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US 12,377,404 B2Granted
Homogeneous single site catalyst and its use in preparing linear polyethylene
AssigneesCouncil of Scientific and Industrial Research, Gail (India) Limited
InventorsSamir Hujur Chikkali, Shailaja Jawoor, Rajkumar S. Birajdar, Sandip B. Pawal, Nandakumar Thenmani, Parivesh Chugh
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Abstract
The present invention discloses a homogeneous, single site catalyst of formula (I) and a process for preparation thereof using a ligand. The present invention further discloses a process for preparation of linear polyethylene of high molecular weight and degree of crystallinity by using the homogeneous, single site catalyst of formula I.
Claims9
A homogeneous, single site catalyst of formula (I)
- 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.
7 more elements
Dependencies are inferred from the claim text.