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Title:
ELASTOMER COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE COMPOSITIONS
Document Type and Number:
WIPO Patent Application WO/2004/076556
Kind Code:
A1
Abstract:
An elastomer composition comprising an aromatic vinyl /isoprene block copolymer (a) having two or more poly(aromatic vinyl) blocks in an amount exceeding 10 wt% and below 47.5wt%, an aromatic vinyl/isoprene diblock copolymer (b) in an amount exceeding 47.5wt% and below 85wt%, and polyisoprene (c) having a weight-average molecular weight of 20,000 to 100,000 in an amount exceeding 5wt% and below 20wt%, wherein the aromatic vinyl monomer unit content exceeds 14wt% and is less than 50wt% based on the total amount of the components (a), (b) and (c). The elastomer composition is excellent in initial bond strength, peel strength, and holding power, and is little deteriorated even at relatively low temperatures in the initial bond strength or peel strength, being suitable for pressure-sensitive adhesive compositions.

Inventors:
Kawanabe, Takeshi (Zeon Corporation, 6-1 Marunouchi 2-chom, Chiyoda-ku Tokyo, 100-8323, JP)
Hashimoto, Sadaharu (Zeon Corporation, 6-1 Marunouchi 2-chom, Chiyoda-ku Tokyo, 100-8323, JP)
Application Number:
PCT/JP2004/002262
Publication Date:
September 10, 2004
Filing Date:
February 26, 2004
Export Citation:
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Assignee:
ZEON CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku, Tokyo, 100-8323, JP)
Kawanabe, Takeshi (Zeon Corporation, 6-1 Marunouchi 2-chom, Chiyoda-ku Tokyo, 100-8323, JP)
Hashimoto, Sadaharu (Zeon Corporation, 6-1 Marunouchi 2-chom, Chiyoda-ku Tokyo, 100-8323, JP)
International Classes:
C08L53/02; C09J153/02; C08L9/00; (IPC1-7): C08L53/02; C09J153/02
Foreign References:
JPS60226579A1985-11-11
JPS60223880A1985-11-08
JPS60226578A1985-11-11
Other References:
See also references of EP 1598397A4
Attorney, Agent or Firm:
Tsukawaki, Masahiro (Ohtani Patent Office, Bridgestone Toranomon Building 6F 25-2, Toranomon 3-chom, Minato-ku Tokyo, 105-0001, JP)
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