Polyacetal-containing brush

Abstract

The object is to provide a brush which does not easily damage metal during contact therewith. The present invention can provide a brush formed using polyacetal-containing filaments, in which the flexural rigidity per filament is 1 to 100 μg·m 2 /yarn.

1 . A brush comprising polyacetal-containing filaments, wherein the flexural rigidity per filament is 1 to 100 μg·m 2 /yarn. 
     
     
         2 . The brush according to  claim 1 , wherein the flexural rigidity per filament is 2 to 50 μg·m 2 /yarn. 
     
     
         3 . The brush according to  claim 1 , wherein the polyacetal contains 0.2 to 15 mol % of oxyalkylene repeat unit having a carbon number of 2 or greater and 6 or less, which is represented by the following formula (1): 
       
         
           
           
               
               
           
         
         (in the formula, R 0  and R 0 ′ each represent a hydrogen atom, an alkyl group, an organic group having an alkyl group, a phenyl group or an organic group having a phenyl group; and m represents an integer of 2 to 6). 
       
     
     
         4 . The brush according to  claim 1 , wherein the polyacetal contains at least one selected from polyethylene wax, silicone oil and polyethylene resin.