EP 1401944 A1 20040331 - RUBBER MATERIAL THAT IS LOW IN N-NITROSAMINE
Title (en)
RUBBER MATERIAL THAT IS LOW IN N-NITROSAMINE
Title (de)
N-NITROSAMINARMER GUMMIWERKSTOFF
Title (fr)
MATERIAU A BASE DE CAOUTCHOUC PAUVRE EN N-NITROSAMINES
Publication
Application
Priority
- DE 0202113 W 20020610
- DE 10130660 A 20010628
Abstract (en)
[origin: WO03002647A1] 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).
IPC 1-7
IPC 8 full level
C08K 9/04 (2006.01)
CPC (source: EP)
C08K 9/04 (2013.01)
C-Set (source: EP)
Citation (search report)
See references of WO 03002647A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 03002647 A1 20030109; DE 10225653 A1 20030116; EP 1401944 A1 20040331
DOCDB simple family (application)
DE 0202113 W 20020610; DE 10225653 A 20020610; EP 02754192 A 20020610