The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8178591 | Carbon dioxide blown low density, flexible microcellular polyurethane elastomers Microcellular polyurethane flexible foams having densities no greater than 0.3 g/cc which are suitable for use as lightweight shoe sole components are produced with carbon dioxide in an amount such that the polyurethane-forming mixture has a free rise density of fro... | 05/15/2012 |
| 8178204 | Acrylate-modified aspartates and gel coat compositions made therefrom A coating composition is provided. The composition comprises as component I, a) a polyaspartic acid ester comprising the reaction product of one more diamines, one or more difunctional acrylate-containing compounds and one or more maleic/fumaric acid esters; b) at l... | 05/15/2012 |
| 8164835 | Optical systems employing compliant electroactive materials The present invention provides optical systems, devices and methods which utilize one or more electroactive films to adjust an optical parameter of the optical device/system. ... | 04/24/2012 |
| 8134022 | Polyether carbonate polyols made via double metal cyanide (DMC) catalysis The present invention relates to a polyether carbonate polyol made by copolymerizing a starter molecule with carbon dioxide, at a pressure ranging from about 10 psia to about 2,000 psia, and an alkylene oxide, at a temperature ranging from about 50° C. to about 190... | 03/13/2012 |
| 8134014 | Preparation of uretdione polyisocyanates The invention relates to the use of specific pyridines as catalysts for the dimerization of isocyanates (uretdione formation) and a process for preparing polyisocyanates having a high content of uretdione groups. ... | 03/13/2012 |
| 8124665 | Decorative molded foams with good impact resistance and fire retardant properties This invention relates to fire-resistant, flexible, molded, medium density polyurethane foams. These foams typically have a density of from 10 to 30 pcf. The foams are the reaction product of a) at least one polyester polyol, b) at least one highly branched polyethe... | 02/28/2012 |
| 8119245 | Dual-cure coating compositions based on polyaspartates polyisocyanates and acrylate-containing compounds A radiation-curable coating composition is provided. The composition comprises a) an amino-functional polyaspartate; b) a (cyclo) aliphatic polyisocyanate; c) an acrylate-functional compound; and d) a photoinitiator. Substrates coa... | 02/21/2012 |
| 8114938 | Polyurethane dispersions for use in personal care products The invention relates to an aqueous polyurethane dispersion suitable for use in personal care products, the dispersed polyurethane comprising the reaction products of: A) a prepolymer according to the formula: | 02/14/2012 |
| 8114931 | Aqueous adhesive dispersions An aqueous polymer dispersion that includes a) a polyurethane dispersion having an average particle size of 60 to 350 nm and b) an aqueous silicon dioxide dispersion having a particle diameter of the SiO2 particles of 20 to 400 nm. The dispersion is prepa... | 02/14/2012 |
| 8110621 | Castor oil-based polyol emulsions A polyol emulsion of castor oil and monoepoxides is combined with methylenediphenyl diisocyanate (MDI) and cement to produce a polymer cement. ... | 02/07/2012 |
| 8110073 | Process for the preparation of aromatic amines Aromatic amines are produced by catalytic hydrogenation of aromatic nitro compounds. The reaction mixture generated by this hydrogenation is then worked up by distillation in a manner which makes it possible to substantially free the amine of water with increased en... | 02/07/2012 |
| 8106140 | Process for preparing low-viscosity allophanates containing actinically curable groups The present invention relates to a process for preparing low-viscosity reaction products of polyisocyanates containing activated, ethylenically unsaturated groups which react, with polymerization, on exposure to actinic radiation. ... | 01/31/2012 |
| 8097751 | Process for preparing polyisocyanates by the adiabatic phosgenation of primary amines A two-stage process for the preparation of organic isocyanates by reacting primary amines with phosgene in which: a) in a first stage, amine and phosgene are reacted in an adiabatically managed reaction, in which the temperature of reaction is restricted to values b... | 01/17/2012 |
| 8097676 | Polycarbonate molding compositions An impact modified thermoplastic molding composition comprising aromatic polycarbonate and/or polyester carbonate and a rubber-modified graft polymer prepared by the bulk, solution or bulk-suspension polymerization process is disclosed. The composition that is chara... | 01/17/2012 |
| 8097660 | Rigid polyurethane foams with low thermal conductivity and a process for their production Rigid closed-cell polyurethane foams with low k-factors are produced by reacting an organic polyisocyanate with an amine-based polyether polyol and a polyester polyol in the presence of a catalyst and a hydrofluorocarbon blowing agent, preferably, HFC-245fa. It is p... | 01/17/2012 |
| 8097658 | Process for the production of medium density decorative molded foams having good fire retardant properties with reduced mold times, fire retardant compositions and foams produced by this process Fire-resistant, medium density molded polyurethane foams which may be removed from a mold in substantially shorter times than previously possible are produced by the process of the present invention. These reduced de-mold times are achieved by including a solid flam... | 01/17/2012 |
| 8093783 | Electroactive polymer device The invention describes rolled electroactive polymer devices. The invention also describes employment of these devices in a wide array of applications and methods for their fabrication. A rolled electroactive polymer device converts between electrical and mechanical... | 01/10/2012 |
| 8092901 | Multi-layer weather-resistant, coloured panel A multilayer product characterized by its improved weatherability and mechanical properties is disclosed. The product contains a layer A containing a member selected from the group consisting of transparent thermoplastic material and a lacquer, the member containing... | 01/10/2012 |
| 8088880 | Nanoparticle-modified polyisocyanates The present invention relates to innovative, nanoparticle-modified polyisocyanates, a process for their preparation and to their use in coating compositions and adhesives. The process comprises the steps of 1) reacting A) polyisocyanates with B) alkoxysilanes, and s... | 01/03/2012 |
| 8079752 | Process and mixing unit for the preparation of isocyanates by phosgenation of primary amines The invention relates to a mixer reactor of the rotor-stator type. This mixer reactor comprises a substantially rotationally symmetric housing which has a distributing chamber, a mixing chamber, a front plate that modifies the cross-section of the housing between th... | 12/20/2011 |
| 8078547 | Method of calculating and displaying premium freight costs Methods for calculating and displaying premium freight costs are provided. The methods comprise the steps of: A) selecting a time period of interest; B) selecting all shipments occurring within the selected time period and indexing the shipments into a list; C) for ... | 12/13/2011 |
| 8071659 | Process for preparing low-viscosity allophanates containing actinically curable groups The present invention relates to a process for preparing low-viscosity reaction products of polyisocyanates containing activated groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation. ... | 12/06/2011 |
| 8067522 | Low viscosity, alkoxysilane-functional prepolymers and a process for their preparation The present invention relates to a process for preparing alkoxysilane-functional prepolymers by reacting A) 1.0 equivalent of a polyol component have a number average molecular weight of 3000 g/mol to 20,000 g/mol and containing on... | 11/29/2011 |
| 8063241 | Process for the preparation of toluene-diisocyanate The present invention relates to a process for the preparation of toluene-diisocyanate. In this process, toluenediamine is reacted with phosgene to give crude toluene-diisocyanate, the crude toluene-diisocyanate is purified by distillation, the distillation residue ... | 11/22/2011 |
| 8058861 | Miniature high-voltage power supplies The present invention provides a system comprising a high-voltage capacitive device and a power circuit electrically coupled to the capacitive device, wherein the power circuit is configured for stepping up a lower DC source voltage to a higher DC output voltage, wh... | 11/15/2011 |
| 8054566 | Optical lens displacement systems The present invention provides optical systems, devices and methods which utilize one or more electroactive polymer actuators to adjust an optical parameter of the optical device or system. ... | 11/08/2011 |
| 8042264 | Method of fabricating an electroactive polymer transducer The invention describes rolled electroactive polymer devices. The invention also describes employment of these devices in a wide array of applications and methods for their fabrication. A rolled electroactive polymer device converts between electrical and mechanical... | 10/25/2011 |
| 8034322 | Polyurethane dispersions based on polycarbonate polyols and suitable for use in personal care products The invention relates to a process for preparing an aqueous polyurethane dispersion suitable for use in personal care products, wherein the polyurethane is based on one or more polycarbonate polyols. ... | 10/11/2011 |
| 8030522 | Process for the production of toluene diisocyanate The invention relates to a process for the production of toluene diisocyanate, in which the crude toluenediamine obtained from the hydrogenation is purified and then phosgenated. The purification step reduces the total amount of cyclic ketones to less than 0.1% by w... | 10/04/2011 |
| 8029854 | Concrete repair process The present invention provides a process for repairing concrete involving filling one of a void, gap or seam in the concrete with a polyurethane sealant containing a silane terminated prepolymer (“STP”), and a catalyst, optionally, one or more of plasticizers, f... | 10/04/2011 |
| 8022200 | Process for the preparation of liquid, storage-stable organic isocyanates of low color number containing carbodiimide and/or uretonimine groups The invention relates to a process for the preparation of liquid, storage-stable isocyanate mixtures which are characterized by a low color number and which contain carbodiimide (CD) and/or uretonimine (UI) groups. This invention also relates to the isocyanate mixtu... | 09/20/2011 |
| 8003205 | Spray-applied polyurethaneurea composites based on polyisocyanate prepolymers containing soft-segments This invention relates to sprayable polyurethaneurea compositions, composite articles comprising at least one layer of these polyurethaneurea compositions and at least one layer of a polyurethaneurea foam forming composition, and to a process for the production of t... | 08/23/2011 |
| 7990022 | High-performance electroactive polymer transducers Transducers employing electroactive polymer films are disclosed. Such transducers include an open frame and at least two layers extending within the frame, where the layers form a concave shape. ... | 08/02/2011 |
| 7977501 | Polyether carbonate polyols made via double metal cyanide (DMC) catalysis The present invention relates to a polyether carbonate polyol made by copolymerizing a starter molecule with carbon dioxide, at a pressure ranging from about 10 psia to about 2,000 psia, and an alkylene oxide, at a temperature ranging from about 50° C. to about 190... | 07/12/2011 |
| 7977415 | Impact resistant, flame retardant thermoplastic molding composition A thermoplastic molding composition characterized by its flame retardance and impact strength is disclosed. The composition contains (A) linear aromatic (co)polycarbonate, (B) a graft (co)polymer having core-shell morphology, the shell containing polymerized alkyl(m... | 07/12/2011 |
| 7972676 | Process for the production of fibre-reinforced composite parts The invention relates to a process for the production of fiber-reinforced composite components in which an outer film is bonded with a layer containing fiber-reinforced polyurethane, characterised in that a) first an elastic interm... | 07/05/2011 |
| 7960446 | Low-viscosity allophanates containing actinically curable groups A process for preparing binders containing allophanate groups which contain, at the oxygen atom of the allophanate group that is bonded via two single bonds, organic radicals with activated groups capable of participating in a polymerization reaction with ethylenica... | 06/14/2011 |
| 7956098 | Coating compositions containing ethylenically unsaturated polyurethanes as binders The present invention relates to a binder-containing coating composition, which may be cured by free radical polymerization, wherein the binder resins contain A) the reaction product of i) one or more polyisocyanates with ii) a hydroxyl component containing i... | 06/07/2011 |
| 7952261 | Electroactive polymer transducers for sensory feedback applications Electroactive polymer transducers for sensory feedback applications are disclosed. ... | 05/31/2011 |
| 7951896 | Process for the production of NCO prepolymers that are stable to sedimentation, and their use The present invention relates to NCO-terminated prepolymers that are stable to sedimentation, to a process for the production of these NCO-terminated prepolymers, and to the production of polyurethanes from these NCO-terminated polymers. ... | 05/31/2011 |