Conjugated Diene-Based Polymer and Method for Preparing the Same
AssigneeLG Chem, Ltd.
InventorsSu Hwa Kim, Hyo Jin Bae, Sung Ho Park, Soo Young Choi, Jeong Heon Ahn
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Abstract
A conjugated diene-based polymer catalyzed with a lanthanide rare earth element, and having high linearity and improved compounding properties, and a method for preparing the same are provided. The conjugated diene-based polymer catalyzed with a lanthanide rare earth element has high linearity, and if applied to a rubber composition, may show excellent processability, tensile strength and viscoelasticity.
Claims12
A conjugated diene-based polymer catalyzed with a lanthanide rare earth element, wherein the conjugated diene-based polymer has a ratio ((−S/R)/MWD) of a stress/relaxation (S/R) value at 100° C. and molecular weight distribution (MWD) of 0.30 or more.
A conjugated diene-based polymer catalyzed with a lanthanide rare earth element, wherein the conjugated diene-based polymer has a ratio ((−S/R)/MWD) of a stress/relaxation (S/R) value at 100° C. and molecular weight distribution (MWD) of 0.30 or more and comprises a functional group derived from a modifier represented by the following Formula 4 or Formula 5:
- wherein, in Formula 4 or Formula 5,
- Z1 and Z2 are each independently a silane group, N,N-2 substituted aminophenyl group, an imine group or a cyclic amino group,
- R1 and R7 are each independently a single bond or a divalent organic group,
- R3 and R6 are each independently a single bond or a divalent organic group;
- or R3 and R6 are trivalent organic groups which are connected with R4 or R5, and R8 or R9, respectively, to form rings, R4 and R8 are each independently a monovalent organic group;
- or R4 and R8 are divalent organic groups which are connected with R3 or R5, and R6 or R9, respectively, to form rings, and
- R5 is a monovalent organic group;
- or a divalent organic group which is connected with R3 or R4 to form a ring.
Dependencies are inferred from the claim text.