Coating composition and use thereof

Abstract

An alternating current type plasma display with front and back facing substrates with a gas discharge space between the substrates and a dielectric layer-covered electrode pair on at least one substrate, the dielectric layer having thereon a protective layer formed by coating the dielectric layer with a coating liquid substantially including a partial hydrolyzate derived from an alkaline earth metal compound having a hydrolysable reaction site and heating the coating.

1 . A process for producing an alternating current type plasma display comprising: a back substrate and a front substrate provided to face each other with a gas discharge space sandwiched between the back and front substrates; a pair of electrodes, covered with a dielectric layer, provided on one or both of the substrates; and a protective layer provided on the dielectric layer, 
 the process comprising the steps of: 
 coating a coating liquid on the dielectric layer provided on provided on one or both of the substrates, the coating liquid substantially containing a partial hydrolyzate derived from an alkaline earth metal compound having a hydrolysable reaction site; and  
 heating the coating to form a protective layer of an alkaline earth metal oxide film,  
   wherein said partial hydrolyzate is derived from the alkaline earth metal compound represented by one of the following structural formula (I) or (II)                          wherein M represents an alkaline earth metal atom, A represents a hetero atom, n1 an n2 are integers of 1 or more, and n3 is a valence of the hetero atom;                          wherein M represents an alkaline earth metal atom and n is an integer of 1 or more.    
   
   
       2 . The process according to  claim 1 , wherein the coating liquid further comprises an additive which can function to dissolve or disperse the alkaline earth metal compound in a solvent and to permit the hydrolysis of the alkaline earth metal compound to proceed in a rate-controlling manner, water in not more than a stoichiometric amount relative to the hydrolyzable reaction site, and an organic solvent.  
   
   
       3 . The process according to  claim 1 , wherein the alkaline earth metal compound having a hydrolyzable reaction site is at least one member selected from an organic compound of magnesium and an inorganic compound of magnesium.  
   
   
       4 . The process according to  claim 3 , wherein the organic compound of magnesium is magnesium alkoxide.  
   
   
       5 . The process according to  claim 1 , wherein the alkaline earth metal oxide film is formed of magnesium oxide particles having a diameter of not more than 0.3 μm.  
   
   
       6 . The process according to  claim 2 , wherein the additive is at least one member selected from a carboxylic acid, a carboxylic acid derivative, an alkanolamine compound, a glycol compound, a glycol derivative, and an organic compound having a carbon-carbon triple bond.