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| Number | Title | Issue Date |
| 8178479 | Compatibilized polymer processing additives The present invention relates to compositions and methods for improving the melt processing of polymeric materials, and more particularly to the use of compatibilized polymer processing additives to enhance the melt processing of polymeric matrices. ... | 05/15/2012 |
| 8106105 | Compositions and methods for producing high strength composites The present invention relates to compositions and methods for producing high strength composites. In one embodiment, a polymer matrix and a naturally-occurring inorganic material are melt processed to produce a high strength composite. In a preferred embodiment, the... | 01/31/2012 |
| 7838608 | Fluorinated surfactants for making fluoropolymers The invention provides a fluorinated surfactant having the general formula: [Rf—(O)t—CHF—(CF2)n—COO—]iXi+ (I) wherein Rf represents a partially or fully f... | 11/23/2010 |
| 7807726 | Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups The invention provides a method for recovery of a fluorinated anionic surfactant from a basic anion exchange resin having quaternary ammonium groups, the method comprising eluting the anion exchange resin with a composition comprising an ammonium salt and a water mi... | 10/05/2010 |
| 7803894 | Coating compositions with perfluoropolyetherisocyanate derived silane and alkoxysilanes Described are coating compositions for treating substrates such as hard and soft surfaces to render the surfaces oil and water repellent, as well as stain and dirt resistant. The compositions described include three component systems in an organic solvent, where the... | 09/28/2010 |
| 7795332 | Method of removing fluorinated carboxylic acid from aqueous liquid A method for removing a fluorinated carboxylic acid or salt thereof from an aqueous liquid by contacting the aqueous liquid with adsorbent particles. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of partially fluorinated carbo... | 09/14/2010 |
| 7776946 | Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant The present invention provides an aqueous emulsion polymerization of fluorinated monomers including gaseous fluorinated monomers using a perfluoro ether surfactant as an emulsifier. The perfluoro ether surfactants correspond to formula (I) Rf—... | 08/17/2010 |
| 7754914 | Method of recovering fluorinated acid surfactants from adsorbent particles loaded therewith The present invention provides a method of recovering a fluorinated acid surfactant or salt thereof from adsorbent particles to which said fluorinated acid surfactant has been adsorbed. The method comprises mixing adsorbent particles having adsorbed fluorinated acid... | 07/13/2010 |
| 7754795 | Coating composition 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, wherei... | 07/13/2010 |
| 7728087 | Fluoropolymer dispersion and method for making the same A method for polymerizing, in an aqueous medium, at least one fluorinated monomer in the presence of a non-copolymerizable, non-fluorinated surfactant. The surfactant is generally selected from a non-ionic surfactant, a primary anionic surfactant, or a combination t... | 06/01/2010 |
| 7671112 | Method of making fluoropolymer dispersion A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [... | 03/02/2010 |
| 7659333 | Fluorinated surfactants for use in making a fluoropolymer The present invention provides a fluorinated surfactant having the general formula: [Rf—(O)t—CQH—CF2—O]n—R—G (I) wherein Rf represents a partially or fully fluorinated alipha... | 02/09/2010 |
| 7638186 | Fluoropolymer containing laminates The multilayer film serves as a laminate. The film is a multilayered structure that, in its base form, encompasses an intermediate layer with first and second outer layer affixed to opposing sides of the intermediate layer. The first outer layer is a semi-crystallin... | 12/29/2009 |
| 7589140 | Fluoropolymer bonding compositions Provided are fluoropolymer blends comprising a fluoropolymer having a major amount of fluorothermoplastic, a bubble suppressing metal compound, a base and a phase transfer catalyst. Also provided are layered articles comprising a first layer having the described flu... | 09/15/2009 |
| 7566480 | Fluorochemical composition for treating porous stone The present invention relates to a method of treating porous stone, comprising contacting porous stone with a composition comprising: (i) a fluorinated oligomer having a weight average molecular weight of not more than 70,000 g/mol... | 07/28/2009 |
| 7495051 | Nanocomposite and method of making the same A composition comprising exfoliated silicate platelets; a thermoplastic polymer; and a block copolymer and method of making the same. ... | 02/24/2009 |
| 7462667 | Primer coating of PTFE for metal substrates The present invention provides an aqueous coating composition comprising (i) particles of a non-melt processible polymer of tetrafluoroethylene and (ii) a non-fluorinated polymer selected from the group consisting of a polysulfone, a polyamide, a polyimide, a polyam... | 12/09/2008 |
| 7402625 | Compositions and method for improving the processing of polymer composites A composition that employs a coupling agent with a fluoropolymer processing aid to address melt-processing issues related to the use of interfering components in melt-processable polymeric binders. ... | 07/22/2008 |
| 7375157 | Melt-processible polymer composition comprising fluoropolymer having long chain branches A polymer melt additive that is suitable for use as a processing aid in the extrusion of a non-fluorinated polymer. The polymer melt additive composition includes a fluoropolymer that has a long chain branching index (LCBI) of at least 0.2 and a zero shear rate visc... | 05/20/2008 |
| 7358296 | Aqueous dispersions of fluoropolymers Fluorine-containing emulsifiers can be removed from fluoropolymer dispersions by adding to the dispersion a non ionic emulsifier, removing the fluorine-containing emulsifier by contact with an anion exchanger and separating the dispersion from the anion exchanger. T... | 04/15/2008 |
| 7342081 | Fluoropolymer compositions, coated articles, and method of making the same A fluoropolymer composition comprising a fluoropolymer with a particle size distribution having a ratio of the mode to D95 of 0.75 or greater and wherein when the fluoropolymer is a copolymer consisting of interpolymerized units derived from tetrafluoroethylene and ... | 03/11/2008 |
| 7342066 | Aqueous dispersions of polytetrafluoroethylene particles The present invention provides an aqueous non-melt processible polytetrafluoroethylene dispersion comprising non-melt processible polytetrafluoroethylene particles in an amount between 30 and 70% by weight based on the total weight of the dispersion and one or more ... | 03/11/2008 |
| 7314898 | Microsphere-filled polytetrafluoroethylene compositions The present invention is a composition that includes granular-grade polytetrafluoroethylene and a plurality of microspheres, where the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter. ... | 01/01/2008 |
| 7311780 | Coating device and method using pick-and-place devices having equal or substantially equal periods A sufficient number of pick-and-place devices (e.g., rolls) whose periods of contact with a substrate are equal or substantially equal to one another are used to form continuous void-free uniform coatings despite the occurrence of unintended or intended coating cali... | 12/25/2007 |
| 7300371 | Apparatus for deflecting or inverting moving webs A diverting roller has a roller body having a longitudinal axis. A plurality of pairs of pulleys are rotatably mounted on the roller body adjacent a circumference of the roller body. An endless belt is looped around each of the pairs of pulleys in such a fashion tha... | 11/27/2007 |
| 7294668 | Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant An aqueous non-melt processible polytetrafluoroethylene dispersion having non-melt processible polytetrafluoroethylene particles in an amount of 30 to 70% by weight and an amount of non-ionic surfactant between 2 and 15% by weight based on the weight of polytetraflu... | 11/13/2007 |
| 7291369 | Multi-layer articles including a fluoroelastomer layer and a barrier layer and method of making the same A multi-layer article includes a first polymer layer bonded to a barrier layer, which is bonded to a second polymer layer. The first polymer layer can include a fluoroelastomer. The second polymer layer can be a non-fluorinated polymer layer. The barrier layer can i... | 11/06/2007 |
| 7279522 | Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant The present invention provides a fluoropolymer dispersion comprising fluoropolymer particles having an average particle size of 10 to 400 nm dispersed in water whereby the dispersion is free of fluorinated surfactant having a molecular weight of less than 1000 g/mol... | 10/09/2007 |
| 7262246 | Emulsion polymerization of fluorinated monomers The use of perfluorinated polymers and/or fluorinated ionomers as surfactant emulsifiers in emulsion polymerization of fluorinated monomers. ... | 08/28/2007 |
| 7235302 | Fluoropolymer bonding composition and method A multi-layer structure includes 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 compound and... | 06/26/2007 |
| 7187995 | Maximization of yield for web-based articles Techniques are described for inspecting a web and controlling subsequent conversion of the web into one or more products. A system, for example, comprises an imaging device, an analysis computer and a conversion control system. The imaging device images the web to p... | 03/06/2007 |
| 7175733 | Fluoropolymer bonding composition and method A multi-layer structure includes 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 compound and... | 02/13/2007 |
| 7148301 | High purity fluoropolymers The invention relates to high purity fluoropolymers and processes for making such materials. These polymers are particularly suited for applications in the semiconductor industry. The process comprises removal of unstable polymer end groups by fluorination and remov... | 12/12/2006 |
| 7074862 | Emulsifier free aqueous emulsion polymerization process for making fluoropolymers Emulsifier free fluoropolymer manufacturing method in which (a) a chain transfer agent, or a mixture of chain transfer agents are used wherein the chain transfer agents do not yield more than 0.4 weight % relative to the monomer feed of water soluble fluorinated com... | 07/11/2006 |
| 7070842 | Method of bonding a fluoroelastomer layer to a silicone rubber layer, laminate for use in said method and article produced therewith The present invention provides a method of bonding a fluoroelastomer layer to a silicone rubber layer, the method comprising the steps of: (i) providing a layer of a curable fluoropolymer composition comprising (a) a fluoropolymer ... | 07/04/2006 |
| 7064170 | Emulsifier free aqueous emulsion polymerization to produce copolymers of a fluorinated olefin and hydrocarbon olefin Provided is a process for making a copolymer of fluorinated olefin and hydrocarbon olefin selected from ethylene, propylene and mixtures thereof, the process comprising a substantially emulsifier free aqueous emulsion polymerization of said fluorinated olefin and sa... | 06/20/2006 |
| 7060772 | Fluoropolymers from tetrafluoroethylene and perfluoro(alkoxyalkyl vinyl) ether A fluoropolymer having a melting point of at least 160° C. is provided wherein the fluoropolymer is derived from tetrafluoroethylene as the major component, one or more perfluoro vinyl ethers as the minor component, the perfluoro vinyl ether having the formula CF | 06/13/2006 |
| 7045571 | Emulsion polymerization of fluorinated monomers The use of perfluorinated polymers and/or fluorinated ionomers as surfactant emulsifiers in emulsion polymerization of fluorinated monomers. ... | 05/16/2006 |
| 7041728 | Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant The present invention provides a method of making an aqueous dispersion of non-melt processible polytetrafluoroethylene, the method comprising: (a) an aqueous emulsion polymerization of an amount of tetrafluoroethylene to produce a final amount of polytetrafl... | 05/09/2006 |
| 7023542 | Imaging method and apparatus The present invention relates to imaging apparatus and method for detecting optical properties of transparent media. The present invention superimposes, either optically or electronically, at least two images of the transparent media in order to obtain the optical p... | 04/04/2006 |
