Abstract: A crosslinked polymer dispersion comprising a preformed polymer, selected from the group consisting of silicon modified organic polymers, mixtures of silicon modified organic polymers, mixtures of silicon modified organic polymer(s) with regular organic polymers, mixtures of silicon modified organic polymer(s) with siloxane polymers, mixtures of above polymers, and mixtures of above polymer(s) with organic plasticizers or solvents.

Abstract: Compositions are provided which comprise a poly(phenylene ether) resin, a poly(arylene sulfide) resin and an ortho ester compound. The compositions can further comprise compatibilizing agents and reinforcing fillers to provide compositions that exhibit low flash molding characteristics. Articles molded from these compositions are useful in the electrical connector industry.

Abstract: The present invention is directed to in situ reinforced thermoplastic fibers having improved mechanical properties and a method of making same. These composites have improved tensile strength and tensile moduli that exceed that predicted by composite theory under the rule of mixtures. The in situ composites can be used in woven preforms.

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: The present invention concerns polyphenylene sulfide resin compositions having excellent heat resistance, fire resistance, chemical resistance, impact resistance, mechanical strength, and moldability.

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: Binary and tertiary mixtures comprise (A) from 33 to 99% by weight of at least one polyarylene sulfone, (B) from 1 to 67% by weight of at least one polyarylene sulfoxide and/or (C) from 1 to 67% by weight of a polyarylene sulfide, where the sum of the components (A), (B) and (C) is always 100%.These mixtures can be processed to give homogeneous shaped parts, which are converted by the processing procedure into homogeneous polymer masses and only have the glass transition temperature of the polyarylene sulfone.

Abstract: Compositions for a tip seal for a scroll type compressor are proposed which are low in friction coefficient, high fluidity in a molten state and highly durable in a compressor using a substitute Freon. The composition comprises 2-10 wt % of fluororesin, 5-20 wt % of carbon fiber, and 75-93 wt % of polyphenylene sulfide resin containing 90 mol % or more of a repeating unit represented by the formula: ##STR1## The composition has a melt viscosity of 1200-3000 poise. Also, a method of manufacturing a plurality of such tip seals simultaneously is proposed.

Abstract: Rigid-rod and segmented rigid-rod polymers, methods for preparing the polymers and useful articles incorporating the polymers are provided. The polymers incorporate rigid-rod backbones with pendant solubilizing groups attached thereto for rendering the polymers soluble.

Abstract: A molding composition or mixture comprising a polyamide and at least one polymer containing sulfoxide groups serves for the production of a foam material by the action of heat. The foam material is used for moldings and heat-resistant insulation layers.

Abstract: Heat-curable resin systems containing at least one liquid monomer and one solid component, and which have superior tack and drape, may be prepared by slurry mixing a slurry compatible solid into at least one liquid monomer such that the finished resin system contains the solid as a discontinuous phase having a particle size of less than about 20 .mu.m.

Abstract: Compatibilized blends of poly(phenylene ether) resins and polyester resins are provided from nucleophile containing poly(phenylene ether) resins and polyester resins and compatibilizer compounds to afford articles having good impact, ductility and tensile properties. The compositions may further comprise impact modifiers, metal salts, reinforcing agents, flame retardants and flow promoters. Articles made from the compositions are useful for automotive components. Polymers chain extended with multifunctional orthoesters are claimed.

Abstract: Process for oxidizing a polymer containing thioether groups, in which the polymer in solid form in a suspension medium is oxidized with ozone. The polymer obtained is suitable for the production of functional parts on which high demands are made.

Abstract: Mixtures of fluoropolymers and oxidized polyarylene sulfidesA polymer mixture ofA) at least one fluoropolymer in a proportion of from 50 to 99% by weight andB) at least one polyarylene sulfone or polyarylene compound containing at least two of the bridges --S--, --SO-- and --SO.sub.2 -- or a mixture of the two in a proportion of from 1 to 50% by weight,where the sum of components A) and B) is always 100% by weight.This mixture is used for the production of sliding bearings or gasket materials having a reduced tendency to creep and reduced abrasion.

Abstract: Molded articles of an aromatic polymer are described having at least a portion of the surface layer of the polymer modified by a heterogeneous reaction of the solid polymer and a reactive solution. The polymer to be treated may contain different repeating units in the said surface layer. The treatment to produce the molded article may comprise casting, injection molding, extending or otherwise shaping the polymer to mold the polymer into a desired shape. The heterogeneous treatment to produce the heterogeneously modified molded article may comprise treating a surface layer of a flat cast sheet in the form of a flat membrane, spirally wound membrane, hollow fiber, or tubular material.

Abstract: In the process for the surface oxidation of polyarylene thioethers, the surface of the material to be oxidized is brought into contact with an ozone-containing gas or a liquid.The materials prepared by the process can be used in aircraft construction, automobile construction and chemical apparatus construction.

Abstract: In the process for the preparation of aromatic sulfur-containing polymers, the polymer is formed from a prepolymer having halogen end groups. The process can be carried out in two stages: 1. Preparation of the prepolymer and 2. conversion of the prepolymer into the polymer. The process is particularly suitable for the preparation of polyphenylene sulfide.

Abstract: The present invention relates to a resin composition comprising (A) polyphenylene ether, (B) polyarylene sulfide and (C) polyisocyanate, wherein the polyisocyanate is an organic compounds having the general formula: ##STR1## wherein n is an integer of 1 or more.

Abstract: The invention relates to a polymer mixture comprising A) a polyarylene sulphide, B) an elastomeric polymer having reactive groups which are capable of reacting with the polyarylene sulphide, the polymer mixture moreover comprising as constituent C) a metal salt of a fatty acid having a melting temperature lower than the compounding temperature of the polymer mixture. The presence of the metal salt C contributes to an improvement of the mechanical properties, in particular the ductility.

Abstract: There is provided a direct method for producing a reinforced composite resin material by polymerizing a specific copolyester having high heat resistance and a reinforcing effect in the presence of a molten preformed thermoplastic polymer. In the production of the reinforced composite resin material, a fibrillar copolyester is produced by the polymerization of specific hydroxy aromatic carboxylic acid monomers and is generated within a molten preformed thermoplastic polymer while undergoing a shearing stress. Such shearing stress causes the formation of the requisite fibrous reinforcement preferably having an aspect ratio of at least 3 within the preformed thermoplastic polymer. Such hydroxy aromatic carboxylic acid monomers preferably have acetylated hydroxyl groups when copolymerized. Additionally, substituents other than hydrogen atoms optionally may be present on the rings of the aromatic monomers at the time of the copolymerization to form the fibrillar copolyester.

Abstract: A uniaxially stretched multilayered film obtained by uniaxially stretching a laminated film at a stretch ratio of from 3 to 10 to form many closed fine voids in each layer, said laminated film comprising a base layer (A) made of a resin composition comprising resinous ingredients comprising from 50 to 90% by weight crystalline polyolefin (a) and from 50 to 10% by weight thermoplastic resin (b) having a lower melting point than the crystalline polyolefin (a) and an inorganic fine powder (c) in an amount of from 0 to 35% by weight based on the sum of the weight of the resinous ingredients and, formed on at least one side of said base layer (A), a surface layer (B) made of a resin composition comprising from 20 to 80% by weight inorganic fine powder (d) and from 80 to 20% by weight crystalline polyolefin (e), said uniaxially stretching being conducted at a temperature lower than the melting point of said crystalline polyolefin (a) and lower than the melting point of said crystalline polyolefin (e) but at a tempe

Abstract: Mixtures comprising polyarylene sulfides and polyarylene sulfoxides or partially oxidized polyarylene sulfides containing sulfoxide groups can be thermally crosslinked in a targeted manner depending on sulfoxide content. A process for producing crosslinked polyarylene sulfide moldings is based on the use of the mixtures in the thermal shaping.

Abstract: A polyarylene sulfide resin composition having improved toughness and impact resistance is formed by 100 wt. parts of polyarylene sulfide and 0.5-50 wt. parts of a graft copolymer. The graft copolymer includes an olefin copolymer segment comprising .alpha.-olefin units and .alpha.,.beta.-unsaturated acid glycidyl ester units, and a grafting polymer segment comprising .alpha.,.beta.-unsaturated acid glycidyl ester units and chemically bonded to the olefin copolymer segment. The .alpha.-olefin is preferably ethylene. The .alpha.,.beta.-unsaturated acid glycidyl ester is preferably glycidyl acrylate or glycidyl methacrylate. The grafting polymer segment is preferably in the form of a copolymer of an .alpha.,.beta.-unsaturated acid glycidyl ester and a monoethylenically unsaturated monomer.

Abstract: A plain bearing is disclosed comprising a bearing layer bonded to a sintered metallic layer, which in turn is mounted on a backing plate. The bearing layer comprises a material formed from two interpenetrating networks, one of polytetrafluoroethylene and the other of polyphenylenesulphide. The percentage by volume of polyphenylenesulphide is between about 45% and about 55%.

Abstract: A resin composition for sealing liquid crystal cells comprising as principal ingredients epoxy resin containing a polysulfide modified epoxy resin, hydrazide compounds and fillers.The said epoxy resin contains a polysulfide modified epoxy resin expressed in an amount of the general formula (1) by 20 to 100% by weight in the entire epoxy resin and the average molecular weight of the entire epoxy resin is between 300 and 3000 Formula (1) is defined as follows: ##STR1## where each of R.sup.1 and R.sub.3 represents at least one organic group selected from a group consisting of bisphenol structures, aliphatic oxyether structures and aliphatic thioether structures and R.sup.2 represents a polysulfide structure expressed by --(C.sub.2 H.sub.4 OCH.sub.2 OC.sub.2 H.sub.4 S.sub.m).sub.n --, wherein m represents the number of sulfur atoms contained in a polysulfide structure, which is 1 or 2, and n represents the average number of polysulfide structures contained in the above formula, which is between 1 and 50.

Abstract: The peel strength of lightweight, liquid polysulfide-based sealants for aircraft is improved by the addition of an epoxy-terminated liquid polysulfide to the liquid polysulfide. The lightweight sealants have a specific gravity of from about 1 to about 1.3 and the amount of epoxide terminated polysulfide is from about 0.4 to about 5% of the weight of the polysulfide present in the sealant. Fillers having a specific gravity of from about 0.1 to about 2.2 are used.

Abstract: The invention relates to polyarylene sulfides (PAS), preferably polyphenylene sulfide (PPS), reduced in viscosity by aftertreatment of the PAS formed in the production process with disulfides in the melt.

Abstract: A method for improving the processability of a crystalline polyphthalamide having high heat deflection temperature when filled with glass fibers by compounding with an amount of a polyarylene sulfide sufficient to reduce melt viscosity.

Abstract: Polymer blends comprise a crystalline polyphthalamide component having high heat deflection temperature when filled with glass fibers and a polyarylene sulfide component.

Abstract: A resin composition prepared by simultaneously melting and kneading (A) a polyphenylene ether resin, (B) a polyarylene sulfide resin and (C) a functional compound having a bond or a functional group selected from the group consisting of non-aromatic carbon-carbon multiple bond, oxirane group and derived-carboxyl group and subsequently mixing thereinto (D) a polar compound having, in on molecule, at least two polar groups selected from the group consisting of derived-carboxyl group, derived-hydroxyl group, derived-amino group, derived-mercapto group, derived-sulfonic acid group, oxazoline group, cyanamide group, isocyanate group and oxirane group, provided that at least one of the polar groups is different from at least one of the functional groups which the functional compound (C) has.

Abstract: Blends compriseA) from 55 to 99% by weight of a matrix of copolyarylene ether sulfones composed ofa.sub.1) from 91 to 97 mol % of structural units ##STR1## a.sub.2) from 3 to 9 mol % of structural units ##STR2## B) from 1 to 45% by weight of a disperse phase comprising copolyarylene ether sulfones, composed ofb.sub.1) from 91 to 97 mol % of structural units II andb.sub.2) from 3 to 9 mol % of structural units I,C) from 0 to 40% by weight of rubber impact modifiers,D) from 0 to 60% by weight of fibrous or particulate fillers or of mixtures thereof andE) from 0 to 40% by weight of processing assistants and/or additives.

Abstract: This invention provides a novel cross-linked polyaniline derivative soluble or capable of swelling in general organic solvents, which forms an elastic self-standing film or fibers. The polyaniline derivative substantially comprises a polyaniline having number average molecular weight in a range of from 2,000 to 500,000 represented by the following formula (I) as the main polymer chain, ##STR1## wherein m and n are 0 or an integer of at least 1, m/(m+n)=0-1, and m+n=10-5,000, and cross-linking units represented by the following formula (II) ##STR2## wherein X is a direct bond, a substituted or unsubstituted divalent C.sub.1 -C.sub.30 aliphatic hydrocarbon group, a substituted or unsubstituted divalent aromatic hydrocarbon group, a divalent polysiloxane group or a group derived therefrom, or a divalent group derived from a compound having 2 or more repeating structural units, y.sup.1 and y.sup.

Abstract: Improved compositions are provided which comprise a poly(phenylene ether) resin, a poly(arylene sulfide) resin, a polyester resin, and a compatibilizer compound. The compositions can further comprise functionalizing agents, impact modifiers, flame retardants, and reinforcing fillers to provide compositions that exhibit improved tensile strength and elongation characteristics. Articles molded from these compositions are useful in the electrical connector industry.

Abstract: Polymer compositions comprising phenol/formaldehyde systems and polyarylsulphones having epoxy pendent or end groups are disclosed together with novel epoxy-ended polyarylsulphones and novel cross-linked epoxy-ended polyarylsulphones. The compositions can be both unreinforced and reinforced with fibres and/or other fillers.

Abstract: Disclosed herein is a process for the production of an alkylene thioether-arylene thioether copolymer, which comprises copolymerizably reacting a compound having at least one alkali thiolate group and obtained by causing an alkali metal sulfide to act on a poly(arylene thioether) in a water-containing polar organic solvent so as to depolymerize the poly(arylene thioether) with a dihalogen-substituted aliphatic compound in a water-containing polar organic solvent.

Abstract: The invention relates to a soft thermoplastic elastomeric composition having improved resistance to oil swell and compression set comprising a blend of an engineering thermoplastic resin, a cured rubber concentrate and optionally a compatibilizer and a method for its preparation. The invention further relates to the cured rubber concentrate, a method for its preparation and the use thereof.

Abstract: A method for property modification of bulk polymers, by initially treating a short chain monomeric organic acid, having a carboxylic group (with dissociation constant between 10.sup.-2 to 10.sup.-6 cm.sup.-1, and less than 8 carbons); with a Group IA, IIA or IIB metal, metal oxide, peroxide, hydroxide, or halogens, for forming a metal ligand or complex metal salt of the acid. The bulk polymers are mixed with the complex metal salts and free radicals are introduced into the mixture by means of oxidizing materials, to functionalize the bulk polymer with ionic polymerization sites. A copolymer formation is effected between the monomeric organic metal salt anion and the bulk polymer, as catalyzed by the metal cation, at such sites. The polymerization is a substantially non-cross linked ionic one resulting from the dissociation parameters and the short chain length of the complex metal salt, which is maintained prior to copolymer formation.

Abstract: The disclosure describes a flame-resisting resin composition comprising:(A) 90 to 99.5% by weight of a polyarylene sulfide; and(B) 0.5 to 10% by weight of a graft copolymer composed of an olefinic copolymer (a) having 30 to 59% by weight (based on the weight of said graft copolymer) of an .alpha.-olefin repeating unit and a glycidyl ester residue repeating unit of an .alpha.,.beta.-unsaturated mono-carboxylic acid, and at least one of polymers (b) having the repeating unit represented by the following formula (I):said olefinic copolymer (a) being branched or crosslinked with at least one of the polymers (b), ##STR1## wherein R represents a hydrogen atom or a lower alkyl group having from 1 to about 6 carbon atoms, X represents a benzyl group, --COOCH.sub.3, --COOC.sub.2 H.sub.5, --COOC.sub.4 H.sub.9, --COOCH.sub.2 CH(C.sub.2 H.sub.5)C.sub.4 H.sub.9, --CN, a phenyl group or a maleimide group.

Abstract: A process for the production of a poly(arylene thioether) containing phthalic anhydride groups wherein a dihalogen-substituted aromatic compound is reacted with an alkali metal sulfide in a polar organic solvent containing water to produce the poly(arylene thioether) is disclosed. This process comprises causing a monohalogen-substituted phthalic compound to exist in a polymerization reaction system, and controlling a ratio, a/b of the number of moles, a of the charged dihalogen-substituted aromatic compound to the number of moles, b of the charged alkali metal sulfide within a range of 0.8<a/b<1.

Abstract: Blends of thermotropic liquid crystalline polymers and isotropic melt-processable polymers are made by extruding a molten stream of either a thermotropic liquid crystalline polymer or an isotropic polymer through a heated mixing zone and feeding the other of the two polymers into the stream of the first polymer in the mixing zone. The polymers are mixed under shearing conditions for a time sufficient to yield a uniform blend. Blends made according to this method exhibit improved properties in comparison with blends obtained by feeding the two polymers simultaneously into a heated mixing zone.

Abstract: A thermoplastic resin composition comprising (a) a polyphenylene sulfide resin, (b) a polyphenylene ether resin, (c) a specific organophosphorus compound, and (d) a basic compound is disclosed. The composition exhibits improved compatibility between resinous components (a) and (b) and therefore provides a molded article having high mechanical strength and excellent appearance.

Abstract: In one aspect, the present invention relates to polyimides having excellent thermal resistance and process for preparing the same comprising carrying out condensation of 4,4'-bis(3-aminophenoxy)biphenyl with pyromellitic dianhydride in the presence of a different diamine compound and optionally with a different tetracarboxylic acid dianhydride.In a second aspect, the present invention relates to a heat resistant resin composition consisting essentially of an aromatic polyetherimide and a defined polyimide.In a third aspect, the present invention relates to a polyimide resin composition comprised on a defined polyimide and a separate high-temperature engineering polymer.In a fourth aspect, the present invention relates to a resin composition comprised of a defined polyimide and an aromatic polyamideimide.

Abstract: Thermoplastic resin compositions comprising in admixture a poly(phenylene ether) resin and a poly(arylene sulfide) resin are provided. The poly(phenylene ether) resin comprises an ortho ester moiety which enhances the compatibility and mechanical properties of the composition. The compositions may optionally comprise impact modifiers and other additives. The compositions are useful for making molded articles.

Abstract: Molding materials comprise polyarylene ethers having terminal hydroxyl groups, polyarylene ethers having terminal groups which are not hydroxyl groups, polyarylene sulfides and furthermore fibrous or particulate fillers, rubber impact modifiers and additives or processing assistants.

Abstract: This invention relates to a block copolymer comprising: a) at least one first block of polymerized units of at least one first ethylenically unsaturated monomer and at least one latent thiol mercaptan chain transfer agent wherein the latent thiol mercaptan chain transfer agent has the general formula; ##STR1## wherein A is a polyvalent organic radical; x and y are positive integers such that x+y equals the valence of A; B is an organic acyl radical; and n and m are integers from 1 to 6; and b) at least one second block of polymerized units of at least one second ethylenically unsaturated monomer, wherein said at least one second block is attached to said at least one first block by reacting with terminal thiol functional groups contained on said at least one first block. In addition, this invention relates to the method of making this block copolymer.

Abstract: This invention relates to a polymer composition of a block copolymer dispersed in water wherein the block copolymer is composed of: a) at least one first block of polymerized units of at least one first ethylenically unsaturated monomer and at least one latent thiol mercaptan chain transfer agent wherein the latent thiol mercaptan chain transfer agent has the general formula; ##STR1## wherein A is a polyvalent organic radical; x and y are positive integers such that x+y equals the valence of A; B is an organic acyl radical; and n and m are integers from 1 to 6; and b) at least one second block of polymerized units of at feast one second ethylenically unsaturated monomer, wherein said at least one second block is attached to said at least one first block by reacting with terminal thiol functional groups contained on said at least one first block.

Abstract: Disclosed is a polyphenylene sulfide resin composition having a superior heat resistance and impact resistance obtained by melt-kneading a modified polyphenylene sulfide resin obtained by reacting a polyphenylene sulfide resin with a carboxylic acid anhydride, with at least one thermoplastic resin selected from a polyamide resin, a polyester resin, a polycarbonate resin, a polysulfone resin, and a polyamide-imide resin.

Abstract: Disclosed herein are an aromatic thioether ketone/thioether sulfone random copolymer comprising phenylene thioether ketone recurring units (I) and phenylene thioether sulfone recurring units (II), (a) the compositional ratio (I:II) of the recurring units (I) to the recurring units (II) ranging from 98:2 to 65:35, (b) the solution viscosity (.eta..sub.inh) being at least 0.3 dl/g, (c) the melt crystallization time (.tau.) being at least 3 minutes, (d) the melting point (Tm) being 300.degree.-350.degree. C., (e) the glass transition temperature being at least 125.degree. C., (f) the retention (400.degree. C./20 min) of melt crystallization enthalpy (.DELTA.Hmc) being at least 60%, and (g) the average particle size being at least 0.1 mm, and the production process thereof.

Abstract: Relatively brittle epoxy resin systems which may be employed as structural film adhesives and matrix resins for fiber-reinforced prepregs are toughened against impact-induced damage by the addition of minor quantities of functionalized elastomer particles having a glass transition temperature of less than 10.degree. C.

Abstract: Molding materials are based on polyarylene ethers A having terminal anhydride groups and repeating units I ##STR1## in which t and q may each be an integer 0, 1, 2 or 3, T, Q and Z may each be a chemical bond or a group selected from --O--, --S--, --SO.sub.2 --, S.dbd.O, C.dbd.O, --N.dbd.N--, --R.sup.a C.dbd.CR.sup.b -- and --CR.sup.c R.sup.d --, with the proviso that at least one of the groups T, Q or Z is --SO.sub.2 -- or C.dbd.O, R.sup.a and R.sup.b are each hydrogen or C.sub.1 -C.sub.10 -alkyl, R.sup.c and R.sup.d are each hydrogen or a C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy or C.sub.6 -C.sub.18 -aryl group, where the abovementioned groups may each be substituted by fluorine and/or chlorine and Ar and Ar.sup.1 are each C.sub.6 -C.sub.18 -aryl which may have substituents selected from the group consisting of C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.18 -aryl, C.sub.1 -C.sub.10 -alkoxy and halogen, or random copolymers or block copolymers thereof.