Detergent composition and detergent for liquid crystal cell

Abstract

A water dispersion (0.5 wt % concentration) which is prepared by adding ion-exchanged water to a mixture of a component (a), polyoxyethylene monostyryl phenyl ether (added amount of ethylene oxide: 5 mol), and a component (b), polyoxyethylene isodecyl ether (added amount of ethylene oxide: 6 mol) (the component (a): the component (b)=1:2 (weight ratio)), is a low-corrosive, low-cost and highly safe detergent for liquid crystal cells, which has an excellent ability to clean and remove remaining liquid crystal attached to electrode portions of liquid crystal cells.

1 . A detergent composition containing: 
 (a) 20 wt % to 60 wt % of polyoxyalkylene styryl phenyl ether; and    (b) 40 wt % to 80 wt % of polyoxyalkylene alkyl ether (where the sum of (a) and (b) is 100 wt %).    
     
     
         2 . The detergent composition according to  claim 1 , wherein polyoxyalkylene styryl phenyl ether of (a) is a polyalkylene oxide adduct of styrenated phenol.  
     
     
         3 . The detergent composition according to  claim 1 , wherein polyoxyalkylene styryl phenyl ether of (a) is an addition polymer of styrenated phenol and alkylene oxide of 2 to 4 carbon atoms.  
     
     
         4 . The detergent composition according to  claim 3 , wherein purity of monostyrenated phenol in the styrenated phenol is not less than 85%.  
     
     
         5 . The detergent composition according to  claim 1 , wherein polyoxyalkylene styryl phenyl ether of (a) is an addition polymer of 1 mol of styrenated phenol and 4 to 5 mol of alkylene oxide having 2 to 4 carbon atoms.  
     
     
         6 . The detergent composition according to  claim 1 , wherein polyoxyalkylene styryl phenyl ether of (a) is an addition polymer of 1 mol of monostyrenated phenol and 5 mol of ethylene oxide.  
     
     
         7 . The detergent composition according to  claim 1 , wherein polyoxyalkylene alkyl ether of (b) has a straight or branched chain alkyl group of 4 to 18 carbon atoms.  
     
     
         8 . The detergent composition according to  claim 1 , wherein, in polyoxyalkylene alkyl ether of (b), the number of added moles of alkylene oxide having 2 to 4 carbon atoms is 1 to 10.  
     
     
         9 . The detergent composition according to  claim 1 , wherein polyoxyalkylene alkyl ether of (b) has an isodecyl group.  
     
     
         10 . The detergent composition according to  claim 1 , wherein, in polyoxyalkylene alkyl ether of (b), the number of added moles of alkylene oxide having any of 2 and 3 carbon atoms is 6.  
     
     
         11 . The detergent composition according to  claim 1 , wherein polyoxyalkylene styryl phenyl ether of (a) is 30 wt % to 50 wt % and polyoxyalkylene alkyl ether of (b) is 50 wt % to 70 wt %.  
     
     
         12 . A detergent for liquid crystal cells containing: 
 a mixture of (a) 20 wt % to 60 wt % of polyoxyalkylene styryl phenyl ether and (b) 40 wt % to 80 wt % of polyoxyalkylene alkyl ether (where the sum of (a) and (b) is 100 wt %); and    (c) 100 g to 1000 g of water for 1 g of the mixture.    
     
     
         13 . The detergent for liquid crystal cells according to  claim 12 , wherein the water of (c) is ion-exchanged water.