|
Match
|
Document |
Document Title |
|
|
8143366 |
Aryl carbamate oligomers for hydrolyzable prodrugs and prodrugs comprising same
The present invention provides a compound having a formula: where R1 is selected from the group consisting of alkyl, CH2(OC2H4)OCH3, and —(OC2H4)OCH3; n is 0-4; Olig is an oligomer having a f...
|
|
|
8106147 |
High strength polyimide membrane and method for forming the same
The present invention discloses a polyimide membrane synthesized by one or more emeraldine amine-capped aniline trimer oligomers, one or more dianhydrides, and an optional diamine, whereby the...
|
|
|
8093346 |
Method for producing an aminohydroxybenzoic acid-type compound
Provided is a method for efficiently producing a 3-amino-4-hydroxybenzoic acid-type compound by culturing a coryneform bacterium that has a gene encoding a mutated aspartokinase not subject to...
|
|
|
8084569 |
Process for the synthesis of diaminopyridines from glutarimidines
A liquid-phase process is provided for the synthesis from glutarimidines of diaminopyridines and related compounds, which are used industrially as compounds and as components in the synthesis of a...
|
|
|
8022167 |
Process for the synthesis of diaminopyridines from glutaronitriles
A liquid-phase process is provided for the manufacture from glutaronitriles and related compounds of 2,6-diaminopyridine and related compounds, which are used industrially as compounds and as...
|
|
|
7999057 |
Gas-phase process for the synthesis of diaminopyridines from glutaronitriles
A gas-phase, continuous process is provided for the manufacture of 2,6-diaminopyridine and related compounds from glutaronitriles, which are used industrially as compounds and as components in the...
|
|
|
7838614 |
Siloxane containing block copolymers, process for their preparation and their use for lubricants
The invention relates to novel polyester-polysiloxane block copolymers, to a process for their preparation and to the use of these polymers as a base oil or as an additive in lubricants, especially...
|
|
|
7838122 |
Hydrazide compounds with angiogenic activity
Compounds exhibiting angiogenic properties incorporating the structure of Formula I: R3—NH—NH—C(═O)—R2—P—R1 (I) wherein P is a water-soluble, biodegradable polymer, R1 is hydrogen, lower alkyl, ...
|
|
|
7790831 |
Hyperbranched polybenzazoles via an A3+ B2 polymerization
In accordance with the present invention there are provided hyperbranched benzobisazole polymers having repeating units of the formulas: and hyperbranched bibenzazole polymers having repeating...
|
|
|
7582719 |
Carboxylic-acid-terminated hyperbranched poly(benzoxazole) and the star block copolymers therefrom
Hyperbranched benzazole polymers having repeating units of the formula: wherein Q is —O—, —S— or —NH—, and the terminal groups R are carboxylic acids with their total number equals n+1. A generic m...
|
|
|
7544762 |
Catalyst for preparation of polyester and process for preparing polyester using the catalyst
A polyester having a good color tone (a high L value and a low b value) and a low acetaldehyde content is obtained by using a catalyst containing a reaction product of (A) a titanium compound (1)...
|
|
|
7511081 |
Recycled method for a wasted polymer which is mixed polyester polyamide and reclaimed materials thereof
The present invention relates to a recycling method of a mixed waste of polyester and polyamide (hereinafter, referred to as “mixed waste”) in which polyesters including polyethylene ter...
|
|
|
7511113 |
Oligomeric hydroxy arylether phthalonitiles and synthesis thereof
An aromatic ether oligomer or polyaromatic ether comprising the formula: O—Arn; wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a d...
|
|
|
7507784 |
Liquid crystalline thermosets from ester, ester-imide, and ester-amide oligomers
Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and end-capped with phenylacetylene, phenylmaleimide, or...
|
|
|
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)...
|
|
|
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...
|
|
|
7049386 |
Compositions and methods for thermosetting molecules in organic compositions
In a method of producing a low dielectric constant polymer, a thermosetting monomer is provided, wherein the thermosetting monomer has a cage compound or aryl core structure, and a plurality of...
|
|
|
6767970 |
PPE copolymers, preparation thereof, and resin composition utilizing the same
PPE copolymers comprise three repeating units. The PPE copolymers are polymerized with 2,6-DMP, dialkenylamide or dialkenylamine phenol, and another phenol derivative. A resin composition having a...
|
|
|
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...
|
|
|
6590022 |
Process for preparing protective-colloid-stabilized vinylaromatic-1,3-diene copolymers
A method is provided for producing protective colloid-stabilized vinyl aromatic-1.3-diene-copolymers in the form of their aqueous polymer dispersions or in the form of a powder which can be...
|
|
|
6482915 |
Method for producing liquid crystalline polymer
The invention provides a method for producing a thermotropic liquid crystalline polymer of high quality at high yield and in short polymerization time, which method includes polymerizing staring...
|
|
|
6388045 |
Liquid-crystalline polymer
Provided is a liquid crystalline polymer which is obtained by copolymerizing at least one polyfunctional aromatic monomer selected from the group consisting of the compounds represented by the...
|
|
|
6177182 |
Thermally reactive near infrared absorption polymer coatings, method of preparing and methods of use
Provided herein are novel polymeric coating materials for direct digital imaging by laser. More specifically the novel coating materials are thermally reactive near infrared absorption polymers...
|
|
|
6001926 |
Fiber-reinforced phthalonitrile composite cured with low-reactivity aromatic amine curing agent
A fiber-reinforced phthalonitrile composite is made by impregnating or coating a fibrous material with a phthalonitrile prepolymer mixture containing a phthalonitrile monomer and an aromatic amine...
|
|
|
5973072 |
Polymeric vehicles which include a phenolic urethane reactive diluent
The present invention is directed to a polymeric vehicle, the formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where...
|
|
|
5948881 |
Polyamide curing agents based on mixtures of polyethylene-amines, piperazines and deaminated bis-(p-aminocyclohexyl) methane
Curative compositions of amine terminated polyamide resins blended with a deaminated bis-(p-aminocyclohexyl)methane composition (DeAms) are useful for curing adhesive epoxy resin compositions. The...
|
|
|
5922807 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Fiber-reinforced phthalonitrile composite cured with low-reactivity aromatic amine curing agent
A fiber-reinforced phthalonitrile composite is made by impregnating or coating a fibrous material with a phthalonitrile prepolymer mixture containing a phthalonitrile monomer and an aromatic amine...
|
|
|
5919890 |
Method for production of polybenzazole
A method for producing polybenzazole, which comprises reacting a PBZ monomer salt with an AA-PBZ monomer or a BB-PBZ monomer in a non-oxidizing solvent having a dehydrating action to give an...
|
|
|
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--,...
|
|
|
5852155 |
Compositions of polyesteramides
Disclosed are polyesteramide resin compositions having amide units of formula (I): ##STR1## and the units of the formula (II): ##STR2## wherein the polyesteramide is substantially devoid of units...
|
|
|
5807972 |
Polycaprolactam with novel chain regulation
The invention is directed to a hydrolytically polymerized polycaprolactam with new chain regulation, whereby the polymerization of caprolactam (I) is carried out with 0.1-0.7 weight percent of an...
|
|
|
5750711 |
Dicarboxylic acid derivatives
The dicarboxylic acid derivatives according to the invention have the following structure ##STR1## wherein X denotes O, S, (CF2)m, C(CF3)2 or CF2 --CF(CF3) (m=1 to 10), and R stems from the...
|
|
|
5747175 |
LCP blends
Liquid-crystalline polymer blends comprising two or more cholesteric liquid-crystalline polymers or at least one nematic liquid-crystalline polymer and at least one cholesteric liquid-crystalline...
|
|
|
5744125 |
Cosmetic melanins
Disclosed are cosmetic melanins of different colors produced by procedures involving oxidative polymerization of monomeric precursors of melanin and/or co-monomers that enhance substantivity or...
|
|
|
5726275 |
Process for the batchwise preparation of poly-p-phenylene terephthalamide
Process for the batchwise preparation of poly-p-phenylene terephthalamide polymer by means of reacting approximately equimolar amounts of p-phenylene diamine and terephthaloyl dichloride in a...
|
|
|
5703199 |
Process for the preparation of nitrogen-containing polymers
To prepare nitrogen-containing aromatic polymers, for example polyamides, polyimides and polybenzimidazoles, polyvalent aromatic carboxylic acids and aromatic diamines and/or aminocarboxylic acids...
|
|
|
5670603 |
Polymers exhibiting nonlinear optical properties
This invention relates to polymers having non-linear optical properties which polymers include fluorene moieties having at least one electron accepting group and at least one electon donating group...
|
|
|
5665855 |
Polymers and copolymers originating from the addition of oligomers containing diamino and dihydroxy ends and of bisoxazinones or bioxazolinones, and process for obtaining them
Disclosed are polymers and copolymers containing at least one repeating unit of the formula ##STR1## in which X is O or NH; R is a single bond or a hydrocarbon chain; R' is a hydrocarbon chain...
|
|
|
5639849 |
Polymeric phthalocyanines and precursors therefor
Novel fumaronitriles and dicyanophenanthrenes, for example, bis(4-fluorophenyl)fumaronitrile and 3,6-difluoro-9,10-dicyanophenanthrene which can be produced from the fumaronitrile, produce useful...
|
|
|
5606012 |
Polyetheramidoamine hydrogels as heparinizable materials
Polymeric polyetheramidoamine hydrogel materials, which are capable of complexing heparin in physiological conditions are herein described. Said materials are useful in the manufacturing of medical...
|
|
|
5591809 |
Process for preparing hyperbranched polymers
The present invention provides novel one-step processes for preparing highly branched macromolecule polymers that have highly controlled molecular architectures. The process comprises the reaction...
|
|
|
5554715 |
Poly(N-arylenebenzimidazole)s via aromatic nucleophilic displacement
Novel poly(N-arylenebenzimidazole)s (PNABls) are prepared by the aromatic nucleophilic displacement reaction of novel di(hydroxyphenyl-N-arylene benzimidazole) monomers with activated aromatic...
|
|
|
5550204 |
Ether and ester oligomers with multidimensional morphology
Crosslinkable, polyaromatic, polyether or polyester oligomers can have glass transition temperatures above 900° F. while exhibiting desirable toughness for aerospace applications and ease of ...
|
|
|
5534613 |
Benzobisazole polymers containing triarylamino moieties
Polymers of the class rigid-rod aromatic heterocyclic polymers, having repeating units of the formula: ##STR1## wherein R is selected from the group consisting of --H, --CH3, --N(CH3)2 and --OH,...
|
|
|
5530087 |
Polyanils
Polyanils of the general formula ##STR1## where R1 is C1 -C24 -alkyl, C1 -C24 -alkoxy, Cl, Br, CF3 or NO2, R2 is para-phenylene, a fused aromatic ring system of 10 to 30 carbon atoms or ##STR2## R3...
|
|
|
5498477 |
N-phenylhydroxylamine polymers, and associated methods of preparation and use
Electroactive polymers are provided which contain alternating phenyl rings and nitrogen atoms, and which contain both quinoid mer units and benzenoid mer units. The polymers are formed by...
|
|
|
5464923 |
Polymer compositions containing substituted biphenyl pyrazines
The present invention provides novel substituted biphenyl pyrazines or pyrazine derivatives ("BPD") which are functional and have useful application as a monomer for a variety of high performance...
|
|
|
5453515 |
Benzophenone iminodiimides and heat-stable polymers derived therefrom
Benzophenone iminodiimides of the formula I ##STR1## which Y denotes hydroxyl or carboxyl, R1 denotes the optionally substituted radicals alkylene, phenylene or benzylidene, R2 denotes the radicals...
|
|
|
5422415 |
Polyether polyol and polyurethane compositions protected against oxidation and core scorching
Described are compositions protected against thermal and oxidative degradation that comprise A) a polyether polyol or mixtures of such polyols, B) at least one benzofuranone derivative of formula...
|
|
|
5387657 |
Epoxy resins containing thiadiazole and/or oxadiazole moieties
Epoxy resins containing more than one vicinal epoxide group per molecule and at least one thiadiazole, oxadiazole or both thiadiazole and oxadiazole moiety per molecule are disclosed, as well as...
|