Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7388035 | Method for preparing poly(2,5-benzimidazole) A method for preparing poly(2,5-benzimidazole) whereby 3,4-diaminobenzoic acid is polymerized using a dehydrating reagent containing P2O5 and CX3SO3H where X is H or F. The poly(2,5-benzimidazole) has good proton conductiv... | 06/17/2008 |
| 7302391 | Methods and apparatus for performing speech recognition over a network and using speech recognition results Techniques for generating, distributing, and using speech recognition models are described. A shared speech processing facility is used to support speech recognition for a wide variety of devices with limited capabilities including business computer systems, persona... | 11/27/2007 |
| 7288603 | Polybenzazole compound having sulfonic acid group and/or phosphonic acid group, resin composition containing the same, resin molding, solid polymer electrolyte membrane, solid polymer electrolyte membrane/electrode assembly and method of preparing assembly An object of the present invention is to obtain a novel polymeric material capable of forming a solid polymer electrolyte excellent not only in processability, solvent resistance and durability/stability but also in ion conductivity by introducing sulfonic acid grou... | 10/30/2007 |
| 7288619 | Fluorinated polyether polyamine and method of making the same A composition comprises a condensation product of an amine-reactive fluorinated polyether and a polyamine. The compositions may be in dispersed in water. ... | 10/30/2007 |
| 7238752 | High molecular weight cationic polymers obtained by post-polymerization crosslinking reaction The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-... | 07/03/2007 |
| 7205369 | High molecular weight cationic polymers obtained by post-polymerization crosslinking reaction The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-... | 04/17/2007 |
| 7084186 | Crosslinkable resin compositions Crosslinkable resin compositions that are cured easily by irradiation with active energy beams and particularly cured quickly with ultraviolet ray are provided, which comprises a polymer containing a maleimido group and an ethylenically unsaturated group. The compos... | 08/01/2006 |
| 7074880 | Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same A preparation process of polyimide aerogels that composed of aromatic dianhydrides and aromatic diamines or a combined aromatic and aliphatic diamines is described. Also descried is a process to produce carbon aerogels derived from polyimide aerogel composed of a ri... | 07/11/2006 |
| 7060782 | Process for a two stage melt polymerization for the production of polybenzimidazole having an improved solid state polymerization A process for the production of high molecular weight polybenzimidazole by one: providing a first reaction vessel; charging the reaction vessel with at least one aromatic hydrocarbon tetraamine, and a heterocylic ring making up the dicarboxylic component; heating th... | 06/13/2006 |
| 7038007 | Process for a continuous polymerization for the production of high molecular weight polybenzimidazole A process for a single-stage melt polymerization for the production of a high molecular weight polybenzimidazole which comprises the steps of: providing a reaction vessel having a means for agitation and a means for vacuum; charging the reaction vessel with reactant... | 05/02/2006 |
| 6987163 | Modified polybenzimidazole (PBI) membranes for enhanced polymer electrochemical cells The invention relates to a modified polybenzimidazole (PBI), membranes that are fabricated from these polymers, and their use in electrochemical applications. These membranes have high ionic conductivity and are suitable for solid polymer electrolytes in electrochem... | 01/17/2006 |
| 6979749 | Catalytic process for the production of 3,3′, 4,4′-tetraminobiphenyl This invention relates to a process for the production of 3,3′,4,4′-tetraminobiphenyl (TAB) of formula (1) from non-carcinogenic raw materials, employing Suzuki type biaryl coupling as the key step. More particularly, it relates to a three steps process for the ... | 12/27/2005 |
| 6979721 | Substituted cyclohexene endcaps for polymers with thermal-oxidative stability This invention relates to polyimides having improved thermal-oxidative stability, to the process of preparing said polyimides, and the use of polyimide prepolymers in the preparation of prepregs and composites. The polyimides are particularly useful in the preparati... | 12/27/2005 |
| 6908983 | Synthesis of high solids resins from amine terminated polyamides The present invention contemplates a process for forming polyaminoamide polymers formed by the reaction of a dibasic acid/ester with excess amounts of an amine; the intermediate polymer resulting therefrom; a process for synthesizing effective, high solids resins re... | 06/21/2005 |
| 6887400 | Water-soluble polyaminoamides comprising 1,3-diimines as sunscreen agents A UV-protective composition comprising a water-soluble polyaminoamide containing 1,3-diimine groups, wherein the polyaminoamide containing 1,3-diimine groups absorbs ultraviolet light radiation having a wavelength of about 200 nm to about 420 nm, and methods of trea... | 05/03/2005 |
| 6872800 | Hyperbranched copolyamide, composition based on said hyperbranched copolyamide and method for obtaining same The invention relates to hyperbranched copolyamides (HBPAs), to their production and to their use as additives, in particular as melt viscosity modifiers in thermoplastic polymer compositions. This copolyamide is obtained by a reaction between a monomer (I): ... | 03/29/2005 |
| 6835799 | Intrinsically gel-free, randomly branched polyamide The invention relates to a randomly branched polyamide comprising at least units derived from: 1. AB monomers, 2. at least one compound I, being a carboxylic acid (Av) having a functionality v≧2 or an amine (Bw) havi... | 12/28/2004 |
| 6828412 | Degradable polymers A polymer comprising: a polymeric backbone comprising at least one unit having the structure (I), wherein R-R4 comprise groups selected from the group consisting of H, C1-C12 alkyl, C6-C18 aryl, C7-C | 12/07/2004 |
| 6809127 | Radiation curable compositions with enhanced adhesion A radiation-curable composition is comprised of the reaction product of an amine-terminated (poly)aminoamide and a mono-(meth)acrylate or a poly-(meth)acrylate. The radiation-curable composition is a liquid at room temperature and does not undergo substantial volume... | 10/26/2004 |
| 6790925 | In-situ preparation of polyaspartic ester mixtures The present invention relates to polyaspartate mixtures containing a) 5 to 50 equiv. %, based on the total equivalents of aspartate groups, of a polyoxypropylene polyaspartate corresponding to the formula wherein ... | 09/14/2004 |
| 6762277 | Method of manufacturing N-carboxyamino acid anhydride and polyamino acid A method of manufacturing a new N-carboxyamino acid anhydride and polyamino acid using a simple process operation. The method for manufacturing N-carboxyamino acid anhydride comprising reacting α-amino acid with di-tert-butyltricarbonate. The method for manu... | 07/13/2004 |
| 6750312 | Process for the preparation of supports for solid phase synthesis A method for preparing a solid support material for carrying out a chemical reaction, said method comprising the following steps: (i) reacting an amino functionalised solid material with a carboxylic acid having at least two similarly protected amino groups t... | 06/15/2004 |
| 6677427 | Enzyme-catalyzed polyamides and compositions and processes of preparing and using the same A polyamide, the enzymatic reaction product of at least one polyamine and diester, and processes for preparing and using the same. In addition, processes for preparing and using the enzymatic reaction product as creping adhesives and wet strength resins t... | 01/13/2004 |
| 6667384 | Methyl acrylate-diamine based polyamide resins and processes for producing the same The present invention contemplates poly(aminoamide) pre-polymers, polyamide polymers, a multi-step process for the synthesis of these pre-polymers and polymers using acrylates and at least one monomer containing at least two primary amines, and the resins... | 12/23/2003 |
| 6593449 | Method for producing polybenzimidazole sintered compact A method of producing a sintered article of polybenzimidazole by using a polybenzimidazole resin is disclosed. This method comprises the steps of: filling a mold with a polybenzimidazole resin; after closing the mold so that the polybenzimidazole resin ca... | 07/15/2003 |
| 6593448 | Nanometric TiO2-catalyzed production of polyamides (Co)polyamides, for example the polyamides 6 and 66, are prepared via the improvedly catalyzed polycondensation of (co)polyamide-forming (co)monomers, even in the presence of normally catalyst-inhibiting matting agents (e.g., microparticulate TiO2 | 07/15/2003 |
| 6444776 | Organic polymers The present invention relates to novel crosslinkable amphiphilic block copolymers of formula ##STR1## wherein the variables are as defined in the claims, a process for their preparation and their use for the manufacture of mouldings. The block copoly... | 09/03/2002 |
| 6365706 | Process for production of polyasparagine and the high nitrogen content polymer formed thereby A method for the production of polyasparagine is provided wherein the polyasparagine is prepared by ammonolysis of polysuccinimide in liquid ammonia, acting both as a solvent and as a reactant, wherein the polysuccinimide can be any polysuccinimide, such ... | 04/02/2002 |
| 6323306 | Preparation of water-soluble cross-linked cationic polymers High molecular weight, water-soluble, cross-linked cationic polymers are prepared by reacting amine-functionalized cationic base polymers, in which the monomer units of the base polymer contain from about 0.05 to about 5.0% amine functionalized monomer un... | 11/27/2001 |
| 6320017 | Polyamide oligomers The present invention relates to new polyamide oligomers. These oligomers can be conjugated to lipids, nucleic acids, peptides, proteins, etc. The oligomer-lipid conjugates can be used to form liposomes, virusomes, micelles, etc., optionally containing dr... | 11/20/2001 |
| 6310173 | Batch process for producing polyamides from aminonitriles The batch process for producing a polyamide by reaction of a mixture comprising at least one aminonitrile, and optionally monomers useful for polyamide production, with water, comprises the following steps: (1) reacting the mixture with water at a temperature ... | 10/30/2001 |
| 6297345 | Polyamide having excellent stretching properties A polyamide with excellent stretching properties is disclosed, which comprises 50 to 99.8 mol % of a unit derived from a lactam and/or an aminocarboxylic acid, 0.1 to 25 mol % of a unit derived from a dicarboxylic acid, and 0.1 to 25 mol % of a unit deriv... | 10/02/2001 |
| 6288208 | Highly branched oligomers, process for their preparation and applications thereof The present invention relates to a highly branched polyamide oligomer of the general formula (I) as hereinabove defined, to the process for preparing and branched oligomers and to different uses thereof. As well known to the man skilled in the art, the im... | 09/11/2001 |
| 6262223 | Triamine-modified polymides having improved processability and low melt flow viscocity Addition-cured polyimides that contain the reaction product of an aromatic triamine or trianhydride analogue thereof, a reactive end group such as 5-norbornene-2, 3-dicarboxylic acid, ester derivatives of 5-norbornene-2,3-dicarboxylic acid, anhydride deri... | 07/17/2001 |
| 6225437 | Sizing agents of enhanced performance capabilities Provided are alkenyl and/or alkyl succinimides formed from at least one alkenyl or alkyl succinic anhydride and at least one aliphatic amine having one or two primary amino groups in the molecule. These succinimides are characterized in that each alkenyl ... | 05/01/2001 |
| 6222006 | Wet strength thermosetting resin formulations and polyaminamide polymers suitable for use in the manufacture of paper products An aqueous formulation of a high solid content fully functional thermosettable wet strength resin designed for use in the manufacture of paper products is disclosed. The wet strength resin is the product of reaction of an epihalohydrin and an end-capped p... | 04/24/2001 |
| 6180752 | Polyasparaginic acid homopolymers an copolymers, biotechnical production and use thereof The invention relates to the production of polyaspartic acid homo- and copolymers by biotechnological processes and to the use of the resulting products (for influencing the crystallization or agglomeration behavior of sparingly soluble salts or solids in... | 01/30/2001 |
| 6174988 | Use of polyamino acid salts in water-borne adhesive applications This invention relates to an adhesive composition which comprises (a) an adhesive carrier, and (b) an adhesively effective amount of a polyamino acid salt selected from the group consisting of polyaspartic acid salts, polyglutamic acid salts, and copolyme... | 01/16/2001 |
| 6156874 | Multidimensionally crosslinkable rigid-rod benzobisazole polymer fibers Rod-like aromatic heterocyclic polymers having repeating units of the formula --(--Q--Ar--)m --(--Q--Ph--)n)-- where Q is ##STR1## X is --O--, --S--, or --NH--; m is 0.05 to 1.0; n is 1.0-m; Ph is 1,4-phenylene; Ar is ##STR... | 12/05/2000 |
| 6069228 | Process for preparing polyamides Disclosed is a process for the preparation of polyamide polymers via prepolymer formation in a reactor system comprising a reactor, flasher and separator, crystallization of the prepolymer under controlled temperature conditions and the subsequent convers... | 05/30/2000 |
