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US 9,790,640 B2Granted
Composition and process for applying hydrophobic coating to fibrous substrates
OwnerGary S Selwyninventor
Life of this patent
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Abstract
Fabrics are treated with a hydrophobic treatment that includes at least one hydrophobic monomer and a crosslinker. The treatment is low in volatile organic compounds and water. It is a liquid at 22° C. or a suspension having a phase that is liquid at 22° C. The monomer and crosslinker are cured in a free radical polymerization to form a hydrophobic coating on a fibrous substrate.
Claims12
A curable coating composition comprising:
- a-1) at least one monomer having exactly one free-radical polymerizable group per molecule and being a liquid at 22° C., the at least one monomer having at least one hydrocarbyl group that has at least eight carbon atoms bonded directly or indirectly to the polymerizable group, wherein the hydrocarbyl group may be nonfluorinated, partially fluorinated or perfluorinated, the at least one monomer having a boiling temperature equal to or greater than 100° C.,
- a-2) at least one monomer having exactly one free-radical polymerizable group per molecule and being a solid at 22° C., the at least one monomer having at least one hydrocarbyl group that has at least eight carbon atoms bonded directly or indirectly to the polymerizable group, wherein the hydrocarbyl group may be nonfluorinated, partially fluorinated or perfluorinated, the at least one monomer having a boiling temperature equal to or greater than 100° C.,
- b) at least one monomer having at least two free-radical polymerizable groups and a boiling temperature equal to or greater than 100° C.;
- and
- 2 to 98 weight percent, based on the weight of the curable coating composition, of at least one linear, branched or cyclic polysiloxane;
- wherein the coating composition is a liquid at 22° C. or a suspension of one or more solids in a liquid phase at 22° C.
3 more elements
A curable coating composition comprising
- a) a mixture of at least one monomer having exactly one free-radical polymerizable acrylate or methacrylate group per molecule and which is a liquid at 22° C. and at least one monomer having exactly one free-radical polymerizable acrylate or methacrylate group per molecule and which is a solid at 22° C., wherein component a) has a solubility in water of no greater than 1 part by weight per 100 parts by weight of water at 30° C., and water is soluble in component a) to the extent of no greater than 1 part by weight per 100 parts by weight of component a) at 30° C., and
- b) at least one monomer having at least two free-radical polymerizable groups and a boiling temperature equal to or greater than 100° C.;
- wherein the coating composition is a liquid at 22° C. or a suspension of one or more solids in a liquid phase at 22° C., the coating composition contains no more than 10% by weight of organic compounds that have boiling temperatures below 100° C. and no more than 5% by weight water, based on the entire weight of the coating composition.
Dependencies are inferred from the claim text.