The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2019
Filed:
Dec. 15, 2016
Saudi Basic Industries Corporation, Riyadh, SA;
Linde Ag, Munich, DE;
Anina Woehl, Munich, DE;
Andreas Meiswinkel, Munich, DE;
Heinz Boelt, Munich, DE;
Bernd H. Mueller, Munich, DE;
Wolfgang Mueller, Munich, DE;
Normen Peulecke, Munich, DE;
Uwe Rosenthal, Munich, DE;
Marco Harff, Munich, DE;
Mohammed H. Al-Hazmi, Riyadh, SA;
Abdullah Alqahtani, Riyadh, SA;
SAUDI BASIC INDUSTRIES CORPORATION, Riyadh, SA;
LINDE AG, Munich, DE;
Abstract
A catalyst composition including: (a) a chromium compound; (b) a ligand of the general structureRRP—N(R)—P(R)—NRRor  (A)RRP—N(R)—P(XR)Ror RRP—N(R)—P(XR), with X═O or S,  (B)wherein R, R, R, R, R, R, Rand Rare independently C-C-alkyl, C-C-aryl, C-C-cycloalkyl, aralkyl, alkylaryl, or trialkylsilyl, or any cyclic derivatives of (A) and (B), wherein at least one of the P or N atoms of the PNPN-unit or PNP-unit is a member of the ring system, the ring system being formed from one or more constituent compounds of structures (A) or (B) by substitution; and (c) an activator or co-catalyst; and a process for tri- and/or tetramerization.