Abstract: A process and product produced therefrom for preparing a melt stable, high molecular weight poly(arylene sulfide ketone) from the addition of water to a reaction mixture containing a polyhalobenzophenone and an alkali metal sulfide. The water being present in a molar ratio of about 4.5:1 to about 8:1 with respect to the alkali metal sulfide.

Abstract: A process is provided for the production of aromatic sulfide/ketone polymers which comprises contacting under suitable polymerization conditions: (1) at least one dihaloaromatic ketone, (2) at least one organic amide, (3) at least one alkali metal hydrosulfide, (4) water, and (5) at least one member selected from the group consisting of (a) alkali metal carbonates and (b) mixtures of alkali metal carbonate with alkali metal hydroxide.

Abstract: This invention describes the preparation of some new Mannich polymers and copolymers and teaches their general use as photosensitizers for onium salts for use in the initiation of free radical polymerization of vinyl monomers. These Mannich polymers are unexpectedly more efficient as photosensitizers than are the non-polymeric photosensitizers.

Abstract: An aromatic polythioetherimide having a recurring unit of the following general formula (II): ##STR1## wherein --Ar--, which may be the same or different in the polymer, each represents a divalent aromatic residue and ##STR2## which may be the same or different in the polymer, each represents ##STR3## The aromatic polythioetherimides can be melt-molded, are excellent in the balance of mechanical properties and heat resistance, and can be widely used for parts in the electric and electronic fields, housings, automobile parts, aircraft interior parts, sliding parts, gears, cams, insulating materials, heat-resistant films, heat-resistant varnishes, heat-resistant fibers, etc., and preferably can be used as an engineering plastic for gears, cams, etc., and a heat-resistant insulating film material for electronic hardwares.

Abstract: A curable composition comprising (a) a curable polyimide soluble in organic solvents and (b) a polymerization initiator as essential components, said polyimide consisting of recurring units represented by the formula ##STR1## wherein, each of X, X.sub.1, X.sub.2, X.sub.3 and X.sub.4 is a tetravalent carbocyclic or heterocyclic residue, each of Y.sub.1, Y.sub.2, and Y.sub.3 is a divalent carbocylic or heterocyclic residue, at least one of Z.sub.1 and Z.sub.2 is a residue having a reactive carbon-carbon double bond, and each of l, m, and n is an integer from 0 to 20, preferably from 0 to 10. The polyimide may include (a) polyacrylate compounds (b) bis-imide compounds (c) photosensitive polyimide precursors (d) oxime initiators (e) a 3 component sensitizer of a phenone compound, a mercapto compound, and an arylamine-alkanol, or mixtures of a,b,c,d, and e.

Abstract: A new process for making polyketones which comprises reacting a diacylaromatic compound with a bis(trichloromethylketone) compound in the presence of a basic catalyst. New poly-.beta.-diketones have been prepared using the process.

Abstract: A bis(o-diamine) is reacted with a bis(benziloxy)-2,2'-bis(arylethynyl)biphenyl to provide a qunioxaline polymer having pendant phenylethynyl groups. These polymers can be cured to provide thermally stable polymer compositions.

Abstract: An aromatic polythioetheramide-imide having a recurring unit of the following general formula (II): ##STR1## wherein --Ar--, which may be the same or different in the polymer, each represents a divalent aromatic residue. The aromatic polythioetheramide-imides are excellent in the balance of mechanical properties, heat resistance and moldability and can be used widely for parts in electric and electronic fields, housings, automobile parts, aircraft interior parts, sliding parts, gears, insulating materials, heat-resistant films, heat-resistant varnishes, heat-resistant fibers, etc.

Abstract: An aromatic polyamide having a high molecular weight is produced by a polycondensation reaction of an aromatic aminocarboxylic acid and/or a mixture of an aromatic dicarboxylic acid and an aromatic diamine in a polar solvent in the presence of a dehydrating catalyst with heating at a temperature of about 160.degree. C. or higher.

Abstract: Aromatic oligomers, in particular arylene ketone and arylene sulfone oligomers, are prepared by reacting an appropriate monomer system in the presence of free Lewis acid and a complex between a Lewis acid, for example, aluminum trichloride, and a Lewis base, for example, N,N-dimethylformamide, and, optionally, a diluent, such as methylene chloride. The process is particularly advantageous for the preparation of substantially or all paralinked arylene ether ketone oligomers as the presence of the Lewis acid/Lewis base complex markedly reduces alkylation and ensures the substantial absence of ortho substitution. The monomer system can be, for example, a self-reacting monomer such as p-phenoxy-benzoyl chloride or a two-monomer system such as 1,4-diphenoxybenzene and terephthaloyl chloride.

Abstract: A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) from the reaction product of an alkali metal bisulfide with an alkali metal hydroxide, employing molar excess of alkali metal bisulfide with respect to the alkali metal hydroxide. A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) employing an alkali metal sulfide and an alkali metal hydrosulfide, wherein the alkali metal sulfide is added in a molar excess with respect to the alkali metal hydrosulfide.

Abstract: A process for producing an aromatic polyketone which comprises polymerizing an appropriate monomer or monomers by a Friedel-Crafts polymerization reaction using a Lewis acid catalyst. A controlling agent such as a Lewis base may be added to the reaction medium and/or the reaction is conducted under specified conditions to control the reaction. The reaction medium comprises, for example, aluminum trichloride as the Lewis acid, an organic Lewis base such as N,N-dimethylformamide or an inorganic Lewis base such as sodium or lithium chloride, and a diluent such as methylene chloride or dichloroethane. The amount of Lewis acid, the amount of Lewis base, the temperature of the reaction and the monomer to diluent molar ratio are varied depending on the monomer system to obtain melt-processable, high molecular weight, substantially linear polymers, for example poly(carbonyl-p-phenylene-oxy-p-phenylene), poly(carbonyl-p-phenylene-oxy-p-phenylene-oxy-p-phenylene), and the like.

Abstract: The preparation of poly(arylene ether ketones) by Friedel-Crafts polymerization, in the presence of a Lewis acid catalyst and a diluent, is conducted under conditions in which the polymer and/or its complex with the catalyst is suspended in the diluent during at least part of the polyreaction mixture if desired. The dispersant may be a polymer or an organic compound containing at least eight carbon atoms and is preferably a Lewis base. The dispersant preferably contains at least one molecular segment substantially compatible with the poly(arylene ether ketone) or its complex with the Lewis acid and substantially incompatible with the diluent and at least one molecular segment substantially compatible with the diluent and substantially incompatible with the poly(arylene ether ketone) or its complex with the Lewis acid.

Abstract: The invention provides a novel efficient method for the preparation of a polyarylene sulfide or, typically, polyphenylene sulfide by the reaction of an alkali metal sulfide, e.g. Na.sub.2 S, and a polyhalogenated aromatic compound, e.g. 1,4-dichlorobenzene. The improvement in the inventive method comprises performing the reaction in a heterogeneous reaction mixture comprising water and a polyethyleneglycol having a relatively high molecular weight, namely an average molecular weight of from 2,000 to 20,000, and not freely miscible with water. The product polymer is outstandingly free from salt impurities, e.g. sodium chloride, as a byproduct of the reaction. When a low molecular polyethyleneglycol is added to the reaction mixture in combination with the above mentioned high molecular polyethyleneglycol, a remarkable catalytic effect is obtained to accelerate the reaction and increase the yield of the desired polymer product.

Abstract: Methods of making modified polyimide adhesives and laminating compositions. These adhesives are also particularly useful as the matrix material in high strength fiber reinforced composites. The adhesive compositions are prepared by initially reacting an oxoimine with one or more tetracarboxylic acid dianhydrides, which is primarily 1, 2, 3, 4-butanetetracarboxylic acid dianhydride. The resulting bisimide is dissolved in a non-reactive solvent and a suitable diamine is added to react with the bisimide, producing a liquid resin solution which is essentially a polyamide resin solution. This solution is useful as an adhesive or a fiber composite matrix which can be cured to a polyimide at moderate processing temperatures. The final adhesive bond or matrix is found to be flexible, strong and very resistant to flame, high temperatures, oils and solvents.

Abstract: Aromatic polythioetheramide polymers having a repeating unit represented by the formulae as shown below and a process for the production thereof are described. These polymers have excellent moldability, flame retardance, heat resistance, and chemical resistance, and are suitable for use as engineering plastics: ##STR1## wherein all the symbols are the same as defined in the specification and claims.

Abstract: Methods of making water soluble polyimide resin compositions. A carboxy terminated bisimide is prepared by reacting a suitable aromatic dianhydride with a suitable oxoimine. The bisimide is then mixed with a sufficient quantity of a water soluble solvent to dissolve the bisimide. Water is added to make a solution of the desired viscosity. An aromatic diamine is added to this water solution. To the mixture is added a suitable quantity of a tertiary amine to stabilize the resin. The solution is coated onto a surface and dried to produce a smooth, flexible coating. The coating can then be heated to an appropriate temperature to produce a fully polymerized coating which is thermally stable and resistant to oils and solvents.

Abstract: An aromatic condensation polyimide film that is approximately 90% transparent at 500 nm, useful for thermal protective coatings and the like, and the processes for preparing same by thermal and chemical conversion are disclosed. An essential feature of the invention for achieving maximum optical transparency films requires utilizing recrystallized and/or sublimated specific aromatic diamines and dianhydride monomers and introducing phenoxy or thiophenyl separator groups and isomeric m,m'- or o,p'-oriented diamines into the polymer molecular structure. The incorporation of these groups in the polymer structure serves to separate the chromaphoric centers and reduce the formation of inter-chain and intra-chain charge transfer complexes which normally cause absorptions in the UV-visible range.

Abstract: A process for the preparation and recovery of m,m'-dinitrobenzophenone and which comprises reacting benzophenone with nitric acid in oleum; adjusting the reaction product to a water content from 12 to 30 weight percent; and extracting the m,m'-dinitrobenzophenone with a chlorinated hydrocarbon solvent.

Abstract: A novel ether solution of dinitrobenzophenone and a process for preparing an ether solution of diaminobenzophenone therefrom which comprises subjecting a dinitrobenzophenone dissolved in said ether solvent to hydrogenation in contact with a continuous nickel catalyst to obtain said solution of diaminobenzophenone dissolved in said ether solvent. In a specific embodiment said nickel catalyst is mounted on an inert support. In a still further embodiment, said diaminobenzophenone dissolved in said ether solvent, after removal of water therefrom, is reacted with an aromatic dianhydride to obtain a polyamic acid solution. The polyamic acid solution can be heated at a temperature above 100.degree. C. to drive off water of cyclization and thereby obtain the corresponding polyimide resin.

Abstract: Heat curable epoxy-styrene compositions exhibiting improved processability, low viscosity, long pot life, and fire retardancy which when cured with a special acid anhydride/onium salt epoxy curing blend in combination with a free-radical catalyst, yield cured products exhibiting improved physical properties, such as increased heat deflection temperature, increased flexural strength and increased flexibility.

Abstract: A process for the synthesis of the photosensitive polyamic acid derivatives which are polyimide precursors, comprising the sequential steps:(1) Partially derivatizing an aromatic dianhydride with a reactive monomer containing a photosensitive moiety;(2) Condensation polymerizing the partially derivatized aromatic dianhydride with aromatic diamine to form polyamic acid;(3) Isoimidization of the polyamic acid;(4) Condensation of the polyisoimide to polyamic acid derivative by reaction with additional reactive monomer; and(5) Separation of the polyamic acid derivative.

Abstract: A one-step solution technique for preparing an aromatic polyimide acid which comprises reacting an aromatic dianhydride with an aromatic diamine in the presence of propylene glycol methyl ether.

Abstract: Color improved polyarylates having a reduced viscosity of from about 0.1 to greater than 1.0 dl/gm produced by a process comprising the following steps:(a) reacting an acid anhydride derived from an acid containing from 2 to 8 carbon atoms with at least one dihydric phenol to form the corresponding diester; and(b) reacting said diester with at least one aromatic dicarboxylic acid at a temperature sufficient to form the polyarylate, wherein the improvement comprises carrying out said process in the presence of a particular solid adsorbent.

Abstract: Water-soluble polyesters useful in the preparation of bioerodible hydrogels are described. The polyesters are formed by condensing three monomers: a first monomer which is either an unsaturated aliphatic or cycloaliphatic dicarboxylic acid or an unsaturated aliphatic or cycloaliphatic diol; a second monomer which is a water-soluble polyglycol; and a third monomer which is a dicarboxylic acid having an electron-withdrawing group placed vicinally to a carbonyl group of the acid. Water-soluble polyesters with molecular weights ranging from about 5000 to about 30,000 are disclosed.

Abstract: A process for production of polyphenylene sulfide which comprises reacting an alkali metal sulfide compound with a polyhalogenated aromatic compound in an organic polar solvent in the presence of an oxyalkylene compound.

Abstract: A condensation polymer having a .eta.sp/C=0.1-1.5, containing an anthracene unit in the main chain of the polymer, which is found to have various functions of ultraviolet absorption, fluorescence emission, photoconductivity, organic semiconductor characteristics, etc. as well as excellent flexibility and mechanical strength, is prepared by condensation of an anthracenediol compound with a dicarboxylic acid dihalide or a hydrocarbylene dihalide.

Abstract: Modified polyimide adhesives useful for high efficiency bonding at moderate temperatures. Basically, the adhesives are prepared by reacting suitable quantities of an oxime, an aromatic tetracarboxylic acid dianhydride and an aliphatic tetracarboxylic acid dianhydride, esterifying the resulting bisimide with a reactive solvent esterifying agent and mixing therewith a suitable diamine. This copolyimide adhesive may be dried to a selected viscosity before or after coating onto one or both surfaces to be bonded together. When the surfaces are pressed together under moderate pressure and heated for a suitable period at a temperature in the range of about 230.degree. to 320.degree. C. an excellent, flexible bond is obtained, having high peel strength and excellent resistance to high temperatures.

Abstract: An improved process for preparing a polyarylate having a reduced viscosity of from about 0.1 to greater than 1.0 dl/gm comprising the following steps:(a) reacting an acid anhydride derived from an acid containing from 2 to 8 carbon atoms with at least one dihydric phenol to form the corresponding diester; and(b) reacting said diester with at least one aromatic dicarboxylic acid at a temperature sufficient to form the polyarylate, wherein the improvement comprises carrying out said process in the presence of a particular solid adsorbent.

Abstract: Novel polyimides, optionally end-capped with polymerizable or inert groups, and the polyamic acid or ester intermediates thereof are prepared by reacting a tetracarboxylic acid compound (e.g. pyromellitic dianhydride or 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride or its methyl diester) with diamines having the general formula ##STR1## wherein Z is oxygen or sulfur, X and/or Y are carbonyl or carbinol groups, the amine groups may be in the 2-, 3-, and/or 4-position, and isomerism is present when X and/or Y is a carbinol group. The polyimides may be end-capped by reaction, during or after their formation, with polymerizable groups such as 3-aminophenyl acetylene or 3,6-endomethylene-1,2,3,6-tetrahydrophthalic anhydride. The diamines are novel classes of amines when Z is sulfur and when Z is oxygen and X, Y, or X and Y are carbinol groups.

Abstract: A process for preparing a thermoplastic poly(imidesulfone) is disclosed. This resulting material has thermoplastic properties which are generally associated with polysulfones but not polyimides, and solvent resistance which is generally associated with polyimides but not polysulfones. This system is processable in the 250.degree.-350.degree. C. range for molding, adhesive and laminating applications. This unique thermoplastic poly(imidesulfone) is obtained by incorporating an aromatic sulfone moiety into the backbone of an aromatic linear polyimide by dissolving a quantity of a 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) in a solution of 3,3'-diaminodiphenylsulfone and bis(2-methoxyethyl)ether, precipitating the reactant product in water, filtering and drying the recovered poly(amide-acid sulfone) and converting it to the poly(imidesulfone) by heating.

Abstract: The present invention provides an improvement in a process for preparing carbon fiber reinforced polyimide compositions from a mixture of monomers by the application of heat in two stages. The improvement comprises incorporating a cyclic peroxyketal catalyst, such as 3,6,6,9,9,-pentamethyl-3-(ethylacetate)-1,2,4,5-tetraoxycyclononane, into the monomer mixture prior to reaction.

Abstract: Polymeric phenolic benzylic ether compositions are obtained by an intermolecular redox reaction thermolysis of tetraalkyldiphenoquinones at a minimum of about 150.degree. C. The compositions are useful as non-volatile oxidation inhibitors in polymers at high temperatures, as polymerization inhibitors for vinyl monomers, and as crosslinking co-monomers for epoxy and polycarbonate resins.

Abstract: Poly(phenylquinoxaline) prepolymers containing pendant phenylethynyl and ethynyl groups are disclosed along with the process for forming these polymers. Novel monomers and the process for producing same that are employed to prepare the novel polymers are also disclosed.

Abstract: Polyacetals and polyketals are prepared by reacting emulsified carbonyl compounds with emulsified polyfunctional alcohols in aqueous media and in the presence of specified polycondensation catalysts. Coherent films of the resultant polymers can be applied to substrates from aqueous or non-aqueous media.

Abstract: Described herein is a process for preparing polyarylates which comprises reacting a diester derivative of a dihydric phenol with an aromatic dicarboxylic acid in the presence of from about 10 to about 60 weight percent of at least one particular halogenated and/or etherated substituted aromatic or heteroaromatic compound, at a temperature of from about 260.degree. to about 350.degree. C.

Abstract: The present invention provides an improvement in a process for preparing polyimide compositions from a mixture of monomers by the application of heat in two stages. The improvement comprises incorporating a cyclic peroxyketal catalyst, such as 3,6,6,9,9,-pentamethyl-3-(ethylacetate)-1,2,4,5-tetraoxycyclononane, into the monomer mixture prior to reaction.

Abstract: A functionally terminated polybutadiene polymer is reacted with an epoxide to produce an epoxide terminated polybutadiene. A toughening agent and a peroxide free radical initiator are mixed with the epoxy terminated polybutadiene, and upon reaction a tough thermoset resin is produced having advanced chemical, electrical, and thermomechanical properties. Particular improvements are in the resistant-to-moisture and the tensile strain-to-failure properties.

Abstract: In the production of an aromatic polyester by reacting at least one aromatic diester of the formula ##STR1## wherein R is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 8 carbon atoms; andAr.sub.2 is an arylene group,with at least one aromatic dicarboxylic acid of the formula ##STR2## wherein Ar.sub.2 is an arylene group,in the presence of a catalyst, the improvement which comprises employing a transition metal salt of naphthenic acid as the catalyst.

Abstract: Described herein is a process for preparing crystalline polyarylates which comprises (a) forming a crystalline polyarylate prepolymer having a reduced viscosity of from 0.05 to about 0.4 dl/g by reacting at least one diester derivative of a dihydric phenol with at least one aromatic dicarboxylic acid in the presence of a solvent, at a temperature of from about 250.degree. to about 300.degree. C., and (b) heating the prepolymer so formed below its melting point to form a crystalline polyarylate having a reduced viscosity of from about 0.45 to about 1.2 dl/g.

Abstract: Synthetic polymers containing at least one cyclobutanone group of the formula ##STR1## wherein R.sup.1 to R.sup.4 are selected from the class consisting of alkyl, aryl, halogen, and hydrogen radicals are prepared by reacting in an inert organic solvent a conjugated diene polymer having unsaturated bonds in the main or side chain with a ketone of the formula ##STR2## Such polymers are useful as adhesives and flexibilizers, and they can be readily cross-linked to form elastomeric coatings with good solvent resistance.

Abstract: A process for producing layered organometallic polymers having organo groups covalently bonded to pentavalent metal atoms. The pentavalent metal atoms are, in turn, covalently bonded through an oxygen linkage to tetravalent metal atoms. The layered organometallic compounds are produced by reacting a silyl diester of an organo-substituted pentavalent metal acid with at least one tetravalent metal ion.

Abstract: Compounds having the formula: ##STR1## where X is F or Cl, a process for the preparation of such compounds, addition copolymers of such compounds with other ethylenically unsaturated monomers, the process of preparation of such copolymers, and derivatives of such copolymers obtained by reaction of the acid halide groups and other compounds.

Abstract: Described herein is a process for preparing polyarylates which comprises reacting a diester derivative of a dihydric phenol with an aromatic dicarboxylic acid in the presence of from about 10 to about 60 weight percent of a diphenyl ether compound at a temperature of from about 260.degree. to about 350.degree. C. and in the presence of a magnesium catalyst.

Abstract: Described herein is a process for preparing polyarylates which comprises reacting a diester derivative of a dihydric phenol with an aromatic dicarboxylic acid in the presence of from about 10 to about 60 weight percent of a diphenyl ether compound at a temperature of from about 260.degree. to about 350.degree. C.

Abstract: Described herein is a process for preparing polyarylates of improved color which comprises reacting a diester derivative of a dihydric phenol with an aromatic dicarboxylic acid in the presence of from about 10 to about 60 weight percent of at least one cycloaliphatic, substituted aromatic or heteroaromatic compound, which compounds contain at least one benzylic and/or tertiary hydrogen atom, at a temperature of from about 260.degree. to about 350.degree. C. Optionally, the process may be carried out in the presence of a magnesium, manganese, or zinc catalyst.

Abstract: An improvement of addition polyimides wherein an essentially solventless, high viscosity laminating resin is synthesized from low-cost liquid monomers. The improved process takes advantage of a reactive, liquid plasticizer such as monoethylphthalate (MEP) which is used in lieu of an alcohol solvent, and helps solve a major problem of maintaining good prepreg tack and drape, or the ability of the prepreg to adhere to adjacent plies and conform to a desired shape during the layup process. This improvement results in both longer life of the polymer prepreg and the processing of low-void laminates and appears to be applicable to all addition polyimide systems.

Abstract: Crosslinked acrylate-acetoacetamide polymers are disclosed. These polymers are prepared by the reaction of at least one polyfunctional acrylate with at least one diacetoacetamide in the presence of a catalyst capable of promoting the reaction between the polyfunctional acrylate and the diacetoacetamide. In a preferred embodiment, the polymers are employed to produce wear layer compositions for surface coverings.

Abstract: A polymer of the general formula: R'--M--Ar--B--Ar'--MArBAr'--.sub.k-2 M--Ar--B--Ar'--R wherein M and D, which can be the same or different, are independently ##STR1## wherein each Ar is independentlyR'--M--Ar--D--Ar'[--MArDAr'--].sub.k-2 M--Ar--D--Ar'--R"wherein L is ##STR2## phenyleneoxy, ##STR3## a covalent bond or T, wherein T is as defined belowand each Ar' is independently ##STR4## wherein T is O, S, phenyleneoxy, or --CR.sub.2 -- wherein R is as defined below, or --O--Ar--O-- wherein Ar can have any of the values set forth above and wherein R' and R" are independently ##STR5## wherein X is a covalent bond, --O--, --S--, or --CR.sub.2 -- wherein each R is independently hydrogen, an alkyl or fluoroalkyl group, preferably of 1 to 10 carbons, phenyl or an electron withdrawing group substituted phenyl, Y is CN, NO.sub.2, ##STR6## or if X is a covalent bond, Y can be hydrogen as well as any of the foregoing; or Ar"CO-- or Ar"SO.sub.

Abstract: The molecular weight of highly aromatic polymers made by the Friedel-Crafts polymerization of EN monomers of the formula Ar--L--Ar.sup.1 --X, wherein X is selected from SO.sub.2 Y or COY, Y being a radical selected from --OH, halogen, or alkyl, wherein Ar and Ar.sup.1 are independently ##STR1## wherein L is --CO--, --SO.sub.2 --, phenyleneoxy, --NHCO--, a covalent bond, --O--, or --CR.sub.2 --, wherein each R is independently hydrogen, an alkyl or fluoroalkyl group, phenyl or a phenyl group substituted by an electron withdrawing group such as halogen, NO.sub.2 or --CN, is controlled by including in the reaction mixture an acylatable aromatic compound whose rate of acylation under Friedel-Crafts conditions is at least about 150 times that of benzene. The molecular weight of other polymers made from EN type monomers by Friedel-Crafts catalysis can also be controlled in this way.