Lubricant system for reducing frictional noise

Abstract

A lubricant system for reducing frictional noise includes: a textile fabric at least partially embedded in a lubricant, the lubricant including a comb polymer having a main polymer chain and a plurality of side chains covalently bonded to the main polymer chain. At least one of the side chains has a molecular weight of at least 60 g/mol and/or at least 5 repeat units.

What is claimed is: 
     
         1 . A lubricant system for reducing frictional noise, comprising:
 a textile fabric at least partially embedded in a lubricant, the lubricant comprising a comb polymer having a main polymer chain and a plurality of side chains covalently bonded to the main polymer chain,   wherein at least one of the side chains has a molecular weight of at least 60 g/mol and/or at least 5 repeat units.   
     
     
         2 . The lubricant system according to  claim 1 , wherein the textile fabric is physically enclosed by the comb polymer. 
     
     
         3 . The lubricant system according to  claim 1 , wherein the comb polymer is at least partially chemically bonded to the textile fabric. 
     
     
         4 . The lubricant system according to  claim 1 , wherein the lubricant is present as a solid at 20° C. 
     
     
         5 . The lubricant system according to  claim 1 , wherein at least 10% of the repeat units of the main chain comprise at least one of the side chains. 
     
     
         6 . The lubricant system according to  claim 1 , wherein the main polymer chain has a molecular weight of at least 580 g/mol, and/or at least 8 repeat units. 
     
     
         7 . The lubricant system according to  claim 1 , wherein the side chain has a molecular weight of at least 220 g/mol, and/or at least 5 repeat units. 
     
     
         8 . The lubricant system according to  claim 1 , wherein the side chain of the comb polymer comprises a base oil. 
     
     
         9 . The lubricant system according to  claim 1 , wherein the comb polymer is obtained by polymerizing macromonomer having polymerizable functionalities, the macromonomer having at least partially more than one polymerizable functionality. 
     
     
         10 . The lubricant system according to  claim 9 , wherein the polymerizable functionalities are selected from the group consisting of acrylamide, acrylate, methacrylate, and/or vinyl ether functionalities. 
     
     
         11 . The lubricant system according to  claim 1 , wherein the comb polymer is present in crosslinked form. 
     
     
         12 . The lubricant system according to  claim 1 , wherein the textile fabric comprises a wet nonwoven. 
     
     
         13 . The lubricant system according to  claim 1 , wherein the lubricant system has a thickness of from 60 μm to 300 μm and/or a weight of 50 g/m 2  to 300 g/m 2 . 
     
     
         14 . The lubricant system according to  claim 1 , wherein the textile fabric contains polyolefin fibers and/or polyester fibers in a proportion of 50 wt. % to 100 wt. %, based in each case on a total weight of the textile fabric. 
     
     
         15 . The lubricant system according to  claim 1 , wherein a proportion of comb polymer in the lubricant is 30 wt. % to 100 wt. %. 
     
     
         16 . A method for producing the lubricant system according to  claim 1 , comprising a textile fabric at least partially embedded in a lubricant, comprising the following method steps:
 providing a textile fabric;   impregnating and/or coating the textile fabric with a macromonomer-containing coating composition, the macromonomer having a molecular weight of at least 140 g/mol; and   polymerizing the macromonomer to form a comb polymer having a main polymer chain and a plurality of side chains covalently bonded to the main polymer chain, at least one of the side chains having a molecular weight of at least 60 g/mol, with a lubricant being formed in which the textile fabric is embedded, forming the lubricant system.   
     
     
         17 . A method of using the lubricant system according to  claim 1 , comprising:
 using the lubricant system to reduce frictional noise from components exposed to frictional loads in a car interior.   
     
     
         18 . The lubricant system according to  claim 3 , wherein chemically bonded comprises ionically and/or covalently bonded. 
     
     
         19 . The lubricant system according to  claim 5 , wherein 80% to 100% of the repeat units of the main chain comprise at least one of the side chains. 
     
     
         20 . The lubricant system according to  claim 6 , wherein the main polymer chain has a molecular weight of 580 g/mol to 50,000 g/mol, and/or 8 to 2000 repeat units.