Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8163864 | Sulfonated polyarylene compounds, membrane material made therefrom, method for the production thereof and use The invention relates to the field of polymer chemistry and relates to sulfonated polyarylene compounds such as can be used for example in ion exchange membranes in fuel cells, as well as a method for the production thereof and the use thereof. The object of the pre... | 04/24/2012 |
| 8158742 | Deoxybenzoin-based anti-flammable polyphosphonate and poly(arylate-phosphonate) copolymer compounds, compositions and related methods of use Deoxybenzoin-phosphonate and other copolymer compounds, compositions and related methods. ... | 04/17/2012 |
| 8084568 | Poly(arylene ether) copolymer having cation-exchange group, process of manufacturing the same, and use thereof The present invention relates to a poly(arylene ether) copolymer having an ion exchange group, particularly a positive ion exchange group, a method for manufacturing the same, and use thereof. In the poly(arylene ether) copolymer having the ion exchange group accord... | 12/27/2011 |
| 8071710 | Thermoplastic polyphenoxyquinoxaline and method of preparing the same The manufacture of polyetherquinoxalines may be accomplished by polymerization of quinoxaline and related monomers with a bisphenol under aromatic nucleophilic substitution reaction conditions. A method of manufacture includes contacting a substituted or unsubstitut... | 12/06/2011 |
| 7981996 | Method of making bisimides The present invention provides a method for preparing relatively insoluble bisimides under conditions which afford high imidization reaction rates and which permit the monitoring and adjustment of reactant stoichiometry at any stage of the reaction. The bisimides pr... | 07/19/2011 |
| 7947800 | Poly(aryl ether) with pendent sulfonic acid phenyl groups A sulfonated poly(aryl ether) (SPAE) having a poly(aryl ether) (PAE) main chain and a sulfonated phenyl group pendent from the main chain are useful in proton exchange membranes (PEMs), particularly for fuel cells. The pendent phenyl group can provide an easily sulf... | 05/24/2011 |
| 7935777 | Polycarbonate compositions Polycarbonate compositions are disclosed. The compositions comprise a polycarbonate polymer (A) having repeating units derived from 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP); a polycarbonate polymer (B) which is different from polymer (A); an impact mod... | 05/03/2011 |
| 7906608 | Nitrogenated aromatic compound, process for production of the same, polymer, and proton conductive membrane A nitrogen-containing aromatic compound is represented by Formula (1). A polymer is obtained by polymerizing the compound. wherein X is an atom or a group selected from halogen atoms other than fluorine and —OSO2 | 03/15/2011 |
| 7863400 | Deoxybenzoin-based anti-flammable polyphosphonate and poly(arylate-phosphonate) copolymer compounds, compositions and related methods of use Deoxybenzoin-phosphonate and other copolymer compounds, compositions and related methods. ... | 01/04/2011 |
| 7816483 | Amine functionalized polymer A functionalized polymer includes a polymer chain and, bonded thereto, a functional group having the general formula —NQOR1 where R1 is a hydrogen atom or —CH2Z where Z is a hydrogen atom or a substituted or unsubstituted aryl, a... | 10/19/2010 |
| 7786245 | Process for preparing polyarylene ether ketone A process for preparing a polyarylene ether ketone, comprising: a) reacting an aromatic dihalogen compound with a bisphenol and/or a halophenol in the presence of alkali metal carbonate and/or alkaline earth metal carbonate in a hi... | 08/31/2010 |
| 7723458 | Method for high density data storage and read-back An approach is presented for designing a polymeric layer for nanometer scale thermo-mechanical storage devices. Cross-linked polyaryletherketone polymers are used as the recording layers in atomic force data storage devices, giving significantly improved performance... | 05/25/2010 |
| 7425603 | Polymers, polymer compositions, and method of preparation A polymer comprising structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1, R2 and R3 are independently at each occurrence selected from the group consistin... | 09/16/2008 |
| 7407609 | Membranes and their manufacture Membranes comprising an aromatic ether ketone polymer (e.g. polyetherketone) in sheet or hollow fibre form are made by preparing at least a 12 wt % solution of the polymer in a solvent which is chemically inert to the polymer (e.g. concentrated sulphuric acid); form... | 08/05/2008 |
| 7396895 | Branched polyarylene ethers and processes for the preparation thereof Disclosed is a process for preparing branched polyarylene ether polymers by (A) providing a reaction mixture comprising (i) a polyfunctional phenol compound of the formula Ar(OH)x wherein x≧3 and wherein Ar is an aryl moiety or an alkylaryl moiety, prov... | 07/08/2008 |
| 7393914 | Polyethersulfone compositions Novel polyethersulfone compositions have been discovered which incorporate structural subunits derived from sulfonated bis(halophenyl)sulfones, dihydroxy terphenyls, and/or bis(hydroxyphenyl)pyridines. The sulfonated polyethersulfones show promise as materials for u... | 07/01/2008 |
| 7378484 | Toughness-increased phenolic resin and preparation thereof A phenolic resin that increases its toughness by polydimethylsiloxane and a process of preparing the same is provided. Polydimethylsiloxane is added as a coupling agent in a γ-glycidoxypropyltrimethoxysilane-modified phenolic resin to improve the compatibility betw... | 05/27/2008 |
| 7368068 | Sulfonic group-containing polyarylene block copolymer, process for production thereof, solid polymer electrolyte and proton conductive membrane The present invention provides a sulfonic group-containing polyarylene block copolymer superior to the perfluoroalkylsulfonic acid polymers in cost, conductive properties and proccessability, a process for producing the copolymer, a solid polymer electrolyte and a p... | 05/06/2008 |
| 7361291 | Antistatic composition Polymer compositions comprising a) a polymer substrate selected from the group consisting of the polyolefins, polyesters, polyamides and polylactic acids and b) a combination of i) at l... | 04/22/2008 |
| 7348395 | Synthesis of oligomeric cyanate esters A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate este... | 03/25/2008 |
| 7342085 | Synthesis of oligomeric cyanate esters A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate este... | 03/11/2008 |
| 7326439 | Apparatus for depositing droplets An apparatus for depositing droplets on a substrate is disclosed. The apparatus includes a support for the substrate, a droplet ejection assembly which includes a pumping chamber, a controller and a source of static pressure to maintain the total pressure in the pum... | 02/05/2008 |
| 7315250 | Electrical fluid activated switch An electrical field activated switch system includes a fluid container 14 having an aperture formed in a sidewall thereof. The floor of the primary tray 22 is positioned entirely beneath the fluid container and a secondary tray is positioned entirely w... | 01/01/2008 |
| 7307138 | Polymer electrolytes and process for their preparation A sulfonated aromatic polyether ketone of the formula (II) [Ar—O—Ar′—CO—Ar′—O—Ar—CO—Ar″—CO—] (II) in which from 1% to 100% of the O-phenylene-CO units are substituted with an SO3M group and sulfonated an... | 12/11/2007 |
| 7282471 | Personal care compositions with glycerin and hydroxypropyl quaternary ammonium salts A personal care composition is provided formulated with glycerin and a moisturization enhancing agent which is a salt of structure AB, wherein A is a cationic charged component, B is an anionic charged component, and A has at least one quaternized nitrogen atom and ... | 10/16/2007 |
| 7279198 | Method for extrusion coating a lightweight web The specification discloses a method for extrusion coating a lightweight web. According to the method, a length of a lightweight web along with a length of a carrier web is fed to an extruder with the lightweight web positioned atop the carrier web. A polymer film i... | 10/09/2007 |
| 7265196 | Controlled crosslinked polyaryletherketone material with improved properties and a process by producing the same The present invention relates to a controllable crosslinking polyaryletherketone with improved properties such as stiffness, heat resistance, and stability as shown by any one of the following structures: ... | 09/04/2007 |
| 7259201 | Flame retardant thermoplastic films and methods of making the same A film can comprise greater than or equal to about 95 wt % thermoplastic resin and about 0.001 wt % to about 5.0 wt % sulfonate salt, based on a total weight of the film, and have a UL-94 rating of VTM-0, wherein the thermoplastic resin is selected from the group co... | 08/21/2007 |
| 7253253 | Method of removing contaminants from plastic resins A method for removing contaminants from synthetic resin material containers using a first organic solvent system and a second carbon dioxide system. The organic solvent is utilized for removing the contaminants from the synthetic resin material and the carbon dioxid... | 08/07/2007 |
| 7244501 | Fiber reinforced thermoplastic sheets with surface coverings A composite sheet material that includes at least one porous core layer including a thermoplastic material and from about 20 weight percent to about 80 weight percent fibers based on a total weight of the porous core layer, and at least one skin covering a surface o... | 07/17/2007 |
| 7217780 | Polyether ketone and method of producing the same There are disclosed, a polyether ketone having a primary particle size of 50 μm or less; and a method of producing a polyether ketone by a desalting polycondensation, which contains a step of conducting a polymerization reaction under a condition of deposition of t... | 05/15/2007 |
| 7208551 | Polyaryleneetherketone phosphine oxide compositions incorporating cycloaliphatic units for use as polymeric binders in thermal control coatings and method for synthesizing same Polyaryleneetherketone triphenylphosphine oxide compositions incorporating cycloaliphatic units are provided which may be used as a polymeric binders in thermal control coatings for use in space environments. A method is also provided for synthesizing the polyarylen... | 04/24/2007 |
| 7205376 | Processes for the production of cumene, polyetherimides, and polycarbonates A method for the manufacture of polycarbonate by combining methane and inlet water to produce methanol, converting the methanol to propylene, gasoline aromatics, and gasoline olefins, converting the propylene and gasoline olefins to hydrogen, first benzene, and tolu... | 04/17/2007 |
| 7202324 | Perfluorostyrene compound, and coating solution and optical waveguide device using the same Disclosed is a fluorine compound having perfluorostyrene introduced at a terminal thereof, as represented in the following Formula 1, and a coating solution and an optical waveguide device using the same, characterized in that the introduction of perfluorostyrene re... | 04/10/2007 |
| 7189591 | Process for producing light-emitting semiconductor device The invention provides a process for producing a light-emitting semiconductor device, which comprises: (1) forming a polycarbodiimide-containing layer on a light takeout side of a light-emitting semiconductor element; and (2) forming irregularities on the surface of... | 03/13/2007 |
| 7186454 | Dielectric films and materials therefor A material for dielectric films is a polymerizable composition containing an organic solvent, and an adamantanepolycarboxylic acid derivative represented by following Formula (1): wherein X is hydrogen atom, a hy... | 03/06/2007 |
| 7183017 | Composite polymer electrolytes for proton exchange membrane fuel cells Thin films of inexpensive composite polymer electrolyte membranes containing inorganic cation exchange materials including various clay based fillers are fabricated by solution casting. The membranes exhibit higher ion exchange capacity, proton conductivity and/or l... | 02/27/2007 |
| 7169878 | Diamines, polyimide precursors and polyimides produced by using the diamines, and liquid crystal aligning agents A diamine compound represented by the formula (1): wherein R1 is a trivalent organic group, each of X1 and X2 is a bivalent organic group, X3 is an alkyl or fluoroalkyl... | 01/30/2007 |
| 7165881 | Methods and apparatus for high-shear mixing and reacting of materials Methods and apparatus for high shear reacting and/or mixing of moving fluid streams of materials employ an interdiffusing and reacting zone formed in the space between two stationary surfaces, the surfaces being spaced apart a maximum distance of the sum of the thic... | 01/23/2007 |
| 7157603 | Method for the separation of oligomeric N-substituted (meth)acrylamide compounds and conjugates thereof which are reversibly thermally precipitating The method of separating reversibly thermally precipitable oligomeric N-substituted (meth)acrylamides and conjugates thereof from aqueous solution includes thermally precipitating the oligomeric N-substituted (meth)acrylamides and the conjugates thereof from an aque... | 01/02/2007 |
