PROCESS FOR PRODUCING POLYOLEFIN HAVING TERMINAL FUNCTIONAL GROUP

• Main Authors: KIOKA, M, KOJO, S
• Format: Patent
• Language: English; French; German
• Published: 02.05.2001
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to a process for producing a polyolefin having a functional group at its terminal and the object thereof is to provide a process in which the above polyolefin can be obtained with industrial advantages. This object can be attained by the process comprising step (A) producing a terminal-modified polyolefin of the formula P-AlR R , wherein P is a polymer chain and each of R and R is, for example, a hydrocarbon group having 1 to 10 carbon atoms, in the presence of an olefin polymerization catalyst composed of a solid titanium catalyst component (a) and an organoaluminum compound catalyst component (b) optionally together with an organosilicon compound (c) and step (B) producing a polyolefin of the formula P-X, wherein P is as defined above and X is a functional group, by conducting a substitution reaction between -AlR R group of the terminal-modified polyolefin obtained in the above step (A) and a compound having a functional group structure or by first conducting a substitution reaction between -AlR R group of the terminal-modified polyolefin obtained in the above step (A) and a compound having such a structure that a functional group is formed by solvolysis and thereafter conducting solvolysis. The polyolefin having a functional group at its terminal is advantageously used as, for example, a compatibilizer for a polymer blend or a starting material in molecular designing.