Abstract: A modified cyanate ester group curable resin composition, and varnishes, prepregs, laminated boards adhered with metal foil, films, printed circuit boards, and multilayered circuit boards using the same, comprising: (A) a cyanate ester group compound expressed by chemical formula (1), (where, R1 is and respective of and R2 and R3 is any one of hydrogen or methyl group, and the both can be the same or different from each other, (B) a monovalent phenolic group compound expressed by chemical formula (2), or formula (3), where R4 and R5 is any one of hydrogen atom or low alkyl group having 1 to 4 carbon atoms, and the both can be the same or different from each other, n is a positive integer of 1 or 2.  (where, R6 is or  (C) a polyphenylene ether resin,  (D) a flame retardant not reactive with the cyanate ester group compound, and  (E) a metal group reaction catalyst.

Abstract: The present invention provides: a process for producing a high molecular weight thermoplastic resin composition, which can give the high molecular weight thermoplastic resin composition with good reproducibility and stably; and uses of the resultant resin composition. The process for producing a high molecular weight thermoplastic resin composition comprises the step of mixing a thermoplastic resin with pyromellitic dianhydride to carry out a reaction therebetween to convert the thermoplastic resin into a high molecular weight one, and this process is characterized in that the pyromellitic dianhydride has at least one of the following properties in particle form: (1) intrinsically linear or needle-like particle forms; (2) a bulk density of 0.4˜0.9 g/ml; and (3) a rest angle of 50˜70 degrees.

Abstract: A catayltic process for the hydrogenation of aromatic polymers is disclosed. The catalyst used in the process is a metal or mixture of metals of sub-group VIII of the periodic table together with a support of silicon dioxide, aluminum oxide or a mixture thereof. The catalyst, having pores is characaterized in that the pores having diameters of 100 to 1,000 Å constitute less than 15 percent of the total volume of pores. The hydrogenation, that is carried out in the presence of at least one oxygen-containing hydrocarbon is characterized in that it is essentially complete and without significant degradation of molecular weights.

Abstract: The invention relates to a novel process for preparing functionalized PPE, the process comprising oxidative coupling in a reaction solution at least one monovalent phenol species using an oxygen containing gas and a complex metal catalyst to produce a PPE; and functionalizing the PPE prior to and/or during at least one isolation step for devolatilization of the reaction solvent. The invention also relates to the polyphenylene ether resin made by the process as well as blends and articles containing the polyphenylene ether resin made by the process.

Abstract: High flow polyphenylene ether formulations are obtained with the addition of dendritic polymers. High flow is also obtained with the addition of dendritic polymers to flame retardant polyphenylene ether formulations.

Abstract: The invention relates to a polyphenylene ether resin containing residual aliphatic unsaturation as well as composites, blends, and articles made from the polyphenylene ether resin containing residual aliphatic unsaturation. Also included are reaction products between the polyphenylene ether resin containing residual aliphatic unsaturation and other resins and unsaturated resin formulations, e.g., thermosetting polyesters, acrylics, bismaleiimides, silicones, and allylics, and thermoplastics such as polyolefins, styrenics, rubbers, etc.

Abstract: The above described deficiencies and drawbacks are overcome by the process for making poly(arylene ether)-polyamide compositions which comprise about 10 weight percent (wt %) to about 90 wt % poly(arylene ether), about 90 wt % to about 10 wt % polyamide, about 0.01 wt % to about 10 wt % compatibility modifier, and optionally other additives known in the art. The process comprises several components which can be employed singly or in combination, namely: utilizing resins and additives that are substantially free of gaseous oxygen (air-free; e.g. less than about 1.0 vol % oxygen preferred, and less than about 0.5 vol % oxygen especially preferred, and less than about 0.05 vol % especially preferred); melting and compounding under an atmosphere which is substantially air-free; adding up to 20 wt % of polyamide to the poly(arylene ether) before compounding; when employing an extruder with an atmospheric vent, operating with the atmospheric vent open; and performing the injection molding under an inert atmosphere.

Abstract: The invention relates to a novel process for the manufacture of polyphenylene ether resin containing residual aliphatic unsaturation. The invention also relates to the polyphenylene ether resin containing residual aliphatic unsaturation as well as composites, blends, and articles made from the polyphenylene ether resin containing residual aliphatic unsaturation. Also included are reaction products between the polyphenylene ether resin containing residual aliphatic unsaturation and other resins and unsaturated resin formulations, e.g., thermosetting polyesters, acrylics, and thermoplastics such as polyolefins.

Abstract: A composition of matter, comprising: a chemically functionalized carboxylate-alumoxane that is functionalized with a chemically reactive substituent, and a reactive compound, wherein the chemically reactive substituent reacts with the reactive compound so as to link the carboxylate-alumoxane to the reactive compound and form a polymer matrix. The functional groups on the carboxylate-alumoxane can vary depending on the desired properties of the matrix. Also, the composition of matter may comprise a cross-linked matrix in which the cross-linked components consist of functionalized alumoxanes.

Abstract: The above described deficiencies and drawbacks are overcome by the process for making poly(arylene ether)-polyamide compositions which comprise about 10 weight percent (wt %) to about 90 wt % poly(arylene ether), about 90 wt % to about 10 wt % polyamide, about 0.01 wt % to about 10 wt % compatibility modifier, and optionally other additives known in the art. The process comprises several components which can be employed singly or in combination, namely: utilizing resins and additives that are substantially free of gaseous oxygen (air-free; e.g. less than about 1.0 vol % oxygen preferred, and less than about 0.5 vol % oxygen especially preferred, and less than about 0.05 vol % especially preferred); melting and compounding under an atmosphere which is substantially air-free; adding up to 20 wt % of polyamide to the poly(arylene ether) before compounding; when employing an extruder with an atmospheric vent, operating with the atmospheric vent open; and performing the injection molding under an inert atmosphere.

Abstract: Impact modified, compatibilized poly(phenylene ether)-polyamide compositions containing either a polybutene or an organosiloxane mixture give molded parts with good surface appearance, improved flow at high shear rate, and improved low temperature impact strength in comparison to control blends without added organosiloxane mixture or polybutene.

Abstract: A thermoplastic composition comprising a poly(arylene ether), a polyamide, a compatibilizing agent, and a polyester ionomer exhibits reduced moisture absorption and improved paint adhesion. Use of the polyester ionomer allows use of lower amounts of conductive fillers.

Abstract: There is provided a polyphenylene ether resin composition comprising: (i) a polyphenylene ether resin; (ii) a phosphoric ester; and (iii) a dispersed substance having an aspect ratio of not less than about 2, and which composition has superior heat resistance and flame resistance without use of any halogen-containing flame retardant or any halogen-containing anti-dripping agent as an essential or mandatory component.

Abstract: The invention relates to wire enamels comprising as binders polyesterimide and/or polyamideimide, the binders comprising as monomeric building blocks polyoxyalkylenediamine having terminal amino groups. The polyoxyalkylenediamines are preferably selected from the group polyoxyethylenediamine, polyoxypropylenediamine and polyoxyethylenepropylenediamine. The invention also encompasses the use of the novel wire enamels for coating copper wires, especially thick round wires or profiled wires.

Abstract: Compatible polyphenylene ether-polyamide blends are prepared without the need for compatibilizing compounds such as citric acid or maleic anhydride. The preparation method includes melt blending of the constituents, with other materials such as impact modifiers and fillers optionally being present, at an apparatus temperature maintained no lower than about 295° C. and a pressure maintained below about 200 torr. Blending is preferably by extrusion, with filler and optionally a portion of the polyamide being introduced downstream.

Abstract: Carboxy-functionalized polyphenylene ethers containing structural units with a carboxyalkyl group in the 2-position are prepared by redistribution of a polyphenylene ether with a 2-carboxyalkylphenol such as 2-(3-carboxypropyl)phenol (melilotic acid), or by oxidative coupling of a suitable phenol with such a 2-carboxyalkylphenol. The products form compatibilizing copolymers with polymers containing carboxylic acid-reactive functional groups, such as polyesters, polyamides and epoxy resins.

Abstract: The invention relates to methods of capping poly(phenylene ether) resin having an intrinsic viscosity between 0.05 and 0.35 dl/g. More particularly, the methods comprise capping a poly(phenylene ether) resin having an intrinsic viscosity between 0.05 and 0.35 dl/g in a solvent to produce a capped poly(phenylene ether) resin having an intrinsic viscosity between 0.05 and 0.35 dl/g and isolating the capped poly(phenylene ether) resin by removal of the solvent, preferably in a process other than precipitation. The invention also relates to the capped poly(phenylene ether) resin having an intrinsic viscosity between 0.05 and 0.35 dl/g.

Abstract: A composition is provided which comprises a functionalized poly(phenylene ether) resin, poly(arylene sulfide) resin, epoxy functional alpha-olefin elastomer, elastomeric block copolymer, and a metal salt. The composition is preferably prepared by premixing a poly(phenylene ether) resin with an organic acid and a vinyl aromatic-diene block copolymer to form a premix, and then compounding the premix with an epoxy functional alpha-olefin elastomer, a poly(arylene sulfide) resin and a metal salt of an organic acid. The composition has enhanced levels of mechanical properties such as impact strength, and is suitable for making molded articles such as vertical automotive body panels.

Abstract: A molding composition comprises (A) an aggregate, at least one of (B) an unsaturated polyester and (C) an unsaturated polyester-polyamide, and (D) a radical generator comprising a peroxide represented by formula: R1OOC(CH3)2—R3—C(CH3)2OOR2 wherein R1 and R2, which may be the same or different, each represent an alkyl group having 3 to 10 carbon atoms or an arylalkyl group having 7 to 17 carbon atoms; and R3 represents an arylene group.

Abstract: The invention relates to a method of making a conductive thermoplastic composition containing at least one dispersed phase polymer with a continuous phase polymer and at least one conductivity imparting agent wherein the bulk resistivity of the composition is at least partially determined by the particle size of the dispersed phase within the continuous phase. The thermoplastic composition preferably comprises a compatibilized blend of at least one polyphenylene ether resin, at least one polyamide resin, and at least one conductivity imparting agent, and optionally, one or more of impact modifiers, stabilizers, antioxidants, lubricants, and fillers.

Abstract: The present invention relates to a cinnamatic photo-polymerization type homopolymeric or copolymeric alignment material, in which polymaleimide is singly used as the main chain, or is combined with styrene, hydroxystyrene or acrylonitrile to form a copolymer so as to be used as the main chain, or polyimide is used as the main chain.

Abstract: The present invention is directed to a unique poly(arylene ether)/polyetherimide composition having improved impact strength, as well as other improved mechanical and physical properties. This composition comprises: about 40 to about 90 pbw of a polyetherimide resin; about 8 to about 60 pbw of a functionalized poly(arylene ether) resin having a base titratable functionality level of at least 30 .mu.eq/g; and about 0.2 to about 35 pbw of a copolymer of an olefin and an epoxy-functionalized monomer; and may further include catalysts, gloss improvers, stabilizers, and other additives.

Abstract: An aqueous phenolic resin dispersion that includes an aqueous continuous phase and, dispersed within the aqueous phase, the reaction product of a phenolic resin precursor and a modifying agent wherein the modifying agent includes at least one ionic group and at least one functional moiety that enables the modifying agent to undergo condensation with the phenolic resin precursor. The resulting dispersed phenolic resin reaction product includes at least one phenolic ring to which is bound the ionic group from the modifying agent. The pendant ionic group is a sulfate, sulfonate, sulfinate, sulfenate or oxysulfonate and the reaction-enabling moiety preferably is a hydroxy or hydroxyalkyl.

Abstract: Compatible polyphenylene ether-polyamide blends are prepared without the need for compatibilizing compounds such as citric acid or maleic anhydride. The preparation method includes melt blending of the constituents, with other materials such as impact modifiers and fillers optionally being present, at an apparatus temperature maintained no lower than about 295.degree. C. and a pressure maintained below about 200 torr. Blending is preferably by extrusion, with filler and optionally a portion of the polyamide being introduced downstream.

Abstract: The present invention provides a thermally resistant resin composition containing PS and PPO, wherein at least one of PS and PPO has an acid group and the acid group is neutralized with a basic metal compound containing a metal element of the group 2B, 3B, 4B or 5B of the periodic table; thermally resistant PS and PPO each with an acid group which is also neutralized in the same manner as described above; and a method for miscible preparation of PS and PPO, wherein at least one of PS and PPO has an acid group and the acid group is neutralized similarly.

Abstract: A polyester film, comprising a non-liquid crystal polyester (A) and a copolyester (B) containing mesogen groups in the main chain to form a phase separated structure in the non-liquid crystal polyester (A), and the dispersed domains of the copolyester (B), having forms to satisfy the following formulae (1) and (2):0.02<(I/J)<50 (1)K<1/2.times.S[I, J] (2)where I, J and K are form indicators expressing the average form of the plurality of domains existing in the film: I is the average length of the dispersed domains of the copolyester (B) in the machine direction of the film; J, that in the transverse direction; and K, that in the normal direction: and S is a function for selecting the shorter value of the lengths I and J; if I>J, S[I, J] means J, and if I<J, S[I, J] means I. If the copolyester (B) has such geometrical forms, the polyester film obtained is excellent in rigidity, high toughness, heat shrinkage, clarity, surface properties, long-time thermostability, electric properties, etc.

Abstract: A copolymer comprisinga) a segment A with a number-average molar mass Mn of from 1000 to 20,000 g/mol, which hasi) units 1, which have been derived from structures of the formula (I) ##STR1## where the radicals R.sup.1 and R.sup.2, independently of one another, are a hydrogen, fluorine, chlorine or bromine atom or a branched or unbranched alkyl or alkoxy radical having from 1 to 6 carbon atoms; and/orii) units 2, which are derived from structures of the formula (II) ##STR2## and b) a segment B, derived from a polyarylene sulfide structure of the formula (IV) ##STR3## where Ar is an aromatic radical, or more than one condensed aromatic radicals, and n is a number from 2 to 100, in particular from 5 to 20, together with a process for its preparation, and also its use for compatibilizing blends made from polyarylene sulfides and aromatic polyesters.

Abstract: The present invention provides a highly impact resistant polyamide composition which comprises a polyamide resin and an acid modification product of a metallocene catalyzed polyolefin elastomer. The invention also provides a less hygroscopic and highly impact resistant polyamide composition which comprises a polyamide resin, novolak phenol and an acid modification product of a metallocene catalyzed polyolefin elastomer. Used as the polyamide resin is less expensive nylon 6.

Abstract: Carboxy-functionalized polyphenylene ethers containing structural units with a carboxyalkyl group in the 2-position are prepared by redistribution of a polyphenylene ether with a 2-carboxyalkylphenol such as 2-(3-carboxypropyl)phenol (melilotic acid), or by oxidative coupling of a suitable phenol with such a 2-carboxyalkylphenol. The products form compatibilizing copolymers with polymers containing carboxylic acid-reactive functional groups, such as polyesters, polyamides and epoxy resins.

Abstract: Polyphenylene ether-thermosetting resin compositions are provided that are useful as dielectrics, particularly printed circuit boards having improved processability, good solvent and solder resistance, as well as improved morphology as compared to other polyphenylene ether-thermosetting resin compositions. More specifically, the particular polyphenylene ether resin component of this invention has a molecular weight of less than about 3,000 number average in contrast to higher molecular weight polyphenylene ethers employed in other polyphenylene ether-thermosetting resin compositions for use in preparing printed circuit boards.

Abstract: Oligomeric materials contain ultraviolet light absorbing compounds that are covalently bound to the oligomer backbone through an ester or amide linkage. These ultraviolet light absorbing oligomers may be combined with polymers such as polyolefins to provide protection against the harmful effects of ultraviolet light.

Abstract: There is disclosed an impact resistant polystyrene composition which comprises 5 to 98% by weight of an (a) styrenic polymer having a syndiotactic configuration and 2 to 95% by weight of a (b) styrene/diolefin diblock copolymer, styrene/diolefin/styrene triblock copolymer or styrene/diolefin random compolymer, each having a hydrogenation rate of 70 to 98 mol %, and optionally a (c) rubbery elastomer having an olefinic component or polyolefin, a (d) poly(phenylene ether), etc. The above composition is greatly enhanced in its impact resistance and elongation properties without deterioration of heat resistant stability of color tone, etc.

Abstract: The invention provides a composition for a platable resinous substrate having enhanced heat performance comprising: a thermoplastic mixture of at least one polyphenylene ether and at least one poly(alkenylaromatic) compound, at least one rubber compound, and at least one inorganic filler material.

Abstract: Compositions are provided for compatibilized blends comprising compatibilizing poly(phenylene ether) resins and epoxy-functional polyolefins that exhibit improved resistance to delamination while providing high impact strength and other improved physical properties. Articles made from the compositions are useful for automotive lighting and under hood components.

Abstract: A block copolymer containing one or more polyoxyethylene blocks and one or more polyoxy(higher alkylene) blocks, wherein at least some of the blocks are linked together by an oxymethylene group, can be prepared by reacting one or more dihydroxy terminated polymers selected from poly(ethylene glycol), poly(higher alkylene glycol), and block copolymers thereof in solution with a dihalomethane in the presence of a base. Such copolymers can be used as surfactants and surface modifiers. The reaction can be conducted at ambient temperature, and does not require the addition of heat.

Abstract: The present invention concerns polymer blends and processes for the preparation thereof. The present blends contain a) 5 to 95 parts by weight of poly(2,6-dimethyl-1,4-phenylene)ether, b) 95 to 5 parts by weight of a second polymer which is immiscible therewith, and c) a component (a compatibilizer) which enhances the compatibility of the polymers. According to the invention the component enhancing the compatibility of the polymers comprises 0.1 to 10%, preferably about 1.5 to 10%, calculated on basis of the total weight of components a and b, of at least one compound C, which has the formulaA.sub.i --B.sub.j IwhereinA stands for a group which contains at least one ring with 3 to 7 members, capable of forming ring-to-ring interactions with the phenyl rings of poly(2,6-dimethyl-1,4-phenylene)ether,B is a polar group,i is an integer 1 to 20, andj is an integer 0 to 20,whereati+j is greater than or equal to 2,the melting point of compound C is above 50.degree. C. and the boiling point thereof above 200.degree.

Abstract: Polymer blend compositions comprise (a) a polyphenylene ether polymer, (b) a polyphthalamide comprising the reaction product of (i) hexamethylene diamine or a mixture of hexamethylene diamine and trimethylhexamethylene diamine, and (ii) terephthalic acid, and optionally (iii) at least one acid selected from the group consisting of isophthalic acid and adipic acid, provided that a mixture of said diamines is employed if reactant (iii) is absent, and (c) at least one compatibilizer. The compositions may further include an aliphatic polyamide and/or an impact modifier.

Abstract: Graft copolymers are obtainable by reactingA) polyarylene ethers,B) polyamides andC) copolymers which contain cyclic, .alpha.,.beta.-unsaturated dicarboxylic anhydridesand are used for the preparation of thermoplastic molding materials or as compatibilizers for polymer blends based on polyarylene ethers and polyamides.

Abstract: The present invention deals with the distribution of polyphenylene ethers 1. by reacting the polyphenylene ether in solution with a phenolic compound, wherein special phenolic compounds are used. The redistribution reaction can be performed in toluene or in toluene/alcohol blends. The reaction can be run in the presence or the absence of a catalyst.

Abstract: Disclosed is a process which comprises the steps of (a) providing a polymer containing at least some monomer repeat units with halomethyl group substituents which enable crosslinking or chain extension of the polymer upon exposure to a radiation source which is electron beam radiation, x-ray radiation, or deep ultraviolet radiation, said polymer being of the formula ##STR1## wherein x is an integer of 0 or 1, A is one of several groups as specified in the claims, B is one of several groups as specified in the claims, and n is an integer representing the number of repeating monomer units, and (b) causing the polymer to become crosslinked or chain extended through the photosensitivity-imparting groups. Also disclosed is a process for preparing a thermal ink jet printhead by the aforementioned curing process.

Abstract: A poly(phenylene ether) resin composed of structural units represented by the general formula: ##STR1## (wherein R.sup.1, R.sup.2 and R.sup.3 represent each alkyl, cycloalkyl, etc. or H (provided that two or more of R.sup.1, R.sup.2 and R.sup.3 do not represent H at the same time), or one of R.sup.1, R.sup.2 and R.sup.3 represents alkyl or H while the others together form a saturated ring, or R.sup.1, R.sup.2 and R.sup.3 together form an aromatic ring; A represents alkyl; p is an integer of from 3 to 5; and Y.sup.- represents a pharmaceutically acceptable acid residue) and/or structural units represented by the general formula: ##STR2## (wherein R.sup.4, R.sup.5 and R.sup.6 represents each alkyl, cycloalkyl, etc. or H (provided that two or more of R.sup.4, R.sup.5 and R.sup.6 do not represent H at the same time), or one of R.sup.4, R.sup.5 and R.sup.6 represents alkyl or H while the others together form a saturated ring, or R.sup.4, R.sup.5 and R.sup.6 together form an aromatic ring; and A, p and Y.sup.

Abstract: The present invention relates to a method for forming the LCP composite having LCP fibers dispersed in the matrix resin even if the LCP content may be smaller than the lower limit of the fiber formable range.The method is characterized in that a resin composite reinforced by the LCP fiber in a mixture ratio beyond the fiber formable range or the preferred fiber formable range by means of an extrusion or injection molding of a resin mixture containing a liquid crystal resin composite extruded in the fiber formable range or the preferred fiber formable range.

Abstract: Disclosed is a polyamide resin composition comprising a melt-kneaded product of (A) a polyamide; (B) a polyphenylene ether; (C) a styrene polymer; and (D) a compound having in a molecule thereof a carbon-to-carbon double bond and at least one functional group selected from a carboxylic acid group, an acid anhydride group, an epoxy group, an amino group and a hydroxyl group, wherein the polyamide (A) is present as a continuous phase in which the polyphenylene ether (B) and the styrene polymer (C) are dispersed individually, independently or in mixture thereof to form a dispersion phase having an average particle diameter of 5 .mu.m or less, and wherein the (B)/(C) weight ratio is from 20/80 to 70/30, and the styrene polymer (C) in the melt-kneaded product has a reduced viscosity of 0.70 dl/g or more.

Abstract: A process for the preparation of polymeric alloys from polyester resins and polymers containing groups capable of giving addition reaction with functional compounds containing at least two reactive groups comprising the melt state mixture stage of polyester resin, reactive polymer and functional compound of mixture pelletizing and following polyaddition reaction in the solid state at temperatures between 150.degree. and 220.degree. C. to obtain an increase of the polymer intrinsic viscosity of 0.1 dl/g in comparison with the starting polyester resin.

Abstract: Polyphenylene ether-thermosetting resin compositions are provided that are useful as dielectrics, particularly printed circuit boards having improved processability, good solvent and solder resistance, as well as improved morphology as compared to other polyphenylene ether-thermosetting resin compositions. More specifically, the particular polyphenylene ether resin component of this invention has a molecular weight of less than about 3,000 number average in contrast to higher molecular weight polyphenylene ethers employed in other polyphenylene ether-thermosetting resin compositions for use in preparing printed circuit boards.

Abstract: A composition having enhanced fracture resistance comprising a heat curable reaction product of a fluorine-containing thermoset material and a fluorine-containing homopolymer, wherein the cured reaction product comprises the thermoset material having a plurality of discrete phases of said fluorine-containing homopolymer dispersed therein, the homopolymer phases being in the range of micron to submicron size.

Abstract: Polymers (A) containing oxazine groups are prepared by reacting a polymer (T) containing nitrile groups with a monoaminoalcohol in the presence of a catalyst by a process in which the polymer T is reacted in the melt with the monoaminoalcohol in the presence of the catalyst and in the absence of a solvent.

Abstract: A water-soluble polymer prepared by melting and reacting a mixture of an oxycarboxylic acid having a melting point of 170.degree. C. or less and maleamic acid, or a mixture of a plurality of oxycarboxylic acids including at least one oxycarboxylic acid having a melting point of 170.degree. C. or less and maleamic acid, at a temperature of 170.degree. C. or less at the start of the reaction to obtain a polymer; and then hydrolyzing the polymer.

Abstract: Molding materials comprise polyarylene ethers, copolymers containing units which are derived from aromatic vinyl compounds and cyclic .alpha.,.beta.-unsaturated carboxylic anhydrides and carboximides, and furthermore fillers and rubber impact modifiers.

Abstract: For optical applications, transparent amorphous thermo-plastics, such as polyaryl ether ketones, are of considerable interest. However, polyaryl ether ketones have inadequate UV stability and weathering resistance while amorphous polyaryl esters do not have these negative properties. The properties can be improved by means of polymer alloys, giving weathering-resistant materials from homogeneously mixed polymers which comprise at least one amorphous polyaryl ether ketone and at least one amorphous polyaryl ester.