Rubber mixtures for roller coatings

Abstract

This invention relates to a rubber mixture containing a nitrile rubber, a metal salt of an acrylate, a liquid acrylate and optionally other additives, a process for its preparation, and use for all types of molded articles, in particular roller coatings.

What is claimed is:  
     
         1 . A rubber mixture comprising: 
 a) at least one nitrile rubber;    b) at least one metal salt of an acrylate;    c) at least one liquid acrylate, optionally applied to a carrier, and    d) optionally other additives and/or fillers.    
     
     
         2 . A rubber mixture according to  claim 1 , wherein said at least one nitrile rubber is selected from the group consisting of NBR, partially hydrogenated NBR and completely hydrogenated NBR or mixtures of two or more of these.  
     
     
         3 . A rubber mixture according to  claim 1 , wherein said at least one metal salt of an acrylate is a zinc diacrylate or a zinc dimethylacrylate or a mixture.  
     
     
         4 . A rubber mixture according to  claim 1 , wherein the liquid acrylate is butanediol dimethacrylate or trimethylolpropane trimethacrylate or a mixture.  
     
     
         5 . A rubber mixture according to  claim 1 , wherein said rubber mixture also contains a siliceous filler, carbon black, zinc oxide, magnesium oxide or a mixture of two or more of these components. 
 A rubber mixture according to  claim 1 , wherein said rubber mixture contains vulcanization retarders and/or vulcanization accelerators.    A cross-linkable rubber mixture comprising a rubber mixture, wherein said rubber mixture comprises: 
 a) at least one nitrile rubber;  
 b) at least one metal salt of an acrylate;  
 c) at least one liquid acrylate, optionally applied to a support, and  
 d) optionally other additives and/or fillers.  
   
     
     
         8 . A crosslinkable rubber mixture according to claim  7  wherein said at least one nitrile rubber is selected from the group consisting of NBR, partially hydrogenated NBR and completely hydrogenated NBR or mixtures of two or more of these.  
     
     
         9 . A crosslinkable rubber mixture according to claim  7 , wherein said at least one metal salt of an acrylate is a zinc diacrylate or a zinc dimethylacrylate or a mixture.  
     
     
         10 . A crosslinkable rubber mixture according to claim  7 , wherein the liquid acrylate is butanediol dimethacrylate or trimethylolpropane trimethacrylate or a mixture.  
     
     
         11 . A crosslinkable rubber mixture according to claim  7 , wherein said rubber mixture also contains a siliceous filler, carbon black, zinc oxide, magnesium oxide or a mixture of two or more of these components.  
     
     
         12 . A crosslinkable rubber mixture according to claim  7 , wherein said rubber mixture contains vulcanization retarders and/or vulcanization accelerators.  
     
     
         13 . A process for the preparation of a rubber mixture comprising the step of mixing in a mixing unit: 
 a) at least one nitrile rubber;    b) at least one metal salt of an acrylate;    c) at least one liquid acrylate,, optionally applied to a carriers and    d) optionally other additives and/or fillers.    
     
     
         14 . A process according to  claim 13 , wherein said mixture is crosslinked.  
     
     
         15 . A process according to  claim 14 , wherein said mixture is crosslinked with a peroxide.  
     
     
         16 . A molded article comprising a rubber mixture comprising 
 a) at least one nitrile rubber;    b) at least one metal salt of an acrylate;    c) at least one liquid acrylate, optionally applied to a carrier, and    d) optionally other additives and/or fillers.    
     
     
         17 . A coating for a roller comprising a rubber mixture comprising: 
 a) at least one nitrile rubber;    b) at least one metal salt of an acrylate;    c) at least one liquid, acrylate, optionally applied to a support and    d) optionally other additives and/or fillers.