Abstract: Perfluoro lower alkanesulfonamide-derived silanes which in an organic solvent are useful in treating siliceous substrates are described. The compositions may optionally contain an additional non-fluorinated compound in a mixture or condensation product. Methods for preparing perfluoro lower alkanesulfonamide-derived silanes are also described.

Abstract: Fluorinated ether carboxylic acid or acid derivatives, aqueous compositions comprising fluorinated surfactants, processes for preparing fluoropolymer dispersions, and methods for preparing layered articles.

Abstract: A coating composition having (i) an aqueous dispersion of fluoropolymer particles comprising a non-melt processible polymer of tetrafluoroethylene, (ii) a fluorinated surfactant, (iii) a non-ionic non-fluorinated surfactant and (iv) a non-fluorinated polymer, wherein the fluorinated surfactant is selected from fluorinated carboxylic acids or salts thereof of the general formula (I): [Rf—O-L-COO?]iXi+ ??(I) wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xi+ represents a cation having the valence i and i is 1, 2 or 3.

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: A fluorochemical compound comprises the reaction product of: (a) the reaction product of: (i) at least one fluorochemical alcohol represented by the formula: CnF2n+1—X—OH wherein: n=1 to 6, R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, y=0 to 6, q=1 to 8; and (ii) at least one unbranched symmetric diisocyanate, and (b) at least one co-reactant comprising two or more functional groups that are capable of reacting with an isocyanate group.

Abstract: Methods for modifying the wettability of sandstone. Compositions comprising sandstone having a modified wettability. Such wettability modifications may be useful, for instance, in improving the well-deliverability of an oil and/or gas well located in a sandstone formation.

Abstract: In one aspect, the invention provides a water-based release coating composition comprising a mixture of (A.) from about 5 to about 100 wt % of a polymer comprising the reaction product of (a.) from 1 to about 15 wt % of a fluorinated monomer selected from the group consisting of monomers according to the general formula: RfX—OC(O)—C(R)?CH2, wherein Rf represents a perfluorinated aliphatic group having 3 or 4 carbon atoms, X is an organic divalent linking group, and R represents a hydrogen or methyl group, (b.) from about 40 to about 70 wt % of an alkyl (meth)acrylate, wherein the alkyl group contains from 16 to 22 carbon atoms, (c.) from about 3 to about 20 wt % of (meth)acrylic acid, (d.) from about 20 to about 40 wt % acrylonitrile, and (e.) from 0 to about 15 wt % of vinyl monomer, other than acrylonitrile, wherein the sum of (a.) through (e.) equals 100%; and (B.) from 0 to about 95 wt % of an extender polymer, wherein the sum of (A.) and (B.

Abstract: A fluorochemical ketone compound consists of two terminal, branched, independently fluoroalkylcarbonyl or perfluoroalkylcarbonyl groups and an intervening linear perfluoropolyether segment, each of the terminal groups optionally comprising at least one catenated heteroatom, and the perfluoropolyether segment consisting essentially of at least one tetrafluoroethyleneoxy moiety and, optionally, at least one difluoromethyleneoxy moiety, the moieties being randomly or non-randomly distributed within the perfluoropolyether segment.

Abstract: Fluoroacrylates comprise the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: CnF2n+1—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoro acrylate monomer having 2 to about 30 carbon atoms in its alkylene portion.

Abstract: Compounds having two reactive functional groups are described that can be used to provide a connector group between a substrate and an amine-containing material. The first reactive functional group can be used to provide attachment to a surface of a substrate. The second reactive functional group is a N-sulfonylaminocarbonyl group that can be reacted with an amine-containing material, particularly a primary aliphatic amine, to form a carbonylimino-containing connector group. The invention also provides articles and methods for immobilizing amine-containing materials to a substrate.

Abstract: A hard coating composition for use as a stain repellent single layer on an optical display. The coating composition adds a monomer of a mono or multi(methyl)acrylate bearing at least one monovalent hexafluoropolypropylene oxide derivative and a free radically reactive compatibilizer consisting of either a fluoroalkyl-group containing acrylate compatibilizer or a fluoroalkylene-group containing acrylate compatibilizer to a conventional hydrocarbon-based hard coat formulation. The resultant coating is substantially smooth and forms a durable surface layer that has low surface energy that is stain and ink repellent.

Abstract: A gemini surfactant represented by the formula: wherein: each Rf independently represents perfluorobutyl or perfluoropropyl; each R1 independently represents alkyl having from 1 to 6 carbon atoms; L1 and L2 represent alkylene having from 2 to 18 carbon atoms; each R represents alkyl having from 1 to 6 carbon atoms; Z represents an organic divalent linking group; and nXm? represents an anion or anions having a charge m, wherein m and n are independently 1 or 2, and wherein the product of n and m is 2. Aqueous compositions containing the gemini surfactant are also disclosed.

Abstract: Described are monomeric fluorosurfactants having two perfluoro-lower-alkyl sulfonamido segments which are more efficient and effective in lowering the surface tension of organic solvents and water compared to other C4-based fluorosurfactants.

Abstract: An optical material includes an adhesive formed from perfluoroalkylsulfonamidoethyl acrylate, aliphatic urethane acrylate oligomer and acrylate monomer. A film can include a first layer, a second layer disposed on the first layer and a polymerized composition disposed between the first and second layers and attaching the first layer to the second layer, the composition including perfluoroalkylsulfonamidoethyl acrylate, aliphatic urethane acrylate oligomer and acrylate monomer. A film can include a substrate and a plurality of structures disposed on the substrate, each of the structures formed by polymerizing a composition including perfluoroalkylsulfonamidoethyl acrylate, aliphatic urethane acrylate oligomer and acrylate monomer.

Abstract: Novel aqueous, acid etch solutions comprising a fluorinated surfactant are provided. The etch solutions are used with a wide variety of substrates, for example, in the etching of silicon oxide-containing substrates.

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: A composition comprising the condensation product of a least one fluorochemical polyether silane compound having a polyfluoropolyether segment and at least two hydrolysable silane groups per molecule, with one or more non-fluorinated compounds having at least two hydrolysable groups per molecule, and the reaction product thereof, is disclosed. The composition provides durable water, oil and stain repellency to a substrate.

Abstract: A composition comprising at least one fluorochemical polyether silane compound having a polyfluoropolyether segment and at least two hydrolysable silane groups per molecule, one or more non-fluorinated compounds having at least two hydrolysable groups per molecule, and/or a partial condensate thereof, is disclosed. The composition provides durable water, oil and stain repellency to a substrate.

Abstract: A process for preparing fluorochemical monoisocyanates comprises reacting at least one fluorochemical alcohol represented by the formula CnF2n+1SO2NCH3(CH2)mOH, wherein n=2 to 5, and m=2 to 4, with 4,4?-diphenylmethane diisocyanate (MDI) in a solvent in which the resulting fluorochemical monoisocyanate is not soluble; wherein the molar ratio of fluorochemical alcohol:MDI is from about 1:1 to about 1:2.5.

Abstract: A composition having at least about 10 percent perfluoroalkylsulfonamideoethyl acrylate; at least about 5 percent aliphatic urethane acrylate oligomer; at least about 1 percent acrylate monomer; and less than about 84 percent other reactive and non-reactive components. The composition, with the addiction of a light absorbing pigment, is particularly useful as a light absorbing adhesive in an optical element such as a rear projection screen that incorporates totally internally reflecting structures to disperse the light passing through the screen.