Abstract: Described herein are novel crystalline chain extended poly(aryl ether ketones) which display excellent toughness, fabricability and very good high temperature and solvent resistance.

Abstract: Polyether resins containing aralkoxy end groups and 100 to 10 mol % of the repeating structural unit of formula II ##STR1## and 90 to 0 mol % of the repeating structural unit of formula III ##STR2## in which formulae A is an unsubstituted or substituted aliphatic radical, X is a bridge member and Y is a radical of a divalent phenol are self-crosslinkable, affording products which are insoluble in organic solvents and which have high glass transition temperatures.

Abstract: Thermally stable polymers may be cross-linked by appending biphenylene moieties to the polymer backbone, then heating the modified polymer at a temperature in excess of about 300.degree. C. The cross-link density of the cured polymer can be controlled by varying the relative population of biphenylene moieties on the polymer backbone. Properties of the modified but uncured polymer are essentially the same as those in the original thermally stable polymer.

Abstract: Copolycarbonates are prepared by ring-opening cyclic polycarbonate oligomers with various nucleophilic polymers. The latter include "living" anionic vinyl polymers; polymers such as polyphenylene ethers or hydroxyaryl-terminated polyimides which contain deprotonated hydroxy or carboxy groups; polymers containing neutral nucleophilic moieties, such as secondary amine-terminated polyimides, polyethersulfones and polyetherketones; and anionic polymers of ring-opened compounds such as cyclic polysiloxanes, lactams and lactones.

Abstract: In the preparation of block copolyethers which contain sulfonyl and keto groups by polycondensation of aromatic dihalogen compounds and bisphenols in the presence of an alkali metal carbonate in N-methylpyrrolidin-2-one as a solvent, an amorphous polyether sulfone block having a molecular weight Mn of from 1,500 to 30,000 is prepared in a first stage, and, in a second stage, a polyetherketone block is polymerized onto the living chain ends, the molar ratio of sulfonyl to keto groups being from 90:10 to 40:60.

Abstract: This invention relates to a curable resin composition comprising (a) a component selected from the group consisting of a dicyanate-terminated aromatic polysulfone oligomer, a dicyanate-terminated aromatic polyketone oligomer and mixtures thereof, (b) a cyanate ester component selected from the group consisting of polyfunctional aromatic cyanate ester monomers having at least two cyanate groups bonded to their aromatic ring, prepolymers of the cyanate esters and prepolymers of the cyanate ester monomers and amines, and (c) a bismaleimide component selected from the group consisting of bismaleimides, bismaleimides prepolymers and prepolymers of the bismaleimides and amines.

Abstract: Diamines of the structure ##STR1## Wherein X is --SO.sub.2 -- or --CO--, Y is O or S, and Ar is a linear aryl ether moiety comprising from 1 to 80 aryl rings, are epoxy resin curing agents providing cured resins with improved moisture resistance and toughness. The resins are particularly useful in preparing prepregs and composites.

Abstract: A method of increasing the molecular weight of a poly(aryl ether) comprising providing a mixture of (1) at least one polyaryl ether comprising polymer chains having end groups selected from groups of formula--Ar--X, preferably --Y--Ar--X and --Ar--OXand (2) a reagent having nucleophilic activity selected from (a) alkaline salts of Group I or Group II metals (as hereinafter defined) and (b) reagents have radicals --X and --OZ, reactive respectively with the end groups --Ar--OZ and --Ar--X, wherein when the end group is --Ar--X the reagent is either a difunctional reagent having either both end groups in the form of reactive --OZ groups or a difunctional reagent having one reactive --OZ group and one reactive --X group and when the end group is --Ar--OZ the reagent is a difunctional reagent having reactive end groups --X, and wherein Ar represents an arylene radical, preferably a phenylene radical, X is a monovalent radical capable of nucleophilic displacement from Ar, preferably selected from halogen, nitrile

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

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

Abstract: This invention describes the preparation of reactive engineering thermoplastics containing arylcyclobutene groups pendant to an aromatic ring. The polymers are prepared by alkylation or acylation of an engineering thermoplastic which contains one or more aromatic groups capable of being alkylated or acylated with a suitable arylcyclobutene alkylating or acylating agent. The prepared reactive engineering thermoplastics containing pendant arylcyclobutene groups may be cross-linked and cured by heating above about 200.degree. C.

Abstract: Secondary amine-terminated aromatic oligomers are prepared by conventional reactions for the formation of such polymers as polyimides, polyethersulfones and polyetherketones, using such compounds as methylamino or phenylamino anilines or phenols as endcapping agents. The secondary amine-terminated oligomers may be reacted with cyclic polycarbonate oligomers to prepare copolyurethanecarbonates which are useful as engineering thermoplastics.

Abstract: Compositions comprising a poly(arylene sulfide) which crystallizes to a fine-grained crystalline morphology are provided. A method is also provided for treating compositions comprising a poly(arylene sulfide) by incorporation of a crystalline morphology altering additive, heating the resulting mixture above the melting point of the poly(arylene sulfide) and cooling the mixture at a rate of less than 50.degree. C. per minute. Exemplary additives include a poly(arylene sulfide-ketone) and a polyaryl ketone.

Abstract: The invention relates to curable mixtures comprising(a) at least one epoxy resin containing on average more than one epoxy group in the molecule,(b) at least one diethylphenyl-biguanide of formula I ##STR1## or a combination of a biguanide of formula I and a ketone resin, a ketone/formaledhyde resin or a phenoxy resin, as curing agent, and(c) optionally a curing accelerator.These mixtures are suitable for example as casting resins, laminating resins and, in particular, as powder coating compositions.

Abstract: Described herein are alloys comprising a poly(arylene sulfide) and a poly(aryl ketone). These alloys have a good combination of mechanical properties and unexpectedly display a higher strength than would be expected from the weight averaged constituent values.

Abstract: Described herein are novel block copolymers wherein one block is a poly(aryl ether ketone) oligomer and the 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: Linear polyether resins containing 100 to 10 mol % of the repeating structural unit of formula I ##STR1## and 90 to 0 mol % of the repeating structural unit of formula II ##STR2## wherein A is a linear unsubstituted or methyl-substituted alkylene group containing 4 to 100 carbon atoms in the linear alkylene chain, X denotes bridge members as defined in claim 1 and Y is an aromatic radical of a divalent phenol as defined in claim 1, are self-crosslinkable and can be crosslinked by heating to a temperature of not less than 250.degree. C. or by irradiation with energy-rich electromagnetic rays, affording products which are insoluble in organic solvents and which have high glass transition temperatures.

Abstract: A crystallizable thermoplastic aromatic polyetherketone, the polymeric chain of which contains the repeat unit--Ar.sub.1 --CO--Ar.sub.2 --O--where Ar.sub.1 and Ar.sub.2 are aromatic radicals which may be the same or different and comprise at least one aromatic ring, the polymeric chains having terminal ionic groups --A--X, where A is an anion and X is a metal cation. The anion is preferably selected from sulphonate, carboxylate, sulphinate, phosphonate, phosphate, phenate and thiophenate and the cation is preferably alkali metal or alkaline earth metal. The products may be used in blends with other polyetherketones as a nucleant for the other polyetherketones.

Abstract: Polyazomethines having a high electrical conductivity obtained by polycondensation reaction of bicarbonyl compounds with aromatic diamines of formula: H.sub.2 N--Ar--CH.sub.2 --Ar--NH.sub.2, in which Ar is an aryl group optionally substituted, and by subsequent oxidation capable of transforming at least in part, the methylene group of the amine into a carbonyl group.The present invention relates to new electrically conductive polymers belonging to the class of the polyazomethines having high conductivity values, and to the process for preparing the same.

Abstract: Modified phenolic resins and cured resins prepared therefrom.

Abstract: A method of increasing the molecular weight of a poly(aryl ether) comprising providing a mixture of (1) at least one polyaryl ether comprising polymer chains having end groups selected from groups of formula--Ar--X,preferably--Y--Ar--X and --Ar--OXand (2) a reagent having nucleophilic activity selected from (a) alkaline salts of Group I or Group II metals (as hereinafter defined) and (b) reagents have radicals --X and --OZ, reactive respectively with the end groups --Ar--OZ and --Ar--X, wherein when the end group is --Ar--X the reagent is either a difunctional reagent having either both end groups in the form of reactive --OZ groups or a difunctional reagent having one reactive --OZ group and one reactive --X group and when the end group is --Ar--OZ the reagent is a difunctional reagent having reactive end groups --X, and wherein Ar represents an arylene radical, preferably a phenylene radical, X is a monovalent radical capable of nucleophilic diplacement from Ar, preferably selected from halogen, nitrile (CN

Abstract: Described herein is an article molded from a blend of a poly(aryl ether ketone) and a poly(aryl ether sulfone). These molded articles exhibit decreased shrinkage and warpage.

Abstract: Poly(aryl ether) resins having repeat units of the structure--O--E--O--E'--wherein E is the residuum of a dihydric phenol and E' is the residuum of a benzenoid compound having an inert electron withdrawing group in at least one of the positions ortho and para to the valence bonds, can be sulfonated by first reacting with a silyl halosulfonate, or the combination of a silyl halide and a halosulfonic acid, to form a resin having pendant silyl sulfonate groups, followed by the base cleavage of the silyl moiety to form the sulfonated resin. The sulfonated resins may be used to make membranes.

Abstract: Thermoplastic molding materials containing a mixture ofA. a heat-stable polymer, e.g. a polyether sulfone or polysulfone, which does not contain any reactive groups, andB. a heat-stable polymer which contains reactive groups, preferably nitrile or thioaryl groups and/or sulfur bridges,can be processed to moldings, which can be crosslinked, for example by being heated at above 200.degree. C., so that the plastic matrix becomes virtually insoluble.

Abstract: A membrane of a substantially non-crosslinked organic polymer which contains complex-forming groups bonded to the polymer chain via an alkylene radical, at intervals of not less than 4 carbon atoms.

Abstract: Described herein are blends of at least two separately made crystalline polyarylether resins formed into an intimate moldable mixture, each resin having, prior to being formed into said mixture (i) a different crystalline melting temperature and a different glass transition temperature, of (ii) a different molecular arrangement of unit components each resin comprising 1,4 phenylene units separated by ether oxygen and at least one of said resins containing 1,4-phenylene unit separated by a divalent carbonyl radical.

Abstract: Described herein are novel polyetherimide produced by the reaction of a dianhydride and a diamine having a molecular weight .gtoreq.1500. These polyetherimides have good melt processability and a good combination of high temperature properties.

Abstract: A resin composition comprising (A) a polyphenylene sulfide, (B) an epoxy compound, and as an optional component, a reinforcing material, a filler and/or a fire retardant.

Abstract: Continuous halogenation of polymers is achieved by contacting polymer and halogenating agent in a continuous flow device in which the reactants are present as either co-continuous phases or wherein the halogenating agent is present as a continuous phase and the polymer is present as a discontinuous phase, the polymer is subjected to deformation during reaction and in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture. In a preferred embodiment the polymer passes through three extruder-reactor zones under controlled conditions to achieve halogenation: feed, reaction (preferably vented), neutralization, and optionally a wash and exit zone. A continuous halogenating agent phase is achieved during reaction by avoiding complete filling of the reaction zone with polymer. Various halogenated polymers are produced, for example, halogenated linear low density polyethylene and halogenated butyl rubber.

Abstract: Biphenylene end-capped low molecular weight thermally stable aromatic polymers and the process for their preparation. The invention is further directed to crosslinked biphenylene end-capped aromatic polymers and to the process for their preparation. The process for preparing the biphenylene end-capped low molecular weight thermally stable aromatic polymers comprises carrying out a misbalanced polymerization reaction of a suitable aromatic aminoketone compound and a suitable aromatic ketomethylene compound and thereafter adding a monofunctional biphenylene compound.

Abstract: Disclosed is a method for fluorinating the surface of a polymeric solid for improving a surface property of such solid while substantially maintaining the bulk physical properties of said solid. This method comprises contacting the polymeric solid with dilute fluorine gas at a temperature not substantially above about room temperature and at a pressure not substantially above about 1 atmosphere for a time adequate to partially fluorinate said solid surface by forming stable fluorocarbon groups wherein the ratio of --CF.sub.2 -- groups to --CHF-- groups is not substantially above about 1:1, the proportion of oxygen-providing groups presend during said fluorination being restricted to an amount whereby substantially no oxidation of said surface occurs.

Abstract: High-temperature coating materials are prepared by cross-linking copolymers of oligomers produced by nickel catalyzed coupling of unsubstituted aryl polyhalides with substituted organic halides.

Abstract: An epoxy resin substantially represented by the general formula ##STR1## where Ar.sup.1 is a residual group of a dihydric phenol derived from a compound having one or two benzene nuclei, Ar.sup.2 is residual group of a halogen-substituted benzenoid compound having two halogen atoms on its nuclei and represented by the formula --Ar.sup.3 --Y--Ar.sup.4 -- where each of Ar.sup.3 and Ar.sup.4 is a hydrocarbon group having a divalent benzene nucleus and Y is a sulfone group or a carbonyl group, and n is an integer of from 1 to 50.

Abstract: A plastics alloy for a bearing material comprising polyphenylene sulphide and polyether ether ketone. The alloy is formed by powder mixing, melt blending or solvent blending and applied to a metal backing either as a sheet, or in solution or in powder form. The alloy is heated and roll bonded to the backing.

Abstract: The present invention relates to a photopolymerization process comprising irradiating a photopolymerizable material with U.V. light of wave length 250 to 400 nm in the presence of a photosensitizing amount of a photoinitiator of formula I, ##STR1## in which R is hydrogen or halogenR.sub.1 is alkyl, cycloalkyl, benzyl, optionally substituted phenyl or (a) ##STR2## either R.sub.2 is optionally substituted alkyl, benzyl, C.sub.6 H.sub.5 --CH.dbd.CH--, 2-thienyl, 2-furyl, 2-(3-chloro)benzothienyl or optionally substituted phenyl, andR.sub.3 is hydrogen or R.sub.2 and R.sub.3 form a radical of formula (b) ##STR3## in which X is a direct bond, --O--, --S--, --CH.sub.2 --, ##STR4## and R.sub.4 and R' have one of the significances of R.sub.2 and R, respectively,with the proviso that when R.sub.1 is (a) R.sub.3 is hydrogen and R.sub.2 and R.sub.4 are free from halogen atoms.

Abstract: Novel compositions comprising acetylenic polyhemi-amic acid compositions and processes for their preparation are disclosed herein. These new compositions are primarily derivatives of anhydride-terminated aromatic polyimides from which they are prepared by amidation to provide acetylenic amide groups having terminal .dbd.C.tbd.CH groups as hemi-amic acid groups of their derivatives. These new compositions are more tractable than the original anhydride-terminated polyimides and can be converted at appropriate lower temperatures to crosslinked, insoluble, infusible polymers without by-product formation thereby extending greatly the applications for which the aromatic polyimides can be employed. Also included are monomeric compounds containing acetylenic amide groups derived from monomeric tetracarboxylic dianhydrides. These are particularly useful as crosslinking agents.

Abstract: Novel resin binders for foundry sand molds and cores are provided by reacting a polyol component comprising a phenol ketone resin, a reactive solvent and a cross-linking agent in a solution for these components with a solution of an organic polyisocyanate. The foundry binder cures rapidly at ambient temperature in the presence of a tertiary amine curing agent to provide strong foundry molds and cores. Polyether polyols may also be incorporated in the polyol component of the novel resin binder.

Abstract: There is provided a desensitizer used in a quick-drying desensitizing ink for no-carbon copy paper, which is a compound represented by the formula ##STR1## wherein R.sup.1 represents hydrogen atom or methyl group; R.sup.2 represents hydrogen atom, a methyl group, a phenyl group which may have as substituent an alkyl group having 1 to 12 carbon atoms, ##STR2## and l and m are integers of 1 or greater than 1, l+m being not greater than 46, and p is zero or an integer of 1, provided that when p is zero R.sup.

Abstract: A thermostable heterocyclic polymer constituted by monomer units of the general formula ##STR1## where R.sup.1 and R.sup.2 denote an organic radical having from 2 to 1000 carbon atoms;a radical having 2 to 1000 carbon atoms, containing:1 to 1000 atoms of Si,and/or 1 to 1000 atoms of F,and/or 1 to 1000 atoms of Cl,and/or 1 to 1000 atoms of Br,and/or 1 to 1000 atoms of N,and/or 1 to 1000 atoms of S,and/or 1 to 1000 atoms of P,and/or 1 to 1000 atoms of B,and/or 1 to 1000 atoms of O,R.sup.1 and R.sup.2 being either the same or different;R.sup.3 .dbd.NH, CH.sub.2 ;R.sup.4 is a radical which, with R.sup.3 .dbd.NH, may be ##STR2## while with R.sup.3 .dbd.CH.sub.

Abstract: The present invention relates to novel, substantially insoluble and infusible plastics which are cross-linked by way of triazine rings and, optionally, by way of tri-substituted bis-oxymethylene urea groups or urethane groups.

Abstract: A graft copolymer of an episulfide and the reaction product of a polyalkylenimine and a lower ketone is water-soluble or water-dispersible. The copolymer is made by adding an episulfide to the polyalkylenimine dissolved in a lower ketone and heating below the boiling point of the solvent. The resulting graft copolymer is a corrosion inhibitor.

Abstract: A plastics alloy for a bearing material comprising polyphenylene sulphide and polyether ether ketone. The alloy is formed by powder mixing, melt blending or solvent blending and applied to a metal backing either as a sheet, or in solution or in powder form. The alloy is heated and roll bonded to the backing.