1-BUTENE/ETHYLENE COPOLYMER, 1-BUTENE-BASED POLYMER COMPOSITION CONTAINING SAID 1-BUTENE/ETHYLENE COPOLYMER AND PROPYLENE-BASED POLYMER, 1-BUTENE-BASED POLYMER COMPOSITION CONTAINING SAID 1-BUTENE/ETHYLENE COPOLYMER, PROPYLENE-BASED POLYMER, AND ETHYLENE-BASED POLYMER, AND USES THEREOF

WIPO Patent Application WO/2022/191039

A1

The purpose of the present invention is to develop a 1-butene/ethylene copolymer which has an excellent balance between strength and fluidity while having a slow crystallization speed and low crystallinity, has excellent compatibility with a propylene-based copolymer, and can exhibit excellent heat resistance when combined with a propylene-based resin. The present invention pertains to a 1-butene/ethylene copolymer (A) satisfying the following requirements (A1)-(A5). (A1) The content of a constitutional unit (i) derived from 1-butene is in the range of 70-99.9 mol%, and the content of a constitutional unit (ii) derived from ethylene is in the range of 0.1-30 mol% [where the total amount of the constitutional unit (i) and constitutional unit (ii) is 100 mol%]. (A2) The isotactic pentad fraction (mmmm) calculated by 13C-NMR is in the range of 80-99.9%. (A3) The intrinsic viscosity [η] in a decalin solvent at 135ºC is in the range of 0.7-2.0 dl/g. (A4) The melt flow rate (MFR), which is measured at 190ºC under a load of 2.16 kg in accordance with ASTM D1238, is in the range of 1-100 g/10 min. (A5) In calorimetry with a differential scanning calorimeter (DSC), a melting peak is not observed during a second temperature rise.

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ITAKURA MANABU (JP)
NODA KIMINORI (JP)
EGAWA MAKOTO (JP)
KAI YUKI (JP)
KAMIYA NOZOMI (JP)
HOYA HIROSHI (JP)
MIZUMA TAKAHIRO (JP)

PCT/JP2022/009197

September 15, 2022

March 03, 2022

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MITSUI CHEMICALS INC (JP)

C08F210/08; C08L23/10; C08L23/20; C09J123/10; C09J123/20

WO2017213216A1	2017-12-14
WO1998033850A1	1998-08-06
WO2003070788A1	2003-08-28

JP2014500340A	2014-01-09
US20150051350A1	2015-02-19
JP2018522784A	2018-08-16
US20120171405A1	2012-07-05
US20040229064A1	2004-11-18
JP2017504667W
JP2004051676A	2004-02-19

SSINPAT PATENT FIRM (JP)

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