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7605222 |
Copolyetherimides
Copolyetherimides compositions having high glass transition temperatures and outstanding ductility are presented. The copolyetherimides having M w of at least 40,000 comprising isomeric...
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7592072 |
Bismaleimide prepreg systems
Prepreg composite materials that include a fiber layer and a prepreg resin composed of a bismaleimide resin component, a thermoplastic toughening agent and a resin distribution stabilizer. The...
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7514522 |
Method for producing polycarbonate copolymer
A method for producing a polycarbonate copolymer having structural repeating units represented by formulas (I) and (II):
wherein each of R 1 and R 2 , X, R 3 , R 4 , Y, a to d and n are...
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7507474 |
Thermoplastic polymer composition comprising a hyperbranched polymer and articles made using said composition
The invention relates to thermoplastic compositions comprising a polymer matrix and an additive which modifies the rheological behavior of the matrix in the molten state. The purpose of the...
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7425594 |
Copolymer of glycidyl ester and/or ether with polyol
A copolymer and a process of making the copolymer are disclosed. The copolymer is produced from reacting a glycidyl ester and/or ether with a polyol comprising a functionality of at least 2 wherein...
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7419703 |
Thermally curable, thixotropic blends containing carbamate and/or allophanate groups
The invention provides heat-curable thixotropic mixtures containing carbamate and/or allophanate groups, including at least one oligomer and/or polymer containing at least one of carbamate and...
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7396778 |
Method for synthesizing polymeric material, method for forming polymer thin film and method for forming interlayer insulating film
A Lewis acid-base reaction is caused, in a solution, between a first monomer corresponding to a Lewis acid and a second monomer corresponding to a Lewis base, so as to generate a monomer adduct in...
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7390857 |
Crosslinkable and crosslinked polymers
Crosslinkable polymeric materials are disclosed useful for the temporal stabilization of a poling-induced noncentrosymmetric host lattice containing guest nonlinear optical chromophores. The...
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7365148 |
Polycarbonate and process for producing the same
A polycarbonate containing an ether diol residue producible from a polysaccharide and expressed by the following formula (1),
and a diol residue expressed by the following formula (2)
...
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7365133 |
Blends of poly(ester amide) polymers
Provided herein is a poly(ester amide) (PEA) polymer blend and coatings and medical devices formed of the blend.
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7361715 |
Polymer additives for powder coatings
Star polymers prepared by reacting a highly branched polymer and either a lactone or lactam are disclosed. These star polymers find particular application as additives for powder coating...
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7339009 |
Cross-linked polyimide and method of making them
A cross-linked polyimide is disclosed. The cross-linked polyimide includes a polyimide and at least one oxygenated hydrocarbon. The oxygenated hydrocarbon cross-links the polyimide. A porous...
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7244804 |
Polycarbonate copolymer, resin composition, and molded article
There are provided a polycarbonate copolymer (A) which has excellent light resistance and heat resistance and comprises an aromatic dihydroxy component comprising 5 to 95 mol % of...
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7241832 |
Biodegradable polymer blends for use in making films, sheets and other articles of manufacture
Biodegradable polymer blends suitable for laminate coatings, wraps and other packaging materials are manufactured from at least one “hard” biopolymer and at least one “soft” biopolymer....
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7199174 |
Wide-gap filler material
This invention relates to a composition for repairing metallic articles which in its initial state is in the form of an adhesive, self-supporting putty, capable of being molded including 5–15% by...
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7169885 |
Polyimide membranes
The present invention deals with a process for treating a polyimide comprising exposing said polyimide to a compound selected from the group consisting of dendrimers, hyperbranched polymers and...
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7169878 |
Diamines, polyimide precursors and polyimides produced by using the diamines, and liquid crystal aligning agents
A diamine compound represented by the formula (1):
wherein R 1 is a trivalent organic group, each of X 1 and X 2 is a bivalent organic group, X 3 is an alkyl or fluoroalkyl group having...
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7148314 |
Process for preparation of functionalized polyimides
A method for preparation of a sulfonic and or sulfonic acid salt containing polyimide resins comprising melt reaction of a polyimide resin with an organic compound, wherein the organic compound...
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7115681 |
Resin composition
The present invention provides a resin composition comprising a polyimide containing particular dianhydride and diamine, and an epoxy resin. The resin composition can be bonded at a relatively low...
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7098267 |
Polyamic acid varnish composition and a flexible printed board
A polyamic acid varnish composition, which is composed of a polyamic acid obtained by the addition polymerization of an diamine and an aromatic acid dianhydride, contains as an additive a specific...
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7053168 |
Method for preparing polyimide and polyimide prepared thereby
A method for preparing a polyimide includes introducing a mixture of an oligomer and a solvent to an extruder, removing solvent via at least one extruder vent, and melt kneading the oligomer to...
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7033675 |
Polyarlketone resin film and a laminate thereof with metal
A film of a resin composition comprising total 100 parts by weight of a crystalline polyarylketone resin (A) and a noncrystalline polyetherimide resin (B), and 5 to 50 parts by weight of a filler,...
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7022810 |
Proton exchange membrane materials for the advancement of direct methanol fuel-cell technology
A new class of hybrid organic-inorganic materials, and methods of synthesis, that can be used as a proton exchange membrane in a direct methanol fuel cell. In contrast with Nafion® PEM materials,...
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6955712 |
Proton-conducting polymer with acid groups in side chains, preparation method thereof, polymer membrane manufactured using the polymer, and fuel cell using the polymer membrane
A proton-conducting polymer, a preparation method thereof, a polymer membrane manufactured from the proton-conducting polymer, and a fuel cell having the polymer membrane are provided. The...
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6949619 |
Phenolic hydroxyl-bearing polyimide resin, making method and polyimide resin composition
A polyimide resin having phenolic hydroxyl radicals in its skeleton is prepared using a diamine bearing an aromatic ring having an amino radical attached thereto and another aromatic ring having a...
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6949618 |
Polymer compound, precursor for the same and thin film-forming method using the same polymer precursor
Provided are polyimide and a thin film thereof which have a three-dimensional structure and therefore are excellent in a mechanical strength and a heat resistance as compared with those of...
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6927274 |
Resin compositions, processes for preparing the resin compositions and processes for forming resin films
Polyimide precursors contained in resin compositions of the present invention have a polymer structure unit represented by formula (1) below:
wherein chemical structure A 2 includes an...
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6919422 |
Polyimide resin with reduced mold deposit
A polyimide composition and a process to prepare polyimide resins with reduced plate out and mold deposits is described. During resin molding operations the low plate out resins show a longer...
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6919418 |
Approach to reduce cyclics formation in 3-CIPA based polyetherimide polymers
Methods of reducing the amount of undesirable cyclic oligomer by-products in the production of polyetherimides are disclosed. The resulting polyetherimides have enhanced thermomechanical properties.
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6919404 |
Hybrid polymer materials for liquid crystal alignment layers
The present invention provides novel hybrid polymer optical alignment layers for inducing alignment of a liquid crystal medium. Hybrid polymers of this invention are prepared from at least one...
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6911519 |
Low viscosity melt processable high temperature polyimides
A series of low melting and low viscosity phenylethynyl end-capped polyimides (PETIs) possessed of long term thermal and mechanical stability useful as films, melt coatings, adhesives, matrix and...
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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...
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6908685 |
Polyimide film, method of manufacture, and metal interconnect board with polyimide film substrate
The invention provides a polyimide film manufactured from a polyamic acid prepared from pyromellitic dianhydride in combination with 10 to 60 mol % of phenylenediamine and 40 to 90 mol % of...
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6897264 |
Curable mixtures
A catalyst suitable for crosslinking reaction of a compound containing α,β-unsaturated carbonyl groups and a compound containing a CH-acidic methylene group is provided. A curable mixture...
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6855433 |
Mechanically resilient polymeric films doped with a lithium compound
This invention is a series of mechanically resilient polymeric films, comprising rod-coil block polyimide copolymers, which are doped with a lithium compound providing lithium ion conductivity,...
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6849706 |
Copolyetherimides
Copolyetherimides comprise phthalimide structural units comprising both 3- and 4-linkages, wherein the designations 3-linkage and 4-linkage refer to the isomeric positions on the phthalimide ring...
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6828409 |
HOST-GUEST POLYMER SYSTEM COMPRISING POLYMER HAVING ISOIMIDE GROUP AND ORGANIC CHROMOPHORE, SIDE-CHAIN NONLINEAR OPTICAL POLYMER DERIVED FROM THE SAME, AND METHOD FOR SYNTHESIZING SIDE-CHAIN NONLINEAR OPTICAL POLYMER
A host-guest polymer system including a polymer with an isoimide group and an organic chromophore and capable of converting into a side-chain polymer system, a side-chain nonlinear optical polymer...
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6828390 |
Polyimide substrates having an interpenetrating network morphology and methods relating thereto
A high modulus, dimensionally stable film formed via an interpenetrating polyimide network of two polyimide structures, interlocked and bonded on a molecular level. The polyimide components are...
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6824884 |
Heat resistant resin composition, a heat resistant film or sheet thereof and a laminate comprising the film or the sheet as a susbstrate
A heat resistant resin composition comprising 70 to 30 wt % of a crystalline polyarylketone resin having a peak crystalline melting temperature of 260° C. or higher and 30 to 70 wt % of a...
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6821648 |
Electroluminescent element
An electroluminescent device comprising an anode, a cathode, and at least one electroluminescent organic layer interposed therebetween, wherein a luminescent material in the organic layer emits...
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6805967 |
Polyamic acid varnish composition and a flexible printed board
A polyamic acid varnish composition, which is composed of a polyamic acid obtained by the addition polymerization of an diamine and an aromatic acid dianhydride, contains as an additive a specific...
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6787244 |
Adhesively bonded chip-and wafer stacks
The present invention describes the use of poly-o-hydroxy amides (PHAs) for adhesively bonding articles or materials, especially components used in the semiconductor industry, such as chips and...
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6749895 |
Polymer for preparing liquid crystal alignment layer
The present invention provides a polymer in which coumarin, a photo-reactive molecule, is grafted onto a polyimide for preparing liquid crystal alignment layer which has a superior alignment...
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6734262 |
Methods of forming conductive thermoplastic polyetherimide polyester compositions and articles formed thereby
An electrically conductive thermoplastic composition with a superior ability to be heated rapidly in an electromagnetic field comprises a polyetherimide resin, a polyester resin, and electrically...
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6673872 |
High performance thermoplastic compositions with improved melt flow properties
A high performance thermoplastic polymer composition having improved melt flow properties, comprising a thermoplastic polymer resin and a low intrinsic viscosity poly(arylene ether). Preferred...
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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...
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6653433 |
Polyimide composition having improved peel strength when clad
A polyimide film that exhibits improved peel strength when clad with a metal layer is prepared by reacting a polyamic acid polymer and an esterified polyamic acid oligomer. The esterified oligomer...
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6646060 |
Resin composition containing crystalline polyimide
A resin composition containing a mixture produced by blending a crystalline polyamide expressed e.g. by formula (1) (in the formula, R 1 is a bivalent organic aromatic group or aliphatic group...
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6645632 |
Film-type adhesive for electronic components, and electronic components bonded therewith
A film-type adhesive for electronic components comprises a polyimide resin made up of specific repeating units and having a weight-average molecular weight of 5,000-150,000 in combination with an...
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6610794 |
Polymide/polyarylate resin composition and molded product thereof
A resin composition comprising: a polyimide comprising a recurring unit represented by the following formula (1): wherein Ar 0 is an aromatic hydrocarbon group having 6 to 15 carbon atoms, and...
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