Abstract: High temperature resistant polysulfone-polyimide block copolycondensates suitable for example for producing shaped articles are composed of at least one polyarylene ether sulfone block comprising units of the structure ##STR1## and at least one polyimide block comprising units of the structure ##STR2## where R.sup.1 and R.sup.2 are identical or different and each is hydrogen or methyl and X is methylene or 1,2-ethylene, and are prepared by condensing conventionally obtained amine-terminated polyarylene ether sulfone blocks with polyimide blocks in the melt.

Abstract: Novel poly(aryl ether sulfone)-poly(aryl ether ketone) block copolymers are described. They are prepared by the nucleophilic polycondensation of a hydroxy- or halo-terminated poly(aryl ether ketone) oligomer with the poly(aryl ether sulfone) forming reagents; alternatively, a preformed poly(aryl ether sulfone) block may be used.The novel copolymers are tough materials with excellent heat, solvent, and stress-crack resistanced. They display high HDT's (heat distortion temperatures) and are useful in molding, extrusion and composites applications.

Abstract: A wire coating resin composition comprising 25 to 95% by weight of a polyetherketone and 75 to 5% by weight of an aromatic polysulfone, which is characterized by the intrinsic viscosity (y) of the polyetherketone complying with the condition0.83.ltoreq.y.ltoreq.0.01x+0.65,wherein x represents weight percentage of the polyetherketone in the wire coating resin composition.

Abstract: Described are novel thermosetting epoxy resin compositions suitable for making cured resins, prepregs and stiff, tough thermoset composites. The thermosetting compositions comprise a polyepoxide component, an amine hardner and a specified amount of certain aromatic oligomers containing functional groups which are reactive with the polyepoxide and/or hardener under curing conditions for the composition. The cured resins have a multiphase morphology which comprises at least one glassy continuous phase and at least one glassy discontinuous phase and have a fracture toughness, K.sub.IC, of at least 1.0 MPam.sup.1/2.

Abstract: Thermoplastic molding materials contain, as essential components,(A) from 2 to 97.9% by weight of a nylon,(B) from 2 to 97.9% by weight of a polyaryl ether sulfone(C) from 0.1 to 30% by weight of a polymeric component having hydroxyl groupsand in addition(D) from 0 to 50% by weight of a rubber impact modifier and(E) from 0 to 60% by weight of reinforcing fillers.

Abstract: Polyimide polymers which are reaction products of active methylene compounds and N,N'-bismaleimide derivatives are improved by incorporating them with 2 to 15% by weight of a polyethersulfone polymer. The polymer blend is useful in producing films, moldings, prepegs, laminates and filled composites which are particularly useful in structural components which have stability at high temperatures.

Abstract: Described herein is a shaped article formed from a blend of a poly(aryl ether) resin and an aromatic polycarbonate resin and/or a polyacrylate resin. An article molded from such a blend has improved hydrolytic stability as compared with an article molded from the constituent components of the blend.

Abstract: A block copolymer composed of polyphenylene sulfide segments and aromatic sulfide sulfone polymer segments and having a logarithmic viscosity [.eta.], determined at 206.degree. C. for its solution in alpha-chloronaphthalene in a polymer concentration of 0.4 g/100 ml of solution and calculated in accordance with the equation [.eta.]=ln (relative viscosity)/polymer concentration, of 0.03 to 1.0. A resin composition comprising the block copolymer and polyphenylene sulfide and/or an aromatic sulfide sulfone polymer and optionally a filler. The block copolymer and the resin composition have improved mechanical strength and are suitable, for example, for encapsulation of electronic component parts.

Abstract: A graft copolymer consisting essentially of a main chain polymer having a glass transition temperature (Tg) of at least 30.degree. C. and a graft chain fluorine-containing polymer having a repreating unit of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a lower alkyl group, and R.sup.2 is a polyfluoroalkyl group.

Abstract: A thermosettable epoxy resin composition comprising 100 parts by weight of an epoxy resin, 5 to 40 parts by weight of polysulfone resin having both a resorcinol moiety and 4,4'-dichlorodiphenylsulfone moiety in the molecular chain, and an effective amount of a curing agent, which gives a cured product excellent in toughness as well as in curability, adhesion, mechanical strength at high temperatures and resistance to chemicals.

Abstract: Described herein is a composition which contains a specific group of hardeners, an epoxy resin and a thermoplastic polymer. When combined with a structural fiber the composition produces composites which have improved impact resistance, improved tensile properties and high compressive properties.

Abstract: Described are novel thermosetting epoxy resin compositions suitable for making cured resins, prepregs and stiff, tough thermoset composites. The thermosetting compositions comprise a polyepoxide component, an amine hardener and a specified amount of certain aromatic oligomers containing functional groups which are reactive with the polyepoxide and/or hardener under curing conditions for the composition. The cured resins have a multiphase morphology which comprises at least one glassy continuous phase and at least one glassy discontinuous phase and have a fracture toughness, K.sub.IC, of at least 1.0 MPam.sup.1/2.

Abstract: Disclosed is a stiff, tough thermoset composite, the composite comprising a crosslinked epoxy resin matrix and high strength filaments. The resin matrix comprises a glassy discontinuous phase dispersed in a glassy continuous phase that continues throughout the resin matrix. Volume fractions of the discontinuous phase are at least about 35% of the total volume of the continuous and discontinuous phases combined in exceptionally tough composites.Also disclosed are novel resin compositions suitable for making these thermosets.

Abstract: A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic condensation polymers containing hetero groups.

Abstract: A method of inhibiting microbial growth by employing an addition copolymer is disclosed. The addition copolymer consists essentially of an olefin and sulfur dioxide; said olefin containing at least one substituent selected from the group consisting of hydrogen, chloride, and fluoride radicals. These compositions inhibit bacterial growth while functioning as plastic materials and can be used in coatings, packaging, paints, structural members and supports.

Abstract: A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic condensation polymers containing hetero groups.

Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form shaped articles having satisfactory mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 75 percent by weight, based upon the total weight of the blend, of a sulfone polymer which is selected from the group consisting of polyether sulfone having recurring units of the formula ##STR1## polysulfone having recurring units of the formula ##STR2## a mixture of the above sulfone polymers, and approximately 25 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend.

Abstract: A new magnetic medium permits magnetic recording either in the longitudinal or the vertical direction. The medium, unlike prior art structures, does not require a nonmagnetic substrate. The medium is a rigid magnetic disk homogeneously prepared from ferric oxide particles and polyethersulfone in ratios and proportions that produce effective and inexpensive magnetic recording media.

Abstract: Polysulfone cast films, including polyethersulfone cast films, are partially gelled with mineral acid prior to or during the conventional water gelation to control the porosity of and improve the productivity of reverse osmosis and ultrafiltration membranes thus produced. The partial gelation may be carried out prior to the water gelation by contacting the cast film with the mineral acid in a gaseous or aqueous form and the gaseous form may be diluted with air. The partial gelation may, in different embodiments, be carried out simultaneously with the conventional gelation by dissolving the mineral acid in the gelation liquid.

Abstract: Described herein are molding compositions comprising a blend of a poly(aryl ether), a polyester and a compatibilizing amount of an aromatic polycarbonate. These compositions are especially suited for molding articles useful in electrical applications.

Abstract: The acid chloride of bis-m-carboxyphenyl acetylene was copolymerized with a mixture of isophthaloyl chloride, diphenyl ether and 4,4'-diphenoxydiphenyl sulfone to produce novel polyaromatic ether-ketone-sulfones easily cured by a Diels-Alder cycloaddition reaction.

Abstract: Mixtures of polyaryl sulphones and polycarbonates solutions made stable by the introduction of solubilizing agents are used to prepare cast films of improved properties.

Abstract: The present invention relates to a heat resistant molding resin composition comprising 60-99.9% by weight of an aromatic polyamideimide resin, and 40-0.1% by weight of a thermoplastic resin which comprises at least one member selected from the group consisting of a polyphenylene sulfide resin, a polyamide resin, a polysulfone resin, an aromatic polyester resin, a polyphenylene-ether resin and a phenoxy resin. The thermoplastic resin must have a melt viscosity at 350.degree. C. of not more than 1.times.10.sup.5 poise and a decomposition temperature of not lower than 350.degree. C. The aromatic polyamideimide resin is improved in melt viscosity characteristics by being blended with the thermoplastic resin. Therefore, a resin composition is obtained which is excellent in moldability characteristics. This composition may optionally comprise various kinds of fillers.

Abstract: An aqueous dispersion of an aromatic polyethersulphone of sole repeat unit ##STR1## and having mean particle size below 25 .mu.m, preferably below 12 .mu.m, is prepared by (1) stirring the polyethersulphone in methylene chloride to form a solution and then a coarse particulate solid, (2) adding further methylene chloride to form a slurry, (3) milling the slurry to form a dispersion, (4) mixing a methylene chloride - and water-miscible liquid which does not swell the polyethersulphone with the milled dispersion, (5) filtering the dispersion and washing the wet cake with the liquid and then water, and (6) dispersing the wet cake in water, optionally with milling, to provide the aqueous dispersion.

Abstract: Described herein are molding compositions of blends of a poly(aryl ether) resin and a polyetherimide resin. These compositions have improved environmental stress crack resistance.

Abstract: Aqueous impregnating emulsions for the impregnation of fibrous rovings are provided in which water has emulsified therein particles of epoxy resin in compatible admixture with thermoplastic resin, and a curing agent for the epoxy resin is dispersed in the emulsion, the curing agent being nonreactive under ambient conditions, such as dicyandiamide. Polysulfone resins are preferably used by dissolving them in methylene chloride and then evaporating this solvent after the epoxy resin has been dissolved in. Polycarboxylic acid emulsifying agents provide superior properties in the cured product.