Conjugated diene polymer, method for producing conjugated...

Details Conjugated diene polymer, method for producing conjugated... Conjugated diene polymer, method for producing conjugated...

2008-06-16

2010-10-05

Zimmer, Marc S (Department: 1796)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S571000, C524S575000, C525S100000, C525S105000, C525S106000

Reexamination Certificate

active

07807747

ABSTRACT:
A conjugated diene polymer is provided that contains a conjugated diene-based monomer unit and a group represented by Formula (I) below, at least peaks H, M, and L below being present in a molecular weight distribution curve obtained by gel permeation chromatography measurement, and when the total area of the molecular weight distribution curve is 100%, the total peak area of peak H is 3% to 30%, the total peak area of peak M is 5% to 45%, and the total peak area of peak L is 40% to 80%(in Formula (I), R1and R2independently denote a hydrocarbon group having 1 to 4 carbon atoms, a hydrocarbonoxy group having 1 to 4 carbon atoms, a hydroxy group, or a polymer chain containing a conjugated diene-based monomer unit, m denotes an integer of 0 to 10, and A1denotes a polar functional group that does not have an active hydrogen)Peak H: a peak for which the molecular weight at the peak top is higher than the molecular weight at the peak top of peak MPeak M: a peak for which, when the molecular weight at the peak top of peak H is MH, the molecular weight at the peak top is 0.6×MH to 0.8×MHPeak L: a peak for which, when the molecular weight at the peak top of peak H is MH, the molecular weight at the peak top is 0.2×MH to 0.4×MH.

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