 A.C.-D.C. Spike eliminating bandpass filter |
| I claim: 1. A voltage spike eliminator for A.C. or D.C. voltage lines being used in power systems, ... |
|
| Power line surge suppressor |
| OF THE DRAWING In FIG. 1, an alternating current (A-C) source MG represents a power mains voltage ... |
|
| Circuit for controlling the orientation of a magnetic field |
| These and other needs are satisfied by the device of the present invention which provides a control ... |
|
| One shot firing circuit for power tools |
| The present invention relates generally to portable electric power tools and particularly to ... |
|
| Battery management apparatus for portable electronic devices |
| The present invention is preferably utilized in connection with a patient-worn energy delivery ... |
|
| Flexible carbon fiber, carbon fiber electrode and secondary energy storage devices |
| OF THE INVENTION In accordance with one embodiment of the present invention, as particularly ... |
|
| Lithium polymer battery charger methods and apparatus |
| OF THE PREFERRED EMBODIMENTS Lithium polymer battery cells are unforgiving of overcharge. An ... |
|
| Rechargeable lithium battery having a specific pressure means comprising a polymer gel material |
| A principal object of the present invention is to eliminate the foregoing problems found in the ... |
|
| Polymer electrolyte |
| We claim: 1. A cell electrolyte material comprising polyvinylidene fluoride (PVdF) combined with a ... |
|
| Polymeric gel electrolyte |
| It is an object of the invention to provide novel polymeric gel electrolytes which do not have the ... |
|
|
Oxygen-absorbing resin composition containing water-absorbing polymer, olefin resin and oxygen scavenger
| Details |
Inventors: Koyama, Masayasu; Oda, Yasuhiro; Yamada, Muneki;
Assignee: Toyo Seikan Kaisha Ltd. (Tokyo, JP)
Primary Examiner: Michl; Paul R.
Assistant Examiner: Rajguru; U. K.
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Disclosed is an oxygen-absorbing resin composition valuable for preserving water-containing contents such as drinks and precooked food, which comprises a heat-formable resin or resin composition having an oxygen permeation coefficient larger than 10.sup.-12 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg at a temperature of 20.degree. C. and a relative humidity of 0% and a water adsorption of at least 1% in pure water at 20.degree. C., and an oxygen scavenger incorporated into said resin or resin composition, and a laminate, a liner, a cap and a vessel, which are formed by using this oxygen-absorbing resin composition. |
|
DETAILED DESCRIPTION In the above-mentioned oxygen-absorbing resin composition used in the conventional technique, since the resin per se has a large oxygen permeation coefficient, it is expected that the oxygen-absorbing speed is probably high.
However, the oxygen-absorbing speed is much lower than the oxygen-absorbing speed attained in the case where a paper-packaged oxygen-absorbing agent is directly charged, and the oxygen-absorbing effect is not satisfactory.
It is therefore a primary object of the present invention to provide a heat-formable oxygen-absorbing resin composition having a high oxygen-absorbing speed and an excellent oxygen-absorbing capacity.
Another object of the present invention is to provide a cap or packaging vessel formed by using the above resin composition, which is valuable for preserving water-containing contents such as drinks and precooked foods and is excellent in the sanitary effect because oxygen in the interior is promptly absorbed or permeation of oxygen from the outside is effectively cut.
In accordance with the present invention, there is provided an oxygen-absorbing resin composition comprising a heat-formable resin or resin composition having an oxygen permeation coefficient larger than 10.
sup.
-12 cc.
multidot.
cm/cm.
sup.
2 .
multidot.
sec.
multidot.
cmHg at a temperature of 20.
degree.
C.
and a relative humidity of 0% and a water adsorption of at least 1% in pure water at 20.
degree.
C.
, and an oxygen scavenger incorporated into said resin or resin composition.
The heat-formable resin used in the present invention is a blend of an olefin resin with a water-absorbing resin.
More specifically, it is a blend of a polymer selected from the group consisting of a modified polyethylene oxide, a vinyl alcohol polymer, a sodium acrylate polymer and an acrylic acid/vinyl alcohol copolymer with an olefin resin.
An advantage of using such a polymer blend in the present invention is set forth below.
In order to sufficiently enable the effectiveness of the oxygen scavenger blended in the resin composition, it is necessary to add an oxygen-absorbing agent to a resin having a sufficiently large oxygen permeation coefficient and water retention
|
|
Electrical and Wave 
