Patent ID: 7396970

Claim:
A process for olefin oligomerization in a reactor, the process comprising: providing a reaction mixture in the reactor, the reaction mixture comprising: at least one reactant comprising at least one olefin monomer and optionally hydrogen, wherein the olefin monomer comprises ethylene; and a catalyst system suitable for the oligomerization of olefin monomers; contacting the olefin monomer and the catalyst system in a reaction zone; monitoring an olefin oligomerization reaction by using low-resolution Raman spectrometry equipment to provide an output signal representative of ethylene or 1-hexene, or a combination thereof, wherein the oligomerization reaction comprises a trimerization reaction; recovering an oligomer, wherein the oligomer comprises 1-hexene; and adjusting the olefin oligomerization reaction in response to the output signal provided by the Raman spectrometry equipment.