Thermoplastic elastomer composition of an elastomer and a non-elastomeric polyolefin which is functionalized with an anhydride of an organic carboxylic acid

Abstract

A thermoplastic elastomer composition is disclosed that includes an elastomer and a non-elastomeric polyolefin, which is functionalized with an anhydride of an organic carboxylic acid. Furthermore, the use of a mixture of an elastomer and a cross-linking agent for the elastomer for producing a thermoplastic elastomer composition are disclose. A further subject of the invention is the use of a non-elastomeric polyolefin which is functionalized with an anhydride of an organic carboxylic acid for producing a thermoplastic elastomer composition according to the invention. In addition, the invention relates to the use of a thermoplastic elastomer composition according to the invention for producing an article/composite material with a polyamide. The invention also relates to a process for producing a thermoplastic elastomer composition according to the invention as well as a composite material made of the thermoplastic elastomer composition according to the invention with a polyamide.

1 . A thermoplastic elastomer composition comprising:
 an elastomer; and   a thermoplast,   wherein the thermoplast is a non-elastomeric polyolefin which is functionalized with an anhydride of an organic carboxylic acid,   wherein the elastomer is selected from the group consisting of nitrile butadiene rubber, hydrogenated nitrile butadiene rubber, butyl rubber, natural rubber, isoprene rubber, acrylate rubber, ethylene acrylate rubber, silicone rubber, styrene butadiene rubber, chloroprene rubber, bromobutyl rubber, epichlorohydrin rubber, and epoxidized natural rubber, or a mixture thereof,   wherein the elastomer is cross-linked, and   wherein a weight ratio of elastomer to thermoplast lies in a range of from 100:20 to 100:50.   
     
     
         2 . The thermoplastic elastomer composition according to  claim 1 , wherein the elastomer is nitrile butadiene rubber. 
     
     
         3 . The thermoplastic elastomer composition according to  claim 1 , wherein the organic carboxylic acid is the organic dicarboxylic acid. 
     
     
         4 . A thermoplastic elastomer composition according to  claim 1  for producing a composite material with a polyamide. 
     
     
         5 . A thermoplastic elastomer composition according to  claim 1  for producing components or shaped bodies in automobile interiors or in the engine space of vehicles, for producing industrial devices, industrial tools, bathroom fittings, domestic appliances, consumer electronics devices, sporting goods, medical consumables and devices, containers for sanitary products and cosmetics, and sealing materials. 
     
     
         6 . A process for producing a thermoplastic elastomer composition according to  claim 1 , the process comprising:
 mixing the elastomer with the thermoplast.   
     
     
         7 . The process according to  claim 6 , wherein the elastomer is mixed with the thermoplast in an extruder, an internal mixer, or a kneader. 
     
     
         8 . The process according to  claim 6 , further comprising:
 masticating the elastomer in a first step together with a cross-linking agent before the elastomer is mixed with the thermoplast.   
     
     
         9 . The process according to  claim 6 , wherein the first step is carried out in a temperature range of from 50° C. to 120° C. 
     
     
         10 . The process according to  claim 7 , wherein the elastomer is mixed with the thermoplast in a twin-screw extruder.