Aqueous dispersion of fluorocopolymer
AssigneeAsahi Glass Company, Limited
InventorsToru Ishida, Naomi Ichikuni
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Abstract
An aqueous dispersion of a fluorocopolymer, which is excellent in stability and film-forming properties as an aqueous dispersion, and which gives a coating film excellent in mechanical strength and improved in transparency, water resistance and stain resistance. A stable aqueous dispersion of a fluorocopolymer obtained in such a manner that a fluorocopolymer comprising polymerized units based on a vinyl monomer having a reactive group as the base is subjected to a composite treatment or a mixing treatment with a (meth)acrylate containing a reactive group capable of forming a bond by reaction with the above reactive group or the like.
Claims10
An aqueous dispersion of a fluorocopolymer, which is obtained by emulsion polymerization, in the presence of 100 parts by mass of particles of a fluorocopolymer (A), comprising repeating units based on a fluoroolefin (a), propylene (b), ethylene (c), a vinyl monomer (e) having a reactive group, and optionally butylene (d),
- of 5 to 200 parts by mass of one or more radical polymerizable monomers, comprising a (meth)acrylate (h), having a reactive group capable of forming a bond by reaction with the reactive group of the above (e) and
- wherein the equivalent ratio of (e) to (h) is from 1:2 to 2:1.
An aqueous dispersion of a fluorocopolymer, which is obtained by mixing an aqueous dispersion of 100 parts by mass of a fluorocopolymer (A), comprising repeating units based on a fluoroolefin (a), propylene (b), ethylene (c), a vinyl monomer (e) having a reactive group, and optionally butylene (d),
- with an aqueous dispersion of 5 to 200 parts by mass of a copolymer (B), obtained by emulsion polymerization of one or more radical polymerizable monomers, comprising a (meth)acrylate (h), having a reactive group capable of forming a bond by reaction with the reactive group of the above (e), and
- wherein the equivalent ratio of (e) to (h) is from 1:2 to 2:1.
Dependencies are inferred from the claim text.