Abstract: The invention relates to a method for storage and for transport of polyamide granulate which comprises at least one amorphous or microcrystalline polyamide. By means of this novel method, yellowing during further processing to form the moulded article can be avoided or at least reduced. Likewise, the invention relates to a corresponding container in which the polyamide granulate is stored. The invention also relates to correspondingly stored or transported polyamide granulate and also moulded articles produced therefrom.

Abstract: The present invention relates to a polymer, and a composition containing a particulate solid, an aqueous medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for millbases, dispersions, coatings and inks.

Abstract: This invention relates to a biaxially stretched product comprising a copolyamide comprising monomeric units of: aliphatic non-cyclic diamines X and aliphatic non-cyclic dicarboxylic acids Y or aliphatic non-cyclic ?,?-amino acids Z, and diamines M and diacids N in an amount between 0.1 to 2 wt % based on the total amount of copolyamide, and in which M and N are cyclic, and wherein the product has been stretched at a temperature of between the glass transition temperature (Tg) and the melting temperature (Tm). A method of preparation is claimed, as well as a multilayer film comprising the biaxially stretched product.

Abstract: The invention provides a polyamide having a dicarboxylic acid unit containing a decahydronaphthalenedicarboxylic acid unit in an amount of 60 mol % or more, and a diamine unit.

Abstract: Provided is a polyamide polymer in which a partial structure represented by the following formula (C) constitutes a portion of the main chain: wherein in Formula (C), RA and RB each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; n and m each independently represent an integer from 0 to 2; Cy represents an unsaturated 6-membered or 7-membered ring which may contain a heteroatom; and * and ** each represent a bonding hand, while * may be a bonding hand extending from RA.

Abstract: Processes for preparing crosslinked polymers using biomass derived materials, such as aldaric acids and derivatives, are provided. The polymers can be used as hydrogels.

Abstract: Higher diamondoid derivatives capable of taking part in polymerization reactions are disclosed as well as intermediates to these derivatives, polymers formed from these derivatives and methods for preparing the polymers.

Abstract: The invention provides a polyamide having a dicarboxylic acid unit containing a decahydronaphthalenedicarboxylic acid unit in an amount of 60 mol % or more, and a diamine unit.

Abstract: A method for making polyamide is described. More particularly, a method for making a polyamide from at least one diacid and one diamine, that includes a step of concentrating an aqueous solution of diacid and diamine salt up to a salt weight concentration higher than 85%, and a polymerization step up to a desired polymerization degree is described.

Abstract: Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in a process of preparing wholly aromatic polyamide polymer, a multiple tubular feed pipe for polymeric monomer and polymerization solvent with specific construction of adjacent inner paths 11a and outer paths 11b which are alternately arranged one another is used to feed either aromatic diacid chloride A or aromatic diamine dissolved in the polymerization solvent B into a polymerization reactor 20 through corresponding one among the inner and outer paths 11a and 11b. The present invention is effective to progress uniform and homogeneous polymerization over all of area of a polymerization reactor 20 leading to reduction of deviation in degree of polymerization, since polymeric monomers are miscible and react together very well immediately after putting the monomers into the reactor 20.

Abstract: A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films 109 comprises photoreactive polyimide and/or polyamic acid provided with an alignment control ability by irradiation of substantially linearly polarized light.

Abstract: An alignment layer according to an exemplary embodiment of the present invention includes a polyimide, wherein the polyimide is derived from a composition including a dianhydride-based compound, and a compound represented by a Chemical Formula 1: wherein, in the above Chemical Formula 1, X1 and X2 are independently F, Cl, or CN, and R1 is a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C1-C12 alkoxy group, a substituted or non-substituted C1-C12 halogen-containing alkyl group, a substituted or non-substituted C1-C12 halogen-containing alkoxy group, or a combination thereof.

Abstract: Disclosed is a polymer light-emitting device having a light-emitting layer arranged between an anode and a cathode, and a hole transport layer arranged between the light-emitting layer and the anode. This polymer light-emitting device is characterized in that the hole transport layer is a layer containing a polymer compound which contains a repeating unit represented by the general formula (I) below, a repeating unit represented by the general formula (II) below and a repeating unit represented by the general formula (III) below. (In the formula (I), R1, R2, R3 and R4 may be the same or different and respectively represent a hydrogen atom or the like; R5, R6, R7 and R8 may be the same or different and respectively represent an alkyl group or the like; and a, b, c and d may be the same or different and respectively represent an integer of 0-3. When a plurality of R5's, R6's, R7's and R8's are present, they may be the same as or different from one another.

Abstract: The present invention is directed to the use polycyclic diamines. These diamines, when polymerized with dianhydrides, and optionally other non-polycyclic diamines are used to form new polyamic acids. The polyamic acids can be imidized to form a new class of useful polyimide resins and polyimide films, particularly in electronics type applications.

Abstract: There is provided a fluorine-containing diamine represented by formula (1). In this formula, R1 represents a condensed polycyclic type aromatic hydrocarbon group, and at least one —C(CF3)2OH group and at least one —NH2 group are in a relation such that they are attached to adjacent carbons of carbon atoms constituting the condensed polycyclic type aromatic hydrocarbon group. Polymer compounds derived from this fluorine-containing diamine have superior low dielectric property and low water-absorbing property, and, in addition to that, shows low thermal expansion property and high glass transition temperature.

Abstract: The present invention is directed to the use polycyclic diamines. These diamines, when polymerized with dianhydrides, and optionally other non-polycyclic diamines are used to form new polyamic acids. The polyamic acids can be imidized to form a new class of useful polyimide resins and polyimide films, particularly in electronics type applications.

Abstract: The present invention provides a diamine compound polymer and a method for producing the diamine compound polymer. The diamine compound polymer of the present invention has a condensed aromatic group represented by the following formulae (1-1) and (1-2). A represents a structure represented by the following formula (II-1). Y and Z represent divalent hydrocarbon groups. B and B? each independently represents a group represented by —O—(Y—O)m-H or —O—(Y—O)m-CO-Z-CO—OR?, wherein R? is a hydrogen atom, an aralkyl group, an aryl group, or an aralkyl group. m represents an integer from 1 to 5; and p represents an integer from 5 to 5000. Ar represents a monovalent aromatic group. X represents a divalent condensed aromatic group. T represents a divalent linear hydrocarbon group having 1 to 6 carbon atoms or a divalent branched hydrocarbon group having 2 to 10 carbon atoms. k and n each represents an integer of 0 or 1.

Abstract: A monomer to produce polybenzimidazole is dissolved in polyphosphoric acid. For example, polysulfated phenylene sulfonic acid (acidic group-possessing polymer) is further dissolved in this solution. In this procedure, the acidic group-possessing polymer and the monomer are adsorbed to one another in accordance with the acid-base interaction. When the monomer is polymerized, for example, by means of dehydration polymerization in this state, then polybenzimidazole is synthesized, and the polybenzimidazole and the acidic group-possessing polymer are compatibilized with each other to produce a compatibilized polymer. When the compatibilized polymer is deposited as a solid, and the solid is separated from polyphosphoric acid, then the compatibilized polymer is obtained. A proton conductive solid polymer electrolyte as a final product is manufactured by forming the compatibilized polymer to have a predetermined shape.

Abstract: The invention pertains to a coating composition comprising a compound comprising at least one bicyclo-orthoester group and at least one other functional group. The invention also comprises a process for curing the present coating composition. Further, a process for making a bicyclo-orthoester-functional compound from the corresponding oxetane compound is described.

Abstract: A polyamide characterized in that the polyamide is obtained by thermal polycondensation of (a) dicarboxylic acid components comprising 10 to 80% by mole in total carboxylic acid components of 1,4-cyclohexanedicarboxylic acid having a trans/cis molar ratio of 50/50 to 97/3 and (b) an aliphatic diamine component is disclosed. The alicyclic polyamide having 1,4-cyclohexanedicarboxylic acid in a backbone thereof as a dicarboxylic acid unit, which is suitable as materials for various uses such as automotive parts, electric/electronics parts, industrial materials, engineering materials and daily household goods, and superior in heat resistance, low water absorption, light resistance, moldability and light weight, as well as superior in toughness, chemical resistance and appearance, and molded articles thereof.

Abstract: Higher diamondoid derivatives capable of taking part in polymerization reactions are disclosed as well as intermediates to these derivatives, polymers formed from these derivatives and methods for preparing the polymers.

Abstract: There are disclosed polybenzoxazole precursors which can be processed by centrifugal techniques, which can be cyclized to polybenzoxazoles on substrates without difficulty, and which after cyclization to polybenzoxazoles exhibit a high temperature stability. In particular, these precursors and the polybenzoxazoles prepared from them possess high resistance against the diffusion of metals.

Abstract: Blooming and/or syneresis in gel formulations can be reduced or eliminated by adding to an organic mixture an effective amount of a polyamide gelling agent having a softening point of less than about 105° C. wherein the polyamide is the reaction product of one or more diamines, optionally one or more mono-amines, one or more hydrogenated C36 dimer acids, optionally one or more C2-22 dicarboxylic acids, and optionally one or more C2-22 monocarboxylic acids.

Abstract: A method of production of a homopolymer or copolymer or homo-oligomer or co-oligomer product characterised in that the product is obtained by condensation reaction of a diaminoanthracene, substituted or not, optionally with a diiminoanthracene substituted or not in the absence of anthraquinone substituted or not.

Abstract: A coating powder comprising a macrocyclic oligomer and a ring-opening polymerization agent is applied to an article, fused, and converted to a linear polymer at a temperature of from about 160 to about 400° C. The powder has the low melt viscosity and friability of a thermoset powder but is converted at high fusing temperatures to a tough coating having the good impact resistance and good elongation of a thermoplastic powder. The oligomer is a polyester, polycarbonate, polyamide, polyimide, polyamideimide. The article may be coated electrostatically or in a fluidized bed.

Abstract: Benzobisazole polymers having repeating units of the formula wherein Z is wherein X is —S—, —O— or —NH—.

Abstract: This invention relates to: (a) fluorene copolymers comprising at least 10% (by residual monomeric units) of 9-substituted and/or 9,9-disubstituted fluorene moieties and at least two other monomeric units containing delocalized p-electrons, (b) polymer blends comprising at least 10 weight % of a copolymer specified in (a), and (c) electronic devices (such as polymer light emitting diodes) containing one or more films derived from these copolymers.

Abstract: The present invention provides PMR-type polyimides that exhibit lower melt viscosities than PMR-type polyimides of the prior art. These PMR-type polyimides are created by incorporating flexible linkages, such as kinked structures and twisted or non-coplanar moietes into the backbone structure of the PMR. Specifically, the present invention provides for the production of PMR-type polyimides having 2,2′-disubstituted biaryls in the polymer backbone.

Abstract: An inherently light- and heat-stabilized polyamide has at least one piperidine compound bonded to the backbone polymer chain and at least one 4-amino-2,2,6,6-tetramethylpiperidine compound bonded to the backbone polymer chain. The inherently light- and heat-stabilized polyamide may be used to form articles such as, for example, fibers, carpets, yarns, and textile fabrics.

Abstract: An ester-terminated dimer acid-based polyamide may be blended with a solvent to form a gel. The solvent may be flammable, and a wick may be added to the resulting gel so as to form a candle. Depending on the composition, the candle may be formed into a free standing pillar, or may be better suited to being placed in a container. The solvent may be mineral oil. A solid coating may be placed around the candle, for advantages including to enhance the mechanical stability of the gelled body, and to eliminate the tendency of a gel to have an oily feel and to accept noticeable fingerprints. The solvent which, in combination with the ester-terminated dimer acid-based polymer forms a gel, may be or include a fragrance material, an insecticide or an insect repellent. A wick may or may not be present in this gel, but in any event, the composition provides for the release of the fragrance, insecticide or insect-repellent.

Abstract: A polyamide composition which is amorphous and transparent, which has reduced flammability, and which has reduced migration of flame-retardant additive so that it is film-free, includes at least one polyamide which contains cycloaliphatic monomer units and which is amorphous and transparent; and a flame-retardant additive which is present in an amount effective to reduced flammability of the polyamide composition, which is dissolved in the at least one polyamide, and which is at least one alkyl phosphonic acid compound having a general formula: ##STR1## wherein R and R' each represent, independent of each other, an alkyl group having from 1 to 4 carbon atoms, and x=0 or 1. An article molded from this composition is transparent, has reduced flammability, and has reduced migration of flame-retardant additive so that it is film-free.

Abstract: A copolyamide composition prepared from hexamethylene diamine and either mixtures of adipic acid and terephthalic acid, or mixtures of adipic acid, terephthalic acid and isophthalic acid, has a melting point below 320.degree. C., a glass transition temperature between 100.degree. C. and 120.degree. C. and physical properties similar to nylon 66.

Abstract: Colorless, amorphous polyamide, or blends or alloys thereof, and the molded articles with high alternate bending strengths are made available; they are preferably made up of unbranched aliphatic diamines and cycloaliphatic dicarboxylic acids, and have high strength, high rigidity, high heat distortion, and good solvent resistance.

Abstract: 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 acids, aromatic hydroxycarboxylic acids, and optionally aliphatic diols. The polymers are particularly useful as films and in multilayer structures as barrier layers because of their relatively low permeability to various compounds.

Abstract: 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 substituted to different phenyl rings of the fluorene moiety.

Abstract: A process for producing fibers or films by the steps of:a) preparing an aromatic polyamide by polycondensation of dicarbonyl dihalides or mixtures thereof with at least two diamines in N-alkyllactams as a solvent, the polycondensation being of at least 90 mol %, based on the total amount of dicarbonyl dihalides in the reaction mixture, of compounds of the formula I or mixtures of such compoundsHal--OC--Ar.sup.1 --CO--Hal (I)with at least 90 mol%, based on the total amount of diamines in the reaction mixture, of compounds of the formula II and optionally III or mixtures of such compoundsH.sub.2 N--Ar.sup.2 --NH.sub.2 (II), H.sub.2 N--Ar.sup.3 --NH.sub.2 (III)where Ar.sup.1, Ar.sup.2 and Ar.sup.

Abstract: Novel conjugated amino substituted phenylene polymers are disclosed having on-linear optical properties, and which can be converted to electrically conductive polymers. Such polymers are produced by reacting a novel bis-cycloalkylene sulfonium salt of 2,5,N,N-tetramethylaniline hydrochloride, such as 2,5-(N,N-dimethyl)aniline hydrochloride dimethylene bis-(tetramethylene sulfonium chloride) with alkali metal hydroxide to form a cycloalkylene sulfonium salt precursor polymer, and then heating the precursor polymer under conditions to produce the amino substituted phenylene vinylene polymer, such as poly(2-(N,N-dimethylamino) phenylene vinylene). The polymers can also be made directly by treatment of the bis chlormethyl dimethyl aniline hydrochloride derivative with alkali metal alkoxide.

Abstract: An aramid composition consisting essentially of repeat units derived from p-phenylenediamine, terephthalic acid, 3,3'-bibenzoic acid, and optionally chloroterephthalic acid, is disclosed. The aramids are especially useful for fibers, which after drawing usually have enhanced tensile moduli and strengths, which makes them especially useful in ropes and cables, and in composites.

Abstract: A process for producing an aromatic polyamide film, which comprises the steps of: (a) forming a thin layer of an optically isotropic dope in which an aromatic polyamide is dissolved in a polar amide, (b) immersing the thin layer dope of aromatic polyamide in a polar solvent, other than said polar amide, kept at a temperature not higher than -20.degree. C. to prepare a film, and (c) drying the film. The aromatic polyamide film thus obtained is excellent in transparency. Said process requires neither a step of dissolving an aromatic polyamide in conc. sulfuric acid nor an acid-resistant equipment, and hence, is inexpensive.

Abstract: Aromatic copolyamides, production thereof, formed structures and production thereofDescribed are aromatic copolyamides comprising the structural repeat units of the formulae I, II and III ##STR1## where Ar.sup.1, Ar.sup.2, Ar.sup.3 and Ar.sup.

Abstract: Novel difunctionalized cyclobutabenzene monomers of the general formula: ##STR1## wherein Z can be hydrogens or a cyclobutane ring; and X and Y are carboxyl, amino, alcohol, isocyanate, acid halide, or bis-acyl halide groups. Exemplary difunctional bitricyclodecatriene monomers are [2,2'-bidicyclo[2.4.0]octa-1,3,5-triene]-5,5'-dicarboxylic acid (BXTA) and [2,2'-bitricyclo[6.2.0.0]deca-1,3,(6),7-triene]-7,7'-dicarboxylic acid (QXTA). The difunctionalized bitricyclodecatriene monomers can form part of a polymer backbone chain in which the multiple butane ring functionalities can be easily opened to produce strong, three-dimensional covalent bond crosslinking between polymer chains. The crosslinking can be induced simply by heating the polymer to a temperature in excess of 250.degree. C.

Abstract: Xanthene polyesters and polyamides are provided resulting from the reaction of alkylene, cycloaliphatic or aromatic diols or organo diamines with xanthene dicarboxylic esters or xanthene dicarboxylic acid halides. These amorphous, or crystalline film forming, high performance thermoplastics which are useful in automotive applications, and include copolymers and blends of such xanthene polymers.

Abstract: Alcohol-soluble aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein x has a value of 0.05 to 0.50 and y has a value of 1.0-x. These copolymers are useful in the preparation of organic/inorganic hybrid materials having transparency which comprise the sol-gel derived, hydrolytically condensed reaction product of a metal alkoxide of the formula M(OR).sub.w wherein R is a lower alkyl group, M is Si, Ti, Al or a mixture thereof, and w is the valence value of M, and the above copolymer.

Abstract: Alcohol-soluble, aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein x has a value of 0.10 to 0.90 and y has a value of 1.0-x. These copolymers are useful in the preparation of organic/inorganic hybrid materials having transparency which comprise the sol-gel derived, hydrolytically condensed reaction product of a metal alkoxide of the formula M(OR).sub.w wherein R is a lower alkyl group, M is Si, Ti, Al or a mixture thereof, and w is the valence value of M, and the above copolymer.

Abstract: Alcohol-soluble aromatic heterocyclic polymers having repeating units of the formula: ##STR1## wherein X is --O-- or --S--, and R is selected from the group consisting of: ##STR2## and R' is selected from the group consisting of alkyl having 1 to 5 carbon atoms, alkaryl having 7 to 12 carbon atoms, aralkyl having 7 to 12 carbon atoms and substituted aromatic having 1 to 3 substituent groups.The alcohol-soluble polymers may be used for fabricating organic/inorganic hybrid composites with metal alkoxides M(OQ).sub.v, wherein M is Si, Ti, Al or the like and Q is a lower alkyl group. These polymers can also be used to coat materials or substrates which are susceptible to attack by highly corrosive acids. On drying, the ionic bond between the trialkylamine and the sulfo group is broken and the polymer reverts to the parent structure, thereby leaving a polymer coating. Yet further, the original amine can be exchanged with a less volatile amine or an amine having a desired functionality.

Abstract: A process is described for preparing directly spinnable polymer solutions containing as fiber-forming substance polymers containing at least 95 mol %, based on the polymer, of the recurring structural unit of the formula I[--CO--R.sup.1 --CO--NH--R.sup.2 --NH--] (I)and up to 5 mol % of structural units as formed in the conversion/reaction of aromatic, aliphatic or cycloaliphatic dicarbonyl dichlorides and/or diamines. R.sup.1 and R.sup.2 are independently of each other 1,6-naphthylene, 1,7-naphthylene, 2,7-naphthylene, 3,4'-biphenyldiyl or 1,3-phenylene. The polymers prepared by reacting diamines of the formula (II) with dicarbonyl dichlorides of the formula (III) in solutionH.sub.2 N--R.sup.2 --NH.sub.2 (II)ClOC--R.sup.1 --COCl (III)The process contains the steps ofa) presenting the diamines as initial charge in the form of a solution in N-methylpyrrolidone,b) adding the dicarbonyl dichlorides to this solution,c) using starting monomers having a purity of greater than 99.

Abstract: Novel difucntionalized cyclobutabenzene monomers of the general formula: ##STR1## wherein Z can be hydrogens or a cyclobutane ring; and X and Y are carboxyl, amino, alcohol, isocyanate, acid halide, or bis-acyl fluoride groups. In a particularly preferred embodiment, the cyclobutabenzene derivative is 1,2-dihydrocyclobutabenzene-3,6-carboxylic acid. The difunctionalized cyclobutabenzene monomer can form part of a polymer backbone chain, but has an additional functionality, the butane ring, which can be easily opened to produce strong, covalent bond crosslinking between polymer chains. The crosslinking can be induced simply by heating the polymer to a temperature in excess of 300.degree. C.

Abstract: Copolyamides having high crystallinity over the whole composition range, a melting enthalpy .DELTA.H>3.5 cal/g and a melting point T.sub.M higher than 270.degree. C. and articles manufactured therefrom are disclosed, said copolyamides comprising, by moles:a) 1 to 99% of a unit A of formula--(NH--R--NHCO--AR.sub.1 --CO)--in which R is a --(CH.sub.2).sub.n --carbon chain where n is coma) between 4 and 20, and AR.sub.1 is the residue from the condensation of terephthalic acid and/or of the diester form thereof; andb) 99 to 1% of a unit B of formula--(NH--R--NHCO--AR.sub.2 --CO)--in which R is the same carbon chain as in unit A and AR.sub.2 is the residue from condensation of naphthalene-2,6-dicarboxylic acid and/or the diester form thereof.

Abstract: Aramids having repeat units derived from p-phenylenediamine, 4,4'-bis(3-aminophenoxy)biphenyl and terephthalic acid. These aramids have good strength properties, particularly after drawing, and good high temperature properties. The aramids are useful for fibers and films.

Abstract: Use of fluorinated aromatic polyamides as orientation layer for liquid crystal switching and display devicesUse of substituted aromatic polyamides as orientation layer in liquid crystal switching and display elements is described, in which the polyamides contain structural units of the formula (I) ##STR1## in which in formula I the symbols have the following meaning: ##STR2## in which R.sup.1 and R.sup.2 are identical or different and are perfluorinated alkyl having 1 to 4 carbon atoms, R.sup.3 and R.sup.4 are identical or different and are H or CF.sub.3, and in which --W-- is, for example, --O--, --C(CH.sub.3).sub.2 --, --C(CF.sub.3).sub.2 --.Orientation layers made of these polyamides can be cured at low temperatures, have good adhesion and high transmittance and allow for a high surface tilt angle.