AIR-IMPERMEABLE FILM AND PNEUMATIC TIRE

WIPO Patent Application WO/2013/042167

A1

Provided is an air-impermeable film which can be imparted with flexibility without the need of increasing the ratio of a rubber that constitutes a dispersed phase. An air-impermeable film comprising (A) a thermoplastic polyester elastomer which comprises a block copolymer containing a polyester as a hard segment and has a melting point of 180 - 230˚C and (B) a rubber at a content ratio (i.e., (A)/(B)) of 90/10 - 40/60 by mass, wherein the component (A) is melt-kneaded with the component (B) to dynamically crosslinking these components with each other, thereby forming a continuous phase composed of the component (A) and a dispersed phase composed of the component (B). The film has an air permeation coefficient (80˚C) of 5×1013 fm2/Pa·s or less and a Young's modulus of 120 MPa or less.

SHIMIZU TOSHIKI (JP)
INATA SHIGENORI (JP)
KURAHASHI TOMOHIKO (JP)
MATSUNO JUNZO (JP)
ENDO TATSUYA (JP)
UKYO SHIGEO (JP)
DAITOKU MOMOKO (JP)

PCT/JP2011/005320

March 28, 2013

September 21, 2011

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TOYO TIRE & RUBBER CO (JP)
TOYO BOSEKI (JP)
SHIMIZU TOSHIKI (JP)
INATA SHIGENORI (JP)
KURAHASHI TOMOHIKO (JP)
MATSUNO JUNZO (JP)
ENDO TATSUYA (JP)
UKYO SHIGEO (JP)
DAITOKU MOMOKO (JP)

C08J5/18; B29D30/06; B60C5/14; C08K5/00; C08L21/00; C08L67/00

JPH1035232A	1998-02-10
JP2008309304A	2008-12-25
JPH08259741A	1996-10-08
JPH11292990A	1999-10-26
JP2010260280A	2010-11-18
JP2006224854A	2006-08-31

TSUTADA, Akiko et al. (JP)
Shoko Tsutada (JP)

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