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1. (WO2017150265) 4-METHYL-1-PENTENE POLYMER, RESIN COMPOSITION, AND MOLDED OBJECT

Pub. No.:    WO/2017/150265    International Application No.:    PCT/JP2017/006278
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: C08F 10/14
B29C 45/00
B29C 47/00
C08J 5/18
C08L 23/20
Applicants: MITSUI CHEMICALS, INC.
三井化学株式会社
Inventors: TANAKA Masakazu
田中 正和
OKAMOTO Masahiko
岡本 勝彦
NAKANO Makoto
中野 誠
MATSUURA Sadahiko
松浦 貞彦
Title: 4-METHYL-1-PENTENE POLYMER, RESIN COMPOSITION, AND MOLDED OBJECT
Abstract:
The present invention addresses the problem of providing a 4-methyl-1-pentene polymer that has high heat resistance and gives molded objects which are inhibited from opacifying upon steam sterilization and of providing a 4-methyl-1-pentene polymer that has high heat resistance and gives films which have improved elongation. The polymers of the present invention are each a 4-methyl-1-pentene polymer in which the content of constituent units derived from 4-methyl-1-pentene is 90-100 mol% and the content of constituent units derived from at least one olefin selected from among ethylene and C3-20 α-olefins excluding 4-methyl-1-pentene is 0-10 mol%. The 4-methyl-1-pentene polymer satisfies the following requirements (a) to (e): (a) to have a mesodiad content (m), as determined by 13C-NMR, of 98-100%; (b) to have a ratio of the z-average molecular weight Mz to the weight-average molecular weight Mw, Mz/Mw, as determined by gel permeation chromatography (GPC), of 2.5-20; (c) to have a ratio of the weight-average molecular weight Mw to the number-average molecular weight Mn, Mw/Mn, as determined by gel permeation chromatography (GPC), of 3.6-30; (d) to have a melt flow rate (MFR), as determined under the conditions of 260ºC and a load of 5 kg in accordance with ASTM D1238, of 0.1-500 g/10 min; and (e) to have a 23ºC-decane soluble content of 5.0 mass% or less.