A selectivated molecular sieve, e.g., ZSM-22 or ZSM-23, is used as olefin oligomerization catalyst to provide product, e.g., octenes and dodecenes from butene, having a low degree of branching and hindered double bonds....http://www.google.es/patents/US7425662?utm_source=gb-gplus-sharePatente US7425662 - Oligomerization of olefins
