AMINE-CONTAINING CATALYST SYSTEM AND METHOD FOR USING THE SAME
PROBLEM TO BE SOLVED: To provide an amine-containing catalyst system for synthesizing a rubbery polymer having a high trans microstructure. SOLUTION: The amine containing catalyst system is used for synthesizing a rubbery polymer, such as a polybutadiene rubber and a styrene-butadiene rubber, having...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an amine-containing catalyst system for synthesizing a rubbery polymer having a high trans microstructure. SOLUTION: The amine containing catalyst system is used for synthesizing a rubbery polymer, such as a polybutadiene rubber and a styrene-butadiene rubber, having a high trans microstructure. The catalyst system, in one embodiment, comprises (a) an organolithium compound, (b) a group IIa metal salt, (c) an organoaluminum compound and (d) an amine compound wherein the amine compound (d) can be selected from the group consisting of (1) a heterocyclic aromatic compound which includes a ring structure having one or more nitrogen atoms as a part of the ring, (2) a heterocyclic non-aromatic compound which includes a ring structure having two or more nitrogen atoms as a part of the ring, (3) an aromatic compound which includes a ring structure substituted with at least one amine and at least one polar functionality-containing group selected from a carboxy group or a hydroxy group, (4) a bicyclic chelating diamine compound and (5) an aliphatic amine which includes a 5-20C alkyl group. COPYRIGHT: (C)2008,JPO&INPIT |
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