Hydrophobic and Lyophobic Coating
OwnerHua Zhang, Robert Norman Lambinventors
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Abstract
The invention provides a method for forming a hydrophobic coating on the surface of a solid substrate, the method comprising: a) applying to the surface a composition comprising hydrophobic nano-sized particles, wherein at least some of the hydrophobic nano-sized particles are particles having at least one fluoro-substituted non-polar group on the surface of the particle; and b) curing the applied composition to form a coating bound to the surface, wherein the nano-sized particles provide the surface of the coating with nano-scale roughness. The method can be used to form a hydrophobic and lyophobic coating on the surface of a textile.
Claims31
1-18. (canceled)
A method for forming a hydrophobic coating on the surface of a solid substrate, the method comprising:
- a) applying to the surface a composition comprising hydrophobic nano-sized particles, wherein at least some of the hydrophobic nano-sized particles are particles having at least one fluoro-substituted non-polar group on the surface of the particle;
- and
- b) curing the applied composition to form a coating bound to the surface, wherein the nano-sized particles provide the surface of the coating with nano-scale roughness.
A coating composition comprising hydrophobic nano-sized particles and an organic solvent, wherein the hydrophobic nano-sized particles are hydrophobic nano-sized particles formed by the hydrolysis and condensation of one or more compounds of formula (1):
- R2M(OR)3 (1)
- wherein
- R2 is a non-polar group that is not fluoro-substituted,
- M is a metal, and
- each R is independently selected and is an alkyl group;
- with one or more compounds of formula (2):
- R3M(OR)3 (2)
- wherein:
- R3 is a fluoro-substituted non-polar group,
- M is a metal, and
- each R is independently selected and is an alkyl group.
A coating composition comprising hydrophobic nano-sized particles and an organic solvent, wherein the hydrophobic nano-sized particles are hydrophobic nano-sized particles formed by the hydrolysis and condensation of one or more compounds of the formula (1):
- R2M(OR)3 (1)
- wherein
- R2 is a non-polar group that is not fluoro-substituted,
- M is a metal, and
- each R is independently selected and is an alkyl group;
- with one or more compounds of formula (2):
- R3M(OR)3 (2)
- wherein:
- R3 is a fluoro-substituted non-polar group,
- M is a metal, and
- each R is independently selected and is an alkyl group,
- together with one or more additional compounds selected from the group consisting of compounds of formula (B) and compounds of formula (C):
- M(OR)n (B)
- wherein:
- M is a metal,
- each R is independently selected and is an alkyl group, and
- n is 3 or 4;
- R1M(OR)m (C)
- wherein:
- R1 is a non-polar group,
- M is a metal,
- each R is independently selected and is an alkyl group, and
- m is 1 or 2.
Dependencies are inferred from the claim text.