RELEASE AGENT AND RELEASE SHEET - MITSUBISHI CHEM CORP

Title:

RELEASE AGENT AND RELEASE SHEET

Document Type and Number:

WIPO Patent Application WO/2004/037942

Kind Code:

A1

Abstract:

A release agent which comprises as major ingredients an ingredient (A) which is an olefin elastomer having a density of 0.855 to 0.868 g/cc, excluding 0.868 g/cc and an ingredient (B) which is an ethylene/&agr -olefin copolymer having a density of 0.868 to 0.970 g/cc, wherein the difference in average density between the ingredient (A) and the ingredient (B) is 0.005 g/cc or larger and the proportion of the ingredient (A) to the ingredient (B) is from 90/10 to 10/90 (by weight). This release agent contains no gas-generating silicone ingredients. It has satisfactory releasability from various pressure-sensitive adhesives and changes little in peel force. Even after the release sheet applied to pressure-sensitive adhesives is allowed to stand at elevated temperatures, it can retain low peel force.

Inventors:

YAMAMOTO SATORU (JP)
NISHIZAWA OSAMU (JP)
NOZAWA KOUTAROU (JP)
AKASHIGE ETSUSHI (JP)
SEKI MOTOHIRO (JP)
KUNITAKE MAKI (JP)

Application Number:

PCT/JP2003/013620

Publication Date:

May 06, 2004

Filing Date:

October 24, 2003

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)
YAMAMOTO SATORU (JP)
NISHIZAWA OSAMU (JP)
NOZAWA KOUTAROU (JP)
AKASHIGE ETSUSHI (JP)
SEKI MOTOHIRO (JP)
KUNITAKE MAKI (JP)

International Classes:

B29C33/62; B29C33/68; B29C37/00; C08L23/08; C08L23/16; C08L101/00; (IPC1-7): C09K3/00; C08L23/08; C09J7/02

Foreign References:

JP2001246697A	2001-09-11
JPS60245549A	1985-12-05
JPH0649418A	1994-02-22
JP2002309227A	2002-10-23
JP2001003009A	2001-01-09

Other References: