Abstract: The present invention generally relates a polymer-metal junction comprising PEEK-PEoEK copolymers compositions, in contact with at least a part of the surface of a metal substrate, wherein the PEEK-PEoEK copolymer having RPEEK and RPEoEK repeat units in a molar ratio RPEEK/RPEoEK ranging from 95/5 to 5/95. The present invention also relates to shaped articles including the polymer-metal junction, and methods of making the polymer-metal junctions.

Abstract: Provided is a liquid crystal polyester amide resin which has a good hue. Specific monomers are polymerized using a specific catalyst. The specific monomers are composed of: at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines; and at least one kind of a monomer selected from among aromatic hydroxy carboxylic acids, aromatic dicarboxylic acids or aliphatic dicarboxylic acids, and aromatic diols or aliphatic diols. It is preferable that the content of the at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines is from 0.1 mol % to 85 mol % (inclusive).

Abstract: A polyester resin toner binder which gives a toner with good anti-blocking property at high temperature and high humidity and good low-temperature fixing ability. The present invention is directed to a toner binder for developing electrostatic charge images, which binder comprises a condensation-polymerization polyester resin, the polyester resin being a product formed in the presence of a catalyst (a) represented by the following general formula (I): Ti(—X)m(—OR)n??(I) wherein R, X, m and n are as defined herein.

Abstract: A polycondensation reaction mixture is disclosed which includes a catalyst, acyclic esters, ethylene glycol, and water. The catalyst is a titanium atrane. The polycondensation reaction mixture is prepared by the steps of (a) contacting a solution comprising a titanium (IV) alkoxide compound and a first solvent with an organic acid; (b) contacting the solution formed in step (a) with a substituted or unsubstituted trialkanolamine to form an impure catalyst; (c) purifying the impure catalyst to form the titanium atrane catalyst; and (d) bringing the catalyst into contact with the acyclic esters under conditions that produce the ethylene glycol and water.

Abstract: Disclosed is a process for preparing a compound of the formula wherein R1 and R1?, R2 and R2?, and R3 are as defined herein, said process comprising (I) reacting a diacid of the formula HOOC—R2—COOH with a diamine of the formula H2N—R3—NH2 to form an acid-terminated oligoamide intermediate of the formula HOOC—R2—CONH—R3—HNCO—R2?—COOH; and (II) reacting the acid-terminated oligoamide intermediate with a monoalcohol of the formula R1—OH in the presence of a tin or organic titanate catalyst, in the absence of a coupling agent, and in the absence of a solvent to form the product. Also disclosed is a composition prepared by the process.

Abstract: A polyester resin toner binder which gives a toner with good anti-blocking property at high temperature and high humidity and good low-temperature fixing ability. The present invention is directed to a toner binder for developing electrostatic charge images, which binder comprises a condensation-polymerization polyester resin, the polyester resin being a product formed in the presence of a catalyst (a) represented by the following general formula (I): Ti(—X)m(—OR)n??(I) wherein R, X, m and n are as defined herein.

Abstract: Exemplary embodiments provide compositions for erasable media and methods of forming polymers for erasable media. The method can include providing a first monomer, the first monomer including one or more alkoxylated bisphenols and adding at least one second monomer and a catalyst to the first monomer to form a mixture at a first temperature, the second monomer selected from the group consisting of an organic diacid, a dialkyl ester of the organic diacid, and combinations thereof. The method can also include melt condensing the mixture by increasing the temperature from the first temperature to a second temperature over a first amount of time to form one or more polymers, wherein the one or more polymers has an acid value in the range of about 0.1 mg-KOH to about 12 mg-KOH.

Abstract: A promoter for a polycondensation reaction used together with a catalyst in a polycondensation reaction, the promoter for a polycondensation reaction comprising a pyrogallol compound having a benzene ring of which three hydrogen atoms adjacent to each other are substituted by hydroxyl groups; and a polycondensation resin obtained by polycondensing raw material monomers using the promoter as defined above and the catalyst. A polycondensation resin can be produced using the promoter of the present invention together with a catalyst in a polycondensation reaction, and the polycondensation resin can be used in various applications including, for example, films, sheets, fibers, toner materials for electrophotography, and the like.

Abstract: The present invention provides carboxy-terminated oligomeric polyester compositions useful in the preparation of “weatherable” polymeric materials, for example weatherable copolyestercarbonates. In one aspect the present invention provides an oligomeric polyester composition comprising structural units derived from at least one diacid, at least one diaryl carbonate and at least one diol. The structural units derived from the diacid are present in a molar excess of from about 10% to about 40% based on a ratio of moles of diacid-derived structural units to moles of diol-derived structural units present in the oligomeric polyester composition. The oligomeric polyester composition is further characterized by the presence of at least some phenoxy end groups.

Abstract: A promoter for a polycondensation reaction used together with a catalyst in a polycondensation reaction, the promoter for a polycondensation reaction comprising a pyrogallol compound having a benzene ring of which three hydrogen atoms adjacent to each other are substituted by hydroxyl groups; and a polycondensation resin obtained by polycondensing raw material monomers using the promoter as defined above and the catalyst. A polycondensation resin can be produced using the promoter of the present invention together with a catalyst in a polycondensation reaction, and the polycondensation resin can be used in various applications including, for example, films, sheets, fibers, toner materials for electrophotography, and the like.

Abstract: The object is to provide liquid crystalline polyester which gives molded articles without generating acetic acid gas, and a method for producing the liquid crystalline polyester. This object is achieved by a method for producing a liquid crystalline polyester comprising melt-polymerizing aromatic hydroxycarboxylic acid represented by the formula (I), aromatic diol represented by the formula (II), and aromatic dicarboxylic acid represented by the formula (III) with using a diaryl carbonate represented by the formula (IV).

Abstract: A process for producing a liquid crystalline polymer with increased polymerization rate and reduced deposition of monomer-derived substances to the reaction vessel during production is provided. A liquid crystalline polymer having a constituent unit derived from 4-hydroxybenzoic acid in an amount 8 mol % or less is produced by conducting reaction at the presence of a catalytic amount of a catalyst comprising a potassium compound and a trivalent cobalt compound in combination.

Abstract: A process for producing a wholly aromatic polyester which is excellent in heat resistance, mechanical properties and yet color and has a high degree of polymerization by melt polymerizing a dicarboxylic acid and a diol directly on an industrial scale at a low cost in a short period of time without esterifying the dicarboxylic acid or diol in advance. To produce the wholly aromatic polyester by reacting and molding an aromatic dicarboxylic acid such as terephthalic acid, an aromatic diol such as 2,2-bis(4-hydroxyphenyl)propane and a diaryl carbonate by heating, a combination of a specific pyridine compound and an alkali metal (bi)carbonate, a combination of a specific pyridine compound and an organic tin compound or a specific titanium compound is existent as a catalyst. Thereby, the wholly aromatic polyester having the above properties is obtained.

Abstract: A molten product of a wholly aromatic polyester carbonate or wholly aromatic polyester and an aromatic polycarbonate, which is rarely colored even when it is molten at a high temperature. This molten product is used for the production of car parts and electric and electronic parts.

Abstract: A process for producing a wholly aromatic polyester which is excellent in heat resistance, mechanical properties and yet color and has a high degree of polymerization by melt polymerizing a dicarboxylic acid and a diol directly on an industrial scale at a low cost in a short period of time without esterifying the dicarboxylic acid or diol in advance.

Abstract: An improved process for the preparation of high molecular weight, linear polyester resins comprises reacting an aromatic dicarboxylic acid with an excess of an alkane diol under conditions effective to reach the clearing point of the reaction; pre-condensing the cleared reaction mixture under conditions effective to produce oligomers having an intrinsic viscosity measured in 60/40 phenol/1,1,2,2-tetrachloroethane at 25° C. of less than about 0.70 deciliters/gram and a carboxylic acid end group level of less than or equal to about 100 milliequivalents per kilogram; and polycondensing the oligomer under conditions effective to produce a linear polyester resin having an intrinsic viscosity less than or equal to about 2.0 dl/g as measured in 60/40 phenol/1,1,2,2-tetrachloroethane by weight at 25° C. and a carboxylic acid end group level of about 10 to about 40 milliequivalents per kilogram.

Abstract: Disclosed is a select class of liquid crystalline polyesters and molding compositions comprising the polyesters and glass fiber. The liquid crystalline polyesters consist essentially of (1) diacid residues consisting essentially of (i) cyclohexanedicarboxylic acid residues and (ii) other diacid residues selected from terephthalic acid residues, 2,6-naphthalenedicarboxylic acid residues, or a mixture thereof; (2) diol residues consisting essentially of hydroquinone residues, 4,4′-biphenol residues or a mixture thereof; and, optionally, (3) p-hydroxybenzoic acid residues. In the above definition, the moles of diol residues are equal to the moles of diacid residues and the total of the (1), (2) and (3) mole percentages is equal to 100. The liquid crystalline polyesters have melting points determined by differential scanning calorimetry equal to or less than 360° C.

Abstract: A branched polyester resin of the Formula wherein n and m represent randomly repeating segments, and the number of n and m segments in the polymer backbone are each of from about 10 to about 10,000; X is an alkylene group, an olefinic group, or an arylene; Y is an organic dioxy group or radical of I, II, or mixtures thereof; Z is an organic trioxy radical of III, IV, or mixtures thereof; and wherein R and R1 is a hydrogen atom or an alkyl group; G is an alkylene or arylene group, and a is 0 or 1.

Abstract: A 1,3-propanediol-based aromatic polyester such as polytrimethylene terephthalate is modified by reaction with a hindered phenolic acid or ester to provide an endcapped polyester which has improved resistance to generation of acrolein when heated in air.

Abstract: A branched polyester resin of the Formula wherein n and m represent randomly repeating segments, and the number of n and m segments in the polymer backbone are each of from about 10 to about 10,000; X is an alkylene group, an olefinic group, or an arylene; Y is an organic dioxy group or radical of I, II, or mixtures thereof; Z is an organic trioxy radical of III, IV, or mixtures thereof; and wherein R and R1 is a hydrogen atom or an alkyl group; G is an alkylene or arylene group, and a is 0 or 1.

Abstract: A potassium catalyst is used in combination with a cobalt catalyst to increase the reaction rate and/or reduce the reaction temperature of a melt polymerization process for producing an anisotropic melt-phase forming polymer derived from p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, aromatic hydroxycarboxylic acid, aromatic diol, at least a portion of which is resorcinol and at least one aromatic dicarboxylic acid, compared to a like process wherein either catalyst is used alone.

Abstract: Disclosed are polymers and copolymers containing at least one repeating unit of the formula ##STR1## in which X is O or NH; R is a single bond or a hydrocarbon chain; R' is a hydrocarbon chain containing one or two carbon atoms, and P is the residue of an oligomer HX--P--XH whose solution viscosity determined in meta-cresol at 30.degree. C. at concentrations of 0.5 g/dl is lower than 0.50 dl/g.sup.-1. Also disclosed is a process for obtaining the polymers and copolymers.

Abstract: The yield of fully substituted, multidimensional aromatic hubs in the condensation of hydroxyl and acid halide functionalities is improved by adding a thallium catalyst, such as thallium ethoxide (T1-OC.sub.2 H.sub.5), in the solvent.

Abstract: The present invention relates to a polymerization method for preparing non-halogenated aromatic polyesters by a standard interfacial polymerization except the addition of a phase-transfer catalyst to the organic phase. More specifically, the present invention offers a method for substantially reducing the polymerization time and improving the reaction yield, by introducing a specific phase transfer catalyst, tetrabutyl ammonium bromide, to the organic phase.

Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.

Abstract: Disclosed is a process for the preparation of polyester having an ethylene-terephthalate recurring-unit in the amount of not less than 60 molar % of the total recurring-unit of the polyester by polymerizing a bifunctional carboxylic acid comprising terephthalic acid and glycol comprising ethylene glycol in the presence of an antimony compound, at least one metal compound selected from the group consisting of a glycol-soluble magnesium compound, a glycol-soluble manganese compound and a glycol-soluble zinc compound, a hindered phenol compound, and a sulphur-containing ester compound, wherein the metal compound, the hindered phenol compound and a sulphur-containing ester compound are employed under the following conditions:0.015.ltoreq.A.ltoreq.0.15 (I)0.01.ltoreq.B.ltoreq.0.2 (II)0.01.ltoreq.C.ltoreq.0.2 (III)0.5.ltoreq.B/C.ltoreq.2.

Abstract: Novel cyclic imino ether compositions containing one or more mesogenic moieties, when polymerized, result in products having improved properties.

Abstract: The present invention is directed towards a process for preparing non-liquid crystalline phenol-terminated diester compositions characterized by the structure of formula 1: ##STR1## wherein R is an aliphatic divalent hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, provided however that R contains at least about 8 carbon atoms when n is 0 and p is 0, R.sub.1 is an aliphatic or cycloaliphatic hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, R.sub.2 is an aliphatic, aromatic or a mixture of aliphatic and aromatic hydrocarbon radicals having from 2 to 40 carbon atoms, A is divalent aromatic radical selected from the group consisting of phenylene, naphthylene or his phenylene, p is 0 or 1, n is 0 or an integer ranging from 1 to about 40, provided however, that p is 0 when n is 0 and p is 1 when n is an integer.

Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.

Abstract: A polyarylamine polymer represented by the following formula: ##STR1## wherein: n is between about 5 and about 5,000p is between about 0 and about 5,000X' and X" are independently selected from a group having bifunctional linkages,Q is a divalent group derived from certain hydroxy terminated arylamine reactants, andQ' is a divalent group derived from a hydroxy terminated group.

Abstract: A process for preparing a polyetherimide-polyimide copolymer by (a) reacting a bis (ether anhydride) with a stoichiometric excess of an organic diamine in an inert, non-polar solvent to form an amine-terminated oligomer-solvent mixture; (b) removing unreacted organic diamine from the oligomer-solvent mixture; and (c) reacting the oligomer with an aromatic dianhydride.

Abstract: A method for preparing high molecular weight polyethermide polymers in a dual solvent system is disclosed. The inventive method provides for polymerizing a diamine monomer and a dianhydride monomer in a solvent system comprised of at least two solvents, a first solvent is selected for its solubility characteristics such that the polyethermide polymer is highly soluble therein and a second solvent is selected for its relatively high boiling point characteristics such that when the second solvent and first solvent are mixed together, the boiling point of the dual solvent system is at least as high as the temperature at which polymerization of said monomers occurs. In one embodiment, a diamine monomer of 4,4'-sulfonyl dianiline (SDAN) is reacted with a dianhydride monomer of bisphenol A dianhydride (BPADA) in the presence of a catalyst and a chain stopper in a dual solvent system comprised of chloroform and ortho-dichlorobenzene. The resulting polyethermide has an intrinsic viscosity exceeding 0.

Abstract: Polyarylene ether-polyalkenamer copolymers are provided by effecting a ring-opening metathesis polymerization (ROMP) of a cycloalkene such as, cyclooctene in the presence of a polyarylene ether having an ester link cycloalkenyl group. An effective amount of a metallic catalyst, such as an osmium or a ruthenium halide, can be used to catalyze the metathesis.

Abstract: Disclosed is a process for the preparation of poly(ester-carbonates) wherein (1) an aromatic diol, (2) methyl phenyl carbonate and (3) an alkyl carboxylate ester component selected from an aromatic dicarboxylate ester, a hydroxy aromatic carboxylate ester or a mixture thereof are contacted in the presence of a transesterification/polycondensation catalyst under transesterification/polycondensation conditions of pressure and temperature.

Abstract: Films from aromatic polyesters and from aromatic polyestercarbonates are excellently suitable for preparing printing ribbons, in particular for thermal and electrothermal recording processes.

Abstract: New aromatic compounds containing at least one cyanate ester and at least one propargyl ether group, each independently directly attached to a ring carbon atom(s), are useful in the preparation of resins having a low dielectric constant.

Abstract: This invention relates to imparting gray, blue, or purple tints to aromatic copolyester compounds. This is accomplished through the addition of a cobalt-containing compound such as cobalt carbonate, cobalt acetate, cobalt benzoate, or cobalt phenate to the polyester forming reaction system.

Abstract: Polyarylates formed by reacting the diester of a dihydric phenol such as bisphenol-A and at least one aromatic dicarboxylic acid in the presence of an esterification catalyst is provided with improved color by the addition of cobalt during polymerization. The amount of cobalt can be reduced and an additional amount of an ultramarine blue pigment can be added to the reaction mixture to maintain the color improvement.

Abstract: Improved polyarylate color is achieved by dissolving in the polyarylate-forming reaction mixture a cobalt salt of an ester of a C.sub.3 to C.sub.20 aliphatic or iso-aliphatic hydrocarbon. The cobalt salt is preferably predissolved prior to addition to the reaction mixture.

Abstract: Transesterification curing of ester polymers and hydroxyl polymers is effected by the inclusion of a transesterification catalyst comprising a catalytic amount of epoxy resin and certain inorganic salts.

Abstract: A polyester resin for toner, which consists essentially of (a) from 5 to 60 equivalent %, based on the entire carboxylic acid components, of at least one member selected from the group consisting of tribasic and higher polybasic carboxylic acids, anhydrides thereof and lower alkyl esters thereof, (b) at least one member selected from the group consisting of dicarboxylic acids and lower alkyl esters thereof, (c) at least one aromatic diol and (d) at least one aliphatic diol, and which has a softening temeprature of from 100.degree. to 170.degree. C., a glass transition temperature (Tg) of from 50.degree. to 70.degree. C., an acid value of from 0.5 to 10 mgKOH/g and a gel content of from 3 to 40%.

Abstract: Aromatic polyesters based on phenoxyterephthalic acid, a method of manufacturing the same, and applications of the same. The inventive polyesters are based on phenoxyterephthalic acid, one or more other aromatic dicarboxylic acids, a dihydroxyaryl compound (with 2 OH groups attached to an aromatic ring), and an hydroxyaromatic carboxylic acid, are partially crystalline, form an anisotropic melt phase, and are processible at up to 360.degree. C. The polyesters may be used for manufacturing pieces formed by molding, extrusion, or other standard forming techniques.

Abstract: Thermotropic, fully aromatic polyesters based on p-hydroxybenzoic acid, aromatic dicarboxylic acid and diphenol in which the dicarboxylic acid groups consist at least in part of 3,3'-diphenyldicarboxylic acid groups have excellent mechanical properties, in particular excellent elongation at break.

Abstract: The intercondensation of aryldiamine and a mixture of oxydiphthalic anhydride and aromatic bis(ether anhydride), such as 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]-propane dianhydride, have been found to provide tough flexible transparent copolymer having T.sub.g 's from about 217.degree. C. to 300.degree. C.

Abstract: Described herein is an improved process for preparing poly(aryl ether ketones) by reacting nucleophilic coreactants with electrophilic coreactants under Friedel Crafts polymerization conditions, wherein the improvement comprises carrying out the polymerization in a solvent comprising 1,2-dichlorethane.

Abstract: Described herein is a process for stabilizing a poly(aryl ether ketone) produced by a Friedel-Crafts polymerization process which comprises adding a nucleophilic and/or an electrophilic capping agent during the polymerization.

Abstract: A novel resinous binder composition is disclosed for a magnetic recording tape or like media. Magnetic particles are dispersed within a resinous matrix having both a "hard" and a "soft" component. The "hard" component is fabricated by exposing a resin capable of being cured by electron beam irradiation.The magnetic recording media coating is very apt for use with harsh pigment like CrO.sub.2 particles and is adapted for frequent contact with a head, being adapted to exhibit good durability, abrasivity, etc. by virtue of using a lubricant system including a fluoro-silicone oil and a compatible fatty-acid-ester like butoxy ethyl stearate.

Abstract: The preparation of poly(arylene ketones) and in particular all para-linked poly(arylene ether ketones) by Friedel-Crafts polymerization in the presence of a Lewis acid generally results in an intractible reaction product difficult to remove from the reaction vessel and difficult to purify. The addition of a liquefaction agent, such as a hydrogen halide and in particular hydrogen chloride, to the reaction mixture, results in a tractible gel or a liquid which can be readily handled. The hydrogen halide is preferably under pressure and a diluent may also be added along with the hydrogen halide.

Abstract: The invention relates to completely aromatic polyesters in which at least one end of the molecular chains is composed of the radicals ##STR1## The invention also relates to a process for the preparation of polyesters of this type and to the shaped articles produced therefrom.The polyesters according to the invention are also open to subsequent solid-phase condensation.

Abstract: Polyesters having at least 90%, by weight, of recurrent structural units corresponding to the following formula: ##STR1## and characterised by a relative viscosity.eta..sub.rel of from 1.6 to 4.5 (determined at 25.degree. C. in CH.sub.2 Cl.sub.2, c=5 g/l) are suitable for the production of films having highly advantageous performance characteristics, in particular high heat resistance.