Patent ID: 6930160
Filing Date: 2005-08-16
Classification: C08F,C08L

Abstract:
1. A 1-butene based polymer which satisfies the following: (1) it is a crystalline resin having a melting point (Tm−D) in the range of 0 to 100° C., wherein the melting point is defined as the peak top of the peak observed in the highest temperature zone of the melting heat absorption curve obtained by heating a sample of the polymer at a rate of 10° C./minute using the Differential Scanning Calorimeter (DSC), after keeping said sample in advance at −10 ° C. for 5 minutes under a nitrogen atmosphere, (2) it has a stereoregularity index {(mmmm)/(mmrr+rmmr)} which is at most 20, (3) it has a molecular weight distribution (Mw/Mn) measured by the Gel Permeation Chromatography (GPC) method which is at most 4.0, and (4) it has a weight average molecular weight (Mw) measured by GPC method in the range of 10,000 to 1,000,000.