Title:
RUBBER COMPOSITION FOR SHOE SOLE AND RUBBER FOAM COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2008/013060
Kind Code:
A1
Abstract:
A rubber composition for shoe soles characterized by being obtained by compounding 100 parts by mass of a polymer ingredient which comprises 10-90 mass% vinyl/cis-polybutadiene rubber (A) comprising 1,4-cis-polybutadiene (a) and 1,2-polybutadiene crystal fibers (b) which have an average fiber length of 200 nm or shorter, an average aspect ratio of 10 or lower, and a melting point of 170°C or higher and in which the number of the crystal fibers having a fiber length of 200 nm or shorter is 90 or more per 25 µm2, 10-50 mass% diene rubber (B) other than the rubber (A), and 2-50 mass% thermoplastic polymer (C) with 2-50 parts by mass of a rubber reinforcement (D). This rubber composition for shoe soles is lightweight, has a moderate hardness, is excellent in tensile strength, tear strength, wearing resistance, and gripping properties, and has excellent dimensional stability after foaming. It is suitable for use as the outer soles of shoes.
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Inventors:
WADA, Takashi (Chiba Petrochemical Factory,8-1, Goi-Minamikaiga, Ichihara-shi Chiba 45, 2900045, JP)
和田 隆 (〒45 千葉県市原市五井南海岸８番の１ 宇部興産株式会社千葉石油化学工場内 Chiba, 2900045, JP)
NAKAMURA, Yukio (Chiba Petrochemical Factory,8-1, Goi-Minamikaiga, Ichihara-shi Chiba 45, 2900045, JP)
和田 隆 (〒45 千葉県市原市五井南海岸８番の１ 宇部興産株式会社千葉石油化学工場内 Chiba, 2900045, JP)
NAKAMURA, Yukio (Chiba Petrochemical Factory,8-1, Goi-Minamikaiga, Ichihara-shi Chiba 45, 2900045, JP)
Application Number:
JP2007/063884
Publication Date:
January 31, 2008
Filing Date:
July 12, 2007
Export Citation:
Assignee:
UBE INDUSTRIES, LTD. (1978-96, Ooaza KogushiUbe-shi, Yamaguchi 33, 7558633, JP)
宇部興産株式会社 (〒33 山口県宇部市大字小串１９７８番地の９６ Yamaguchi, 7558633, JP)
WADA, Takashi (Chiba Petrochemical Factory,8-1, Goi-Minamikaiga, Ichihara-shi Chiba 45, 2900045, JP)
和田 隆 (〒45 千葉県市原市五井南海岸８番の１ 宇部興産株式会社千葉石油化学工場内 Chiba, 2900045, JP)
宇部興産株式会社 (〒33 山口県宇部市大字小串１９７８番地の９６ Yamaguchi, 7558633, JP)
WADA, Takashi (Chiba Petrochemical Factory,8-1, Goi-Minamikaiga, Ichihara-shi Chiba 45, 2900045, JP)
和田 隆 (〒45 千葉県市原市五井南海岸８番の１ 宇部興産株式会社千葉石油化学工場内 Chiba, 2900045, JP)
International Classes:
C08L9/00; A43B13/04; C08J9/04; C08K3/04; C08K3/36; C08L101/00
Attorney, Agent or Firm:
KATAOKA, Makoto et al. (OHTANI PATENT OFFICE, Bridgestone Toranomon Bldg. 6F.25-2, Toranomon 3-chom, Minato-ku Tokyo 01, 1050001, JP)
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