Title:
ELASTIC PROPYLENE-OLEFIN COPOLYMER AND ITS PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2002241437
Kind Code:
A
Abstract:
To provide an elastic propylene-olefin copolymer having a specific stereoregularity that can be used for various molded articles having very good flexibility, little stickiness, excellent heat resistance and transparency, and excellent elastic-recovering properties, as well as excellent low-temperature properties.
This propylene-olefin copolymer comprises 99.99-85 mol% of a propylene unit and 0.01-15 mol% of an olefin unit other than propylene, based on the mole number of the monomer units constituting the copolymer, wherein the melting point is 110-150°C, the melt flow rate(MFR) is 0.4-40 g/10 min, the isotactic pentad fraction (mmmm) is 0.20-0.55, and the triad chain fractions: mm, rr and mr, have a relationship: mm>rr>mr.
Inventors:
SHIODA TSUTOMU
HACHIMAN GOJI
OKI YOSHIYUKI
HACHIMAN GOJI
OKI YOSHIYUKI
Application Number:
JP2001039986A
Publication Date:
August 28, 2002
Filing Date:
February 16, 2001
Export Citation:
Assignee:
CHISSO CORP
CHISSO SEKIYU KAGAKU KK
CHISSO SEKIYU KAGAKU KK
International Classes:
C08F210/06; (IPC1-7): C08F210/06
Previous Patent: PROPYLENE HOMOPOLYMER AND ITS PRODUCTION METHOD
Next Patent: ELASTIC PROPYLENE-ETHYLENE COPOLYMER AND ITS PRODUCTION METHOD
Next Patent: ELASTIC PROPYLENE-ETHYLENE COPOLYMER AND ITS PRODUCTION METHOD