Method for producing modified conjugated diene polymer and...

Details Method for producing modified conjugated diene polymer and... Method for producing modified conjugated diene polymer and...

2007-04-10

2007-04-10

Rabago, Roberto (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S333100, C525S333200, C525S333600, C525S342000, C525S377000, C525S386000, C525S383000

Reexamination Certificate

active

10849786

ABSTRACT:
Disclosed are a method for producing a modified conjugated diene polymer improved in quality stability, more enhanced in low heat buildup and reinforcing ability when used in a rubber composition, excellent in wear resistance, mechanical characteristics and processability, and improved in cold flow; and a rubber composition using the same. The method includes a step of modifying an active end of an active end-containing conjugated diene polymer having a cis-1,4-bond content of 75% or more with an alkoxysilane compound containing at least one functional group selected from the group consisting of (a) an epoxy group, (b) an isocyanate group and (c) a carboxyl group, and a step of adding a condensation accelerator to conduct condensation reaction of the alkoxysilane compound (residue) in an aqueous solution having a pH of 9 to 14 and a temperature of 85 to 180° C.

REFERENCES:
patent: 6462141 (2002-10-01), Kim et al.
patent: 2006/0030677 (2006-02-01), Ozawa et al.
patent: 91/06580 (1991-05-01), None
patent: 01/34658 (2001-05-01), None
patent: 03/046020 (2003-06-01), None
patent: WO 03/046020 (2003-06-01), None
patent: 03/087171 (2003-10-01), None
patent: WO 03/087171 (2003-10-01), None

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