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7511113 |
Oligomeric hydroxy arylether phthalonitiles and synthesis thereof
An aromatic ether oligomer or polyaromatic ether comprising the formula:
O—Ar n ;
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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...
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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...
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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...
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7132496 |
Step-by-step alkylation of polymeric amines
The invention relates to the following: a method for step-by-step alkylation of primary polymeric amines by step-by-step deprotonation with a metallo-organic base and a subsequent reaction with an...
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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...
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7041779 |
Rigid-rod benzobisazole polymers incorporating naphthalene-1,5-diyl structure units
A benzobisazole polymer having repeating units of the formula:
wherein Q is
and wherein Z is —O—, —S— or —NH—. A new method for preparing 1,5-naphthalenedicarboxylic acid from...
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6956100 |
Polyamide resin-containing varnish and its use
An object of the present invention is to provide a polyamide resin composition from which the solvent is easily removed during film formation and which gives a film or adhesive layer reduced in...
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6864347 |
Nonlinear optical chiral compounds and devices incorporating same
The present disclosure is in part directed to optical devices for modulating light comprising compounds which spontaneously align. The disclosure is also directed to electro-optic compounds wherein...
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6855776 |
Amino-terminated polybutadienes
Improved amine-terminated polybutadienes (ATPBs) having one or two terminal groups of the formula —CHRNH 2 wherein R is C 1 -C 20 alkyl, are prepared by aminating a secondary...
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6818734 |
Polybenzazole article and production method thereof
The present invention provides a polybenzazole article superior in light resistance, which contains a light-resisting agent that allows for a regular reflectance of the article of not more than 30%...
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6812290 |
Polyarylene copolymers and proton-conductive membrane
A polyarylene copolymer which comprises (A) aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) aromatic compound units having a main...
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6803441 |
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...
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6794480 |
Monomer containing electron-withdrawing group and electron-donative group, and copolymer and proton-conductive membrane comprising same
A monomer containing an electron-withdrawing group and an electron-donative group which can be easily controlled in the upper limit of the amount of a sulfonic acid, which impairs the mechanical...
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6740728 |
Methods for the preparation of polyesters, poly(ester amide)s and poly(ester imide)s and uses of the materials obtained therefrom
The present invention relates to methods for the preparation of polyesters, poly(ester amide)s and poly(ester imide)s. The materials obtained by the methods of present invention are useful as fluid...
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6706835 |
Curable compositions containing thiazole functionality
Adhesion promoting compounds or resins containing a thiazole functionality (including benzothiazole) and a polymerizable functionality (Z) give improved adhesive strength to metal substrates. A...
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6555626 |
Polyarylene copolymers and proton-conductive membrane
A polyarylene copolymer which comprises (A) from 60 to 3 mol % aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) from 40 to 97 mol %...
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6506872 |
Polycyanoaryl ether and method for production thereof
A novel polycyanoaryl ether exhibiting excellent heat-resistance, hydrolysis-resistance and weatherability, as well as industrially high general-purpose properties, and the method for the...
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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...
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6465083 |
METHOD OF MAKING VARNISH OF MODIFIED CYANATE ESTER GROUP CURABLE RESIN COMPOSITION, AND PREPREG, METAL CLAD LAMINATED BOARD, FILM, PRINTED CIRCUIT BOARD, AND MULTILAYERED CIRCUIT BOARD USING THE COMPOSITION
A modified cyanate ester group curable resin composition, and varnishes, prepregs, laminated boards adhered with metal foil, films, printed circuit boards, and multilayered circuit boards using the...
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6465601 |
Transaminated dialkylaminoalkylphenol-3° and 1° amine-containing compound
Compounds active as accelerators for curable epoxy and polyurethane systems, those compounds having been prepared by means of a transamination reaction by reacting (a) a substituted phenolic...
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6458993 |
Cyanate esters having flame resistant properties
The present invention relates to novel aromatic cyanate ester compounds containing at least two rings linked by a group containing an unsaturated group. The present invention further relates to...
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6414104 |
Arylamine-substituted poly (arylene vinylenes) and associated methods of preparation and use
The invention provides novel conjugated polymers comprised of arylamine-substituted poly(arylene vinylenes). The polymers have the general structure (I) wherein: Ar is arylene, heteroarylene,...
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6403755 |
Polyesters containing phosphazene, method for synthesizing polyesters containing phosphazenes
A new phosphazene-based polyester macro-molecule is provided, as is a method for producing the macro-molecule.
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6388044 |
Polyether resin and coating solution for forming insulation film
The present invention provides a thermosetting polyether resin obtained by polycondensing a dihalogen compound with a bisphenol compound to obtain a polyether resin having a repeating unit...
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6372881 |
Monomers for preparing arylamine-substituted poly(arylene-vinylenes)
The invention provides novel conjugated polymers comprised of arylamine-substituted poly(arylene vinylenes). The polymers have the general structure (I) wherein: Ar is arylene, heteroarylene,...
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6355750 |
Dye attach adhesives for use in microelectronic devices
A thermoplastic or thermosetting adhesive for bonding an electronic component to a substrate in which the adhesive is cured in situ from a curable composition comprises one or more poly- or...
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6346596 |
Gas barrier polymer composition
A gas barrier polymer composition with active hydrogen functionality is provided. The polymer may be prepared by reacting a solution of organic diacid containing at least one active hydrogen group...
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6288206 |
Chiral polymer compositions exhibiting nonlinear optical properties
Chiral organic polymers doped with or appended by nonlinear optical dyes are disclosed. The use of chiral polymers produces a more stable noncentrosymmetric environment for the dye molecules...
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6284863 |
Polymers having O-substituted vinylphenol unit and resist compositions containing them
A polymer having an O-substituted vinylphenol unit represented by the following formula (I) ##STR1## wherein R 1 , R 2 and R 3 represent an alkyl; or R 1 and R 2 , R 1 and R 3 or R 2 and R 3 ...
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6273543 |
Aqueous developable high performance curable polymers
Disclosed is a composition which comprises a polymer containing at least some monomer repeat units with water-solubility- or water-dispersability-imparting substituents and at least some monomer...
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6265530 |
Die attach adhesives for use in microelectronic devices
A thermoplastic or thermosetting curable adhesive composition for bonding an electronic component to a substrate in which the adhesive is cured in situ comprises one or more poly- or...
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6222000 |
Process for producing amorphous anisotropic melt-forming polymers having a high degree of stretchability
Process for producing highly stretchable, amorphous anisotropic melt-forming polymers having recurring units derived from p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, at least one aromatic...
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6037438 |
Cyanite composition and copper-clad laminate using the composition
A cyanate resin composition comprising as essential components a cyanate compound represented by formula (1) or its prepolymer and a curing agent: ##STR1## wherein each of R 1 and R 2 represents...
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6022947 |
Light-colored, low molecular weight phenolic-modified rosin esters
Light-colored phenolic-modified rosin esters, suitable for use as, for example, tackifiers in adhesive compositions, are prepared by reacting together rosin, a phenolic compound, formaldehyde or a...
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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...
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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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5798432 |
Method of making thermotropic liquid crystalline polymers containing hydroquinone
Liquid crystalline polymers that are made from 4-hydroxybenzoic acid, 2,6-naphthalenedicarboxylic acid, terephthalic acid, hydroquinone, and N-acetyl-4-aminophenol by heating the monomers in the...
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5786071 |
Method of preparation of polyquinolines
New polyquinoline polymers are provided, as well as new methods for preparing the polyquinoline polymers using a novel combination of monomers. The polyquinoline polymers comprise repeat units...
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5780572 |
Method of increasing polyaniline conductivity
A method for increasing the conductivity of a composition of a polyaniline salt of an organic acid is disclosed. The method comprises contacting the composition with a polar organic solvent that is...
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5763558 |
Process and composition for the use of substituted melamines as hardeners of novolac resins
A process for hardening a composition and a hardenable composition, in wh there are used: at least one novolac resin; at least one hardener of the resin, selected from the group consisting of...
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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...
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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...
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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...
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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...
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5637670 |
Polybenzimidazoles via aromatic nucleophilic displacement
Novel molecular weight controlled and endcapped polybenzimidazoles (PBI) are prepared by the aromatic nucleophilic displacement reaction of di(hydroxyphenylbenzimidazole) monomers with activated...
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5608013 |
Polyimides and thermosetting resin compositions containing the same
A polyimide obtained by reacting an acid dianhydride such as catechol bistrimellitate dianhydride, bisphenol A bistrimellitate dianhydride, etc. with a diamine such as...
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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...
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5569733 |
Tertiary aminourea compositions and their use as catalysts in curable compositions
A composition which is the reaction product of (i) a material having the structure ##STR1## where R 1 is an organic radical having 6 to 25 carbon atoms; R 2 is alkylene having 1 to 4 carbon...
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5550282 |
Bifunctional aromatic cyanates, prepolymers and electrical laminates made therefrom
Dislcosed is a curable composition of a partially trimerized prepolymer of the dicyanate ester of the formula ##STR1## wherein R 1 and R 2 are the same or different and each is alkyl,...
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