Patent application number | Description | Published |
20080261050 | Multilayer Fluoropolymer Films - The invention relates to a multi-layer film having at least one fluoropolymer layer, useful for high-purity contact applications. Preferably the fluoropolymer layer(s) are polyvinylidene fluoride polymers and copolymers. | 10-23-2008 |
20080281031 | Polyvinylidene Fluoride Having an Increased Melting Point - The invention relates to compositions of polyvinylidene fluoride (PVDF) and its copolymers that have been modified with an onium salt. The PVDF compositions exhibit an increased melting point, a reduced heat distortion and piezo properties. The improved properties can be further enhanced through annealing, and/or the addition of nanoclays. Additionally, the combination of PVDF, nanoclays and annealing can also produce a PVDF with an increased melting point and piezoelectric properties. | 11-13-2008 |
20090069488 | FLUOROPOLYMERS HAVING IMPROVED WHITENESS - The present invention relates to the preparation of a fluoropolymer exhibiting improved whiteness upon fabrication. The fluoropolymer is a multiphase copolymer or blend of fluropolymers. Fluoropolymer compositions of this invention could have application in both melt processing and solvent casting operations for such products as pipes, tubes, sheets, rods, solvent-casted and melt-processed films. | 03-12-2009 |
20100119748 | FOAMED POLYVINYLIDENE FLUORIDE TUBULAR STRUCTURES - The invention relates to foamed polyvinylidene tubular structures—and particularly those for use as conduit. The tubular structures may be corrugated, and are especially useful for fiber-optic plenum conduit. The polyvinylidene foam may also be directly applied to fiber optic cable. | 05-13-2010 |
20100175742 | PHOTOVOLTAIC MODULES HAVING A POLYVINYLIDENE FLUORIDE BACKSHEET - The invention relates to a photovoltaic module for capturing and using solar radiation having as a backsheet a composition containing polyvinylidene fluoride. The polyvinylidene fluoride backsheet layer is exposed to the environment and provides chemical resistance, low water vapor transmission, electrical insulation, and UV light protection. | 07-15-2010 |
20110278193 | POLYVINYLIDENE BARRIER LAYER FOR CONTAINER INTERIORS - The invention relates to containers having a thin layer of polyvinylidene fluoride polymer or copolymer on its inner and/or outer surface. The polyvinylidene fluoride layer acts as a barrier layer in reducing or preventing the migration of chemicals from thermoplastic or thermoset polymeric containers into the contents of the container. This is especially applicable for containers in the food, biotech and pharmaceutical industries, as well as for toxic or corrosive materials. | 11-17-2011 |
20120045603 | FOAMED POLYVINYLIDENE FLUORIDE STRUCTURE - The invention relates to a foamed fluoropolymer, preferably a polyvinylidene fluoride (PVDF) structure, such as from Kynar® resins. The foamed structure is continuous self-supporting, sized, and has a dense skin. The foamed structure is manufactured in a process using foaming agents and nucleating agents. The structure is sized into a specific shape during the manufacturing process—requiring a good melt viscosity of the PVDF foam. In one process, a master batch containing the nucleating agent is used. The foamed article could be a sheet, film, profile, tube, pipe, article, rod foam-core structure, or other self-supporting shape. Foamed tubes, pipes, rods, sheets and conduit are especially useful. The foamed structure of the invention provides added value by being lighter weight, more flexible, and more impact resistant than a comparable non-foamed PVDF structure. It also has increased hysteresis, increased insulation properties, reduced dielectric constant, and increased compressibility. | 02-23-2012 |
20120245238 | MELT PROCESSABLE COMPOSITION FROM RECYCLED MULTI-LAYER ARTICLES CONTAINING A FLUOROPOLYMER LAYER - The invention relates to a composition that has been obtained by the melt-process recycling of one or more multi-layer articles, where the multi-layer articles are composed of at least one melt-processible fluoropolymer layer. The composition of the invention is a compatible blend of the different layers from the multi-layer articles. The other layers of the multi-layer articles are also melt-processible, and include one or more layers chosen from: a) a melt-processible fluoropolymer of a different composition, b) a non-fluoropolymer, and c) a barrier layer. The composition is useful for forming an article in a melt-process operation. The composition may be used by itself, may be blended with other virgin or recycled materials, or may be used at low levels with melt-processible polymers as a process aid. | 09-27-2012 |
20130108816 | MULTI-LAYER FLUOROPOLYMER FOAM STRUCTURE | 05-02-2013 |
20140148528 | IRRADIATED FLUOROPOLYMER ARTICLES HAVING LOW LEACHABLE FLUORIDE IONS - The invention relates to fluoropolymer articles that have been irradiated with at least 5 Kilo Gray of radiation, where the resulting articles have low levels of leachable or extractable fluoride ion. The low fluoride ion migration from the irradiated article is due to the presence of low levels of metalic salts or oxides in the fluoropolymer composition. The invention is especially useful for fluoropolymer articles in which the fluorpolymer layer contacts a biological or pharmaceutical fluid, and that are subjected to sterilization by irradiation. | 05-29-2014 |
20140333002 | MELT PROCESSABLE COMPOSITION FROM RECYCLED MULTI-LAYER ARTICLES CONTAINING A FLUOROPOLYMER LAYER - The invention relates to an article that has been obtained by the melt-process recycling of one or more multi-layer articles, where the multi-layer articles are composed of at least one melt-processible polyvinylidene fluoride layer. The composition of the invention is a compatible blend of the different layers from the multi-layer articles. The other layers of the multi-layer articles are also melt-processible, and include one or more layers chosen from: a) a melt-processible fluoropolymer of a different composition, b) a non-fluoropolymer, and c) a barrier layer. The composition is useful for forming an article in a melt-process operation. The composition may be used by itself, may be blended with other virgin or recycled materials, or may be used at low levels with melt-processible polymers as a process aid. | 11-13-2014 |