POLY FLUORINE-CONTAINING SILOXANE COATINGS

摘要

Poly fluorine-containing siloxane coatings having improved hydrophobic and oleophobic properties and solutions for creating such coatings are provided. In some embodiments, the coating includes a polymer having a plurality of Si—O—Si linkages; and at least two fluorine-containing moieties, each attached to at least one of the Si—O—Si linkages. Each fluorine-containing moiety independently includes a linking portion attached to a silicon of one of the Si—O—Si linkages, wherein the linking portion is of a formula selected from the group consisting of: —[CH2]a— where a is an integer from 1 to 10 and —[CH2]bCONH[CH2]c— where b and c are independently an integer from 0 to 10. Each fluorine-containing moiety also independently includes a fluorinated portion attached to the linking portion, wherein the fluorinated portion is selected from a fluorinated-alkyl group having 1-10 carbon atoms and a perfluoro-ether containing organic group.

主权项

1. A composition for forming a poly fluorine-containing siloxane coating comprising:
a polymer of Formula (I); wherein:
R is a hydrogen atom, an alkyl or aryl group having 1 to 1) carbon atoms, a fluorine-substituted alkyl or aryl group having 1 to 10 carbon atoms:Rf is a linear or branched perfluoro-alkyl group represented by the formula F—(CgF2g)—, where g is an integer from 1 to 10;W1, W2 are each independently a perfluoroether-containing organic group;Q1, Q2, Q3, Q4 are each independently an organic linking group linking a Si element to a fluorinated group; and a, b, c, d, a are each independently an integer from 0 to 1000, the sum of the integers a, b, and c being greater than or equal to 2; at least one organic solvent; and optionally at least one additive.