Title:
ELASTOMER COMPOSITION AND STOPPER FOR MEDICAL CONTAINER
Document Type and Number:
WIPO Patent Application WO/2011/135927
Kind Code:
A1
Abstract:
Provided is a composition for obtaining a molded article having excellent heat resistance, liquid leakage resistance, and needle retainability. An elastomer composition comprises: 10 to 90 parts by mass of a block copolymer (A) having an aromatic vinyl polymer block and a conjugated diene polymer block; 10 to 90 parts by mass of a block copolymer (P) having an aromatic vinyl polymer block and a copolymer block that is primarily a conjugated diene monomer and an aromatic vinyl monomer (the total amount of block copolymer (A) and block copolymer (P) is 100 parts by mass); 100 to 300 parts by mass of a softener (B) having a dynamic viscosity at 40ºC of 50 to 500 cSt; 1 to 50 parts by mass of a propylene polymer (C) having a bending modulus of 1,000 to 3,000 MPa; and 1 to 50 parts by mass of an aromatic polymer (D).
Inventors:
DATE Noriaki (LTD. NAGOYA FACTORY 30-2 Shinpou-machi, Tokai-sh, Aichi 05, 〒4760005, JP)
Application Number:
JP2011/055257
Publication Date:
November 03, 2011
Filing Date:
March 07, 2011
Export Citation:
Assignee:
ARONKASEI CO., LTD. (1-22-1, Higashigotanda Shinagawa-k, Tokyo 22, 〒1410022, JP)
アロン化成株式会社 (〒22 東京都品川区東五反田１丁目２２番１号 Tokyo, 〒1410022, JP)
アロン化成株式会社 (〒22 東京都品川区東五反田１丁目２２番１号 Tokyo, 〒1410022, JP)
International Classes:
C08L53/02; B65D51/18; C08K3/00; C08L23/10; C08L25/02
Attorney, Agent or Firm:
USAMI Tadao (32-102, Tsukimigaoka Yatomi-cho, Mizuho-ku, Nagoya-sh, Aichi 35, 〒4670035, JP)
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Claims: