Title:
OXYGEN ABSORBER
Document Type and Number:
WIPO Patent Application WO/2005/053837
Kind Code:
A1
Abstract:
An oxygen absorber which has a high oxygen-absorbing ability without necessitating the addition thereto of a transition metal salt serving as a catalyst for heightening an oxygen-absorbing ability and which retains high mechanical strength even after oxygen absorption. The oxygen absorber contains as an active ingredient a product of the cyclization of a conjugated diene polymer. The cyclization product preferably has a percentage decrease in unsaturated-bond amount of 10% or higher and a weight-average molecular weight of 1,000 to 1,000,000. The oxygen absorber may further contain a thermoplastic resin. The oxygen absorber preferably has an antioxidant content of 500 ppm or lower. The absorber may be in the form of a film, sheet, or powder.
Inventors:
KITAHARA SHIZUO (JP)
TERADA KAZUYO (JP)
TERADA KAZUYO (JP)
Application Number:
PCT/JP2004/017611
Publication Date:
June 16, 2005
Filing Date:
November 26, 2004
Export Citation:
Assignee:
ZEON CORP (JP)
KITAHARA SHIZUO (JP)
TERADA KAZUYO (JP)
KITAHARA SHIZUO (JP)
TERADA KAZUYO (JP)
International Classes:
B01J20/26; B01J20/28; A23L3/3436; C01B13/02; C08C19/10; C08F8/48; C08L15/00; C08L101/00; (IPC1-7): B01J20/26; A23L3/3436
Domestic Patent References:
| WO2003033255A1 | 2003-04-24 |
Foreign References:
| JP2003012944A | 2003-01-15 | |||
| JP2002146217A | 2002-05-22 | |||
| JP2003292682A | 2003-10-15 | |||
| JPS641705A | 1989-01-06 | |||
| JPS61163904A | 1986-07-24 | |||
| JPS60223804A | 1985-11-08 |
Other References:
See also references of EP 1704917A4
Attorney, Agent or Firm:
Yamashita, Akihiko c/o Tokyo, Central Patent Firm (4th Floor Oak Building Kyobashi, 16-10,
Kyobashi 1-chome, Chuou-k, Tokyo 31, JP)
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