Select Granted Patents
EP 2,346,913: NANO-STRUCTURE COATED SHEETS/FILMS FOR OPTICAL ELECTRONIC DISPLAYS AND PHOTOVOLTAIC MODULES
ABSTRACT: The invention relates to a thin, nano-structured coating that provides optical light efficiency enhancement. The dried coating contains nano-structures that provide a very low haze level of less than 2 percent, and a light transmission improvement of at least 1% over the non-coated substrate. For the nano-structured coating on an acrylic substrate the transmission is greater than 93 percent, and preferably greater than 94 percent. The coatings of the invention are especially useful for optical electronic displays and photovoltaic modules.
US 8,574,462: HIGH TEMPERATURE STABLE POLYELECTROLYTES HAVING BACKBONE AROMATIC GROUPS
ABSTRACT: The invention relates to polyelectrolytes having backbone aromatic groups, and in particular to aromatic backbone group polyelectrolytes having high levels of sulfonation as well as cross-linking functionality. Preferably the polyelectrolyte backbone is free of linear alkyl groups.
US 7,815,986: BLEND OF IONIC (CO)POLYMER RESINS AND MATRIX (CO)POLYMERS
ABSTRACT: The invention relates to polymeric resin blends containing polyelectrolyte resins blended into a polymer or copolymer matrix. Specifically, the polyelectrolyte resins are (co)polymers without hydrolyzable groups. The matrix polymer is a tough, and highly chemical-resistant (co)polymer, preferably a fluoropolymer. The polymeric resin blend is useful for forming films, and especially films useful for MEAs for use in fuel cells.
US 7,396,880: BLEND OF IONIC (CO)POLYMER RESINS AND MATRIX (CO)POLYMERS
ABSTRACT: The invention relates to polymeric resin blends containing polyelectrolyte resins blended into a polymer or copolymer matrix. Specifically, the polyelectrolyte resins are (co)polymers without hydrolyzable groups. The matrix polymer is a tough, and highly chemical-resistant (co)polymer, preferably a fluoropolymer. The polymeric resin blend is useful for forming films, and especially films useful for MEAs for use in fuel cells.
US 9,239,051: WATERBORNE FLUOROPOLYMER COMPOSITION
ABSTRACT: This invention relates to a waterborne fluoropolymer composition useful for the fabrication of Li-Ion-Battery (LIB) electrodes. The fluoropolymer composition contains an organic carbonate compound, which is more environmentally friendly than other fugitive adhesion promoters currently used in waterborne fluoropolymer binders. An especially useful organic carbonate compound is ethylene carbonate (EC) and vinylene carbonate (VC), which are solids at room temperature, and other carbonates which are liquid at room temperature such as propylene carbonate, methyl carbonate and ethyl carbonate. The composition of the invention is low cost, environmentally friendly, safer, and has enhanced performance compared to current compositions.
US 8,182,912: COATING COMPOSITIONS FOR INORGANIC SUBSTRATES
ABSTRACT: The invention relates to a coating composition comprising a radiation grafted functionalized fluoropolymer. This coating is preferably, in the form of a powder coating. The coating can be used on inorganic substrates, especially un-primed metals. The invention also relates to the coated inorganic substrate and to the use of the coating composition to protect the inorganic substrate, especially from corrosion.
US 9,457,315 FLUOROPOLYMER GAS SEPARATION FILMS
ABSTRACT: The invention relates to a novel film, membrane or powder media made from fluoropolymers, especially PVDF-based and ETFE-based polymers, which are suitable for separating gases, especially carbon dioxide, from a gas mixture. The novel film has good selectivity, high permeance, good mechanical properties, and exhibits a high resistance to oxidant and acid attack. The separation film is especially useful in harsh and corrosive environments.
US 8,039,160: Multi-layer polyelectrolyte membrane
ABSTRACT: Multi-layer polyelectrolyte membranes are described wherein at least one of the layers contains at least one acrylic resin or vinyl resin having at least one ionic or ionizable group, and at least one additional polymer. The polymer has small or large domain sizes with respect to the acrylic resin or vinyl resin that is present in one or more layers. The polymer preferably has improved conductivity when formed into a film. The membranes are useful in batteries, fuel cells, and the like.
US 7,399,533: POLYVINYLIDENE FLUORIDE COATING FOR METAL SUBSTRATES
US 7,449,111: RESINS CONTAINING IONIC OR IONIZABLE GROUPS WITH SMALL DOMAIN SIZES AND IMPROVED CONDUCTIVITY
ABSTRACT: A polymer or blend is described which contains at least one acrylic resin or vinyl resin having at least one ionic or ionizable group, and at least one additional polymer. The polymer has small domain sizes with respect to the acrylic resin or vinyl resin. The polymer preferably has improved conductivity when formed into a film. Preferably, the polymers are useful in a variety of applications including in the formation of a membrane which is useful in batteries and fuel cells and the like. Methods of making the polymer blends are also described.
US 7,344,781: POLYMERIC COMPOSITION COMPRISING A SEMI-CRYSTALLINE FLUORINATED POLYMER, AN ACRYLIC POLYMER AND A NUCLEATING AGENT, AND FORMULATIONS AND COATINGS OBTAINED FROM THESE COMPOSITIONS
ABSTRACT: This polymeric composition comprises a blend of polymers comprising:
(a) a semi-crystalline fluorinated polymer,
(b) an acrylic polymer, and is characterized in that it additionally comprises:
(c) from 0.01 to 20% by weight, with respect to the total weight of the semi-crystalline fluorinated polymer and of the acrylic polymer, of a nucleating agent in the form of particles having a melting point greater than that of the semi-crystalline fluorinated polymer.
These compositions result in formulations in the form of dry powders or of powders in suspension in water or in a latent solvent for the semi-crystalline fluorinated polymer. Applied to a substrate, these formulations give, by baking, glossy and stable coatings comprising spherulites with a size of less than 5 μm.
ABSTRACT: The invention relates to a one-step fluoropolymer, especially polyvinylidene fluoride (PVDF), coating for use on metals, especially use on metal fuel line and brake tubes, etc, to provide a protective barrier with superior chemical resistance, impact resistance and heat resistance as well as good flexibility. The coating composition contains, on a resin solids basis, 75-94 percent polyvinylidene fluoride resin, 5-20 percent acrylic resin, and 1-15 percent polyepoxide resin. The coating has excellent adhesion on metal substrates, particularly on non-pretreated galvanized steel, without the need for a primer coating.
US 6,584,783: FLUID TRANSPORT
ABSTRACT: A conduit for transporting non-volatile liquids is provided in which the conduit’s internal surfaces have a surface energy lower than that of the non-volatile liquid.
US 6,470,691: FLUID TRANSPORT
ABSTRACT: A conduit for transporting non-volatile liquids is provided in which the conduit's internal surfaces have a surface energy lower than that of the non-volatile liquid.
US 6,362,295: FLUOROPOLYMER POWDER COATINGS FROM MODIFIED THERMOPLASTIC VINYLIDENE FLUORIDE BASED RESINS
ABSTRACT: An improved blend suitable for powder coating comprising an acrylic modified polyvinylidene fluoride polymer and pigment, processes for its preparation and use and coated articles produced there from are disclosed. Use of unpigmented acrylic modified fluoropolymers to form powder coating and objects so coated are also disclosed.
US 5,922,493: POLYMERIC ELECTRODE AND ELECTROLYTE ARTICLE OF MANUFACTURE
ABSTRACT: An article of manufacture is disclosed comprising an electrochemical cell having a positive electrode, an absorber-separator and a negative electrode wherein at least one of the electrodes or absorber-separator comprises a porous polyvinylidene fluoride. The porous polyvinylidene fluoride electrodes have an electrode material combined therewith, and the porous polyvinylidene fluoride absorber-separator has an electrolyte material combined therewith.
Select Pending Applications
WO/2013/158361 Process for Coating a Glass Substrate with An Aqueous Fluoropolymer Coating
ABSTRACT: The invention relates to an process for coating a glass substrate with an environmentally friendly aqueous, fluoropolymer coating composition. The process involves applying a polyurethane primer to the glass substrate, and partially, but not completely crosslinking this primer coating. An aqueous hydroxyl-functional fluoropolymer coating is then applied to the partially cross-linked primer coating, and the coating allowed to fully cure. The invention also relates to the intertwined multilayer primer/fluoropolymer coating on the glass substrate. The final coating has excellent wet adhesion to glass, good weathering, durability, chalking resistance, chemical resistance, and dirt pickup resistance.
WO/2015/042555 Nanodiamond coatings for solar cells
ABSTRACT: A nanodiamond coating for use on a solar cell, the coating including a nanodiamond material suspended in a liquid, wherein the nanodiamond material has a size range from about 1 nm to about 10 nm. Methods for improving the efficiency of a solar cell are provided, including, mixing a nanodiamond material with a liquid polymer or non-polymer solvent to form a nanodiamond-polymer suspension, forming a coating of the suspension on a top surface of a solar cell, and drying the coating such that a dried nanodiamond-polymer layer remains bonded to the solar cell. Useful nanodiamond coating compositions may include a nanodiamond material, a fluoropolymer, a liquid solvent for the fluoropolymer and at least one additive selected from the group consisting of dispersing agents, adhesion promoters, and coupling agents. The fluoropolymer may also be used in the form of an aqueous dispersion.
WO/2013/158360 Aqueous Fluoropolymer Glass Coating
ABSTRACT: The invention relates to an aqueous fluoropolymer coating composition for direct application to glass without the need for pre-treatment of the glass surface. The coating composition can also be used with other non-porous and porous substrates. The fluoropolymer coating contains a hydroxyl-functional fluoropolymer, and polyisocyanates. Preferably the coating composition also contains a water-dispersible hydroxyl functional polyurethane. The coating composition may exist as a 1-pack or a multi-pack coating system. The coating has excellent wet adhesion to glass, good weathering, chalking resistance, chemical resistance, and dirt pickup resistance.
WO/2016/014446 High Toughness Hollow Fiber Membranes Based on Vinylidene Fluoride
ABSTRACT: Hollow fiber membranes having improved toughness and durability are prepared using a vinylidene fluoride polymer-containing component, such as Kynaro resins, having relatively low crystallinity. One aspect of the invention provides a membrane in the form of a fiber, wherein i) the fiber has a porous wall of a polymeric component enclosing a central hollow space extending the length of the fiber, ii) the polymeric component has a crystallinity as determined by wide angle x-ray diffraction of less than about 35%, iii) the polymeric component is comprised of at least one homopolymer or copolymer of vinylidene fluoride and iv) the membrane has an energy to break of at least about 0.5 J per square mm of membrane cross section.
WO/2013/126490 Aqueous Polyvinylidene Fluoride Composition
ABSTRACT: The invention relates to a separator for non-aqueous-type electrochemical device that has been coated with an aqueous fluoropolymer coating. The fluoropolymer is preferably polyvinylidene fluoride (PVDF), and more preferably a copolymer of polyvinylidene fluoride. The fluoropolymer coating provides a porous coating on porous substrate separator used in non-aqueous-type electrochemical devices, such as batteries and electric double layer capacitors. The fluoropolymer coating improves the thermal resistance and mechanical integrity, and lowers the interfacial electrical impedance of the porous separator. The fluoropolymer composition optionally contains powdery particles that are held together on the separator by the fluoropolymer binder. In one embodiment, the starting fluoropolymer dispersion is free of fluorinated surfactant. In another embodiment, one or more fugitive adhesion promoters are added.
WO/2014/071144 Integrated electrode separator assemblies for lithium ion batteries
ABSTRACT: The invention relates to integrated electrode separators (IES), and their use in lithium ion batteries as replacements for free standing separators. The IES results from coating an electrode with a fluoropolymer aqueous-based emulsion or suspension, and drying the coating to produce a tough, porous separator layer on the electrodes. The aqueous fluoropolymer coating may optionally contain dispersed inorganic particles and other additives to improve electrode performance such as higher ionic conduction or higher temperature use. The IES provides several advantages, including a thinner, more uniform separator layer, and the elimination of a separate battery component (separator membrane) for a simpler and cost-saving manufacturing process. The aqueous separator coating can be used in combination with a solvent cast electrode as well as an aqueous cast electrode either in two separate process steps, or in a one-step process.