发明公开
- 专利标题: N-NITROSAMINARMER GUMMIWERKSTOFF
- 专利标题(英): Rubber material that is low in n-nitrosamine
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申请号: EP02754192.9申请日: 2002-06-10
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公开(公告)号: EP1401944A1公开(公告)日: 2004-03-31
- 发明人: SCHMAUDER, Hans-Peter , SCHUNK, Werner , ALBRACHT, Frank , KRAUSE, Karl-Heinz , KRELL, Elvira , MERKMANN, Gerhard
- 申请人: Intech Thüringen GmbH
- 申请人地址: Eisenacher Landstrasse 70 99880 Waltshausen DE
- 专利权人: Intech Thüringen GmbH
- 当前专利权人: Intech Thüringen GmbH
- 当前专利权人地址: Eisenacher Landstrasse 70 99880 Waltshausen DE
- 优先权: DE10130660 20010628
- 国际公布: WO2003002647 20030109
- 主分类号: C08K9/04
- IPC分类号: C08K9/04 ; C08L23/16
摘要:
The invention relates to a rubber material (2) that is low in N-nitrosamine and that is used for rubber articles (1) that are subject to high dynamic-mechanical and thermal stresses. The inventive rubber material comprises a vulcanized rubber mixture, especially on the basis of an ethylene-propylene-diene terpolymer, and admixed thereto conventional mixture ingredients. The inventive rubber material is especially characterized in that a molecular sieve including or not water of crystallization is admixed to the rubber mixture and is charged with a free-radical scavenger (Z), while forming a molecular sieve/free-radical scavenger addition compound (3), the free-radical scavenger binding nitrogen oxides (X1) and/or secondary amines (X2) and/or N-nitrosamines (X3). According to an especially advantageous embodiment of the invention, the rubber material (2) is characterized in that the molecular sieve/free-radical scavenger addition compound (3) additionally contains water of crystallization. The molecular sieve is partially dehydrated with respect to a sufficient basic mole quantity (m) and the molecular sieve comprising the reduced mole quantity (m') of water of crystallization is charged with the free-radical scavenger (Z) so that when water is adsorbed, the free-radical scavenger is desorbed as the content of water of crystallization of the molecular sieve increases, and the free-radical scavenger binds nitrogen oxides (X1), and/or secondary amines (X2) and/or N-nitrosamines (X3).
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