Method Of Preparing Conjugated Diene-Based Polymer By Continuous Polymerization
AssigneeLG Chem, Ltd.
InventorsSoo Young Choi, Suk Joon Yoo, Jeong Heon Ahn, Sung Ho Park, Suk Youn Kang
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Abstract
The present invention relates to a method of preparing a conjugated diene-based polymer by continuous polymerization using two or more reactors, and relates to a method of preparing a conjugated diene-based polymer which is capable of providing a conjugated diene-based polymer having improved Mooney viscosity and excellent cis 1,4 bond content and linearity, by controlling the injection amount of a conjugated diene-based monomer to each reactor in a specific ratio and resolving the deterioration phenomenon of physical properties, which might be generated in continuous reaction.
Claims7
A method of preparing a conjugated diene-based polymer comprising:
- firstly injecting a diene-based monomer to a first reactor to perform a polymerization reaction in a presence of a catalyst composition in a hydrocarbon solvent, and transporting a polymerization reaction product to a second reactor;
- and
- secondly injecting the diene-based monomer to the second reactor to perform a polymerization reaction in a presence of a hydrocarbon solvent and a catalyst composition,
- wherein injection amounts of the diene-based monomer satisfy the following Mathematical Formula 1:
- 2.7≤x/y≤6.0 [Mathematical Formula 1]
- in Mathematical Formula 1, x is a first injection amount (weight) of the diene-based monomer, and y is a second injection amount (weight) of the diene-based monomer,
- wherein the method is a continuous preparation method.
Dependencies are inferred from the claim text.