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7504475 |
Process for a two stage melt polymerization for the production of polybenzimidazole
A process is presented for the production of high molecular weight polybenzimidazole, in two steps. Step one: provide a first reaction vessel and charge it with at least one aromatic hydrocarbon...
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7465782 |
Method for making polybenzobisoxazole containing fiber
A method of making polybenzobisoxazole containing fiber by use of a non-polybenzobisoxazole polymer, hydroxylating the polymer, forming the polymer into a fiber and heating the fiber wherein ring...
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7465781 |
Method for making polybenzobisoxazole containing polymer
A method of making polybenzobisoxazole containing polymer by use of a non-polybenzobisoxazole polymer, hydroxylating the polymer, forming a solidified polymer and heating the solidified polymer...
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7408018 |
Elastomeric functional biodegradable copolyester amides and copolyester urethanes
The invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers are based on α-amino acids and possess physical, chemical...
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7138483 |
Monomers, conjugated polymers and electronic devices using such polymers
The energy levels (HOMO, LUMO) of the conjugated polymer are tuned independently, so that an energy match on both sides of the device can be accomplished while keeping the emission color in the...
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7064176 |
Coating material for electronic components
The invention relates to novel polyhydroxyamide compounds that, in the form of their oxazoles, ane suited as a coating material, particularly for electronic components. The invention also relates...
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7060783 |
Diamine compound polymer having condensed aromatic group
The present invention provides a diamine compound polymer and a method for producing the diamine compound polymer. The diamine compound polymer of the present invention has a condensed aromatic...
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7056988 |
Polymer compound, process for producing the same, molded article and process for producing the same
A polymer compound contains a cyclic structure represented by the following general formula (1):
wherein each of X and Y represent an alkylene group or the like, where X and Y may be the same...
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7045241 |
Proton conductive solid polymer electrolyte and method for producing the same
A monomer to produce polybenzimidazole is dissolved in polyphosphoric acid. For example, polysulfated phenylene sulfonic acid (acidic group-possessing polymer) is further dissolved in this...
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6998464 |
Method for producing a solution consisting of a polymer containing recurrent azole units, solutions produced according to said method and use of the same
The present invention relates to a method of preparing a solution of a polymer comprising recurring azole units, which comprises dissolving a sufficiently dried polymer comprising recurring azole...
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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...
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6979719 |
Coating composition comprising a compound comprising at least one bicyclo-orthoester group and at least one other functional group
The invention pertains to a coating composition comprising a compound comprising at least one bicyclo-orthoester group and at least one other functional group. The invention also comprises a...
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6916919 |
Isolation of DNA molecules
The present invention relates to a process for separating nucleic acid molecules, preferably open circular and supercoiled plasmid DNA and RNA molecules from each other, comprising the steps of...
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6828412 |
Degradable polymers
A polymer comprising: a polymeric backbone comprising at least one unit having the structure (I), wherein R-R 4 comprise groups selected from the group consisting of H, C 1 -C 12 alkyl, C 6 -C 18...
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6824949 |
Polybenzoxazole precursors, photoresist solution, polybenzoxazole, and process for preparing a polybenzoxazole precursor
There are disclosed polybenzoxazole precursors which can be processed by centrifugal techniques, which can be cyclized to polybenzoxazoles on substrates without difficulty, and which after...
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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...
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6670442 |
Hot melt adhesives based on polyamides
Hot melt adhesives are prepared using thermoplastic polyamides derived from polymerized fatty acid components. The adhesives are particularly useful for bonding nonpolar substrates such as...
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6605658 |
Stabilizing mixtures for organic polymers comprising a pyrazolone, an organic phosphite or phosphonite and a hindered phenol
Stabilizing mixtures for organic polymers comprising: a) at least one compound belonging to the group of pyrazolones; b) at least one compound belonging to the group of organic phosphites or...
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6576687 |
Wet-strength agent with low DCP content
The invention relates to a novel process for the preparation of polycondensate solutions based on polyamidoamine/epichlorohydrin resins that gives products having a very low content of organic...
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6500912 |
Epoxy resin system
A curable epoxy composition comprises an epoxy resin having at least 1.5 epoxy groups per molecule and an amine-terminated polyamide. The liquid amine-terminated polyamide is prepared by reacting a...
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6395399 |
Flexible printed substrate
A flexible printed substrate is constituted of metallic foil and provided thereon a polyimide layer which is produced by forming a film of a polyamic acid varnish on the metallic foil, followed by...
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6350305 |
Selected polymeric furanone magenta colorants
A polymeric furanone magenta colorant is disclosed that contains a furanone magenta chromophore having a furanone adduct, the adduct containing at least one alkoxylated phenyl radical, the...
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6348562 |
Synthetic polyamides
A process of increasing the melt processing of synthetic polyamides, in particular pigmented and/or filled synthetic polyamide, by adding thereto an additive having the formula (I) wherein R 1 ...
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6340719 |
Crosslinking process
A process for crosslinking a melt-processed polymer composition comprises the steps of (a) forming a polymerizable mixture comprising (i) at least one monoethylenically-unsaturated monomer or...
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6294645 |
Dry-strength system
The invention relates to resin systems useful for imparting dry-strength to paper without substantially increasing the paper's wet-strength wherein the resin system comprises a cationic component...
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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...
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6218452 |
Dyeability or mass coloration of synthetic polyamide
1. Synthetic polyamide comprising one or more of the following compounds: a) a compound having at least one sterically hindered amino group, [hereinafter referred to as compounds a)]; or b) a...
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6150460 |
Curable compositions containing novel polyfunctional crosslinking agents
Novel polyfunctional glyoxylated compounds and compositions containing the same are disclosed which are particularly suitable for use as crosslinking components in curable compositions and also...
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6136944 |
Adhesive of epoxy resin, amine-terminated polyamide and polyamine
The present invention relates to a flexible industrial adhesive composition which effectively bonds thermoplastic polymer substrates and substrates having low stiffness such as fabric, rubbers and...
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6075082 |
Cross-linked polymide binders for ceramics manufacture
A method for binding ceramic materials in aqueous media is disclosed. The method utilizes water-soluble cross-linked polyamides prepared by condensation polymerization for binding various classes...
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6072023 |
Polyamides from dimer and trimer acid esters and methods for their preparation
Polyamides and process for their preparation comprising either A) epoxidizing an unsaturated or partially hydrogenated fatty acid glyceride; B) transesterifying the epoxidized glyceride with...
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6034204 |
Condensation products of basic amino acids with copolymerizable compounds and a process for their production
Condensation products of basic amino acids with copolymerizable compounds which are obtainable by condensing (a) a basic amino acid selected from the group consisting of lysine, arginine,...
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6034207 |
Polymers of hexafluoropropene oxide and process of making
A hexafluoropropene oxide polymer of formula (1) having a dispersity Mw/mn of up to 1.10 is useful as a raw material for liquid rubber. In formula (1), R is --COF, --I, --Br, --CH 2 OH, --CH 2 ...
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6028141 |
Polyfunctional crosslinking agents and curable compositions containing the same
Novel polyfunctonal glyoxylated compounds and compositions containing the same are disclosed which are particularly suitable for use as crosslinking components in curable compositions and also find...
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5962629 |
Amine-terminated polyamide in oil-in-water emulsion
An epoxy resin composition containing a) an epoxy resin, b) a liquid amine terminated polyamine curing agent prepared by condensing an aminoalkylpiperazine and a dicarboxylic acid, and (c) water....
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5959070 |
Rigid rod and ladder polymers; a process for making said polymers; a process of producing light using said polymers; and light emitting devices employing said polymers
A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and...
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5936046 |
Epoxy resin with monoglycidyl-capped aryl amidopolyamine
There is provided a curing agent composition for epoxy resins and two component curable epoxy resin compositions. The curing agent is made by reacting at least a b) substituted aryl amidopolyamine...
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5932688 |
Polybenzimidazole material with low metallic concentration and a process for production thereof
An improved polybenzimidazole wherein the total concentration of metals other than alkali metal and alkaline earth metals is 10 ppm or less. The resulting polybenzimidazole is industrially useable...
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5922801 |
Polyamide binders for ceramics manufacture
A method for binding ceramic materials in aqueous media is disclosed. The method utilizes water-soluble polyamides prepared by condensation polymerization for binding various classes of ceramic...
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5919892 |
Polyamic acids and methods to convert polyamic acids into polyimidebenzoxazole films
This invention relates to polyamic acids and to methods for converting polyamic acid into polyimidebenzoxazole polymers. The polyamic acids are prepared by reacting a dianhydride with a...
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5917004 |
Weather-resistant polyamides and method of their production
The invention is relative to weather-resistant polyamides and to methods of their production in which the polymerization or polycondensation of the polyamide-forming monomers (I) is carried out in...
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5902876 |
Polybenzimidazole compounds in solution and a process for the preparation thereof
Improved process for producing a polybenzimidazole compound in solution by dissolving a fully dried polybenzimidazole of the following general formula (1) or (2) in N,N-dimethylacetamide of a...
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5886130 |
Polyphenylene co-polymers
A new class of polyarylene co-polymers include repeating units comprising one or more arylene units having the general formula (--Ar--/--Y--) n , where Y is a divalent group chosen from nil, --Z--,...
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5877270 |
Water solvent extraction degreasing method and molded products produced therewith
A water solvent extraction degreasing method capable of reducing degreasing time without consideration of abrupt decomposition/vaporization and swelling caused by heat. An organic binder is removed...
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5856429 |
Polyamide compositions for removal of polyphenols from liquids
Amide-containing polymers characterized by the presence of piperazine amide and/or substituted piperazine amide in the polymer chain are used as adsorbents to remove polyphenolic compounds from...
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5854379 |
Thermal decomposition degreasing method and molded products thereof
A low-cost thermal decomposition degreasing method capable of drastically reducing the time required for a degreasing process which involves heating, vaporization and thermal decomposition, while...
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5840825 |
Gas barrier coating compositions containing platelet-type fillers
Disclosed is a gas barrier coating and multilayer packaging materials made therefrom. The gas barrier coating includes a polyamine (A), a polyepoxide (B), and a filler (C). Polyamine (A) includes...
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5830984 |
Synthesis of optically active helical ladder polymers with unbroken double-bond conjugation
Optically active ladder polymers that are chiral and have an unbroken network of conjugated double bonds along a helical path are synthesized.
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5668245 |
Polymers with heterocyclic side groups
A new class of polymers include repeating units comprising one or more arylene units substituted with heterocyclic side groups. The heterocyclic substituted arylene repeat units have the general...
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5637365 |
Epoxy-amine barrier coatings with aryloxy or aryloate groups
Polyepoxide-polyamine gas barrier coatings for use on packaging materials such as polymeric containers are provided with low permeability at relatively low amine to epoxy cure ratios by including...
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