US 12,377,404 B2
Homogeneous single site catalyst and its use in preparing linear polyethylene
Samir Hujur Chikkali, Pune (IN); Shailaja Jawoor, Pune (IN); Rajkumar S. Birajdar, Pune (IN); Sandip B. Pawal, Pune (IN); Nandakumar Thenmani, Noida (IN); and Parivesh Chugh, Noida (IN)
Assigned to Council of Scientific & Industrial Research, New Delhi (IN); and GAIL (India) Ltd., Noida (IN)
Appl. No. 17/928,335
Filed by COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH, New Delhi (IN); and GAIL (INDIA) LTD, Noida (IN)
PCT Filed May 28, 2021, PCT No. PCT/IN2021/050520
§ 371(c)(1), (2) Date Nov. 29, 2022,
PCT Pub. No. WO2021/240549, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 202011022536 (IN), filed on May 29, 2020.
Prior Publication US 2023/0201815 A1, Jun. 29, 2023
Int. Cl. B01J 31/18 (2006.01); B01J 37/04 (2006.01); C08F 2/06 (2006.01); C08F 4/6592 (2006.01); C08F 10/02 (2006.01)
CPC B01J 31/1825 (2013.01) [B01J 37/04 (2013.01); C08F 2/06 (2013.01); C08F 4/6592 (2013.01); C08F 10/02 (2013.01); B01J 2531/46 (2013.01); B01J 2531/48 (2013.01); B01J 2531/62 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A homogeneous, single site catalyst of formula (I)

OG Complex Work Unit Chemistry
wherein
R1-R3 are selected from the group consisting of H, Alkyl and Aryl;
R4-R6 are selected from the group consisting of H, Alkyl, Aryl, OMe and OEt;
R7-R10 are selected from the group consisting of H, Alkyl and Aryl;
M is selected from the group consisting of Cr, Ti, Zr and Hf;
X is selected from the group consisting of Cl, Br and I;
n is selected from the group consisting of 2, 3 and 4;
Y is selected from the group consisting of S, O, —NH and —CH2; and
E is CH2.