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Assignee3M Innovative Properties Company
InventorsNaiyong Jing, Tatsuo Fukushi, Chuntao Cao, Lan Liu, Thomas Klun, William Coggio, Vivian Jones
Estimating the term…
A fluoropolymer coating composition contains a homogeneous mixture of crystalline submicron fluoropolymer particles dispersed in a solvent-borne solution of less crystalline or amorphous fluororesin. The composition may be prepared by blending a latex containing crystalline submicron fluoropolymer particles with a latex containing less crystalline or amorphous fluororesin particles, coagulating and drying the blended latices, and dissolving the dried blend in a solvent for the fluororesin particles. Quasi-homogenous compositions may be prepared by blending dry crystalline submicron fluoropolymer particles with a) dry less crystalline or amorphous fluororesin particles and a solvent for the fluororesin particles, or b) a solvent-borne solution of less crystalline or amorphous fluororesin. Rubbing the disclosed coatings can provide a thin, continuous or nearly continuous fluoropolymer surface layer atop a less crystalline or amorphous fluororesin binder containing crystalline submicron fluoropolymer particles.
A method for making a fluoropolymer coating composition, comprising blending a latex containing crystalline submicron fluoropolymer particles with a latex containing less crystalline or amorphous fluororesin particles, coagulating and drying the blended latices, and dissolving the dried blend in a solvent for the fluororesin particles.
A method for making a fluoropolymer coating composition, comprising blending dry crystalline submicron fluoropolymer particles with a) dry less crystalline or amorphous fluororesin particles and a solvent for the fluororesin particles, or b) a solvent-borne solution of less crystalline or amorphous fluororesin, thereby forming a coating composition containing a quasi-homogenous dispersion of the fluoropolymer particles in a solvent-borne solution of the fluororesin particles.
A fluoropolymer coating composition comprising a homogeneous storage-stable mixture of crystalline submicron fluoropolymer particles dispersed in a solvent-borne solution of less crystalline or amorphous fluororesin.
A fluoropolymer coating composition comprising a quasi-homogeneous mixture of crystalline submicron fluoropolymer particles dispersed in a solvent-borne solution of less crystalline or amorphous fluororesin.
An article comprising a hardened or cured thin, continuous or nearly continuous fluoropolymer layer, atop a less crystalline or amorphous fluororesin binder layer containing crystalline submicron fluoropolymer particles, atop a support.
Dependencies are inferred from the claim text.