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Title:
ELASTOMER COMPOSITION AND PRESSURE−SENSITIVE ADHESIVES MADE BY USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2003/020825
Kind Code:
A1
Abstract:
An elastomer composition which comprises 33.5 to 95 wt% of (a) an aromatic vinyl−isoprene block copolymer bearing two or more polyaromatic vinyl blocks, 0 to 47.5 wt% of (b) an aromatic vinyl−isoprene diblock copolymer, and 5 to 33 wt% of (c) polyisoprene having a weight−average molecular weight of 20,000 to 100,000 and which has a content of aromatic vinyl monomer units of 14 to 50 wt% based on the total amount of the components (a), (b) and (c)&semi and a pressure−sensitive adhesive comprising the elastomer composition and a tackifier resin. The invention aims at providing a pressure−sensitive adhesive composition which is excellent in initial bond strength at low temperature, peel strength at ordinary temperatures, and holding power at high temperature and which exhibits both excellent pressure−sensitive adhesive properties and excellent die−cutting properties when used in pressure−sensitive adhesive labels&semi and an elastomer composition capable of giving the pressure−sensitive adhesive composition.

Inventors:
TAHARA TAKESHI (JP)
KAWANABE TAKESHI (JP)
Application Number:
PCT/JP2002/008634
Publication Date:
March 13, 2003
Filing Date:
August 28, 2002
Export Citation:
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Assignee:
ZEON CORP (JP)
TAHARA TAKESHI (JP)
KAWANABE TAKESHI (JP)
International Classes:
C08F297/04; C08L53/02; C09J153/02; C08L9/00; (IPC1-7): C08L53/02; C08L9/10
Domestic Patent References:
WO1991002039A11991-02-21
Foreign References:
JPS60223880A1985-11-08
JPS60226578A1985-11-11
JPH01213380A1989-08-28
US5427850A1995-06-27
US5891957A1999-04-06
US5869562A1999-02-09
US5500293A1996-03-19
Other References:
See also references of EP 1424359A4
Attorney, Agent or Firm:
Wada, Yasuro c/o ZEON CORPORATION 6-1 (Marunouchi 2-chome Chiyoda-ku, Tokyo, JP)
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