Matches 351 - 400 out of 1356 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
5773561 Polymer sealants/adhesives and use thereof in electronic package assembly  
The present invention relates generally to a new adhesive comprising a vinyl containing siloxane-containing polyimide for use in TSM capping of electronic package assemblies with adhesive...
5770676 Process for controlling morphology and improving thermal mechanical performance of high performance interpenetrating and semiinterpenetrating polymer networks  
In the process of the present invention, a non-polar, aprotic solvent is removed from an oligomer/polymer solution by freeze-drying in order to produce IPNs and semi-IPNs. By thermally quenching...
5762849 Molding material  
Plastic blends are provided that contain polyester and polycarbonate in combination with isocyanates or isocyanurates or their derivatives and bis(oxazoline) derivatives as additives, to give a...
5761809 Process for substituting haloalkylated polymers with unsaturated ester, ether, and alkylcarboxymethylene groups  
Disclosed is a process which comprises reacting a haloalkylated aromatic polymer with a material selected from the group consisting of unsaturated ester salts, alkoxide salts, alkylcarboxylate...
5760170 Polyester composition  
A polymer composition comprises (a) a stereospecific, preferably fermentation derived, polyester of molecular weight Mw over 100000 consisting of repeating units of formula --O--C m H n --CO-- in...
5760159 Reflector as well as process and means for its production  
In the reflector according to the invention based on unsaturated polyester resins the surface of the unworked piece has an average surface peak-to-valley height of less than 0.5 μm. It is produced...
5756650 Polyimide precursor composition, method of forming polyimide film, electronic parts and liquid crystal element  
A polyimide precursor composition, which comprises, a polyamic acid having a repeating unit represented by the following general formula (PA), and at least one kinds of cure accelerator selected...
5750711 Dicarboxylic acid derivatives  
The dicarboxylic acid derivatives according to the invention have the following structure ##STR1## wherein X denotes O, S, (CF 2 ) m , C(CF 3 ) 2 or CF 2 --CF(CF 3 ) (m=1 to 10), and R stems from...
5750633 Dope for cast formation and method of manufacturing the same  
A dope for cast formation comprising a fluorine including polyimide resin and an organic solvent (P) as main components. The fluorine including polyimide resin has at least one --CF 3 group in the...
5747606 Increasing the molecular weight of polyesters and premix useful for this process  
An increase in the molecular weight of polyester and recycled polyester can be achieved by blending said polyester with a difunctional epoxy resin and a sterically hindered...
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...
5739263 Film adhesive and process for production thereof  
The present invention provides a film adhesive comprising, as the main constituent, a polyimide resin having a glass transition temperature of 350° C. or lower and soluble in organic solvents,...
5736592 Process for intramolecularly condensing a non-linear optical polyamic acid composition  
A process for intramolecularly condensing a polyamic acid composition containing an NLO compound to form a polyimide host matrix composition containing as a guest the NLO compound, which process...
5734008 Polyimide film  
The polyimide film of this invention is formed from a polyimide, which is prepared by reacting a diamino compound represented by the general formula (1): ##STR1## wherein X represents a hydrocarbon...
5731401 Process for the preparation of thermotropic aromatic polyesters directly from dialkyl aromatic esters  
A new process is provided for the formation of aromatic polyesters directly from the reaction of dialkyl ester of an aromatic carboxylic acid with dihydric phenols. The polycondensation is carried...
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...
5714567 Process for the preparation of aromatic polyesters  
An improved process for the preparation of aromatic polyesters, whereby dialkyl esters of aromatic dicarboxylic acids are melt-polymerized with aromatic bisphenol to furnish an amorphous...
5714569 Aliphatic polyester resin and method for producing same  
An aliphatic polyester resin having a λ value representing the magnitude of non-linearity of elongational viscosity of 1.5 to 8.0, said λ value being defined by the following formula (1): λ=λ...
5714568 Methods of preparing polyesters from cycle organic carbonates in the presence alkali metal-containing catalysts  
A process for preparing an esterification product is disclosed. The process comprises providing a polyfunctional organic acid or anhydride, a cyclic organic carbonate compound, and a catalyst...
5708128 Linear polyamic acid, linear polyimide and thermoset polyimide  
Novel thermoset polyimide and composite materials comprising the thermoset polyimides and a fibrous reinforcement are prepared according to this invention. The thermoset polyimides are obtained by...
5708108 Water treatment polymer containing poly oxy- (hydroxymethyl)-1,2-ethanediyl!! macromonomers and methods of use thereof  
A polymer and method of controlling corrosion and the formation and deposition of scale imparting compounds in water systems is disclosed. The polymer has the general structure: ##STR1## wherein E...
5705574 Method for making a polyimide blend  
Polyimide oligomers include (1) linear, mono-functional crosslinking oligomers prepared by condensing a monoanhydride end cap with a diamine that includes alternating ether and "sulfone" (--SO 2 ...
5703179 Method for producing polyesters  
Method for producing polyesters by measuring the content of at least one of water, glycol and its ester-forming derivative in the distillate to be recycled, determining the amounts of the raw...
5698661 High molecular weight polyesterpolycarbonates and the use thereof for the preparation of bioerosible matrices  
Polyesterpolycarbonates of formula (I) ##STR1## wherein a is an integer from 2 to 300; R 1 and R 2 , which can be the same or different, are each a polyester residue of formula (II) ##STR2## with...
5696222 Process for the production of polycarbonate  
A process for the production of a terminal-blocked aromatic polycarbonate by melt-polycondensing an aromatic dihydroxy compound and diphenylcarbonate, the process comprising adding a specific...
5696235 Polyimide AMD process for producing the same  
Novel polyimides which are soluble in various organic solvents and excellent in thermal resistance, processability are disclosed. The polyimides comprise repeating units represented by the...
5688895 Liquid crystalline poly(ester-amides)  
Disclosed herein are thermotropic liquid crystalline poly(ester-amides) containing repeat units derived from alipatic diamines and other monomers, such as aromatic diols, aromatic dicarboxylic...
5688894 Polyester resin powder coating compositions  
A method of curing a powder coating composition comprises reacting a polyester resin with an alkanolamine derivative of titanium or zirconium. This derivative is the reaction product of an...
5686558 Liquid crystal orientation film and a liquid crystal display element  
The invention relates to a liquid crystal orientation film having a specific polymer, the main chain of the polymer formed of urea bonds and imide bonds, and a liquid crystal display element...
5686559 Poly(imide-amic ester), process for preparing the same, and processes for preparing polyimide film and polyimide fiber from the same  
A poly(imide amic ester) having repeating unit of formula (I) and a process for the preparation thereof are provided, wherein formula (I) has the structure ##STR1## wherein Ar is, ##STR2## Ar' is,...
5686552 Polyester compositions, polyester monofilaments; process for production thereof and products employing polyester monofilaments  
A polyester composition with a polymer component which contains 99.8-60 wt % of a polyester with a terminal carboxyl group concentration of not more than 10 equivalents/10 6 g (A) and 0.2-40 wt %...
5684116 Titanium dioxide/silicon dioxide coprecipitates and titanium dioxide/zirconium dioxide coprecipitates as polycondensation catalysts for polyesters and copolyesters  
For the preparation of polyesters and copolyesters, titanium dioxide/silicon dioxide coprecipitates having a composition of TiO 2 :SiO 2 =90:10 to 20:80 mol/mol and/or titanium dioxide/zirconium...
5684087 Process for producing thermoplastic granulated polymer material from polymer solutions  
This invention relates to a process for producing granulated polymer materials from polymer solutions, in which organic solvent of the polymer solution is evaporated in a heat exchanger, optionally...
5672426 high barrier transparent films  
A process for making a transparent film comprising a liquid crystalline polymer, and a transparent film made thereby having high barrier properties. In this process, the LCP is dissolved in an...
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...
5670609 Polyimide films from pyromellitic dianhydride and 2-2'-bis(perfluoroalkoxy)benzidines as alignment layers for liquid crystal displays  
A polyimide alignment film based on pyromellitic dianhydride and a 2,2'-bis(perfluoroalkoxy)benzidine, as major components, for use in liquid crystal display devices.
5668247 Thermoplastic polyimide, polyamide acid, and thermally fusible laminated film for covering conductive wires  
The invention provides novel thermoplastic polyimide featuring solid adhesive property under low temperature, low hygroscopic coefficient, and solid resistivity to radioactive rays. The invention...
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...
5668242 Polyesters for the bonding of textiles  
Polyether esters are employed for the adhesive bonding of textiles since they are resistant to washing and dry cleaning. The polyether esters of the prior art have the disadvantage that they often...
5663281 Process for preparing high molecular weight polyesters  
An improved process for preparing high molecular weight polyester polymers, such as poly(butylene terephthalate), an alkylene glycol and a di- or tricarboxylic acid by first preparing a pre-polymer...
5663276 Wholly aromatic polyester, composition thereof, and molded article made therefrom  
A wholly aromatic polyester having excellent moldability, heat resistance and blistering resistance and a composition thereof are obtained from an aromatic polyester composed of six specified types...
5663238 Copolyesters containing naphthalene and the preparation thereof  
The present invention relates to a random copolyester containing naphthalene ring structure, in particular to a random copolyester containing a first repeating unit which is the same as that of...
5658995 Copolymers of tyrosine-based polycarbonate and poly(alkylene oxide)  
Random block copolymers having the formula: ##STR1## wherein R 1 is --CHCH-- or (--CH 2 --) j , in which j is zero or an integer from one to eight; R 2 is selected from hydrogen, straight and...
5658994 Nonfunctionalized poly(arylene ether) dielectrics  
An article of manufacture comprising a dielectric material on a microelectronic device, such as an integrated circuit, wherein the dielectric material contains a poly(arylene ether) polymer...
5656716 Titanium-containing catalyst and process for the production of polyester  
The present invention comprises a new catalyst for the production of polyesters consisting essentially of a finely dispersed, large surface area titanium compound selected from hydrated TiO 2 ...
5656714 Polyester from terephthalic acid, 6-hydroxy-2-naphthoic acid, 4-hydroxybenzoic acid, 4,4'-biphenol and resorcinol  
An aromatic polyester having recurring monomer units derived from terephthalic acid, 6-hydroxy-2-naphthoic acid, p-hydroxybenzoic acid, 4,4'-biphenol, and resorcinol. This polyester is melt...
5654396 Polyimide oligomers  
We achieve solvent resistance and extended use life for advanced polyimides by including at least some solvent-resistant linkages in the backbone in place of phenoxyphenyl sulfone linkages and...
5652312 Redistribution of organic polyestercarbonate compositions  
Polyestercarbonates, particularly those containing aliphatic dicarboxylic acid-derived structural units, are redistributed by heating in the presence of a carbonate redistribution catalyst, and,...
5650479 Interfacially polymerized polyester films  
The present invention concerns a polyester gas separation membrane which is obtained by the interfacial polymerization of benzenetricarbonyl trihalide or benzene tetracarbonyl tetrahalide in a...
5648449 Copolyesters, molded articles from the same and aromatic triols used for producing the same  
A copolyester consisting essentially of ethylene terephthalate units and further comprising 0.01 to 1 mole % based on the sum of the moles of total diol units and the moles of triol units of a...
Matches 351 - 400 out of 1356 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >