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7605223 |
Low melt viscosity imide oligomers and polyimides therefrom
The present invention relates to novel imide oligomer compositions, polyimides formed therefrom, and methods for making and using the same. In particular, the invention relates to novel polyimide...
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7563557 |
Polyamide
A polyamide having a structure represented by the chemical formula (1):
wherein m and n represent an integer satisfying m≧1, n≧1, 2≦(m+n)≦150, 0.3≦m/(m+n)≦0.9, R 1 and R 2 ...
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7550553 |
Fluorinated diamine and polymer made from the same
A fluorine-containing diamine represented by the formula (1), [Chemical Formula 29]
is provided. Furthermore, a fluorine-containing polymer is provided by using this fluorine-containing amine...
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7541388 |
Polyimide foams
A fully imidized, solvent-free polyimide foam having excellent mechanical, acoustic, thermal, and flame resistant properties is produced. A first solution is provided, which includes one or more...
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7537715 |
Self-poled electro-optic and nonlinear optical polymer, method of manufacturing the polymer, and film manufactured from the polymer
A polyamic ester (PAE) film, which shows an electro-optic (EO) and nonlinear optical (NLO) properties without a poling process, is prepared. The chromophore in the film seems to be slightly...
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7524541 |
Material for liquid crystal aligning and liquid crystal displays made by using the same
To provide a liquid crystal aligning agent useful to obtain a liquid crystal alignment film which exhibits a high voltage retention characteristic even under high temperature conditions and which...
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7521167 |
Ester group-containing poly (imide-azomethine) copolymer, ester group-containing poly (amide acid-azomethine) copolymer, and positive photosensitive resin composition
Provided are an ester group-containing poly(imide-azomethine)copolymer having low linear thermal expansion coefficient; a production method thereof; an ester group-containing poly(amide...
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7491752 |
Photoactive materials
Photoreactive dendrimers comprising a core portion, branching units and terminal groups, wherein at least one terminal group and/or branching unit is a photoreactive group and wherein the photo...
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7465780 |
Polyimide comprising sulfonic acid group at the terminal of side chain, and polymer electrolyte and fuel cell using the same
The present invention is related to a polyimide, which has high ionic conductivity and good structural stability, does not decompose even under low humidity, and is inexpensive, and a polymer...
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7459518 |
Thermoplastic polyimide composition
A thermoplastic polyimide composition, comprising a silane-modified polyimide (A); and a polar solvent (B), wherein the silane-modified polyimide (A) is obtained by reacting a polyimide (a) and an...
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7459216 |
Polyimide copolymer and metal laminate using the same
A novel polyimide copolymer, which is a copolymer comprising two kinds of tetracarboxylic acid dianhydrides consisting of (A) isopropylidene-bis(4-phenyleneoxy-4-phthalic acid) dianhydride and (B)...
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7438957 |
Poly(aryletherimides) for negative birefringent films for LCDs
A class of soluble poly(aryletherimides) (PAEIs) having flexible backbones, useful in the manufacture of polymeric optical films are disclosed. The poly(aryletherimides) are dissolved in organic...
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7427654 |
Degradable polymides
Degradable polyimides are prepared in high yield by polymerizing a monomer containing at least two anhydride groups, and a monomer containing at least two primary amine groups and at least one...
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7417108 |
Process for production of 2,3,3′,4′-biphenyltetracarboxylic dianhydride
A process for producing 2,3,3′,4′-biphenyltetracarboxylic dianhydride (a-BPDA), comprising dehydrating 2,3,3′,4′-biphenyltetracarboxylic acid in an inert gas atmosphere under heating at 180...
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7396572 |
Alignment layer and liquid crystal display with the same
A liquid crystal display includes; a first and a second display panel facing each other, an alignment layer formed on at least one of the first and the second display panels and including a...
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7368205 |
Polyamide resin, positive-working photosensitive resin composition, method for producing pattern-formed resin film, semiconductor device, display device, and method for producing the semiconductor device and the display device
The invention provides a polyamide resin having a structure represented by the formula (1), wherein about 0.1 mol % to about 30 mol % of the total amount of Y in the formula (1) has a structure...
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7338715 |
Low temperature cure polyimide compositions resistant to arc tracking and methods relating thereto
The polyimides of the present invention are derived from aliphatic diamines and show advantageous arc tracking performance (i.e., low arc tracking). These polyimides can be cured at low...
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7279543 |
Anti-bacterial polymer and method for the preparation thereof, anti-bacterial polymer film and method for the preparation thereof, and article having such a film on the surface thereof
An anti-bacterial polymer of the present invention consists of a vapor deposition-polymerization reaction product of a diaminobenzoic acid monomer or halogen atom-containing diamine monomer and a...
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7186454 |
Dielectric films and materials therefor
A material for dielectric films is a polymerizable composition containing an organic solvent, and an adamantanepolycarboxylic acid derivative represented by following Formula (1):
wherein X is...
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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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7157204 |
Soluble polyimide for photosensitive polyimide precursor and photosensitive polyimide precursor composition comprising the soluble polyimide
A soluble polyimide for a photosensitive polyimide precursor and a photosensitive polyimide precursor composition including the soluble polyimide, wherein the soluble polyimide contains hydroxyl...
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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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7147906 |
Data storage medium comprising polyimides
In one aspect the present invention provides a storage medium for data, the storage medium comprising: a) a substrate, a physical portion of which comprises at least one polyimide, and b) at least...
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7144607 |
Liquid crystal orientation agents and liquid crystal display device with the use thereof
A polyimide-containing liquid crystal alignment treating agent having a structure of the formula (I) incorporated therein,
wherein Q is a single bond or a divalent organic group, R 1 to R 4 ...
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7135543 |
Polyamic ester having moieties of electro optic and nonlinear optical compound in side chains as an electro optic and nonlinear optical polymer, manufacturing method therefor and film manufactured therefrom
The invention relates to a polymer material having electro optic and nonlinear optical properties suitable for manufacturing a device using the electro optic and nonlinear optical properties. More...
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7132137 |
Vertical alignment polyimide and vertical alignment film compositions for LCD
A vertical alignment polyimide for LCD has the following structure:
wherein R 1 and R 2 are same or different tetravalent aromatic residues or alkyl residues; n is an integer, and 24≧n≧6;...
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7129318 |
RTM and RI processable polyimide resins
Polyimide resins that are suitable for processing by resin transfer molding (RTM) and resin infusion (RI) methods at reduced processing temperatures are provided. The inventive RTM and RI...
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7122244 |
Polyamide-imide resin solution and the use thereof for producing wire enamels
The present invention relates to a polyamideimide resin solution preparable by reacting (a) aromatic polycarboxylic acids and/or their anhydrides with (b) aromatic imide- and amide-forming...
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7112648 |
Polyimide film excellent in alkali etching processability and punchability
A polyimide film according to the present invention satisfies Condition (1) in which a tear propagation resistance variation C H is not more than 1.0 g, and/or Condition (2) in which a swelling...
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7109287 |
Space environmentally durable polyimides and copolyimides
Polyimides displaying low color in thin films, atomic oxygen resistance, vacuum ultraviolet radiation resistance, solubility in organic solvents in the imide form, high glass transition (T g )...
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7105211 |
Liquid crystal aligning agent, liquid crystal aligning films, and liquid crystal display devices
A liquid crystal alignment treating agent for optical alignment treatment, whereby it is possible to obtain a liquid crystal alignment film which presents a high and stable tilt angle of liquid...
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7090900 |
Liquid crystal aligning agent for vertical alignment, alignment layer for liquid crystal, and liquid crystal displays made by using the same
A liquid crystal alignment treating agent containing a polyamic acid which is represented by the following formula (I) and exhibits a reduced viscosity of from 0.05 to 5.0 dl/g (in...
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7087311 |
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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7083833 |
Photoalignment materials and liquid crystal display fabricated with such photoalignment materials
An aromatic polyamide photoalignment material prepared by a reaction from a diamine compound with a side branch and a photosensitive dicarboxylic acid. Furthermore, liquid crystal display devices...
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7078477 |
Process for producing solvent-soluble polyimide
In the process of the present invention, a solvent-soluble polyimide is produced by polycondensing at least one tetracarboxylic acid component with at least one diamine component in a solvent in...
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7074882 |
Polyimide resin for electrical insulating material
The present invention provides a polyimide resin for an electrical insulating material which comprises a polyimide resin having a repeating unit represented by general formula (I):
wherein R 1 ...
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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...
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7071287 |
Aerogel metallic compositions
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...
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7071282 |
Benzimidazole diamine-based polyetherimide compositions and methods for making them
Disclosed herein are polyetherimide compositions comprising structural units of the formula:
derived from at least one benzimidazole diamine, wherein R 1 and R 2 are independently selected...
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7070864 |
Laminate for electronic materials
This invention relates to a laminate which is excellent in heat resistance after moisture absorption required in a lead-free solder joint, and is suitable for use in flexible printed wiring boards...
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7060784 |
Polyimide precursor resin solution composition sheet
A polyimide precursor resin solution composition sheet having a solvent content of 1–50% by weight and a thickness of 1–10 microns has improved adhesion, forms a heat resistant polyimide layer...
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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,...
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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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7041778 |
Processable thermally stable addition polyimide for composite applications
A novel polyimide resin consisting essentially of 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA), 3,4,3′,4′-biphenyltetracarboxylic dianhydride (BPDA), 2,2 bis...
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7041773 |
Polyimide sulfones, method and articles made therefrom
Polyimide sulfone resins are provided with a glass transition temperature of from 200–350° C., residual volatile species concentration of less than 500 ppm and a total reactive end group...
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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...
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7034101 |
Polycarbodiimide copolymer and production method thereof
A polycarbodiimide copolymer which comprises at least one structural unit selected from rubber residues represented by the following formulae (1) and (2) in a number “m”:
and a structural...
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7034098 |
Photoactive polymer
A photoactive side-chain polymer from the class of polyimides, polyamide acids and esters thereof, comprising as a side-chain a dendritic block incorporating photoactive groups at its surface. The...
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7026436 |
Low temperature polyimide adhesive compositions and methods relating thereto
The present invention relates to a polyimide adhesive composition having a polyimide derived from an aromatic dianhydride and a diamine component, where the diamine component is preferably about 50...
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