Patent application number | Description | Published |
20130069001 | Polyarylene Sulfide/Liquid Crystal Polymer Alloy and Compositions Including Same - Polyarylene sulfide/liquid crystal polymer alloys are described as are methods of forming the polyarylene sulfide/liquid crystal polymer alloys. The polyarylene sulfide/liquid crystal polymer alloys are formed according to a melt processing method that includes melt processing a polyarylene sulfide with a reactively functionalized disulfide compound and a liquid crystal polymer in a one or two step process. The reactively functionalized disulfide compound is added in a stoichiometric amount to react with a portion of the polyarylene sulfide. The melt processing forms a polyarylene sulfide/liquid crystal polymer copolymer that is a compatibilizer in the alloy. The polyarylene sulfide/liquid crystal polymer alloys may provide low chlorine content products having excellent strength characteristics. | 03-21-2013 |
20130071638 | Overmolded Composite Structure for an Electronic Device - An overmolded composite structure that contains a metal component and a resinous component adhered to a surface thereof is provided. The resinous component is formed from a thermoplastic composition that contains at least one polyarylene sulfide and at least one mineral filler. The present inventors have discovered that the nature and relative concentration of the polyarylene sulfides, mineral fillers, and/or other materials in the thermoplastic composition can be selectively tailored so that the resulting resinous component has a coefficient of linear thermal expansion and/or color that is similar to the metal component. | 03-21-2013 |
20130072629 | Low Halogen Content Disulfide Washed Polyarylene Sulfide - Methods for forming a low chlorine content washed polyarylene sulfide are described. Methods include washing a polyarylene sulfide that includes aryl halide endgroups with a solution that includes a disulfide compound. The solution can also include a catalyst and an organic solvent. During the disulfide wash, a nucleophilic substitution reaction occurs between the disulfide compound and aryl halides endgroups of the polyarylene sulfide. The nucleophilic substitution reaction is carried out at conditions to prevent chain scission of the polyarylene sulfide that includes the aryl halide endgroups. Compositions and products formed with the low chlorine content disulfide washed polyarylene sulfide are also described. | 03-21-2013 |
20130072630 | Low Chlorine Fiber Filled Melt Processed Polyarylene Sulfide Composition - Melt processed polyarylene sulfide compositions are described as are methods of forming the melt processed polyarylene sulfide compositions. The melt processed polyarylene sulfide compositions are formed according to a melt processing method that includes melt processing a mixture that includes a starting polyarylene sulfide, a disulfide compound and a filler. The melt processed polyarylene sulfide compositions may provide low chlorine content products having excellent strength characteristics. | 03-21-2013 |
20130081850 | Fire-Resisting Thermoplastic Composition for Plenum Raceways and Other Conduits - A conduit that contains an elongate member that defines a hollow passageway is provided. The conduit may be used to convey electricity (e.g., jacket of a communication cable, raceway for protecting a communication cable, etc.), fluids (e.g., pipes), etc. In one embodiment, for example, the conduit may be a raceway for use in a plenum of a building structure. Regardless of the type of conduit, at least a portion of the elongate member is formed from a thermoplastic composition that contains a polyarylene sulfide and fire-resisting system. Due in part to the specific nature and concentration of these components, the present inventors have discovered that the resulting thermoplastic composition may have a relatively high melting temperature. | 04-04-2013 |
20130084415 | Electrical Conduit Containing a Fire-Resisting Thermoplastic Composition - An electrical conduit that contains a jacket that defines a hollow passageway is provided. At least a portion of the jacket is formed from a thermoplastic composition that contains a polyarylene sulfide and fire-resisting system. Due in part to the specific nature and concentration of these components, the present inventors have discovered that the resulting thermoplastic composition may have a relatively high melting temperature, such as from about 200° C. to about 500° C. | 04-04-2013 |
20130090416 | HIGH TEMPERATURE POLYMER ALLOY CONTAINING STABILIZERS - The present disclosure is generally directed to a resin composition containing a mixture of high temperature polymers and at least one stabilizer. The stabilizer serves to prevent the polymers from adversely interfering with each other during melt processing. In one embodiment, the high temperature polymers present in the composition may comprise a mixture of an aromatic polyester polymer and a polyarylene sulfide polymer. The stabilizer comprises a phosphite stabilizer. The composition produces molded articles having better thermal stability and reduced mold deposits. | 04-11-2013 |
20130119317 | Method for Forming a Liquid Crystalline Thermoplastic Composition - A method for forming a liquid crystalline thermoplastic composition is provided. The method comprises blending at least one thermotropic liquid crystalline polymer and a plurality of fibers within an extruder. The extruder contains at least one rotatable screw received within a barrel (e.g., cylindrical barrel) and defines a feed section and a melting section located downstream from the feed section along the length of the screw. Relatively long fibers are initially supplied to the feed section of the extruder, but at a location downstream from the liquid crystalline polymer so that the polymer is still in a solid state when it initially contacts the fibers. In this manner, the present inventors have discovered that the polymer can act as an abrasive agent for reducing the length of the fibers. | 05-16-2013 |
20130121682 | Compact Camera Module - A thermoplastic composition for use in a compact camera module is provided. The thermoplastic composition contains a liquid crystalline polymer and a plurality of fibers. The volume average length of the fibers in the thermoplastic composition is selectively controlled according to the present invention so that it is within a certain range, such as from about 80 to about 250 micrometers. The fibers also have a narrow length distribution. That is, at least about 70% by volume of the fibers have a length within a certain range. Through the use of a liquid crystalline polymer and fibers of a certain weight average length and narrow length distribution, the present inventors have discovered that the resulting thermoplastic composition is able to achieve a desirable combination of strength and surface smoothness, which enables it to be uniquely suited for a compact camera module. | 05-16-2013 |
20130122274 | Low Naphthenic Liquid Crystalline Polymer Composition for Use in Molded Parts with a Small Dimensional Tolerance - A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a combination of flow modifiers is provided. More particularly, one of the flow modifiers is a hydroxy-functional compound that contains or more hydroxyl functional groups. Without intending to be limited by theory, it is believed that the hydroxyl functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. Aromatic dicarboxylic acids are also employed as a flow modifier in the thermoplastic composition. Again, without intending to be limited by theory, it is believed that such acids can combine smaller chains of the polymer together after they have been cut by hydroxy-functional compounds. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced. | 05-16-2013 |
20130122758 | Fine Pitch Electrical Connector and a Thermoplastic Composition for Use Therein - A thermoplastic composition for use in a fine pitch electrical connector is provided. The thermoplastic composition contains a liquid crystalline polymer and a plurality of fibers. The volume average length of the fibers in the thermoplastic composition is selectively controlled according to the present invention so that it is within a certain range, such as from about 80 to about 250 micrometers. The fibers also have a narrow length distribution. That is, at least about 70% by volume of the fibers have a length within a certain range. Through the use of a liquid crystalline polymer and fibers of a certain weight average length and narrow length distribution, the present inventors have discovered that the resulting thermoplastic composition is able to achieve a desirable combination of strength and flowability, which enables it to be uniquely suited for the walls of a fine pitch connector. | 05-16-2013 |
20130155597 | Molded Part for a Portable Electronic Device - A molded part that has a relatively small thickness so that it can be readily employed in portable electronic devices is provided. The molded part is formed from a thermoplastic composition that contains a polyarylene sulfide and an aromatic amide oligomer. Due to the improved crystallization rate, the thermoplastic composition can be molded at lower temperatures to still achieve the same degree of crystallization. In addition to minimizing the energy requirements of the molding operating, the use of lower temperatures can also decrease the production of “flash” normally associated with high temperature molding operations. The composition may also possess good viscosity properties that allow it to be readily molded into parts of a variety of different shapes and sizes. | 06-20-2013 |
20130157033 | Nucleating System for Polyarylene Sulfide Compositions - A nucleating system for a thermoplastic composition that contains a polyarylene sulfide is provided. The nucleating system includes a combination of an inorganic crystalline compound and an aromatic amide oligomer. The present inventors have discovered that the combination of these different types of nucleating agents result in excellent crystallization properties (e.g., rate of crystallization). Due to the improved crystallization rate, the thermoplastic composition can be molded at lower temperatures to still achieve the same degree of crystallization. In addition to minimizing the energy requirements of the molding operating, the use of lower temperatures can also decrease the production of “flash” normally associated with high temperature molding operations. The composition may also possess good viscosity properties that allow it to be readily molded into parts of a variety of different shapes and sizes. | 06-20-2013 |
20130158212 | Low Temperature Injection Molding of Polyarylene Sulfide Compositions - A method for injection molding a thermoplastic composition that contains a polyarylene sulfide and an aromatic amide oligomer is provided. Due to the improved crystallization properties imparted by the oligomer, the present inventors have discovered that the thermoplastic composition can be molded at lower temperatures to still achieve the same degree of crystallization. In addition to minimizing the energy requirements for the molding operation, such low mold temperatures may be accomplished using heating mediums that are less corrosive and expensive than some conventional techniques. | 06-20-2013 |
20130227759 | Fabrics Containing a Blend of Polyarylene Sulfide and Textile Fibers - A fabric that contains a blend of textile and polyarylene sulfide fibers is provided. At least a portion of the textile fibers, polyarylene sulfide fibers, or a combination thereof are coated with an emulsion copolymer that is crosslinked. The copolymer composition is cured after it is applied to the fibers to initiate the formation of crosslink bonds between the emulsion copolymer and create a three-dimensional network that is capable of coating and encapsulating the fibers. It is believed that this three-dimensional network is able to physically entrap disperse additives when applied to the fibers. Still further, the present inventors have discovered that the emulsion copolymer can uniformly coat the fibers and thus readily receive the additive, which eliminates the need for high temperatures and/or pressures during a dyeing process, for example, and can also result in a relatively uniform coating of the additive on the fibers. | 09-05-2013 |
20130227800 | Polyarylene Sulfide Fibers Containing an Emulsion Copolymer Coating - A fibrous material that contains polyarylene sulfide fibers coated with an emulsion copolymer is provided. The emulsion copolymer that is coated onto the polyarylene sulfide fibers is crosslinked. For example, the copolymer may contain a reactive co-monomer that acts as a crosslinking agent. Alternatively, a separate crosslinking agent may be combined with the emulsion copolymer. In either case, the resulting copolymer composition is cured after it is applied to the fibers to initiate the formation of crosslink bonds between the emulsion copolymer and create a three-dimensional network that is capable of coating and encapsulating the fibers. Without intending to be limited by theory, it is believed that this three-dimensional network is able to physically entrap disperse dyes when applied to the fibers. | 09-05-2013 |
20130249357 | Housing for a Portable Electronic Device - An injection molded housing for a portable electronic device is provided. The housing contains a thermoplastic composition that includes a polyarylene sulfide melt processed in the presence of a disulfide compound and a filler. Without intending to be limited by theory, it is believed that the disulfide can undergo a chain scission reaction with the starting polyarylene sulfide to lower its melt viscosity, which can lead to decreased attrition of the filler and thus improved mechanical properties. Due to this ability to reduce viscosity during melt processing, the present inventors have discovered that relatively high molecular weight polyarylene sulfides can be fed to the extruder with little difficulty. | 09-26-2013 |
20130269819 | Pipe Section Having Bonded Composite Barrier Layer - Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body formed from a metal material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding and bonded to the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a continuous fiber reinforced thermoplastic material. Such pipe sections may be lightweight and flexible while exhibiting improved strength characteristics. | 10-17-2013 |
20130269977 | Polyarylene Sulfide Composition Including a Functionalized Siloxane Polymer and a Non-Aromatic Impact Modifier - Polyarylene sulfide compositions are described as are methods of forming the polyarylene sulfide compositions. The polyarylene sulfide compositions are formed by melt processing polyarylene sulfide, a reactively functionalized siloxane polymer and a non-aromatic impact modifier. The non-aromatic impact modifier is, e.g., an ethylene-based copolymer or terpolymer or a silicone elastomer. The compositions exhibit good strength and heat resistance characteristics and can be utilized in forming a variety of products such as automotive components and electrical components. | 10-17-2013 |
20130273280 | Continuous Fiber Reinforced Polyarylene Sulfide - A continuous fiber composite is described and methods for forming the continuous fiber composite. The continuous fiber composite includes a plurality of unidirectionally aligned continuous fibers embedded within a polyarylene sulfide polymer. The continuous fiber composite includes a very high loading of continuous fibers, for instance greater than about 40% by weight of the continuous fiber composite. The continuous fiber composite is formed by reacting a starting polyarylene sulfide with a reactively functionalized disulfide compound in a melt processing unit. Reaction between the starting polyarylene sulfide and the reactively functionalized disulfide compound leads to formation of a reactively functionalized polyarylene sulfide. Upon embedding of the continuous fibers into the reactively functionalized polyarylene sulfide, the reactivity of the polyarylene sulfide can enhance adhesion between the polyarylene sulfide polymer and the fibers. | 10-17-2013 |
20130273281 | Polyarylene Sulfide Composition Including a Silane Coupling Agent and a Silicone Elastomer - Polyarylene sulfide compositions are described as are methods of forming the polyarylene sulfide compositions. The polyarylene sulfide compositions are formed by melt processing polyarylene sulfide, a silane coupling agent and a silicone elastomer. The silane coupling agent is, e.g., an amino silane coupling agent and the silicone elastomer can be a poly(dimethyl siloxane). The compositions exhibit good strength and heat resistance characteristics and can be utilized in forming a variety of products such as pipes and houses, automotive components and electrical components. | 10-17-2013 |
20130273283 | Ultraviolet Radiation Stabilized Polyarylene Sulfide Composition - Disclosed is a UV stabilized polyarylene sulfide composition, methods of forming the composition, and UV stabilized products that can be formed of the composition. The UV stabilized polyarylene sulfide composition can include a reactively functionalized polyarylene sulfide polymer in conjunction with a UV stabilizer. The reactivity of the polyarylene sulfide polymer is formed during melt processing via reaction of a reactively functionalized disulfide compound with a starting polyarylene sulfide. The reactivity of the polyarylene sulfide can encourage interaction between the polyarylene sulfide polymer and the UV stabilizer, which can improve dispersion of the UV stabilizer throughout the composition and improve miscibility between the polyarylene sulfide polymer and the UV stabilizer. Products can incorporate high concentrations of UV stabilizer and/or can be formed to very small cross sectional dimensions without phase separation between the UV stabilizer and the polyarylene sulfide. | 10-17-2013 |
20130273286 | Polyarylene Sulfide Components for Heavy Duty Trucks - Components for heavy duty trucks are described that exhibit high strength and flexibility. The components are formed from a polyarylene sulfide that exhibits high strength and flexibility characteristics. Methods for forming the components are also described. Formation methods include dynamic vulcanization of a polyarylene sulfide composition that includes an impact modifier dispersed throughout the polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier throughout the composition. The heavy duty truck components can include tubular member such as pipes and hoses that can be utilized in exhaust systems, charge air systems, urea tanks, fuel systems, and so forth. | 10-17-2013 |
20130273287 | Blow Molded Thermoplastic Composition - Components formed of blow molded thermoplastic compositions are described. The blow molded thermoplastic compositions exhibit high strength and flexibility. Methods for forming the thermoplastic compositions are also described. Formation methods include dynamic vulcanization of a composition that includes an impact modifier dispersed throughout a polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier. The crosslinking agent reacts with the impact modifier to form crosslinks within and among the polymer chains of the impact modifier. The compositions can exhibit excellent physical characteristics at extreme temperatures and can be used to form, e.g., tubular member such as pipes and hoses and fibers. | 10-17-2013 |
20130273288 | Polyarylene Sulfide for Oil and Gas Flowlines - Flowlines for use in oil and gas applications are described. The flowlines include a barrier layer that includes polyarylene sulfide composition that exhibits high strength and flexibility characteristics. Methods for forming the flowlines are also described. Formation methods include dynamic vulcanization of a polyarylene sulfide composition that includes an impact modifier dispersed throughout the polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier throughout the composition. The flowlines can include production fluid flowlines, supporting fluid flowlines, bundled flowlines, etc. and can be utilized as risers, pipelines, jumpers, and the like. | 10-17-2013 |
20130273289 | Automotive Fuel Lines Including A Polyarylene Sulfide - A fuel line comprising a thermoplastic composition is described. The thermoplastic compositions exhibit high strength and flexibility and can be used to form one or more layers of single layer or multi-layer fuel lines. Methods for forming the thermoplastic compositions are also described. Formation methods include dynamic vulcanization of a composition that includes an impact modifier dispersed throughout a polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier. The crosslinking agent reacts with the impact modifier to form crosslinks within and among the polymer chains of the impact modifier. The compositions can exhibit excellent physical characteristics at extreme temperatures. | 10-17-2013 |
20130273290 | Dynamically Vulcanized Polyarylene Sulfide Composition - Polyarylene sulfide compositions are described that exhibit high strength and flexibility. Methods for forming the polyarylene sulfide compositions are also described. Formation methods include dynamic vulcanization of a polyarylene sulfide composition that includes an impact modifier dispersed throughout the polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier throughout the composition. The crosslinking agent reacts with the impact modifier to form crosslinks within and among the polymer chains of the impact modifier. The compositions can exhibit excellent physical characteristics at extreme temperatures and can be used to form, e.g., tubular member such as pipes and hoses and fibers. | 10-17-2013 |
20130273799 | Polyarylene Sulfide Fibers and Composites Including the Fibers - Polyarylene sulfide fibers and products that incorporate the polyarylene sulfide fibers are described as are methods of forming the fibers and products. The polyarylene sulfide fibers can incorporate a reactively functionalized polyarylene sulfide that can provide improved compatibility between the polyarylene sulfide and other materials, including both additives to the polyarylene sulfide composition that is used to form the fibers and external materials that may be located adjacent to the fibers in a composite. | 10-17-2013 |
20130291991 | Pipe Section Having Polyarylene Sulfide Composition Barrier Layer - Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a polyarylene sulfide composition. The polyarylene sulfide composition includes a polyarylene sulfide and a crosslinked impact modifier. Such pipe sections exhibit high strength characteristics and flexibility as well as resistance to degradation, even in extreme temperature environments, while maintaining desirable processing characteristics. | 11-07-2013 |
20130291993 | Pipe Section Having Unbonded Composite Barrier Layer - Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body formed from a polymer material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding and unbonded from the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a continuous fiber reinforced thermoplastic material. Such pipe sections may be lightweight and flexible while exhibiting improved strength characteristics. | 11-07-2013 |
20130323447 | Fiber Reinforced Shaped Articles and Process for Making Same - Blow molded articles are made from a polymeric composition containing a mixture of polyphenylene sulfide resins. For instance, the polymeric composition may contain a linear polyphenylene sulfide resin combined with a branched polyphenylene sulfide resin. The composition can further contain a reinforcing agent, such as glass fibers, a polytetrafluoroethylene polymer, a polyphenylene oxide polymer, a silane coupling agent, and/or an impact modifier. Compositions made according to the present disclosure can have relatively high near zero shear rate melt strengths while also having high shear rate melt viscosities and high engineering stresses at a high percent elongations, making the compositions amenable to extrusion and molding processes. Compositions made according to the present disclosure are particularly well suited to molding articles with a complex shape. When producing blow molded articles, for instance, the composition provides better control over wall thickness while having improved interior surface smoothness at higher throughput and extrusion rates. | 12-05-2013 |
20130324675 | Low Emission Polyoxymethylene - Low VOC emission polyoxymethylene and compositions and products that incorporate the polyoxymethylene are described. The polyoxymethylene is end capped with compound that can prevent degradation of the polymer and subsequent emission of VOC degradation products such as formaldehyde. The end-capped polyoxymethylene can include an inorganic linkage within the polymer backbone that is the reaction product of a terminal hydroxyl group of the polyoxymethylene and a hydrolyzable group of the compound. Also disclosed are products as may be formed from the low VOC emission polyoxymethylene. | 12-05-2013 |
20130327437 | HIGH TEMPERATURE CONDUIT HAVING A COMPLEX, THREE-DIMENSIONAL CONFIGURATION - Molded articles are disclosed having a complex three-dimensional shape. In one embodiment, the molded articles comprise tubular members formed through blow molding that have multiple linear sections separated by curved sections. The curved sections can include multiple angular displacements in multiple planes. The tubular members are molded from a polymer composition containing a high temperature polymer, such as a polymer having a melting point of greater than about 280° C., such as greater than about 290° C. In one embodiment, the tubular member includes at least three angular displacements of from about 60° to about 120°, such as from about 70° to about 110°. | 12-12-2013 |
20140067000 | Implantable Medical Device Containing Fibers Formed from a Liquid Crystalline Polymer - An implantable medical device that employs one or more fibers formed from a polymer composition that contains at least one liquid crystalline polymer is provided. In addition to being highly inert and biocompatible, the rigid rod-like structure of liquid crystalline polymers can allow them to be particularly well suited for implantable devices. Apart from the benefits from the polymer itself, the fibers are formed in such a manner so that they are generally flexible, but yet still possess a sufficient degree of strength so that they can be effectively employed in implantable medical devices. | 03-06-2014 |
20140120282 | Multi-Layered Co-Injection Molded Article - A multi-layered, co-injection molded article is disclosed that includes a barrier layer that is formed from a thermotropic liquid crystalline polymer and disposed adjacent to a protective layer, which is formed from a base polymer (e.g., olefinic polymer). | 05-01-2014 |
20140134419 | LIQUID CRYSTALLINE POLYMER COMPOSITION FOR MELT-EXTRUDED SHEETS - A melt-extruded sheet form thermoforming applications is provided. The sheet is formed from a polymer composition containing one or more thermotropic liquid crystalline polymers. The specific nature of the polymer or blend of polymers is selectively controlled so that the resulting polymer composition possesses both a low viscosity and high melt strength. | 05-15-2014 |
20140135469 | LIQUID CRYSTALLINE POLYMER COMPOSITION FOR FILMS - A film formed from a polymer composition containing one or more thermotropic liquid crystalline polymers is provided. The specific nature of the polymer or blend of polymers is selectively controlled so that the resulting polymer composition possesses both a low viscosity and high melt strength. The present inventor has discovered that this unique combination of thermal properties results in a composition that is both highly melt processible and stretchable, which allows the resulting film to be oriented to a degree greater than previously thought possible. | 05-15-2014 |
20140177155 | Overmolded Composite Structure for an Electronic Device - An overmolded composite structure that contains a metal component and a resinous component adhered to a surface thereof is provided. The resinous component is formed from a thermoplastic composition that contains at least one polyarylene sulfide and at least one mineral filler. The present inventors have discovered that the nature and relative concentration of the polyarylene sulfides, mineral fillers, and/or other materials in the thermoplastic composition can be selectively tailored so that the resulting resinous component has a coefficient of linear thermal expansion and/or color that is similar to the metal component. | 06-26-2014 |
20140178662 | Multilayer Polyarylene Sulfide Composite - A multilayer composite is described as well as methods for forming the multilayer composite and products that incorporate the multilayer composite. The multilayer composite includes a continuous fiber composite first layer and a second layer that is formed from the melt directly on the continuous fiber composite. The continuous fiber composite includes a plurality of unidirectionally aligned carbon fibers embedded within a polymer composition that includes a first polyarylene sulfide. The second layer includes a second polymer composition that can be the same as or different from the first polymer composition. Products can include electronic devices such as computers, cellular telephones, e-readers, etc. as well as panels, such as interior panels in vehicles. | 06-26-2014 |
20140243485 | High Performance Polymer Composition with Improved Flow Properties - A polymer composition that contains at least one high performance polymer and at least one aromatic amide oligomer is provided. The oligomer can serve as a flow aid that lowers the overall viscosity of the polymer matrix under shear. | 08-28-2014 |
20140350156 | Low Temperature Injection Molding of Polyarylene Sulfide Compositions - A method for injection molding a thermoplastic composition that contains a polyarylene sulfide and an aromatic amide oligomer is provided. Due to the improved crystallization properties imparted by the oligomer, the present inventors have discovered that the thermoplastic composition can be molded at lower temperatures to still achieve the same degree of crystallization. In addition to minimizing the energy requirements for the molding operation, such low mold temperatures may be accomplished using heating mediums that are less corrosive and expensive than some conventional techniques. | 11-27-2014 |
20140364562 | High Strength Thermotropic Liquid Crystalline Powder - A wholly aromatic thermotropic liquid crystalline polymer and compositions including the liquid crystalline polymer are described. The polymer composition can include the liquid crystalline polymer and a fibrous filler, e.g., a chopped glass or milled glass fibrous filler. The compositions are capable of exhibiting excellent mechanical properties. The liquid crystalline polymer provides desirable characteristics with the incorporation of little or no naphthenic acids in the polymer backbone. | 12-11-2014 |
20150112019 | LOW NAPHTHENIC LIQUID CRYSTALLINE POLYMER COMPOSITION FOR USE IN MOLDED PARTS WITH A SMALL DIMENSIONAL TOLERANCE - A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a combination of flow modifiers is provided. More particularly, one of the flow modifiers is a hydroxy-functional compound that contains or more hydroxyl functional groups. Without intending to be limited by theory, it is believed that the hydroxyl functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. Aromatic dicarboxylic acids are also employed as a flow modifier in the thermoplastic composition. Again, without intending to be limited by theory, it is believed that such acids can combine smaller chains of the polymer together after they have been cut by hydroxy-functional compounds. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced. | 04-23-2015 |
20150225547 | Molded Part for Use in a Portable Electronic Device - A polymer composition containing a polyarylene sulfide, a disulfide compound, and inorganic fibers is provided. The polymer composition has an aspect ratio of from about 1.5 to about 10, wherein the aspect ratio is defined as the cross-sectional width of the fibers divided by the cross-sectional thickness of the fibers. | 08-13-2015 |
20150225567 | Toughened Polyarylene Sulfide Composition - A polymer composition that comprises a polyarylene sulfide, inorganic fibers, impact modifier, and a functionalized coupling system is provided. The functionalized coupling system includes a disulfide compound and an organosilane compound. The weight ratio of organosilane compounds to disulfide compounds is from about 0.1 to about 10. | 08-13-2015 |
20150274965 | Laminate for a Printed Circuit Board - A laminate that contains a film on which one or more conductive elements are disposed is provided. The film is formed from a polymer composition that contains an aromatic polyester and an additive that is “laser-activatable” in the sense that it can be activated by a laser direct structuring (“LDS”) process. By selectively controlling the nature of the polymer composition and its respective components, the present inventors have discovered that a film can be readily formed that has good heat resistance, yet is also capable of exhibiting good adhesion to the conductive elements due to the fact that such elements can be integrally formed on the film using an LDS process. | 10-01-2015 |
20160053106 | Polyaryletherketone Composition - A polymer composition that contains a polyaryletherketone and a liquid crystalline polymer that includes repeating units derived from naphthenic hydroxycarboxylic acids, naphthenic dicarboxylic acids, or a combination thereof in an amount of more than about 15 mol. % of the polymer is provided. | 02-25-2016 |
20160053107 | Composition Containing a Polyaryletherketone and Low Naphthenic Liquid Crystalline Polymer - A polymer composition that contains a polyaryletherketone and a liquid crystalline polymer that includes repeating units derived from naphthenic hydroxycarboxylic acids, naphthenic dicarboxylic acids, or a combination thereof in an amount of about 15 mol. % or less of the polymer is provided. The composition optionally contains reinforcing fibers (e.g., glass fibers) in an amount of no more than about 10 wt. %. | 02-25-2016 |
20160109040 | Pipe Section having Polyarylene Sulfide Composition Barrier Layer - Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a polyarylene sulfide composition. The polyarylene sulfide composition includes a polyarylene sulfide and a crosslinked impact modifier. Such pipe sections exhibit high strength characteristics and flexibility as well as resistance to degradation, even in extreme temperature environments, while maintaining desirable processing characteristics. | 04-21-2016 |