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.
Claims8
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 polymerized units based on (a) a fluoroolefin, polymerized units based on (b) propylene, polymerized units based on (c) ethylene and/or polymerized units based on (d) butylene, and polymerized units based on (e) a vinyl monomer having a reactive group, of from 5 to 200 parts by mass of a radical polymerizable monomer mixture comprising (g) (meth)acrylic acid capable of forming a bond by reaction with the reactive group of the above (e) and/or (h) an alkyl (meth)acrylate having a carbon number of from 1 to 18 in the alkyl group, and having a reactive group capable of forming a bond by reaction with the reactive group of the above (e).
An aqueous dispersion of a fluorocopolymer, which is obtained by mixing an aqueous dispersion of 100 parts by mass of a fluorocopolymer (A) comprising polymerized units based on (a) a fluoroolefin, polymerized units based on (b) propylene, polymerized units based on (c) ethylene and/or polymerized units based on (d) butylene, and polymerized units based on (e) a vinyl monomer having a reactive group, with an aqueous dispersion of from 5 to 200 parts by mass of a copolymer (B) obtained by emulsion polymerization of a radical polymerizable monomer mixture comprising (g) (meth)acrylic acid capable of forming a bond by reaction with the reactive group of the above (e) and/or (h) an alkyl (meth)acrylate having a carbon number of from 1 to 18 in the alkyl group, and having a reactive group capable of forming a bond by reaction with the reactive group of the above (e).
Dependencies are inferred from the claim text.