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US 10,597,551 B2Granted
Coating compositions
AssigneeSolvay Specialty Polymers Italy S.P.A.
InventorsSerena Carella, Fabio Polastri, Amelia Mennella, Giorgio Maggi
Life of this patent
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Abstract
The present invention relates to an aqueous composition comprising at least one partially fluorinated copolymer in the form of particle powder, to a method for its preparation and to its use as a coating.
Claims17
A composition comprising an aqueous solvent and a solid portion, wherein:
- a) from 15 to 30% in weight/total weight of the solid portion consists of a first powder of at least one copolymer (F) in the form of particles having average size (D50) from 3 to 6 micrometers, wherein copolymer (F) is a partially fluorinated copolymer;
- b) from 70 to 85% in weight/total weight of the solid portion consists of a second powder of at least one copolymer (F′) in the form of particles having average size (D50) from 20 to 90 micrometers, wherein copolymer (F′) is a partially fluorinated copolymer which is the same as or different from copolymer (F);
- wherein the average particle size is measured according to test method ASTM D1921.
Dependencies are inferred from the claim text.