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US 2001/0012878 A1Published application
Preparation of conjugated diene polymers by using an iron-based catalayst system
AssigneeBridgestone Corporation
InventorSTEVEN LUO
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Abstract
A process for preparing conjugated diene polymers by polymerizing conjugated diene monomers in the presence of a catalyst composition that is formed by combining an iron-containing compound, a hydrogen phosphite, and an organoaluminum compound.
Claims20
A process for preparing conjugated diene polymers comprising the step of:
- polymerizing conjugated diene monomers in the presence of a catalytically effective amount of a catalyst composition that is formed by combining:
- (a) an iron-containing compound;
- (b) a hydrogen phosphite;
- and
- (c) an organoaluminum compound.
2 more elements
A polybutadiene polymer that is prepared by a process comprising the step of:
- polymerizing 1,3-butadiene monomer with a catalyst composition that is formed by combining (a) an iron-containing compound, (b) a hydrogen phosphite, and (c) an organoaluminum compound.
Dependencies are inferred from the claim text.