Catalyst composition for oligomerization of mono-olefins comprises combination of bivalent nickel compound, aluminum compound and organic Bronsted acid

摘要

The liquid catalyst composition has improved activity due to the presence of a hydrocarbyl aluminum dihalide and an organic Bronsted acid. The catalytic composition comprises a product resulting from the contacting, in any order, a bivalent nickel compound, a hydrocarbylaluminium dihalide of formula AlRX2, in which R is 1-12C hydrocarbyl such as alkyl, aryl, aralkyl, alkylaryl or cycloalkyl and X is Cl or Br, and a Bronsted organic acid. The resulting mixture is preconditioned in a solvent at a controlled temperature and for a determined time before use. An Independent claim is also included for the use of the catalytic composition.