Abstract: Polymer blends having improved electromechanical responses and mechanical properties for use in electromechanical application are disclosed. In particular, polymer blend including at least one electrostrictive terpolymer, e.g., poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) or a derivative thereof, and at least one fluoropolymer, e.g., PVDF or derivative thereof such as PVD-TrFE are disclosed. The polymer blends advantageously have a transverse strain, i.e., a strain perpendicular to the applied electric field direction, that is about 1.5% or higher (as measured at 100 MV/m) while also having an elastic modulus of no less than about 400 MPa (as measured at 30° C. and 1 Hz by dynamic mechanical analyzer).

Abstract: Polymeric compositions comprising: 1) at least one thermoprocessable semicrystalline halo-polymer; 2) an additive in amounts between 0.01 and 10% by weight of 1) one or more (per)fluoropolyether polymers of formula: Q-O-[A-B]z-[A-B?]z?-A-Q???(I) wherein: A=—(X)a—O-A?-(X?)b— wherein A? is a perfluoropolyether chain; X, X?=—CF2—, —CF2CF2—, —CF(CF3)—; a, b=0 or 1; B derives from one or more olefins, of which at least one homopolymerizable by radical way, of formula: —[(CR1R2—CR3R4)j(CR5R6—CR7R8)j?]—??(Ia) wherein j=1-30, j?=0-29, with the proviso that 2<(j+j?)<30; R1-R8=halogen, H, C1-C6 (per)haloalkyl, C1-C6 alkyl, or C1-C6 oxy(per)fluoroalkyl; B?=(Ia) but at least one of R1-R8 has a meaning different from that in B, and 2?(j+j?)<30; z?2; z? is 0 or an integer; z, z? are such that the number average molecular weight of (I) is between 500 and 500,000; Q, Q?=C1-C3 perfluoroalkyl; C1-C6 alkyl; or functional end group(s).

Abstract: A fluoropolymer molding method and the resulting molded article are disclosed where the fluoropolymer is composed of fluoropolymer particles each having a multi-layer structure that consists of at least two types of fluoropolymers having different melting points, with at least one inner layer made of a fluoropolymer with a melting point higher than that of the outermost fluoropolymer. The fluoropolymer of the at least one inner layer is molded at a temperature higher than the melting point of the lowest melting point of the fluoropolymers that form the outermost layers of the multi-layer-structure fluoropolymer particles, and lower than the melting point of the fluoropolymer having the highest melting point. The resulting articles have excellent chemical liquid resistance and gas impermeability and low linear expansion coefficient.

Abstract: Vulcanizable fluoroelastomer compositions comprising: A) a fluoroelastomer matrix based on vinylidene fluoride (VDF) with a Mooney viscosity (1+10) at 121° C. of less than 35 MU (Mooney Units) measured according to ASTM standard D 1646; and B) a semi-crystalline fluoropolymer, in an amount of from 20% to 70% by weight relative to the total weight of A)+B), the semi-crystalline fluoropolymer being constituted of tetrafluoroethylene (TFE) homopolymers and copolymers of TFE with one or more monomers containing at least one unsaturation of ethylenic type, in an amount of from 0.01 to 10 mol %, said semi-crystalline fluoropolymer having a mean particle size between 10 and 400 nm.

Abstract: A multilayer optical body is disclosed. The optical body includes an optical film including polyester, a first skin layer is disposed on at least one side of the polyester optical film, and a strippable skin layer is disposed on the first skin layer. The first skin layer includes a mixture of a polyacrylate and an anti-static polymer. Methods of making such optical bodies are also disclosed.

Abstract: In order to make an elastomeric sealing element available which is also suitable, in particular, for sealing tasks, with which the highest thermal and chemical resistance is partially required, and at the same time to save on costs and resources it is suggested that the elastomeric sealing element comprise a first and a second sealing section, wherein the first sealing section is produced with the use of a first elastomeric material containing a first cross-linking system, wherein the second sealing section is produced with the use of a second elastomeric material containing a second cross-linking system, wherein the first and the second sealing sections border directly on one another in a seam area and their elastomeric materials are materially joined to one another, and wherein at least one of the two cross-linking systems comprises, in addition, a cross-linking agent for the respectively other elastomeric material.

Abstract: Provided is a cross-linkable fluororubber composition capable of giving a fluororubber cross-linked molded article that has excellent mechanical strength and low friction properties. The cross-linkable fluororubber composition includes a coagulum obtained by co-coagulating a fluororubber (A) and a fluororesin (B).

Abstract: A composition and a polymer are provided. The composition includes the polymer and a melamine derivative. The polymer has a formula of R is hydrogen, halide, alkyl group, alkoxyl group, haloalkyl group or nitro group. n is 1-5 of integer. x+y+z=1, x>0, y?0, z?0. The melamine derivative includes R1 is hydrogen, CqH2q+1, or m and q independently is 1-10 of integer. R2, R3 and R4 independently is hydrogen, halide, or C1-C54 alkyl group.

Abstract: A fluoropolymer molding method and the resulting molded article are disclosed where the fluoropolymer is composed of fluoropolymer particles each having a multi-layer structure that consists of at least two types of fluoropolymers having different melting points, with at least one inner layer made of a fluoropolymer with a melting point higher than that of the outermost fluoropolymer. The fluoropolymer of the at least one inner layer is molded at a temperature higher than the melting point of the lowest melting point of the fluoropolymers that form the outermost layers of the multi-layer-structure fluoropolymer particles, and lower than the melting point of the fluoropolymer having the highest melting point. The resulting articles have excellent chemical liquid resistance and gas impermeability and low linear expansion coefficient.

Abstract: There is provided a comprising an amorphous peroxide curable fluoropolymer comprising an iodine, bromine or chlorine containing cure site, an organic peroxide with a 10-hour half life temperature below 90° C., and a coagent, where the amorphous fluoropolymer has a storage modulus at 25° C. and 0.1 rad/s of less than or equal to 300 kPa, and also where the fluropolymer 90% cure time as measured by sealed torsion shear rotorless curemeter in ASTM D5289-07 is less than 30 minutes at 110° C. There is also provided a fluoroelastomer preparable by curing such composition. There is further provided a cure in place process using such composition to create a cure in place article and cure in place articles from such process.

Abstract: It is an object of the present invention to provide a fluororesin composition which hardly causes molding defects even when high-speed molding is performed in covering extrusion molding within a relatively broad molding temperature range and which can give covered electric wires, in particular foamed electric wires, excellent in surface smoothness. A fluororesin composition comprising a polytetrafluoroethylene [PTFE] having a standard specific gravity of 2.15 to 2.30 and a tetrafluoroethylene/hexafluoropropylene-based copolymer [FEP], the content of said PTFE being 0.

Abstract: The present invention provides a crosslinkable composition being capable of providing a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. Also there is provided a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. The crosslinkable composition comprises (A) a compound having at least one specific crosslinkable reaction group and (B) a nonperfluoro fluorine-containing elastomer being crosslinkable with the compound (A).

Abstract: Disclosed is an additive for a thermoplastic resin, which provides a thermoplastic resin composition excellent in formability and also provides a shaped article excellent in surface appearance and flame retardance. The additive for a thermoplastic resin comprises tetrafluoroethylene polymer (A) and alkyl methacrylate polymer (B) containing 50% by mass or more of units of alkyl methacrylate having an alkyl group with carbon numbers of 2 to 6.

Abstract: There are provided novel crosslinked fluorine-containing elastomer fine particles, a process for preparing crosslinked fluorine-containing elastomer fine particles and a resin composition comprising the same. The crosslinked fluorine-containing elastomer fine particles are crosslinked fluorine-containing elastomer fine particles having a gel fraction of not less than 85% by mass or crosslinked fluorine-containing elastomer fine particles obtained by crosslinking fluorine-containing elastomer particles having at least three iodine atoms per one polymer molecule at an end thereof. The composition is one comprising those fine particles and a synthetic resin.

Abstract: The invention relates to a polymer of core-shell structure containing a core having at least one elastomeric polymer, with a glass transition temperature of less than 25° C., and a shell having at least one polymer, with a glass transition temperature of greater than 25° C., where at least one of the polymers includes (meth)acrylic acid ester monomers containing organic carbon derived from biomass. The present invention also relates to a process for preparing the core-shell polymers and to their use as impact additives, and to a composition containing them.

Abstract: The present disclosure relates to compounds and medical devices activated with a solvophobic material functionalized with a first reactive member and methods of making such compounds and devices.

Abstract: Heat aging of the composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, the alkyl containing 1 to 5 carbon atoms and melt flowable polytetrafluoroethylene is effective to cause thermal transformation of the composition in the solid state, which is epitaxial co-crystallization of the polymer components of the composition, and other valuable changes, such as increased continuous use temperature.

Abstract: A fluoroelastomer mixture, including: a peroxide-vulcanizable fluoroelastomer (A) containing an iodine atom; and a peroxide-vulcanizable fluoroelastomer (B) containing an iodine atom. The fluoroelastomer (A) is a copolymer (a1) consisting of 50 to 85 mol % of a vinylidene fluoride unit and 15 to 50 mol % of a perfluoro(alkyl vinyl ether) unit, or a copolymer (a2) consisting of 45 to 85 mol % of a vinylidene fluoride unit, 1 to 30 mol % of a tetrafluoroethylene unit, and 14 to 30 mol % of a perfluoro(alkyl vinyl ether) unit. Further the fluoroelastomer (B) has a fluorine content of 70.0% or more. Also disclosed is a composition for peroxide vulcanization containing the above fluoroelastomer composition (i), a polyfunctional unsaturated compound (ii) and a peroxide (iii), as well as a method for producing the fluoroelastomer mixture.

Abstract: The invention provides a PTFE-containing aqueous dispersion composition which is excellent in mechanical stability and scarcely allows the formation of agglomerates due to fibrillation of the PTFE resin during transportation or processing thereof. This invention is a polytetrafluoroethylene-containing aqueous dispersion composition comprising a polytetrafluoroethylene resin (A), a hydrocarbon-derived nonionic compound (B) and a water-soluble high-molecular compound (C) having no oxygen atom in the main chain thereof.

Abstract: The present application relates to a rubber composition containing a fluororubber, a radical initiator having a 1-minute half-life temperature of 280° C. or higher, and a crosslinking assistant having a melting point of 200° C. or higher and having two or more double bonds between carbon atoms; and a thermoplastic resin composition containing a fluororesin and the rubber composition.

Abstract: The present invention relates to a resist top coat composition and a patterning process adopting such a material, which resist top coat composition is provided for forming a top coat on a photoresist film so as to protect the photoresist film, in liguid immersion photolithography.

Abstract: The present invention relates to photobioreactors and more particularly to the use of a transparent composition based on at least one methacrylic polymer for constructing installations for the culture of photosensitive organisms. This composition can be in the form of films, plates, profiled elements or cylinders such as tubes. The invention also relates to a transparent multilayer structure comprising at least one layer of a methacrylic polymer and one layer comprising at least one antifouling additive, and to the use thereof for constructing installations for the culture of photosensitive organisms.

Abstract: A fuel cell comprising a proton transporting membrane is provided. The proton transporting membrane comprises a polyelectrolyte film comprising a multilayer comprising an interpenetrating network of a net positively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms and a net negatively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms, and further comprising a fluorinated counterion within the multilayer.

Abstract: A polymer blend including: (i) a fluoroolefin polymer prepared by a process, including contacting in a first reaction zone an initiator, 2,3,3,3-tetrafluoro-1-propene, and optionally, at least one first ethylenically unsaturated comonomer capable of copolymerizing therewith, wherein contacting is carried out at a first temperature, pressure and length of time sufficient to produce the fluoroolefin polymer; and (ii) an acrylic polymer prepared by a process, including contacting in a second reaction zone an initiator, at least one acrylic monomer selected from the group consisting of: acrylic acid, methacrylic acid, acrylate ester, methacrylate ester, and a mixture thereof, and optionally, at least one second ethylenically unsaturated comonomer capable of copolymerizing therewith, wherein contacting is carried out at a second temperature, pressure and length of time sufficient to produce the acrylic polymer. Processes for preparing the polymer blends are also provided.

Abstract: Disclosed herein is a fuel management system having at least one fluororubber component in contact with fuel wherein said fluororubber component comprises i) a cured fluoroelastomer and ii) 10 to 110 parts by weight of a non-fibrillating polytetrafluoroethylene micropowder per hundred parts by weight fluoroelastomer.

Abstract: A melt-mixed composition of non-melt flowable polytetrafluoroethylene (PTFE) and melt-fabricable perfluoropolymer is provided that exhibits thixotropy at increasing shear rate in the molten state and high elongation at break even at PTFE concentrations well above 4 wt %, based on the combined weight of the PTFE and the perfluoropolymer, e.g. at least 200% up to at least 30 wt % PTFE, the composition also exhibiting the structure of a dispersion of submicrometer-size particles of the PTFE in a continuous phase of the melt-fabricable perfluoropolymer.

Abstract: A process aid for improving the processability of non-fluorinated melt processible polymers contains a fluoroelastomer having a Mooney viscosity (ML (1+10) at 121° C.) between 30 and 100 and at least two interfacial agents, one a polycaprolactone having a Mn between 2000 and 8000 and the other a polyalkylene oxide having a Mn between 3000 and 5000.

Abstract: A method for the preparation of a modified fluoropolymer powdered material is disclosed. A suspension of solid fluoropolymer particles together with PTFE particles in an aqueous carrier, is frozen and the frozen carrier is then removed by sublimation at sub-atmospheric pressure to produce a dry powder of modified fluoropolymer particles.

Abstract: Unique PTFE structures comprising islands of PTFE attached to an underlying expanded polytetrafluoroethylene (ePTFE) structure and to methods of making such structures is disclosed. The ePTFE material may or may not have been exposed to amorphous locking temperatures. These unique structures exhibit islands of PTFE attached to and raised above the expanded PTFE structures.

Abstract: Extrudable (per)fluoroelastomer compositions comprising crosslinkable (per)fluoroelastomers having: at least two glass transition temperatures Tg on DSC analysis, at least one melting peak on DSC analysis with a ?H of second melting of between 0.3 and 5.5 J/g, and a bimodal molecular weight distribution such that the ratio Mn1/Mn2 is between 10 and 30, wherein Mn1 represents the number-average molecular weight of the distribution of the high molecular weight fluoroelastomer and Mn2 represents the number-average molecular weight of the distribution of the low molecular weight fluoroelastomer.

Abstract: There is provided a thin highly dielectric film for a film capacitor being excellent in mechanical strength, in which highly dielectric inorganic particles can be blended to a dielectric resin at high ratio, and rubber particles (B) and preferably highly dielectric inorganic particles (C) are dispersed in a thermoplastic resin (A).

Abstract: A blend composition comprises a fluorine-containing polymer electrolyte and a fluoro-rubber. An electrolyte membrane may be prepared from the blend composition. The electrolyte membrane may be used in electrochemical cells such as electrolyzers, batteries and fuel cells.

Abstract: This invention pertains to sealing articles of vulcanized (per)fluoroelastomer compositions incorporating particles of a vinylidene fluoride (VDF) polymers having a Shore A hardness of at least 85 when determined according to ASTM D 2240 Type A Durometer method, and a compression set of less than 30%, when determined according to ASTM D395 at 200° C. for 70 h on O-ring according to ASTM D1414, and to a process for their manufacture by vulcanizing-molding and thermal post-treating at a temperature above the melting point of the VDF polymer.

Abstract: Self-bonding curable fluoroelastomer compositions are provided wherein the compositions including a) a fluoropolymer composition having at least one curable fluoropolymer; and b) a compound selected from the group consisting of aluminum acrylates, silicon acrylates, and ammonia acrylates, wherein the self-bonding curable fluoroelastomer composition is able to bond directly to a substrate. Bonded structures formed of such self-bonding compositions and a substrate having a surface bonded thereto are also described herein along with a method for bonding a self-bonding curable fluoroelastomer composition to a substrate surface. The fluoroelastomers herein may encompass both non-fully fluorinated (FKM) and fully fluorinated (FFKM) elastomers.

Abstract: A curable polymer composition that is quickly curable to form a cured article having excellent adhesion and followability to a substrate and at least including (A) an acrylic copolymer having a hydrogen atom bonded to a silicon atom, (B) a compound having at least two aliphatic unsaturated bonds in one molecule thereof, (C) a fluoroolefin copolymer including vinylidene fluoride as main component, and (D) a catalyst for hydrosilylation reaction.

Abstract: This invention provides water-swellable articles and hydrogels that contain a hydrophilic polymer and perfluorocyclobutane crosslinking segments. The perfluorocyclobutane crosslinking segments are covalently attached to the polymeric chains of the hydrophilic polymer so that the crosslinking segments chemically link the polymeric chains to each other. The present invention also provides a method of making a crosslinked hydrogel by first attaching one or more substituted aromatic trifluorovinyl or aromatic trifluorovinyl ether moieties to a hydrophilic polymer to form a modified polymer and then heating the modified polymer at an elevated temperature to form perfluorocyclobutane segments from the trifluorovinyl or trifluorovinyl ether moieties.

Abstract: A composite membrane for fuel cell applications includes a support substrate with a predefined void volume. The void volume is at least partially filled with an ion conducting polymer composition. Characteristically, the ion conducting polymer composition includes a first polymer with a cyclobutyl moiety and a second polymer that is different than the first polymer.

Abstract: An elastomer having discrete pieces of porous material distributed throughout the elastomer. Preferably, the porous material is expanded polytetrafluoroethylene (PTFE), and the tensile stress of the composition is greater than about 1 MPa, preferably greater than 1.5 MPa, at 50% elongation; greater than 2 MPa, preferably greater than 3 MPa and most preferably greater than 4 MPa, at 100% elongation.

Abstract: An ion conducting polymeric structure suitable for fuel cell applications is provided. The polymeric structure comprises a non-homogenous polymeric layer. The non-homogeneous layer is a blend of a first polymer comprising cyclobutyl moiety; and a second polymer having a non-ionic polymer segment. The weight ratio of the first polymer to the second polymer varies as a function of position within the non-homogenous layer. The blend composition may be cast into an electrolyte membrane that can be used to prepare electrochemical cells such as batteries and fuel cells.

Abstract: There is provided a crosslinkable fluorine-containing rubber composition being capable of giving a fluorine-containing rubber crosslinked and molded article having a low friction coefficient and assuring an increased proportion of a fluorine-containing resin around the surface of a fluorine-containing rubber, a molded article obtained by crosslinking the composition, and a method for producing the molded article. The crosslinkable fluorine-containing rubber composition comprises a fluorine-containing rubber (A) comprising vinylidene fluoride unit, a fluorine-containing resin (B) and a polyol crosslinking agent (C), wherein the fluorine-containing rubber (A) and the fluorine-containing resin (B) are kneaded at a temperature of not less than a temperature being lower by 5° C. than the melting point of the fluorine-containing resin (B).

Abstract: A polymer blend useful as an ion conductor in fuel cells includes a first polymer having a cyclobutyl moiety and a second polymer include a sulfonic acid group.

Abstract: The present invention provides a processing additive which can bring about improvements in moldability at Mooney viscosity levels at which the dispersibility in a melt-processable resin is high and which further can work at reduced addition levels. The present invention is a processing additive comprising a fluoropolymer having an acid value of not lower than 0.5 KOH mg/g.

Abstract: A polymer blend useful as an ion conductor in fuel cells includes a first polymer that includes a non-ionic segment and a second polymer that includes a sulfonic acid group.

Abstract: The present invention provides a process for easily preparing a vinylidene fluoride homopolymer comprising an I-form crystal structure at high purity by selecting a solvent, and the process for preparing the vinylidene fluoride homopolymer comprises not less than 70% by mass of I-form crystal structure, which is obtained by dissolving a vinylidene fluoride homopolymer having a number average degree of polymerization of 3 to 20 in a solvent consisting of an organic solvent having a dipole moment of not less than 2.8 alone or comprising the organic solvent in a part, thereafter, evaporating the solvent.

Abstract: The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base perfluoropolymers, where the talc comprises 3 percent to about 15 percent by weight of the composition. Each of the perfluoropolymers is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP) and perfluoroalkoxy (PFA) and any blend thereof, where hydrogen-containing fluoropolymers are absent from the composition. The one or more base perfluoropolymers are melt-processable at one or more elevated processing temperatures of at least about 600° F.

Abstract: Tensile strength after heat aging of articles molded from melt-fabricable perfluoropolymer is improved by incorporating polytetrafluoroethylene as dispersed submicrometer-size particles into the melt-fabricable perfluoropolymer.

Abstract: A rechargeable lithium battery includes a binder for a rechargeable lithium battery, and a positive active material composition. The binder for the rechargeable lithium battery includes a nitrile-based polymer nanoparticle and a fluorine-containing polymer nanoparticle.

Abstract: Aqueous dispersions on non-melt flowable PTFE and melt-fabricable perfluoropolymer are mixed together, followed by recovery of the resultant mixture of the dispersed particles of each of these polymers, and melt mixing of the resultant mixture of particles to obtain a blend in which the PTFE particles form the disperse phase and the perfluoropolymer forms the continuous phase, the melt mixing producing advantageous melt viscosities and the blend exhibiting advantageous physical properties even at high PTFE contents of about 30 wt %.

Abstract: The invention relates to a molded body consisting of plastic with a material thickness of at least 150 $g(m)m at any point. Said body contains a polymer mixture of an impact-resistance modified poly(meth)acrylate plastic, a polymethyl methacrylate matrix, elastomer particles contained in said matrix and a fluoropolymer. According to the invention, the fraction of the fluoropolymer in the mixture is between 30 and 95 wt. % and the polymer mixture of the impact-resistance modified poly(meth)acrylate plastic and the fluoropolymer is present in an outer layer with a continuous material thickness of at least 10 $g(m)m. The invention is characterized in that the impact-resistance modified poly(meth)acrylate plastic consists of between 20 and 70 wt. % poly(meth)acrylate matrix and between 30 and 80 wt. % elastomer particles.

Abstract: The present invention concerns a vulcanizable composition, vulcanized products produced from it, and their use in particular in the production of golf balls or roll coverings.