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US 2013/0171361 A1Published application
Coating Composition Including High Molecular Weight Polycarbodiimide, Method Of Preparing Same, And Method Of Preparing Coating On A Substrate
AssigneeBASF SE
InventorMohamed BOUGUETTAYA
Life of this patent
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Abstract
A coating composition comprises a high molecular weight polycarbodiimide. The high molecular weight polycarbodiimide is produced via a method. A method of preparing the coating composition and a method of forming a coating on a substrate with the coating composition are also disclosed.
Claims21
A coating composition, comprising:
- a high molecular weight polycarbodiimide, which is formed from the steps of:
- providing an isocyanate component comprising toluene diisocyanate (TDI);
- providing a carbodiimidization catalyst;
- providing a first solvent having a boiling point temperature of from about 50 to about 150° C.;
- polymerizing the isocyanate component for a first period of time in the first solvent and in the presence of the carbodiimidization catalyst to produce a reaction mixture including at least one carbodiimide compound and the first solvent;
- combining a second solvent, which is the same as or different from the first solvent, and the reaction mixture;
- and
- polymerizing the at least one carbodiimide compound for a second period of time in the first and second solvents and in the presence of the carbodiimidization catalyst to produce said high molecular weight polycarbodiimide.
5 more elements
A method of preparing a coating composition, said method comprising the steps of:
- providing an isocyanate component comprising toluene diisocyanate (TDI);
- providing a carbodiimidization catalyst;
- providing a first solvent having a boiling point temperature of from about 50 to about 150° C.;
- polymerizing the isocyanate component for a first period of time in the first solvent and in the presence of the carbodiimidization catalyst to produce a reaction mixture including at least one carbodiimide compound and the first solvent;
- combining a second solvent, which is the same as or different from the first solvent, and the reaction mixture;
- and
- polymerizing the at least one carbodiimide compound for a second period of time in the first and second solvents and in the presence of the carbodiimidization catalyst to prepare the coating composition including a high molecular weight polycarbodiimide.
4 more elements
A method of forming a coating on a substrate, said method comprising the steps of:
- providing an isocyanate component comprising toluene diisocyanate (TDI);
- providing a carbodiimidization catalyst;
- providing a first solvent having a boiling point temperature of from about 50 to about 150° C.;
- polymerizing the isocyanate component for a first period of time in the first solvent and in the presence of the carbodiimidization catalyst to produce a reaction mixture including at least one carbodiimide compound and the first solvent;
- combining a second solvent, which is the same as or different from the first solvent, and the reaction mixture;
- polymerizing the at least one carbodiimide compound for a second period of time in the first and second solvents and in the presence of the carbodiimidization catalyst to produce a high molecular weight polycarbodiimide;
- and
- applying a coating composition comprising the high molecular weight polycarbodiimide on the substrate to form the coating.
5 more elements
Dependencies are inferred from the claim text.