Abstract: Linear polyether resins containing 100 to 1 mol % of the repeating structural unit of formula I ##STR1## and 99 to 0 mol % of the repeating structural unit of formula II ##STR2## wherin A is a linear unsubstituted or methyl-substituted alkylene group containing 1 to 100 carbon atoms in the linear alkylene chain, X denotes bridging groups as defined in claim 1, and Y is an aromatic radical of a divalent phenol as defined in claim 1, are thermoplastics with high glass transition temperatures and excellent mechanical strength properties.

Abstract: Polyfluoroalkoxyphosphazenes cured through eugenoxy groups result in elastomer compositions having higher modulus, tensile strength and elongation retention and lower compression set compared to a similar polyfluoroalkoxyphosphazene cured through conventional ortho-allylphenoxy groups.

Abstract: This invention relates to a process for producing phosphonitrile oligomers containing maleimido phenoxy groups.

Abstract: Polyfluoroalkoxyphosphazenes cured through eugenoxy groups result in elastomer compositions having higher modulus, tensile strength and elongation retention and lower compression set compared to a similar polyfluoroalkoxyphosphazene cured through conventional ortho-allylphenoxy groups.

Abstract: Photosensitive iodonium polymers are provided useful as positive photoresists. The iodonium polymers can be converted to polymeric diaryl iodonium polyfluorometal and metalloid salts by a metathesis reaction. These polymeric iodonium polyfluorometal and metalloid salts can be used as a catalyst in combination with a copper compound cocatalyst to make heat curable compositions with cationically polymerizable materials such as an epoxy resin.

Abstract: The invention relates to oligomeric and polymeric esters of difunctional polyphenylene ethers and phosphinic acids, phosphonic acids and phosphoric acid and to their use as a flame-retarding mixing component for other plastics.

Abstract: Thermoplastic polyphosphonatocarbonate prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a basic polycondensation catalyst at a temperature of from 80.degree. to 340.degree. C. and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonate and phosphonic acid diaryl ester being from 0.91:1 to 0.99:1, and following polycondensation, neutralizing said basic catalyst.

Abstract: Polyester-phosphonates, polycarbonatophosphonates and polyester-carbonatophosphonates having improved impact strength and notched impact strength as compared with melt-condensation products can be prepared in such a way that, in the first stage, oligophosphonates with hydroxyl end groups are prepared by melt-transesterification and melt-condensation and these are subjected in a second stage to a phase boundary process.

Abstract: A method for making resinous phosphorus-containing polyarylene ethers of the structure ##STR1## wherein R taken alone is hydrogen or R R taken together are a covalent single bond, oxygen, sulfur, or a sulfonyl, carbonyl, methylene or isopropylidene bridge;R' is alkyl or aryl;R" is a single bond, oxygen, sulfur, or an organic group having from 5 to 15 carbon atoms whose free valences emanate from quaternary carbon atoms;E is an end group which is chlorine, hydrogen, alkyl, aryl, or acyl; andn has an average value of at least 10,by polycondensing appropriate bis(chlorophenyl)phosphine oxides with appropriate bisphenols at an elevated temperature in the presence of alkali in reaction times of at least 10 hours, and certain resinous ethers produced by this method.

Abstract: Polycarbonate compositions are formed by reaction of aromatic trihydroxy phosphorus compounds to induce random-chain branching.

Abstract: Method for recovering an aromatic polyether as a solid product from a solution thereof in an organic solvent by precipitating with a fluorohydrocarbon which may also contain chlorine or bromine and which boils at -30.degree. C. to +100.degree. C.

Abstract: Polyphosphazene homopolymers and copolymers containing repetitive units represented by the general formula: ##STR1## in which the substituents X, which can be equal or different, are represented by the following formulas: ##STR2## where R is hydrogen or a C.sub.1 -C.sub.5 alkyl group or an aryl or heterocyclic group, with or without substituents, R' is CH.sub.2 or an aryl or heterocyclic group, with or without substituents, n is zero or a whole number variable from 1 to 5 and Y is hydrogen or a halogen or a methyl, nitroso or nitro group; the substituents X.sup.1 are groups equal to X or halogen, or alkoxy, aryloxy, amino or mercapto groups, either substituted or unsubstituted, or a mixture thereof; the sum (w+y+z) has a value varying from 20 to 50,000.The polymers of the present invention are prepared from the corresponding poly(dichlorophosphazenes) of general formula (NPCl.sub.2).sub.m in which m can vary from 20 to 50,000, and can be used as photoconductor materials and for other uses.

Abstract: The production of oxybenzoyl polyesters is facilitated by the incorporation of a phosphite, particularly an organic phosphite, during the production enabling the production of molded articles from these polyesters of improved appearance and excellent properties.

Abstract: Novel phosphorus-containing polyglycidyl ethers capable of forming a cured epoxy resin having a high flame retardancy and excellent in heat resistance characteristics such as heat deterioration resistance, glass transition temperature, thermal deformation temperature and the like; a process for producing said phosphorus-containing polyglycidyl ethers; phosphorus-containing polyphenol compounds used in production of said phosphorus-containing polyglycidyl ethers; and a process for producing said phosphorus-containing polyphenol compounds.

Abstract: This invention claims flame retardant polycarbonate resin compositions comprising an aromatic carbonate polymer and, as a novel flame retardant additive therefor, a phosphorus-containing polycarbonate composition produced by carrying out a polycarbonate condensation in which at least part of the diol compound is a bishydroxyalkylphosphine oxide. Also described are the novel flame retardants per se.

Abstract: Phosphonitrilic chloride polymers are substituted with aryloxide or alkoxide groups by reaction with an alkali metal aryloxide or alkoxide in a single liquid hydrocarbon reaction medium, e.g. cyclohexane, toluene and the like, in which the aryloxides or alkoxides are essentially insoluble and in which the substituted product is soluble.

Abstract: Thermoplastic polyphosphonatocarbonates prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a catalyst selected from the group consisting of (a) tetra-C.sub.1 -C.sub.18 -alkyl titanates, (b) di-C.sub.2 -C.sub.4 -alkyl-tin oxides, (c) di-C.sub.2 -C.sub.4 -alkyl-di-C.sub.1 -C.sub.4 -alkoxy-tin compounds, (d) tetra-C.sub.3 -C.sub.18 -alkyl zirconates, (e) tri-C.sub.2 -C.sub.18 -alkyl vanadylates and (f) mixtures of germanium dioxide or titanium dioxide and at least one of (a) to (e) in a weight ratio of 1:3 to 3:1 at a temperature of from 80.degree.-340.degree. C. and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonates and phosphonic diaryl ester being from 0.91:1 to 0.99:1.

Abstract: Difficultly flammable polyarylene ether resins containing phosphorus having the structure ##STR1## and methods for making the same.

Abstract: This invention relates to a process for the production of branched polyphosphates.

Abstract: This invention relates to new polyphosphates, and to the production and use thereof.

Abstract: The subject of the present invention is a process for the preparation of polyphosphonates containing carbonate structures in amounts of 0.3 to 4.5 mol %, relative to the sum of phosphonate and carbonate structural units, which is characterized in that diaryl phosphonates are reacted with diphenols in the presence of neutral transesterification catalysts, and the reaction is then completed by adding diaryl carbonate.

Abstract: Phosphorus-modified polyestercarbonate resins having repeating units of the formula: ##STR1## exhibit improved thermal-oxidative stability compared to polyestercarbonates of the prior art comprised of repeating units I and II only. Such resins are useful for making transparent tough films and molded articles having high stability to thermal-oxidative degradation.

Abstract: What are disclosed are resinous polyarylene esters containing more than 1 percent by weight of phosphorus and having the formula--CO--A--CO--O--B--O.sub.n, wherein B is a bivalent aromatic group and A represents at least in part--phenylene--P(O).sub.x (R)--phenylene--,wherein R is lower alkyl or aryl and x is 0 or 1, the rest, if any, of A having the formula given for B, which esters have decomposition temperatures of at least 450.degree. C. and can be sintered or thermoplastically processed into sheets or other shapes having good self-extinguishing properties.

Abstract: What are disclosed are phosphorus-containing polyarylene esters,--O--A--O--CO--B--CO].sub.n,wherein A represents at least in part groups of the structure ##STR1## wherein x is 0 or 1 and R is aromatic or aliphatic, and wherein B represents either two different aromatic groups or at least one group with the structure --C.sub.6 H.sub.4 --R'--C.sub.6 H.sub.4 --, wherein R' is a bridging link of the group --O--, --S--, --SO.sub.2 --, --CO--, or isopropylidene, and wherein n is greater than 20, which esters have a phosphorus content of over 1 weight percent, are distinguished by improved thermoplastic processability, and are prepared by condensation of HO--A--OH, for example with ClCO--B--COCl in the presence of a base.

Abstract: Carbonate polymers having increased thermal stability are prepared by incorporating into the polymer chain an oligomer having the formula ##STR1## wherein R is the divalent residue of a dihydric phenol or a dihydric polynuclear phenol,R.sub.1 is an alkyl, aralkyl or alkaryl group having 1 to 25 carbons, and n is a number having an average value of 1-200.

Abstract: A carboxylated phosphazene polymer, comprising a phosphazene polymer backbone covalently coupled to a carboxylate-containing compound through a divalent organic radical attached at one end to the carboxylate by an amide bond formed at a primary aliphatic amino group of the radical and at the other end to a phosphorous of the phosphazene backbone.

Abstract: Phosphonopolyester oligomers are prepared from hydroxyalkylated 2,2',-bis(3-allylphenyl-4-hydroxy) alkanes and phosphonyl dihalides. The oligomers are useful in the preparation of polyester resins, epoxy resins, and polyurethanes.

Abstract: Thermoplastic, branched aromatic polyphosphonates with average molecular weights (number average M.sub.n) of from 11,000 to more than 200,000, obtainable by transesterifying (a) from 97 to 100 moles of at least one diaryl phosphonate, and (b) from 0 to 3 moles of at least one triaryl phosphate--the sum of the moles of (a) and (b) being 100--with (c) from 90 to 99 moles of at least one aromatic dihydroxy compound, and (d) from 0 to 3 moles of at least one aromatic trihydroxy or tetradhydroxy compound--with the proviso that at least one of the components (b) and (d) is present in a quantity of at least 0.001 mole and that, where (b) and (d) are used, the maximum limit on the moles is 3.0.

Abstract: Aromatic, phenol-free polyphosphites containing at least two pentaerythritol residues and three bis-phenolic residues. They are effective polymer additives and are especially useful in enhancing the thermal stability of polypropylene.

Abstract: A process for manufacturing an aromatic polyester by reacting an aromatic dicarboxylic acid dichloride with an alkali metal salt of a bisphenol comprises adding 0.01 to 100 mol %, based on the total monomer quantity, of an acid halide into the reaction system.

Abstract: Polymer-bound dyes have been prepared by the diazotization of high polymeric [NP(OC.sub.6 H.sub.5).sub.x - (OC.sub.6 H.sub.4 NH.sub.2 -p).sub.y ]n, followed by coupling to phenol, .beta.-naphthol, 6'-NaO.sub.3 S-.beta.-naphthol, and p-aminophenylnaphthalene. These reactions were preceded by model compound studies with the cyclic trimer [NP(OC.sub.6 H.sub.4 NH.sub.2 -p-).sub.2 ].sub.3. In both cases, the aminophenoxy units were generated by reduction of 4-nitrophenoxy groups with the use of PtO.sub.2 and hydrogen. The phosphazene skeleton was unaffected by the reduction, diazotization, and diazo coupling processes. The physical characteristics of the trimers and high polymers are described.

Abstract: Phosphonopolyester oligomers are prepared from hydroxyalkylated 2,2',-bis(3-allylphenyl-4-hydroxy) alkanes and phosphonyl dihalides. The oligomers are useful in the preparation of polyester resins, epoxy resins, and polyurethanes.

Abstract: Phosphonopolyester oligomers are prepared from hydroxyalkylated 2,2',-bis(3-allylphenyl-4-hydroxy) alkanes and phosphonyl dihalides. The oligomers are useful in the preparation of polyester resins, epoxy resins, and polyurethanes.

Abstract: Thermoplastic polyphosphonatocarbonates prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a catalyst selected from the group consisting of (a) tetra-C.sub.1 -C.sub.18 -alkyl titanates, (b) di-C.sub.2 -C.sub.4 -alkyl-tin oxides, (c) di-C.sub.2 -C.sub.4 -alkyl-di-C.sub.1 -C.sub.4 -alkoxy-tin compounds, (d) tetra-C.sub.3 -C.sub.18 -alkyl zirconates, (e) tri-C.sub.2 -C.sub.18 -alkyl vanadylates and (f) mixtures of germanium dioxide or titanium dioxide and at least one of (a) to (e) in a weight ratio of 1:3 to 3:1 at a temperature of from 80.degree.-340.degree. C. and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonates and phosphonic diaryl ester being from 0.91:1 to 0.99:1.

Abstract: Synthesis of new (lithiophenoxy)phosphazene high polymers is described whin polymers such as poly(dichlorophosphazene) are used as the starting material to prepare poly(organophosphazenes) by reaction thereof with sodium para-bromophenoxide. Poly(organophophazenes) thus obtained are used in a metal-halogen exchange reaction with n-butyllithium. The lithio derivatives thus obtained are used as reactive intermediates for the synthesis of polymers of formulas [NP(OC.sub.6 H.sub.4 X-p).sub.x (OC.sub.6 H.sub.4 Br)y].sub.n and [NP(OC.sub.6 H.sub.4 Li-p).sub.x (OPh).sub.y ].sub.n, where X is PPh.sub.2, PPh.sub.2 C.sub.4 H.sub.9.sup.+ Br.sup.-, SnPh.sub.3, AuPPh.sub.3, or COOH.

Abstract: A process for preparing polyphosphazene polymers containing fluoroalkoxy and/or aryloxy substituents is provided. The process involves the reaction of a fluoroaliphatic alcohol or a substituted or unsubstituted aromatic alcohol or mixture of such alcohols with sodium hydroxide in an organic solvent or mixture of organic solvents which under appropriate conditions will form an azeotrope with water produced by the reaction. Water produced by the reaction is removed from the reaction mixture by azeotropic distillation thereby producing substantially dry sodium salts of said alcohols. The substantially dry sodium salts of the alcohols are then reacted with a linear polydichlorophosphazene polymer to produce polyphosphazene polymers containing fluoroalkoxy and/or aryloxy substituents.

Abstract: Thermoplastic polyphosphonatocarbonate prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a basic polycondensation catalyst at a temperature of from 80.degree. to 340.degree. and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonate and phosphonic acid diaryl ester being from 0.91:1 to 0.99:1, and following polycondensation, neutralizing said basic catalyst.

Abstract: The present invention provides new linear phosphorus- and halogen-containing flame retardant polyester additives for normally flammable polymers and coatings for normally flammable natural and synthetic films and fibers, for instance, polyester and cellulose ester films and fibers. The phosphorus- and halogen-containing polymers of the invention are water dispersible or can be rendered water-soluble. They can be prepared by reacting a phosphorus acid reactant such as phosphoric acid with at least one halogenated difunctional monomer. The water-soluble polyesters can be cross-linked to render them insoluble in water by heating together with a methylol compound.Said halogenated monomer is preferably an oxyalkylated diacid or diol and said halogen is attached either on one or more aromatic rings or on a cycloaliphatic ring.

Abstract: The present invention provides new linear phosphorus- and halogen-containing flame retardant polyester additives for normally flammable polymers and coatings for normally flammable natural and synthetic films and fibers, for instance, polyester and cellulose ester films and fibers. The phosphorus- and halogen-containing polymers of the invention are water dispersible or can be rendered water-soluble. They can be prepared by reacting a phosphorus acid reactant such as phosphoric acid with at least one halogenated difunctional monomer. The water-soluble polyesters can be cross-linked to render them insoluble in water by heating together with a methylol compound.Said halogenated monomer is preferably an oxyalkylated diacid or diol and said halogen is attached either on one or more aromatic rings or on a cycloaliphatic ring.

Abstract: Novel imido copolymers, useful for the production of a variety of shaped articles, e.g., by molding, are prepared by reacting an oligoimide with an aromatic compound bearing labile hydrogen atom(s) on the nucleus thereof, or by co-reacting such oligoimide and aromatic compound with a polyamine.

Abstract: The invention relates to a linear aromatic polyester of enhanced hydrolytic stability comprising bisphenol and dicarboxylic acid monomer residues which contains carboxylate ester end groups derived from a fluoro aliphatic alcohol of 1 to 45 carbon atoms. The invention also includes the process of preparing the polyester.

Abstract: There are described linear aromatic polyesters of a bisphenol and a dicarboxylic acid having terminal carboxylate ester substituents of an aliphatic monofunctional alcohol of 8 to 45 carbons. The polyesters have enhanced hydrolytic stability compared to conventional polyesters of bisphenol and a dicarboxylic acid. Low molecular weight polyesters of the invention have improved stability on processing compared to comparable conventional polyesters of a bisphenol and a dicarboxylic acid. Processes for preparing the polyesters are also disclosed.

Abstract: The present invention provides new linear phosphorus- and halogen-containing flame retardant polyester additives for normally flammable polymers and coatings for normally flammable natural and synthetic films and fibers, for instance, polyester and cellulose ester films and fibers. The phosphorus- and halogen-containing polymers of the invention are water dispersible or can be rendered water-soluble. They can be prepared by reacting a phosphorus acid reactant such as phosphoric acid with at least one halogenated difunctional monomer. The water-soluble polyesters can be cross-linked to render them insoluble in water by heating together with a methylol compound.Said halogenated monomer is preferably an oxyalkylated diacid or diol and said halogen is attached either on one or more aromatic rings or on a cycloaliphatic ring.

Abstract: An improved transesterification process for preparation of a linear aromatic polyester comprising bisphenol and dicarboxylic acid monomer units terminated with a carboxylic acid ester groups derived from a long chain aliphatic monofunctional alcohol comprises as the improvement partially transesterifying a diaryl ester of the dicarboxylic acid with the alcohol prior to carrying out the transesterification polymerization reaction of said aryl ester and the bisphenol.

Abstract: A process for the preparation of aromatic polyesters which are characterized particularly by high-temperature stability and difficult inflammability and which show, in addition, a low development of heat and a high char yield in combustion.

Abstract: High molecular weight, thermally stable polyarylates are prepared directly from dihydric phenols, aromatic dibasic acids and a chlorinating agent without isolating an acyl halide intermediate. An organic phosphite can be added to reduce color formation.

Abstract: Improved copoly(carbonate/phosphonate) compositions formed by reaction of a dihydric phenol, a carbonate precursor, and an organophosphorus dihalide are disclosed. The inherent viscosity and melting point of such compositions is increased by the presence of an effective amount of a chain branching agent, optionally in the additional presence of a chain terminating agent.

Abstract: Flame-resistant copolyesters are disclosed consisting or consisting essentially of from 85 to 99.5% of repeating units of the formula --CO--R--CO--O--R.sub.1 --O-- in which R is a divalent aromatic radical and R.sub.1 is a divalent aliphatic, cycloalkane radical or a mixture of two or several of these radicals; and least 0.5% of units of the formula: ##STR1## in which Me represents a metal such as Na, K, Ca or Zn, and Z represents a paraphenylene group or a divalent aliphatic grouping which contains from 1 to 18 carbon atoms, and may comprise heteroatoms, and is optionally branched, the branch being an aliphatic radical which may be halogenated, and comprises from 1 to 6 carbon atoms; and from 0 to 14.5% of units produced from a brominated compound of the formula: ##STR2## in which R.sub.5 is zero or represents a grouping: ##STR3## and A and A' represent either --CO--OX groups, where X=H or a lower alkyl group, or --X'OH groups, where X'=a--OCH.sub.2 --CH.sub.2 --.sub.n group, and n=1 to 10.

Abstract: The present invention relates to copolyesters having high flame resistance, and comprising essentially 85% to 99.5% of repeating units of the formula --CO--R--CO--O--R.sub.1 --O--, in which R is an aromatic radical, and R.sub.1 is a divalent aliphatic, cycloaliphatic or cyclanic radical, or a mixture of two or more of these radicals;at least 0.5% of units of the formula: ##STR1## in which R' is a lower alkyl group, and R" is an aliphatic, aromatic or arylaliphatic radical;and 0 to 14.5% of units produced from a compound of the formula: ##STR2## in which R.sub.2 is zero or represents an ##STR3## --CH.sub.2 -- or --O-- group, and A and A' represent either --CO--OX groups, in which X.dbd.H or a lower alkyl group, or --X'0H groups in which X'.dbd.a --(OCH.sub.2 --CH.sub.2 -- group and n=1 to 10.These copolyesters may be used advantageously for producing textile yarns and fibers, films, and molded or extruded articles.

Abstract: The present invention provides a melt processable composition and process for preparing the same from a blend of a normally non-melt processable wholly aromatic polyester and a phosphorus ester. The presence of the specifically defined phosphorus ester in the composition in amounts of up to about 40 percent by weight renders the normally non-melt processable wholly aromatic polyester melt processable.