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US 6,281,305 B1Granted
Iron-based catalyst for producing oligomers of conjugated dienes
AssigneeBridgestone Corporation
InventorSteven Luo
Life of this patent
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Abstract
A catalyst composition that is the combination of or the reaction product of ingredients including an iron-containing compound, a hydrogen phosphite, a halogen-containing compound, and an organoaluminum compound. This catalyst composition is particularly useful for preparing oligomers of conjugated dienes.
Claims22
A catalyst composition that is the combination of or the reaction product of ingredients comprising:
- (a) an iron-containing compound;
- (b) a hydrogen phosphite;
- (c) a halogen-containing compound;
- and
- (d) an organoaluminum compound.
2 more elements
A catalyst composition formed by a process comprising the step of combining:
- (a) an iron-containing compound;
- (b) a hydrogen phosphite;
- (c) a halogen-containing compound;
- and
- (d) an organoaluminum compound.
2 more elements
A process for forming conjugated diene oligomers comprising the step of:
- oligomerizing conjugated diene monomers in the presence of a catalytically effective amount of a catalyst composition formed by combining:
- (a) an iron-containing compound;
- (b) a hydrogen phosphite;
- (c) a halogen-containing compound;
- and
- (d) an organoaluminum compound.
3 more elements
Dependencies are inferred from the claim text.