Product with antistatic properties

Abstract

A product made from plastic and composed, at least in part, of a thermoplastic molding composition which comprises polyamide and comprises from 3 to 30% by weight of a conductivity black, where the conductivity black is defined by the following parameters: a) DBP absorption of from 100 to 300 ml/100 g; b) a specific surface area of from 30 to 180 m 2 /g; c) an ash content of less than 0.1% by weight and d) a grit content of not more than 25 ppm, has improved heat-ageing resistance, and also improved resistance to peroxide-containing motor fuels.

What is claimed is:  
     
         1 . A product made from plastic and composed, at least in part, of a thermoplastic molding composition which comprises polyamide and comprises from 3 to 30% by weight of a conductivity black,  
       wherein 
 the conductivity black is defined by the following parameters: 
 a) DBP absorption of from 100 to 300 ml/100 g;  
 b) a specific surface area of from 30 to 180 m 2 /g;  
 c) an ash content of less than 0.1% by weight and  
 d) a grit content of not more than 25 ppm.  
 
 
     
     
         2 . A product made from plastic, as claimed in  claim 1 ,  
       wherein 
 the molding composition comprising polyamide comprises from 10 to 25% by weight of the conductivity black.  
 
     
     
         3 . A product made from plastic, as claimed in  claim 1 ,  
       wherein 
 the molding composition comprising polyamide comprises from 16 to 20% by weight of the conductivity black.  
 
     
     
         4 . A product made from plastic, as claimed in any of the preceding claims,  
       wherein 
 the molding composition comprising polyamide also comprises from 0.1 to 20% by weight of carbon fibers.  
 
     
     
         5 . A product made from plastic, as claimed in any of the preceding claims,  
       wherein 
 the product has a one-layer structure.  
 
     
     
         6 . A product made from plastic, as claimed in any of  claims 1  to  4 ,  
       wherein 
 the product is composed of at least two layers, where at least one layer is composed of the molding composition as claimed in  claim 1  and the other layers are composed of other molding compositions which have not been rendered antistatic.  
 
     
     
         7 . A product made from plastic, as claimed in any of the preceding claims,  
       wherein 
 the product has been shaped in such a way that a gaseous, liquid or disperse medium can be passed through the same or stored in the same.  
 
     
     
         8 . A product made from plastic, as claimed in  claim 7 ,  
       wherein 
 the article is a component of a system transporting solvents or motor fuels.  
 
     
     
         9 . A molding composition which comprises polyamide and comprises from 3 to 30% by weight of a conductivity black,  
       wherein 
 the conductivity black is defined by the following parameters: 
 a) DBP absorption of from 100 to 300 ml/100 g;  
 b) a specific surface area of from 30 to 180 m 2 /g;  
 c) an ash content of less than 0.1% by weight and  
 d) a grit content of not more than 25 ppm.  
 
 
     
     
         10 . A molding composition as claimed in  claim 9 , which comprises from 10 to 25% by weight of the conductivity black.  
     
     
         11 . A molding composition as claimed in  claim 9 , which comprises from 16 to 20% by weight of the conductivity black.  
     
     
         12 . A molding composition as claimed in any of  claims 9  to  11 ,  
       wherein 
 the composition also comprises from 0.1 to 20% by weight of carbon fibers.  
 
     
     
         13 . A molding composition which comprises polyamide, as claimed in any of  claims 9  to  12 ,  
       wherein 
 the polyamide is a nylon-4,6, -6,6, -6,12, -8,10, -10,10, -6, -10,12, -11, -12 or -12,12.