Pro gel cap style multifunctional composition

Abstract

A method for creating a multi-functional additive for fusion powder coating compositions that is made from a binder system platform so as to replace the need for multiple conventional additives. The method calls for the multi-functional additive to be provided to fusion powder coating compositions by way of a carrier system selected from (3-aminopropyl) trimethoxysilane (TMS), silicon dioxide (at 45 to 55% active levels), and a flow aid comprising a polyethylene resin, a polyester hydroxyl resin, a polymeric curative, degassing agent, ricinoleic acid, and glass flake.

1 . A method of preparing a multifunctional additive for fusion powder coating compositions, the method comprising:
 selecting a binder system platform to impart a final powder coating formulation with at least two of the following functions: flow modifier, flexibility agent, wetting agent, curing agent, gloss control, mar/scratch resistance, impact resistance, and/or rheology modifier;   extruding the binder system platform to form an extrudate; and   grinding the extrudate to a predetermined particle size range to produce an additive powder; and   mixing the additive powder with a silica carrier to form a multifunctional additive, wherein the silica carrier is at least one selected from (3-aminopropyl) trimethoxysilane (TMS), silicon dioxide, and a flow aid, said flow aid comprising a polyethylene resin, a polyester hydroxyl resin, a polymeric curative, degassing agent, ricinoleic acid, and glass flake.   
     
     
         2 . The method of  claim 1  wherein the predetermined particle size range is between 100 nanometers and 5 micrometers for all particles of extrudate. 
     
     
         3 . The method of  claim 1  wherein a weight ratio of the carrier to additive powder is between 5:95 and 55:45. 
     
     
         4 . The method of  claim 3  wherein the weight ratio is between 20:80 and 25:75. 
     
     
         5 . The method of  claim 3  wherein the binder system platform includes at least one polyester resin. 
     
     
         6 . The method of  claim 3  wherein the weight ratio is greater than 25:75. 
     
     
         7 . The method of  claim 1  wherein the binder system platform includes at least one polyester resin. 
     
     
         8 . A method of making a fusion powder coating composition comprising:
 selecting a finished coating formulation having at least one thermosetting resin selected from the group consisting of epoxy resin, epoxy-polyester resin, acrylic resin, hydroxyl polyester resin, TGIC polyester, TGIC-free polyester resin, and any combination of two or more thereof; and   providing an additive made according to the method of  claim 1  to form a fusion powder coating composition, wherein the fusion powder coating composition consists of between 0.06 to 1.5 wt. % of the additive.   
     
     
         9 . The method of  claim 8  wherein no other additives, excepting the thermosetting resin(s) and appropriate curatives therefore, are provided to the powder coating composition.