Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 8168742 | Crosslinkable fluorinated aromatic prepolymer and its uses To provide a crosslinkable fluorinated aromatic prepolymer which is capable of forming a cured product having a low relative permittivity, high heat resistance, low birefringence and high flexibility, and its uses. A crosslinkable fluorinated aromatic prepoly... | 05/01/2012 |
| 8058383 | Arylene-fluorinated-sulfonimide ionomers and membranes for fuel cells The preparation of aromatic sulfonimide polymers useful as membranes in electrochemical cells is described. ... | 11/15/2011 |
| 7842775 | Development and characterization of novel proton conducting aromatic polyether type copolymers bearing main and side chain pyridine groups Featured are novel heterocycle substituted hydroquinones, aromatic copolymers and homopolymers bearing main and side chain polar pyridine units. These polymers exhibit good mechanical properties, high thermal and oxidative stability, high doping ability and high con... | 11/30/2010 |
| 7786244 | Development and characterization of novel proton conducting aromatic polyether type copolymers bearing main and side chain pyridine groups Featured are novel heterocycle substituted hydroquinones, aromatic copolymers and homopolymers bearing main and side chain polar pyridine units. These polymers exhibit good mechanical properties, high thermal and oxidative stability, high doping ability and high con... | 08/31/2010 |
| 7754843 | Proton conducting aromatic polyether type copolymers bearing main and side chain pyridine groups for use in proton exchange membrane fuel cells New aromatic polyether type copolymers bearing main chain pyridine and side chain pyridine or pyrimidine units, which exhibit good mechanical properties, high thermal and oxidative stability, high doping ability and high conductivity values. The polymers are useful ... | 07/13/2010 |
| 7585928 | Multifunctional monomers containing bound mesogenic poragen forming moieties and polyarylene compositions therefrom A compound (monomer) comprising i) one or more dienophile groups (A-functional groups), ii) one or more ring structures comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional groups), and iii) one or more chemically bound mesogen... | 09/08/2009 |
| 7511112 | Aromatic polymer, film, electrolyte membrane and separator An aromatic polymer containing aromatic polyamide structural units and aromatic carbohydrazide structural units at a specific ratio is disclosed. A film having a high Young's modulus, high elongation at break and low moisture absorption can be formed from such an ar... | 03/31/2009 |
| 7439275 | Anion-conducting polymer, composition, and membrane Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support e... | 10/21/2008 |
| 7402651 | Macromolecular compounds with a core-shell structure Macromolecular compounds having a core-shell structure are described. Also described is a process for preparing such macromolecular compounds, and their use as semiconductors in electronic structural elements. ... | 07/22/2008 |
| 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 |
| 7390578 | Aryl-substituted poly-p-arylenevinylenes Aryl-substituted poly-p-arylenevinylenes comprising a repeating unit of the formula (C1), in which one or more of the unsubstituted aromatic carbon atoms may be replaced by nitrogen atoms, —OCm and —OCn ... | 06/24/2008 |
| 7371800 | Derivatized novolak polyhydroxystyrene from hydroxyphenylmethylcarbinol A process for preparing derivatized poly(4-hydroxystryrene) having a novolak type structure which comprises the steps of (i) supplying a solution of methanol containing 4-hydroxyphenylmethylcarbinol, (ii) subjecting said solution to an acid catalyzed displacement re... | 05/13/2008 |
| 7368520 | Crosslinked compositions comprising a poly(arylene ether) and a nonlinear optical chromophore, and devices incorporating same Crosslinked polymer blends comprising a poly(arylene ether) and a nonlinear optical chromophore. Also featured are electro-optic devices incorporating these blends. ... | 05/06/2008 |
| 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 |
| 7365146 | Substituted polyphenylenes via supported transition metal catalysis Substituted polyphenylenes and methods for producing such substituted polyphenylenes using supported transition metal catalysis are provided. ... | 04/29/2008 |
| 7351243 | High strength bioresorbables containing poly-glycolic acid Polymer compositions comprising poly-glycolic acid (PGA) or a functional derivative thereof with a tensile strength of at least 1200 MPa are disclosed. Processes suitable for manufacturing said compositions are also described, comprising rendering PGA into an amorph... | 04/01/2008 |
| 7348072 | Light-emitting polymer and organoelectroluminescent display using the same A spirofluorene-type of a blue light-emitting polymer including an indenofluorene repeating unit having a spiroanthracene structure, and an organic electroluminescent display using the polymer. The brightness and efficiency property of the organic electroluminescent... | 03/25/2008 |
| 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 |
| 7329708 | Functionalized poly(arylene ether) composition and method A curable composition includes an olefinically unsaturated monomer and a poly(arylene ether) having two polymerizable groups and an intrinsic viscosity of about 0.05 to about 0.30 deciliters per gram. The composition exhibits an improved combination of high flow dur... | 02/12/2008 |
| 7323533 | Conjugated polymers containing spirobifluorene units and the use thereof The present invention relates to novel conjugated polymers comprising spirobifluorene units and their use in optoelectronic devices, preferably in, for example, displays based on polymeric organic light-emitting diodes. ... | 01/29/2008 |
| 7323534 | Phenol-formaldehyde resole resins, method of manufacture, methods of use, and articles formed therefrom A composition is disclosed, which comprises a hydroxyaromatic-aldehyde resole resin comprising an aldehyde and a hydroxyaromatic compound, modified with a urea-aldehyde condensate. The composition has improved premix stability, improved cure efficiency, comparable t... | 01/29/2008 |
| 7312282 | Process of preparation of block copolymers and the block copolymers prepared therefrom Processes for preparing block copolymers and the block copolymers prepared therefrom comprising at least two types of homoblock, all belonging to the polysulfone family, wherein each of the said homoblocks has an identical or different molecular weight of at least 1... | 12/25/2007 |
| 7307137 | Low dielectric constant materials and methods of preparation thereof The present invention is directed to low dielectric polymers and to methods of producing these low dielectric constant polymers, dielectric materials and layers, and electronic components. In one aspect of the present invention, an isomeric mixture of thermosetting ... | 12/11/2007 |
| 7301002 | Sulfonated polyphenylene polymers Improved sulfonated polyphenylene compositions, improved polymer electrolyte membranes and nanocomposites formed there from for use in fuel cells are described herein. The improved compositions, membranes and nanocomposites formed there from overcome limitations of ... | 11/27/2007 |
| 7296576 | Polymers for enhanced solubility of nanomaterials, compositions and methods therefor Poly(aryleneethynylene) polymers, poly(ferrocenylaryleneethynylene) polymers and poly(ferrocenylethynylene) polymers having properties particularly useful for solubilizing nanomaterials and for effecting subsequent re-solubilization of a solid polymer-solubilized na... | 11/20/2007 |
| 7291692 | Polyarylene oxide and method of producing the same A method of producing a polyarylene oxide comprising a step of oxidative polymerization of a monomer represented by the general formula (1) in an organic solvent in the presence of a transition metal compound, wh... | 11/06/2007 |
| 7288617 | Conjugated polymers containing spirobifluorene units and fluorene units, and the use thereof The present invention relates to novel polymers which comprise spirobifluorene and fluorine units of the formulae (I) and (II) and may further comprise additional structural elements which may have charge transport properties, hole transport properties and/or electr... | 10/30/2007 |
| 7285616 | Aromatic polymer, method for producing the same and uses thereof There is provided a polymer electrolyte which shows excellent characteristics as proton conductive membrane of fuel cells and the like. This polymer electrolyte contains an aromatic polymer which is characterized by having a super strong acid group in a side chain. | 10/23/2007 |
| 7282598 | Synthetic methods for preparing procyanidin oligomers Processes are disclosed for the production of linear and branched procyanidin oligomers having “n” procyanidin monomeric units where n is 2 to 18. The processes include coupling protected, activated monomers with an unprotected monomer to produce a partially pro... | 10/16/2007 |
| 7279524 | Method for doping a polymer A method for forming a conjugated polymer which is doped by a dopant includes the steps of (a) adding a doping agent comprising a dopant moiety to a solution containing the conjugated polymer or a precursor thereof and, optionally, a second polymer, the dopant moiet... | 10/09/2007 |
| 7273919 | High heat polyethersulfone compositions High heat polyethersulfone compositions are provided which possess unexpectedly high glass transition temperatures. The polyethersulfone compositions comprise structural units derived from phthalimide bisphenols such as 3,3-bis(4 -hydroxyphenyl)-N-phenylphthalimide,... | 09/25/2007 |
| 7268240 | Synthetic methods for polyphenols A process is disclosed for the production of polyphenol oligomers having n polyphenol monomeric units, n being an integer from 2-18. The process includes coupling of a protected polyphenol, having protected phenolic hydroxyl groups, with a C-4 functionalized polyphe... | 09/11/2007 |
| 7268193 | Branched polyphenylene polymers Branched polyarylene polymers are provided comprising monovalent endcappers, divalent linear units, and polyvalent branching units. The composition of the polymers is controlled by adjusting the ratio of the three types of monomers. ... | 09/11/2007 |
| 7258932 | Polymeric fluorescent substrate and polymer light-emitting device using the same A polymeric fluorescent substance exhibiting visible fluorescence in the solid state, having polystyrene reduced number average molecular weight of 1×103 to 1×108, and comprising one or more repeating units of following formula (1), | 08/21/2007 |
| 7255936 | Polymeric fluorescent substance and polymer light-emitting device using the same Provided is a polymeric fluorescent substance comprising a copolymer which has a substituent containing a specific aromatic amine structure below in the side chain, wherein X1 is a divalent hydrocarbon... | 08/14/2007 |
| 7247261 | Nonlinear optical material with nano-sized dendrimer structure The present invention relates to a non-linear optical material having a dendrimer structure; and, more particularly, to a non-linear optical material having organic chromophores at the ends and formed based on ester linkages and/or ether linkages. Since the non-line... | 07/24/2007 |
| 7244855 | Synthesis of oligomeric epicatechin and catechin-derived procyanidins Various processes are disclosed for preparing procyanidin oligomers having (4,8)-interflavan linkages. In an improved process, a tetra-O-protected-epicatechin or -catechin monomer or oligomer is coupled with a protected, C-4 alkoxy-activated-epicatechin or -catechin... | 07/17/2007 |
| 7235192 | Capped poly(arylene ether) composition and method A method of preparing a capped poly(arylene ether) resin includes reacting a capping agent with a blend of two or more poly(arylene ether) resins having different intrinsic viscosities. Cured compositions prepared from these capped poly(arylene ether) resins exhibit... | 06/26/2007 |
| 7220818 | Noncovalent functionalization of nanotubes Nanotubes are treated with poly{(5-alkoxy-m-phenylenevinylene)-co-[(2,5-dioctyloxy-p-phenylene)vinylene]} (PAmPV) polymers and derivatives thereof to provide noncovalent functionalization of the nanotubes which increases solubility and enhances other properties.... | 05/22/2007 |
