Abstract: Poly(ether ketone ketones), which are important engineering resins, are thermally stabilized by being contacted for at least 15 minutes above their glass transition temperature with an organic hydroperoxide containing at least 0.1 mg of active oxygen per gram, having a boiling point above about 130.degree. C., and degradable between 130.degree. C. and the contacting temperature, the hydroperoxide being made from a precursor comprising at least one benzylic or allylic hydrogen in its molecule.

Abstract: Disclosed herein are stretched poly(arylene thioether) block copolymer films and a production processes thereof, said block copolymer film comprising a thermoplastic material composed of (A) 100 parts by weight of a particular poly(arylene thioether) block copolymer, (B) up to 100 parts by weight of at least one other thermoplastic resin, and (C) up to 15 parts by weight of at least one filler.

Abstract: Novel polyarylate polymers comprise alternating moieties derived from an aromatic dicarboxylic acid halide, with moieties derived from a hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactam compound and, optionally, with moieties derived from a di(hydroxyphenyl) compound. The polyarylate polymers are thermoplastic polymers characterized by relatively high glass transition temperatures.

Abstract: A process for preparation of a copoly(arylene sulfide) which has a decreased amount of disulfide radicals and corresponds to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.45 to 0 and n is at least 50,comprising contacting a copoly(arylene sulfide) corresponding to the structure ##STR2## wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.50 to 0.001 and n is at least 25,in the melt phase with a diiodoaromatic compound corresponding to the structureI-A-IwhereinA is a divalent substituted or unsubstituted aromatic radical.

Abstract: Blends comprising from about 1 to about 99 percent by weight of a poly(aryl ether ketone co-carbonate) and from about 99 to about 1 percent by weight of a thermoplastic polymer selected from the group of a poly(aryl ether ketone), a poly(arylene sulfide), a poly(ether imide) or a poly(aryl ether).

Abstract: Disclosed herein are melt-stable thermoplastic resin compositions comprising (A) 100 parts by weight of a particular poly(arylene thioether) block copolymer, (B) --400 parts by weight of at least one of thermoplastic resins, and (C) 0-400 parts by weight of at least one filler per 100 parts by weight of the resin components. At least either one of Component (B) and Component (C) is contained in a proportion of at least 0.1 part by weight per 100 parts by weight of Component (A). The poly(arylene thioether) block copolymer alternately comprise at least one poly(arylene thioether-ketone) block having predominant recurring units of the formula ##STR1## wherein the --CO-- and --S-- are in the para position to each other and at least one poly(arylene thioether) block having predominant recurring units of the formula ##STR2## Also disclosed are compositions obtained by stabilizing by the melt-stable thermoplastic resin compositions with a basic compound and products molded or formed product from these compositions.

Abstract: Disclosed are thermosetting, powder coating compositions comprised of semi-crystalline polyesters and .epsilon.-caprolactam-blocked bis(1-cyanato-1-methylethyl) benzene compounds which are readily curable at relatively-mild temperatures and using cure times commonly used to cure (cross-link) powder coatings. When using equivalent curing conditions, the disclosed coating compositions exhibit a higher degree of cross-linking than do combinations of amorphous polyesters and the .epsilon.-caprolactam-blocked bis(1-cyanato-1-methylethyl)-benzene compounds.

Abstract: Epoxy resins can be cured or crosslinked with triphenyl phosphine oxide compounds having epoxy-reactive (active hydrogen) substituents either alone or in combination with amine-terminated polyarylene ethers (e.g., amine-terminated polysulfone oligomers or high polymers.

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: Disclosed herein are poly(arylene thioether) block copolymer fibers formed by melt-spinning a thermoplastic material composed of (A) 100 parts by weight of a particular poly(arylene thioether) block copolymer, (B) up to 50 parts by weight of at least one other thermoplastic resin and (C) up to 10 parts by weight of at least one filler.

Abstract: The resin composition which contains thermosetting resin as Component (A), a thermoplastic resin as Component (B), and at least one compound selected from the group consisting of an epoxy resin capable of dissolving the thermoplastic resin and a reactive diluent possessing at least one epoxy group as Component (C) in a ratio such that the proportions of Components (A), (B), and (C) fall respectively in the ranges of 30 to 96% by weight, 2 to 50% by weight, and 2 to 49% by weight, based on the total weight of the resin composition. The resin composition is capable of producing a molded article combining the highly satisfactory mechanical and thermal properties of a thermosetting resin and the highly satisfactory toughness of a thermoplastic resin.

Abstract: Disclosed herein are poly(arylene thioether) block copolymer fibers formed by melt-spinning a thermoplastic material composed of (A) 100 parts by weight of a particular poly(arylene thioether) block copolymer, (B) up to 50 parts by weight of at least one other thermoplastic resin and (C) up to 10 parts by weight of at least one filler.

Abstract: Disclosed herein are stretched poly(arylene thioether) block copolymer films and production processes thereof, said block copolymer film comprising a thermoplastic material composed of (A) 100 parts by weight of a particular poly(arylene thioether) block copolymer, (B) up to 100 parts by weight of at least one other thermoplastic resin, and (C) up to 15 parts by weight of at least one filler.

Abstract: Described herein are blends having increased crystallization rates comprising (a) at least 98 percent by weight of a poly(aryl ether ketone) having a melting point no more than about 390.degree. C., and (b) 2 percent by weight or less of another poly(aryl ether ketone) having a melting point higher than about 400.degree. C. The blends retain their attractive crystallization behavior even after prolonged treatment in the melt. The blends of this invention may be fabricated into any desired shape, for example, moldings, coatings, films, fibers, and particularly, for use as electrical insulation for electrical conductors.

Abstract: Described herein are novel amino-terminated poly(aryl ether ketone) oligomers and methods for their production. These amino-terminated poly(aryl ether ketone) oligomers are used as building blocks for a variety of polymers and copolymers.

Abstract: A low viscosity epoxy resin, i.e., a low viscosity polyglycidyl derivative, of an aminophenol having at least one alkyl group on its aromatic ring of which viscosity is 15 poises or below as measured at 25.degree. C., a resin composition containing said resin, and a fiberreinforced composite material containing as matrix a cured product of said epoxy resin composition and a fiber as reinforcing material.

Abstract: Fiber composite useful in automotive construction and the aerospace industry are composed of a plastics matrix and reinforcing fibers, this plastics matrix comprising a mixture of from 90 to 40% by weight of polyether sulfone and 10 to 60% by weight of polyether ketone.

Abstract: Polyaryl ether ketones essentially consist of(A) 55-95 mol % of repeating units of the general formula ##STR1## where s and t are each 0, 1, 2 or 3 and Q and T are each --O-- or --CO--, or their C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 alkoxy, aryl, chlorine or fluorine derivatives substituted in the nucleus, and(B) 5-45 mol % of repeating units of the general formula II ##STR2## where Ar.sup.1, Ar.sup.2, Ar.sup.3, ar.sup.4 and Ar.sup.5 independently of one another are each a phenylene, biphenylene or naphthylene group or a C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, aryl, chlorine or fluorine derivative of this group, Q' and T' are each --O--or --CO-- and s' and t' are each 0, 1, 2 or 3, with the proviso that one or more of the groups Ar.sup.1, Ar.sup.2, Ar.sup.3, Ar.sup.4 and Ar.sup.5 are a biphenylene or naphthylene group or a C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, aryl, chlorine or fluorine derivative of such a group and, if Ar.sup.

Abstract: A resin composition comprising (a) 100 parts by weight of a block copolymer composed of polyphenylene sulfide segments and polyphenylene sulfide sulfone segments and (b) 0.01 to 20 parts by weight of at least one compound selected from the group consisting of epoxy resins, maleimide compounds, N,N'-diarylcarbodiimide compounds and organosilane compounds and as required, (c) an organic filler.

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 ketone and(C) from 0.1 to 30% by weight of a polymeric component containing hydroxyl groupsand in addition(D) from 0 to 50% by weight of an impact-modifying rubber and(E) from 0 to 60% by weight of fibrous and/or particulate fillers.

Abstract: Novel thermoplastic polymers of relatively high glass transition temperatures are characterized by five-carbon moieties having a keto group in the 3-position alternating with bis(benzoheterocyclic) moieties. The polymers are produced by reaction of a keto-C.sub.5 source, selected from 4-oxoheptanedioic acid compounds or a 1,6-dioxa [4.4] spirodilactone, with a bis(ortho-phenylene amine) compound. Further cyclization of the initial polymer product or reaction of a bis(ortho-phenylenediamine) provides a polymer having a hexacyclic repeating unit.

Abstract: Described herein are miscible poly(aryl ether ketone) blends possessing increased crystallization rates. The novel compositions contain (a) from about 98 to about 99.9 percent by weight of a miscible poly(aryl ether ketone) blend, and (b) from about 0.1 to about 2 percent by weight of a poly(phenylene sulfide) or a copolymer thereof. The compositions of the instant invention retain their attractive crystallization behavior even after prolonged treatment in the melt. Moreover, these compositions display excellent mechanical properties as well as excellent chemical and heat resistance.

Abstract: A polymer composition containing a polyaryletherketone and a polysulphone, where the polysulphone contains the repeating units--Ph--SO.sub.2 --Ph--Ph--SO.sub.2 --Ph--and--Ar--linked through ether linkages. The polysulphone contains 50 to 75% molar of the units --Ar--, and Ar may contain more than one aromatic group linked by aliphatic hydrocarbon groups, or by --SO--, --SO.sub.2 -- or --CO--.A composition containing a high proportion of the polyaryletherketone shows a reduced shrinkage compared to the polyaryletherketone alone. A composition containing a high proportion of the polysulphone has improved solvent resistance and stress crack resistance compound to the polysulphone alone. The composition can be used for production of film or fibre or for wire coating or may include other additives such as fillers or fibrous reinforcing agents, e.g. glass or carbon fibre.

Abstract: Described herein are blends of a particular poly(aryl ether), a poly(alkylene terephthalate), and a nucleating agent. These blends are suitable for molding into electrical connectors which do not blister when subjected to vapor phase reflow and infrared reflow applications.

Abstract: A low viscosity epoxy resin, i.e., a low viscosity polyglycidyl derivative, of an aminophenol having at least one alkyl group on its aromatic ring of which viscosity is 15 poises or below as measured at 25.degree. C., a resin composition containing said resin, and a fiber-reinforced composite material containing as matrix a cured product of said epoxy resin composition and a fiber as reinforcing material.

Abstract: Disclosed herein is a stretched poly(arylene thioether-ketone) film made of a thermoplastic material which comprises (A) 100 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR1## and having a melting point, Tm of 310.degree.-380.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g and a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C., and a reduced viscosity of 0.3-2 dl/g as determined by viscosity measurement at 25.degree. C. and a polymer concentration of 0.5 g/dl in 98 percent by weight sulfuric acid; and optionally, (B) up to 100 parts by weight of at least one of thermoplastic resins and/or up to 15 parts by weight of at least one of fillers. Its production process is also disclosed.

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: Disclosed herein are poly(arylene thioetherketone) fibers obtained by melt-spinning a thermoplastic material which comprises 100 parts by weight of a melt-stable poly(arylene thioether-ketone) (PTK) and optionally, up to 50 parts by weight of at least one of thermoplastic resins. The PTK has predominant recurring units of the formula ##STR1## wherein the --CO-- and --S-- are in the para position to each other, and has a melting point, Tm of 310-380.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g, a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C., and a reduced viscosity of 0.3-2 dl/g as determined by viscosity measurement at 25.degree. C. and a polymer concentration of 0.5 g/dl in 98 percent by weight sulfuric acid. The PTK fibers of this invention have high heat resistance and strength.

Abstract: Disclosed herein is a melt-stable poly(arylene thioether-ketone) composition, which comprises:(A) 100 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR1## and having a melting point, Tm of 310.degree.-380.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g, a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C. and a reduced viscosity of 0.2-2 dl/g;(B) 0-400 parts by weight of at least one of thermoplastic resins; and(C) at least one of fibrous fillers and/or at least one of inorganic fillers in a proportion of 0-400 parts by weight per 100 parts by weight of the sum of said components (A) and (B).At least either one of the components (B) or (C) is contained in a proportion of at least 0.1 part by weight per 100 parts by weight of the component (A).

Abstract: Heat-resistant resin composition comprising (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher of recurring units of the formula ##STR1## and a logarithmic viscosity number of 0.1 to 1.0 dl/g; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR2## wherein the --CO-- and --S-- are in the para position to each other, and having a melting point of 310.degree.-380.degree. C., a residual melt crystallization enthalpy of at least 10 J/g, a melt crystallization temperature of at least 210.degree. C. and a reduced viscosity of 0.2 to 2 dl/g; and (C) at least one of fibrous fibers and/or at least one of inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component comprising said poly(arylene sulfide) and said poly(arylene thioether-ketone).

Abstract: Disclosed herein is a stretched poly(arylene thioether-ketone) film made of a thermoplastic material which comprises (A) 100 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR1## and having a melting point, Tm of 310.degree.-380.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g and a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C., and a reduced viscosity of 0.3-2 dl/g as determined by viscosity measurement at 25.degree. C. and a polymer concentration of 0.5 g/dl in 98 percent by weight sufuric acid; and optionally, (B) up to 100 parts by weight of at least one of thermoplastic resins and/or up to 15 parts by weight of at least one of fillers. Its production process is also disclosed.

Abstract: The invention relates to curable compositions comprising(a) a copolyether resin having end groups --OR.sup.1 linked direct to phenyl nuclei and containing 1 to 50 mol % of repeating structural units of formula I ##STR1## and 99 to 50 mol % of repeating structural units of formula II ##STR2## wherein R.sup.1 is hydrogen, a phenylene radical substituted by amino agroups or ethylenically unsaturated radicals or is a 2,3-epoxypropyl radical, R.sup.2 is a direct C--C bond or a group of formula --C.sub.r H.sub.2r --, --O--, --S--, --CO-- or --SO.sub.2 --, r is 1 to 20, R.sup.3 is hydrogen or methyl, R.sup.4, R.sup.5 and R.sup.7 are inert substituents, m, n and o are each independently 0, 1 or 2, p is 1 or 2, R.sup.6 is a radical of a bisphenol, X and Y are --SO.sub.2 -- or --CO--, and(b) at least one compound of formula VIII, IX or X ##STR3## wherein A forms a maleimidyl, nadicimidyl, allylnadicimidyl or methallylnadicimidyl system, and R.sup.14 and R.sup.

Abstract: The invention relates to copolyether resins having end groups --OR.sup.1 linked direct to phenyl nuclei and containing 1 to 50 mol % of repeating structural units of formula I ##STR1## and 99 to 50 mol % of repeating structural units of formula II ##STR2## wherein R.sup.1 is hydrogen, a phenylene radical substituted by amino groups or ethylenically unsaturated radicals or is a 2,3-epoxypropyl radical, R.sup.2 is a direct C--C bond or a group of formula --C.sub.r H.sub.2r --, --O--, --S--, --CO-- or --SO.sub.2 --, r is 1 to 20, R.sup.3 is hydrogen or methyl, R.sup.4, R.sup.5 and R.sup.7 are inert substituents, m, n and o are each independently 0, 1 or 2, p is 1 or 2, R.sup.6 is a radical of a bisphenol, X and Y are --SO.sub.2 -- or --CO--.The compounds can be used in particular in conjunction with unsaturated imides as matrix resins for the preparation of fibrous composite structures.

Abstract: Described herein is process for preparing polyaryletherketones from a polyketal by converting the polyketal to a polyaryletherketone in the presence of a Group IIA, IIB, IVA, VIIB, IIIA, IVB, IB or VIII metal salt.

Abstract: In one embodiment, a process is provided for treating virgin arylene sulfide resins, wherein a heated polymer slurry, comprising a virgin arylene sulfide resin and water, is contacted by a buffer solution having a pH less than about 9.35 but greater than that necessary to result in at least a partial curing of the virgin arylene sulfide resin. In a further embodiment, a process is provided for treating a virgin arylene sulfide resin, wherein a virgin arylene sulfide resin is slurried in a buffer solution having a pH less than about 9.35 but greater than that necessary to result in at least a partial curing of the virgin arylene sulfide resin. The treating process of this invention is conducted at an elevated temperature, below the melting point of the virgin arylene sulfide resin, while in the substantial absence of a gaseous oxidizing atmosphere. The treated arylene sulfide resins are recovered from the polymer slurry in a manner which does not result in at least a partial curing of the treated resin.

Abstract: Disclosed herein is a molded or formed poly(arylene thioether-ketone) article made of a thermoplastic material which comprises 100 parts by weight of a melt-stable poly(arylene thioether-ketone) (PTK) and if desired, up to 100 parts by weight of at least one of thermoplastic resins and/or up to 300 parts by weight of at least one of fibrous fillers and/or least one of inorganic fillers. The PTK has predominant recurring units of the formula ##STR1## wherein the --CO-- and --S-- are in the para position to each other, and has a melting point, Tm of 310.degree.-380.degree. C., a residual melt cyrstallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g, a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C., and a reduced viscosity of 0.2-2 dl/g as determined by viscosity measurement at 25.degree. C. and a polymer concentration of 0.5 g/dl in 98 percent by weight sulfuric acid.

Abstract: The present invention discloses a polyarylene thioether of high crystallizing rate having a necessary time for 50% crystallization of not more than 50 seconds upon crystallization of a molten polymer at 250.degree. C. as well as a production process therefor.

Abstract: The invention relates to polycycloacetals of formula I ##STR1## wherein n is an integer from 1 to 500, x and y are each independently of the other 0 or 1, R.sup.1 is a carbon atom or a tetravalent hydrocarbon radical having a molecular weight not greater than 1000 and which can additionally contain ether oxygen atoms or oxygen atoms in hydroxyl, carbonyl or epoxy groups, and R.sup.2 is a tetravalent hydrocarbon radical derived from a dialdehyde or a diketone.The polycycloacetals can be used together with conventional hardeners and/or curing catalysts for epoxy resins for the fabrication of cross-linked (cured) products having good properties, especially having excellent fastness to solvents, light and weathering.

Abstract: Novel sulfur containing polyarylene polyether oligomers are disclosed. The oligomers are prepared through condensing salts of hydroxy and/or thio aromatic compounds, halobenzenoid compounds bearing two replaceable halogens and metal or ammonium sulfides following by end capping the resultant oligomer intermediate with a salt of a hydroxy and/or thio aromatic compound.

Abstract: Disclosed is a novel polymer of this invention which comprises having a recurring unit represented by the formula: ##STR1## and having a reduced viscosity (.eta.sp/c) of 0.2 dl/g or more at 60.degree. C. in a solution of a concentration of 0.2 g/dl in p-chlorophenol as a solvent, a method for preparing the same which comprises reacting a dihalogenobenzonitrile represented by the formula: ##STR2## wherein X represents a halogen atom, with an alkali metal salt of resorcin represented by the formula: ##STR3## wherein M represents an alkali metal, in the presence of a solvent; and then treating the reaction product obtained by water or alcohol, and molding materials and molded products employing the polycyanoaryl ether.

Abstract: Virgin poly(arylene sulfide) resins are oxidatively cured by heat treatment at an elevated temperature below the melting point of the resin, under an oxidizing atmosphere comprising less than a 20 volume % oxygen concentration. The resulting polymer exhibits drastically improved thermal stability with no apparent sacrifice in physical properties.

Abstract: Described herein are novel block copolymers wherein one block is a poly(aryl ether ketone) oligomer and other block is a liquid crystalline polyester oligomer. Processes for the preparation of the subject copolymers are also described. The novel block copolymers display excellent mechanical properties, good high temperatures stability and excellent solvent and chemical resistance.

Abstract: Disclosed herein is a poly(arylene thioether-ketone) composition improved in melt stability and crystallinity, which comprises (A) 100 parts by weight of a melt-stable poly(arylene thioether-ketone) (PTK) and (B) 0.1-30 parts by weight of at least basic compound selected from the group consisting of the hydroxides, oxides and aromatic carboxylic acid salts of Group IIA metals of the periodic table other than magnesium and the hydrocarbyl oxides, aromatic carboxylic acid salts, carbonates, hydroxides, phosphates and borates of Group IA metals of the periodic table. The phosphates and borates include condensation products. The PTK has predominant recurring units of the formula ##STR1## and having a melting point, Tm of 310.degree.-380.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g, a melt crystallization peak-temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C. and a reduced viscosity of 0.2-2 dl/g.

Abstract: The resins resulting from converting dicyclopentadiene-phenol adducts to their corresponding vinylbenzyl ethers are an excellent matrix in which to embed fibers to produce a composite. Such resins, especially as a blend of materials with varying molecular weight distribution, are amorphous materials whose glass transition temperature is well under the curing temperature, and whose solubility permits solutions with high solids content so as to afford coatings with high resin content. The extensively crosslinked polymer resulting from therma, photochemical, or free radical initiated polymerization has excellent thermal and electrical properties for use in multilayer circuit boards.

Abstract: The resins resulting from converting the phenol-formaldehyde type condensation products of dicyclopentadiene-phenol adducts with selected aldehydes and ketones to their corresponding vinylbenzyl ethers are an excellent matrix in which to embed fibers to produce a composite. Such resins, especially as a blend of materials with varying molecular weight distribution, are amorphous materials whose glass transition temperature is well under the curing temperature, and whose solubility permits solutions with high solids content so as to afford coatings with high resin content. The extensively crosslinked polymer resulting from thermal, photochemical, or free radical initiated polymerization has excellent thermal and electrical properties for use in multilayer circuit boards.

Abstract: Described are blends of a biphenyl containing poly(acryl ether sulfone) and a poly(acryl ether ketone). These blends exhibit improved mechanical properties and environmental stress rupture resistance.

Abstract: Two step process for preparing high molecular weight, high melting polyarylethers by polycondensing an alkyl-substituted dihydric phenol and an aromatic dihalide, and thereafter dealkylating the polycondensation product.

Abstract: Described are crystalline block copolymers displaying high glass transition temperatures, excellent mechanical properties, excellent chemical and thermal stability, and good melt processability. These block polymers contain segments of crystalline poly(aryl ether ketones).

Abstract: Described herein are crystalline block polymers and chain extended polymers containing blocks of crystalline poly(aryl ether ketones). Also, described herein are monomers and oligomers suitable for preparing the crystalline block polymers and chain-extended polymers. Further, described herein are methods for producing the crystalline block and chain-extended polymers, as well as the monomers and oligomers.

Abstract: Non-miscible blends comprising, as a major component, a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and, as a minor component, an oligomer derived from an epihalohydrin and a hydroxyphenylalkane, demonstrate improved processability.