a formula Al₂Y₃R¹₃, wherein R¹represents an alkyl group having 1 to 20 carbon atoms, Y represents Cl, Br, or I, n is a number 1≤n≤2; and

iii) at least one Lewis base, wherein the Lewis base is selected from a group consisting of cyclic and acyclic ethers.