发明授权
US5914384A Coating compositions containing a highly fluorinated hydroxyl containing additive 失效
含有高度含氟羟基的添加剂的涂料组合物

Coating compositions containing a highly fluorinated hydroxyl containing
additive
摘要:
A coating composition that forms a finish that is soil resistant and easily cleaned having a binder of(A) an acrylic polymer of polymerized hydroxyl containing monomers of hydroxy alkyl (meth)acrylates having 1-4 carbon atoms in the alkyl groups and polymerized monomers from the group of alkyl (meth)acrylates having 1-18 carbon atoms in the alkyl groups, styrene or any mixtures of the above and the acrylic polymer has a weight average molecular weight of about 2,000-20,000 determined by gel permeation chromatography,(B) an acrylic polymeric additive of polymerized hydroxyl containing monomers of hydroxy alkyl (meth)acrylates having 1-4 carbon atoms in the alkyl groups, polymerized monomers from the group of alkyl (meth)acrylates having 1-18 carbon atoms in the alkyl groups, styrene or any mixtures of the above and polymerized fluoro alkyl containing monomer represented by the formula ##STR1## where R is selected from the group of hydrogen or an alkyl group having 1-2 carbon atoms, X is a divalent radical and R.sub.f is a fluoro alkyl containing group having 4-20 carbon atoms and the additive has a weight average molecular weight of about 1,000-15,000 determined by gel permeation chromatography, and(C) an organic crosslinking agent; and where a cured layer of the coating of the composition has a combination of advancing water contact angle of at least 100.degree. and a hexadecane advancing contact angle of at least 40.degree.. Articles coated with the composition also are part of this invention.
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