FLUOROPOLYMER NON-STICK COATINGS WITH IMPROVED SLOUGHING AND BLISTERING RESISTANCE

摘要

A COATING COMPOSITION IS PROVIDED COMPRISING (A) AN AQUEOUS MEDIUM, (B) MELT-FABRICABLE PERFLUOROPOLYMER DISPERSED IN SAID AQUEOUS MEDIUM AND HAVING A MELTING TEMPERATURE OF AT LEAST 290°C, (C) MELT-FABRICABLE PERFLUOROPOLYMER DISPERSED IN SAID AQUEOUS MEDIUM AND HAVING A MELTING TEMPERATURE OF NO GREATER THAN 270°C, AND (D) WATER MISCIBLE ORGANIC LIQUID HAVING A BOILING TEMPERATURE OF AT LEAST 280°C AND OPTIONALLY (E) FILLER, THE COMBINATION OF (C) AND (D) PROVIDING SLOUGHING RESISTANCE TO SAID COMPOSITION APPLIED TO A NON-HORIZONTAL SUBSTRATE AND BAKED, COMPONENT (D) BEING UNNECESSARY WHEN COMPONENT (A) IS NOT PRESENT IN THE COATING COMPOSITION, AND WHEN FILLER IS PRESENT THE AMOUNT OF (C) BEING PRESENT IN AN EFFECTIVE AMOUNT TO INCREASE THE COHESIVE STRENGTH OF THE BAKED LAYER OF THE COATING COMPOSITION.