Patent ID: 7501476

Claim:
A method for producing a vinylidene terminated polymer comprising: a. providing a quasiliving carbocationically terminated polyolefin polymer, b. contacting the polymer in step a) with a substituted azole quenching agent compound according to Formula I: wherein: R 1 and R 2 are independently alkyl from 1 to 20 carbon atoms, cycloalkyl from about 3 to about 7 carbon atoms, aryl from 6 to about 20 carbon atoms, alkaryl from about 7 to 30 carbon atoms, aralkyl from about 7 to 30 atoms; or R 1 and R 2 together form a fused aromatic ring having from 6 to 10 carbon atoms which may be unsubstituted or substituted with 1 to 4 substituents selected independently from alkyl of one carbon atom to about 10 carbon atoms, cycloalkyl of about 3 to about 7 carbon atoms, aryl of about 6 to about 10 carbon atoms, alkaryl of about 7 to about 10 carbon atoms, aralkyl of about 7 to about 10 carbon atoms, alkoxy of about 1 to 6 carbon atoms, alkylthioether of about 1 to 6 carbon atoms, halo, or amino of the formula —NR*R**, where R* and R** are independently alkyl from about 4 to 10 carbon atoms, cycloalkyl of about 4 to about 7 carbon atoms, aryl of about 6 to about 10 carbon atoms, alkaryl of about 7 to about 10 carbon atoms, aralkyl of about 7 to about 10 carbon atoms; R is alkyl from 1 to 20 carbon atoms, cycloalkyl from about 3 to 7 carbon atoms, aryl from 6 to about 20 carbon atoms, alkaryl from about 7 to 30 carbon atoms, aralkyl from about 7 to 30 atoms, with the proviso that when R is methyl then R 1 and R 2 are independently selected from alkyl from 1 to 20 carbon atoms, cycloalkyl from about 3 to about 7 carbon atoms, aryl from 6 to about 20 carbon atoms, alkaryl from about 7 to 30 carbon atoms, aralkyl from about 7 to 30 atoms; and X is oxygen or sulfur.