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US 6,160,063 AGranted
Iron-based catalyst for producing binary cis-1,4-/1,2-polybutadiene
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, an organomagnesium compound, and a cyclic hydrogen phosphite. This catalyst composition is particularly useful for polymerizing 1,3-butadiene into binary cis-1,4/1,2-polybutadiene.
Claims20
A catalyst composition that is the combination of or the reaction product of ingredients comprising:
- (a) an iron-containing compound;
- (b) an organomagnesium compound;
- and
- (c) a cyclic hydrogen phosphite.
1 more element
A catalyst composition formed by a process comprising the step of combining:
- (a) an iron-containing compound;
- (b) an organomagnesium compound;
- and
- (c) a cyclic hydrogen phosphite.
1 more element
A process for preparing binary cis-1,4-/1,2-polybutadiene comprising the step of:
- polymerizing 1,3-butadiene in the presence of a catalytically effective amount of a catalyst composition formed by combining:
- (a) an iron-containing compound;
- (b) an organomagnesium compound;
- and
- (c) a cyclic hydrogen phosphite.
2 more elements
Dependencies are inferred from the claim text.