HIGHLY SATURATED NITRILE RUBBER FOR SEAL MATERIAL AND CROSS-LINKED RUBBER

• US 20100324226A1
• Filed: 08/08/2008
• Published: 12/23/2010
• Est. Priority Date: 08/10/2007
• Status: Abandoned Application

• Current Assignee: ZEON Corporation
• Original Assignee: ZEON Corporation
• Inventors: Hosotani, Daizo
• Application Number:
  US12/667,336
• Publication Number:
  US 20100324226A1
• Time in Patent Office: Days
• US Class Current: 525/338
• CPC Class Codes: C08F 2/26 anionic
• CPC Class Codes: C08F 236/12 with nitriles
• CPC Class Codes: C08K 5/14 Peroxides
• CPC Class Codes: C08L 15/005 Hydrogenated nitrile rubber
• CPC Class Codes: C09K 2200/0612 Butadiene-acrylonitrile rubber
• CPC Class Codes: C09K 3/10 Materials in mouldable or extrudable form for sealing or packing joints or covers filling pastes C09D5/34

Abstract

A highly saturated nitrile rubber for a seal material used for sealing a solution containing an alcohol, the highly saturated nitrile rubber for a seal material having an iodine value of 80 or less and a content of a surfactant of 0.4 wt % or less. According to the present invention, it is possible to effectively prevent leaching of a contained ingredient by a water soluble ink, a fuel oil containing alcohol, or another solution containing an alcohol and possible to give cross-linked rubber superior in heat aging resistance.

Claims

1. A highly saturated nitrile rubber for a seal material used for sealing a solution containing an alcohol, wherein

an iodine value is 80 or less and a content of a surfactant is 0.4 wt % or less.

2. The highly saturated nitrile rubber for a seal material as set forth in claim 1, wherein a content of a soap is 0.08 wt % or less.

3. The highly saturated nitrile rubber for a seal material as set forth in claim 1, wherein an amount of methanol extraction is 0.7 wt % or less.

4. The highly saturated nitrile rubber for a seal material as set forth in claim 1, wherein said highly saturated nitrile rubber is one produced by performing a hydrogenation reaction on nitrile rubber obtained by emulsion polymerization using an anionic surfactant.

5. The highly saturated nitrile rubber for a seal material as set forth in claim 4, wherein said anionic surfactant is a caprate.

6. A cross-linkable nitrile rubber composition for a seal material obtained by blending a highly saturated nitrile rubber as set forth in claim 1 with a cross-linking agent.

7. A cross-linked rubber for a seal material obtained by cross-linking a cross-linkable nitrile rubber composition as set forth in claim 6.

8. The cross-linked rubber for a seal material as set forth in claim 7, used as a seal material for an ink cartridge.

9. The cross-linked rubber for a seal material as set forth in claim 7, used as a seal material for fuel oil.

10. The cross-linked rubber for a seal material as set forth in claim 9, wherein said fuel oil is ethanol-containing gasoline or ethanol-containing diesel oil.