Davidson, Davidson & Kappel, LLC
Monomeric neodymium carboxylate and its use in polymerization of conjugated diene
The invention is related to a novel compound represented by NdHA4 wherein A is a carboxylate, and to a diene polymerization catalyst using the novel compound. NdHA4 has monomeric structure and does not contain water, bases and salts. NdHA4 is mixed with a halogen compound and an organic metal compound to prepare a catalyst system. The catalyst system in the polymerization of 1,3-butadiene (BD) or isoprene produces high cis polydiene with a high activity (100 g BD/4.0&times;10&#8722;5 mole Nd) and without gel formation. The polydiene thus obtained is useful for tires and golf balls and as a polystyrene modifier.
Korea Kumho Petrochemical Co., Ltd.
C C C
C08F C07F C08F
inventional inventional inventional
A Ju Gwang Hoon Young Chan Seung Hwon
Kim Kwag Jang Lee