FILM FOR LIQUID PACKAGING CONTAINERS AND LIQUID PACKAGING CONTAINER

Title:

FILM FOR LIQUID PACKAGING CONTAINERS AND LIQUID PACKAGING CONTAINER

Document Type and Number:

WIPO Patent Application WO/2016/039257

Kind Code:

A1

Abstract:

A film for liquid packaging containers, having at least one layer comprising a resin composition (X) containing polypropylene resin (a) and at least one type of hydrogenated block copolymer (b). The hydrogenated block copolymer (b) is a hydrogenated product of a block copolymer including: a polymer bock (A) comprising mainly an aromatic vinyl compound unit; and a polymer block (B) comprising mainly an isoprene (Ip) unit, a butadiene (Bd) unit, or an isoprene (Ip) unit and a butadiene (Bd) unit. In the resin composition (X), the hydrogenated block copolymer (b) has a phase-separated structure forming both (i) an island phase or co-continuous structure, having a long axis of at least 1 µm, and (ii) an island phase having a long axis of no more than 300 nm. The mass ratio [(a)/{(a)+(b)}] between the polypropylene resin (a) and the hydrogenated block copolymer (b) is 61/100-95/100 in the resin composition (X).

Inventors:

NOJIMA YUSUKE (JP)
TANAKA YUSUKE (JP)
JOGO YOSUKE (JP)
OSHITA SHINYA (JP)

Application Number:

PCT/JP2015/075135

Publication Date:

March 17, 2016

Filing Date:

September 03, 2015

Export Citation:

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Assignee:

KURARAY CO (JP)

International Classes:

C08J5/18; A61J1/00; A61J1/05

Domestic Patent References:

WO2015156334A1

2015-10-15

Foreign References:

JP2003287163A	2003-10-10
JPH04314452A	1992-11-05
JPH1067894A	1998-03-10
JP2004346109A	2004-12-09
JPH0670971A	1994-03-15
JP2009227917A	2009-10-08

Other References: