Functional substances derived from oligoolefins having functional groups at the ends

摘要

Disclosed herein is oligo(1-butene), which is a thermal decomposition product of poly(1-butene), having an average terminal vinylidene group number per molecule (f_TVD value) of from 1. 53 to 1. 75, a number-average molecular weight (M_n) of from 1,000 to 5, 000, and polydispersity (M_w/M_n) of 2.5 or less and comprising oligo (1-butene) containing vinyl idene groups at both ends thereof and oligo (1-butene) containing a vinylidene group at a single end thereof, said oligo (1-butene) represented by the following formula (1a):

wherein R^b represents H₂- or H₂C= and n is an integer of from 15 to 100.