Decorative coating composition for solid substrates

Abstract

A coating composition comprising (a) 10 to 60 wt. % of one or more hydroxy-, carboxy- and/or amino-functionalized solid resins selected from the group of methacrylic resins, acrylic resins, polyester resins, polyurethane resins, epoxy modified resins with linear, branched or star structure, (b) 5 to 40 wt. % of one or more polyisocyanates, blocked or unblocked, (c) 5 to 70 wt. % of aluminum hydroxide, (d) 0 to 40 wt. % of a ground polymer material, (e) 0 to 35 wt. % of organic solvents, (f) 0.01 to 15 wt. % % of additives and pigments and (g) 0 to 30 wt. % reactive thinners.

What is claimed:  
     
         1 . A coating composition comprising 
 (a) 10 to 60 wt. % of one or more hydroxy-, carboxy- and/or amino-functionalized solid resins selected from the group consisting of methacrylic resins, acrylic resins, polyester resins, polyurethane resins, epoxy modified resins with linear, branched or star structure,    (b) 5 to 40 wt. % of at least one polyisocyanates selected from the group consisting of blocked polyisocyanates and unblocked polyisocyanates,    (c) 5 to 70 wt. % of aluminum hydroxide,    (d) 0 to 40 wt. % of a ground polymer material,    (e) 0 to 35 wt. % % of organic solvents,    (f) 0.01 to 15 wt. % of additives and pigments and    (g) 0 to 30 wt. % reactive thinners.    
     
     
         2 . The composition according to  claim 1  wherein one or more resins selected from the group consisting of acrylic resins, methacrylic resins, polyester resins and resins with star structure are used as component (a).  
     
     
         3 . The composition according to  claim 1  wherein component (b) is selected from the group consisting of isocyanurates, biurets, uretdions and allofanates of 1,6-hexane diisocyanate.  
     
     
         4 . The composition according to  claim 1  wherein component (c) comprises 10 to 60 wt. % of the coating composition.  
     
     
         5 . The composition according to  claim 1  wherein component d) comprises 2-30 wt. % polymethyl methacrylate containing filler.  
     
     
         6 . The composition according to  claim 5  wherein component d) consists of about 40 wt. % polymethyl methacrylate, and 60 wt. % of aluminum hydroxide, colorants, and other additives at low levels.  
     
     
         7 . The composition according to  claim 1  wherein the amount of the organic solvents is from 10 to 35 wt. %.  
     
     
         8 . A process for coating a substrate which comprises applying a one-coat layer on a substrate using a coating composition according to  claim 1  and curing said coating.  
     
     
         9 . A process for forming a multi-layer coating which comprises applying several coating layers to a substrate being applied from the coating composition according to  claim 1  and curing said coating layers.  
     
     
         10 . A process for forming a coating layer as one-coating layer of a multi-layer coating which comprises applying to a substrate a coating layer selected from the group consisting of externally pigmented top coat layer and transparent clear coat layer said coating layer being applied from the coating composition according to  claim 1  and curing said coating layer.  
     
     
         11 . A coated substrate using the coating composition according to  claim 1.