MODIFIED HIGH CIS CONJUGATED DIENE POLYMER AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a modified conjugated diene polymer and to provide a production method thereof.SOLUTION: This modified conjugated diene polymer is produced by a method including: forming a conjugated diene polymer by a polymerization step; and reacting the polymer with a first modif...

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Hauptverfasser:	CHENG KUEI-LUN, LEE CHIHNG
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a modified conjugated diene polymer and to provide a production method thereof.SOLUTION: This modified conjugated diene polymer is produced by a method including: forming a conjugated diene polymer by a polymerization step; and reacting the polymer with a first modifier, and then with a second modifier. The modified conjugated diene polymer includes a cis-1,4 structure exceeding 97%. The PDI value of the modified conjugated diene polymer is larger than 1.8 and less than 2.5. The first modifier has a chemical formula: X-R1-Si(R2). The second modifier has a chemical formula: R3-Si(R4).