Abstract:
Method of forming a very hydrophobic, extremely hydrophobic or superhydrophobic surface comprising depositing a composition comprising hydrophobic microparticles, hydrophobic nanoparticles, or a mixture thereof and a binder in sufficient quantity to provide a hydrophobic or a superhydrophobic surface on a substrate having a micropatterned surface having raised portions, recessed portions or a combination thereof.
Abstract:
A fluoropolymer coating composition contains a homogeneous mixture of crystalline submicron fluoropolymer particles dispersed in a solvent-borne solution of less crystalline or amorphous fluororesin. The composition may be prepared by blending a latex containing crystalline submicron fluoropolymer particles with a latex containing less crystalline or amorphous fluororesin particles, coagulating and drying the blended latices, and dissolving the dried blend in a solvent for the fluororesin particles. Quasi-homogenous compositions may be prepared by blending dry crystalline submicron fluoropolymer particles with a) dry less crystalline or amorphous fluororesin particles and a solvent for the fluororesin particles, or b) a solvent-borne solution of less crystalline or amorphous fluororesin. Rubbing the disclosed coatings can provide a thin, continuous or nearly continuous fluoropolymer surface layer atop a less crystalline or amorphous fluororesin binder containing crystalline submicron fluoropolymer particles.
Abstract:
The invention features an article comprising a reactive substrate that forms a covalent or hydrogen bond with a surface layer. The surface layer of the article comprises the reaction product of at least one monoterminated (per)fluoropolyether (meth)acryl compound and at least one monomer or oligomer having at least two (meth)acryl groups.
Abstract:
The invention relates to display and protective articles having a fluorochemical surface layer, and methods of making such articles. The invention also relates to fluoropolyether acrylate compositions.
Abstract:
The present invention relates to an aqueous composition comprising an oligomeric fluorosilane and a surfactant. The invention further relates to a method of treatment of optical elements with the aqueous composition and to optical elements so treated. The invention further relates to articles including the treated optical elements.
Abstract:
A method of modifying a surface of a substrate comprises: inkjet printing a material, the material comprising a non-vaporizable component onto a surface of a substrate, wherein the non-vaporizable component comprises at least one compound having the formula (A); wherein R f is a perfluoroalkyl group having from 1 to 22 carbon atoms; Z is a divalent connecting group or a covalent bond; X is selected from the group consisting of -PO 3 H, -CO 2 H, and salts thereof; and wherein the compound comprises greater than 10 percent by weight of the non-vaporizable component. Various articles may be produced according to the method.
Abstract:
Disclosed are various fluoropolymer blend combinations and multilayer articles comprising a blend in a first layer and a second layer comprising a polymer bonded to the first layer. The invention also provides an article comprising a first layer comprising a blend of two or more fluoropolymers, and a second layer bonded to the first layer, the second layer comprising a partially-fluorinated thermoplastic polymer, a perfluorinated thermoplastic polymer, or a combination thereof. The invention also provides an article comprising a first layer comprising a blend of two or more fluoropolymers, at least one of which comprises a partially-fluorinated thermoplastic polymer, and optionally at least one perhalogenated polymer, and a second layer bonded to the first layer, the second layer comprising an at least partially-fluorinated thermoplastic polymer. The invention also provides processes for preparing blended fluoropolymers and multilayer articles comprising a fluoropolymer layer.
Abstract:
A method for making a fine electrically conductive grid embedded in a polymer substrate (30). The method includes the steps of providing a polymer substrate (30), forming a pattern of grooves (31) in the substrate (30), filling the grooves (31) with electrically conductive powder, and then applying heat and/or pressure to the substrate (30). The application of heat and/or pressure to the substrate (30) causes the grooves (31) to collapse inward against the conductive powder. Collapsing the grooves (31) compacts the conductive powder within the groove (31), thereby establishing a continuously conductive grid line or circuit. The narrow grid lines that result allow more light to transmit through the substrate (30). The method allows grid lines to be made with higher aspect ratios (ratio of line depth to line width) than is possible by previous methods.
Abstract:
A multi-layer structure includes a layer of a fluoropolymer bonded to a substrate. The structure is prepared by exposing a bonding composition to actinic radiation, such as ultraviolet radiation, to form the bond. The bonding composition includes a light-absorbing electron donor.
Abstract:
A multi-layer structure includes a fluoropolymer bonded to a substrate. The structure is prepared by heating a bonding composition to form the bond. The bonding composition includes an amino-substituted organosilane. The bonding composition includes non-adhesive materials.