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US 2003/0118722 A1Published application
Preparation of fluorinated core-shell particles with water and oil repellency
AssigneeKorea Research Institute of Chemical Technology
InventorsSoo-Bok Lee, In Jun Park, Dong-Kwon Kim, Jeong-Hoon Kim, Kwang Won Lee, Jong-Wook Ha
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Abstract
The present invention relates to preparation of fluorinated core-shell particles with water and oil repellency, and more particularly, to preparation of emulsion-type coating material with good water and oil repellency using only small amount of expensive fluorinated monomers, which comprise a shell wherein a large amount of hydrophobic fluorinated monomers are included and a core wherein no fluorinated monomers are included.
Claims6
A method of preparing fluorinated coating material with core-shell structure comprising steps of:
- 1) synthesizing core latex by emulsion polymerization by using a monomer selected from a group consisting of an acrylate-based monomer, a methacrylate-based, a styrene-based and a vinyl-based monomer;
- a surfactant;
- distilled water, a chain transfer agent and a water-soluble initiator;
- and
- 2) synthesizing a core-shell particle by adding fluorinated monomer alone or a mixture of a fluorinated monomer and a comonomer to the shell when the convertion ratio of the monomer into a polymer in the above step 1) reaches 70-95%.
2 more elements
Dependencies are inferred from the claim text.