Coating compositions for metal substrates based on ethylene-tetrafluoroethylene copolymers
AssigneeMontecatini Edison S.p.A.
InventorsAndrea Mattiussi, Mario Modena
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Abstract
Coating compositions for metal substrates comprising a mixture of ethylene-tetrafluoroethylene copolymers, said mixture including an ethylene-tetrafluoroethylene copolymer having 50-60 mol % of tetrafluoroethylene with a melting point from about 250.degree. C to about 315.degree. C and an ethylene-tetrafluoroethylene copolymer having more than 60 or less than 45 mol % of tetrafluoroethylene with a melting point from about 180.degree. C to about 285.degree. C and a latent solvent. The composition may optionally include a fluidizing solvent and various pigments, inert fillers and other additives.
Claims10
A coating composition comprising an ethylene-tetrafluoroethylene copolymer mixture and at least one latent solvent, said ethylene-tetrafluoroethylene copolymer mixture being constituted by
- a. 20-90% of at least one ethylene-tetrafluoroethylene copolymer having a melting point from about 250.degree. C. to about 315.degree. C. and containing between 52 and 58 mol % of chemically combined tetrafluoroethylene, and
- b. 80-10% of at least one ethylene-tetrafluoroethylene copolymer having a melting point from about 180.degree. C. to about 285.degree. C. and containing 68 mol % of chemically combined tetrafluoroethylene.
Dependencies are inferred from the claim text.