Patent
Propylene-based resin
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TLDR
In this paper, the authors proposed a method to obtain a propylene-based resin having excellent flexibility, transparency and heat resistance, and also excellent in moldability, where they used a temperature increasing eluting fractionation method and expressed the axis of abscissas as elution temperatures ( deg.C).Abstract:
PROBLEM TO BE SOLVED: To obtain a propylene-based resin having excellent flexibility, transparency and heat resistance, and also excellent in moldability. SOLUTION: This propylene-based resin has 0.01-10 g/10 min melt flow rate, 10-40 mol.% of ethylene content, 6-16 of a ratio (Mw/Mn) of weight-average molecular weight Mw to number-average molecular weight Mn determined by gel permeation chromatography(GPC), and in an elution curve (Figure 1) fractionated by a temperature increasing eluting fractionation method and expressed by the axis of abscissas as elution temperatures ( deg.C) and the axis of ordinates as integrated weight connection (wt.%) of the eluted component, and amount of the component (A-component) eluted below 20 deg.C is 20-53 wt.%, an amount of the component (B-component) eluted from 20 deg.C to below 100 deg.C is 20-75 wt.% and an amount of the component (C-component) eluted above 100 deg.C is 5-50 wt.%, where the total of the components A, B and C is 100 wt.%, a weight ratio of the B-component to the A-component (B/A) is more than 0.8, and a peak top temperature in the C-component is >=120 deg.C.read more
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