Abstract: Biodegradable terephthalate polymers are described comprising the recurring monomeric units shown in formula I: 1

Abstract: Provided is a high heat-resistant polymeric fluorescent substance having a divalent condensed polycyclic aromatic group of specific size having a bonding part at specific position shows fluorescence at a long wave length from orange to red, which is useful for fabricating an organic EL device having excellent properties by a coating method.

Abstract: The present invention relates to a molecular weight-enlarged, homogeneously soluble ligand, which includes:

Abstract: High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.

Abstract: The present invention relates to golf equipment, such as golf shoes, golf clubs, golf gloves, or portions thereof, formed from compositions comprising a sulfonated, carboxylated, or phosphonated acid moieties, or a mixture thereof. The preferred ionomer composition comprises sulfonated thermoplastic elastomers, sulfonated thermoplastic polymers, sulfonated thermoset polymers, and mixtures thereof. The compositions include a blend of about 1 weight % to about 99 weight % of at least one sulfonated, carboxylated, or phosphonated ionomer and about 99 weight % to about 1 weight % of at least co-component polymer. The co-component polymer may be a conventional ionomer, a thermoplastic, a thermoplastic elastomer, a thermoset polymer, or mixtures thereof.

Abstract: Biodegradable polymers are described comprising the recurring monomeric units shown in formula I or II: wherein X is —O— or —NR′—, where R′ is H or alkyl; L is a branched or straight chain aliphatic group having from 1-20 carbon atoms; M1 and M2 are each independently (1) a branched or straight chain aliphatic group having from 1-20 carbon atoms; or (2) a branched or straight chain, oxy-, carboxy- or amino-aliphatic group having from 1-20 carbon atoms; Y is —O—, —S— or —NR′—, where R′ is H or alkyl; R is H, alkyl, alkoxy, aryl, aryloxy, heterocyclic or heterocycloxy; the molar ratio of x:y is about 1; the molar ratio n:(x or y) is between about 200:1 and 1:200; and the molar ratio q:r is between about 1:99 and 99:1; wherein said biodegradable polymer is biocompatible before and upon biodegradat.

Abstract: The present invention provides biodegradable polymers, polymer compositions, particles composed thereof and methods of using same for the controlled release of a biologically active substance to a specified tissue or cells. Preferred polymers include biodegradable, amphiphilic polyphosphates which are capable of complexing one or more biologically active substances. Preferred methods include the controlled release of biologically active substances and gene therapy using polymers and nanoparticles composed thereof.

Abstract: Linear backbone phosphorus-boron polymers of the general formula (I): wherein R1, R2, R3, and R4, are the same or different and selected from H, optionally substituted alkyl, alkenyl and phenyl; and n is at least 2, and particularly high molecular weight polymers of absolute weight average molecular weight of at least 10,000. The polymers are of use as fire retardants.

Abstract: New compositions, metal-ligand complexes and arrays are disclosed that catalyze the polymerization of monomers into polymers.

Abstract: The present invention provides improved processes for purifying polymer preparations by removing contaminants, such as metal contaminants. The present invention also provides improved processes for producing phosphopolymers, which can yield improved polymers in terms of molecular weight, homogeneity, consistency and purity. Polymers and polymer preparations also are provided. The present invention is time, labor and energy efficient, and thus marks an improvement over past approaches.

Abstract: A polymeric composition, a process for producing the composition, and a process for using the composition in, for example, hydrocyanation or isomerization are disclosed. The composition comprises repeat units derived from (1) a carbonyl compound, a monomer, and phosphorochloridite; (2) phosphorus trichloride, a polyhydric alcohol, and an aromatic diol; or (3) combinations of (1) and (2) in which the monomer can be a polyhydric alcohol, an amine, combinations thereof. The composition can further comprise a Group VIII metal and optionally a Lewis acid.

Abstract: Biodegradable terephthalate polymers are described comprising the recurring monomeric units shown in formula I: wherein R is a divalent organic moiety; R′ is an aliphatic, aromatic or heterocyclic residue; x is ≧1; and n is 0-5,000, wherein the biodegradable polymer is biocompatible before and upon biodegradation. Processes for preparing the polymers, compositions containing the polymers and biologically active substances, articles useful for implantation or injection into the body fabricated from the compositions, and methods for controllably releasing biologically active substances using the polymers, are also described.

Abstract: Ordered poly(arylene-vinylene)terpolymers, process for their preparation and their use as electroluminescence materials Poly(arylene-vinylene) terpolymers comprising repeating units of the formula (I), where the symbols have the following meanings: Ar1, Ar2, Ar3 are identical or different and are monocyclic or polycyclic, substituted or unsubstituted aryl or heteroaryl groups which may be linked via one or more bridges or be fused, R1, R2, R3, R4, R5, R6, R7, R8 are identical or different and are each H or a hydrocarbon radical having from 1 to 22 carbon atoms which may be substituted, preferably by F, and may also contain heteroatoms, preferably O, are suitable as electroluminescence materials.

Abstract: Poly(paraphenylenevinylene) derivatives and their use as electroluminescence materials

Abstract: Use in the treatment of ceramic materials for obtaining an easy stain removal, of mono- and bifunctional (per)fluoropolyether derivatives having the following structures:

Abstract: High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.

Abstract: A polymeric composition, a process for producing the composition, and a process for using the composition in, for example, hydrocyanation or isomerization are disclosed. The composition comprises repeat units derived from (1) a carbonyl compound, a monomer, and phosphorochloridite; (2) phosphorus trichloride, a polyhydric alcohol, and an aromatic diol; or (3) combinations of (1) and (2) in which the monomer can be a polyhydric alcohol, an amine, combinations thereof. The composition can further comprise a Group VIII metal and optionally a Lewis acid.

Abstract: The invention pertains to an adduct comprising epoxy groups obtainable by condensation of an epoxy compound and at least a monocyclic phosphite according to Formula 1: wherein R1 and R2 may be the same or different and represent H or C1-4 alkyl and m is 1, optionally, in admixture with a bicyclic phosphite according to Formula 1 wherein R1 and R2 are absent, m is 2, and wherein R3-R6 may be the same or different and represent H or C1-4 alkyl.

Abstract: The invention relates to novel crosslinkable, photoactive silane derivatives of the formula I mixtures of silane derivatives of the formula I and mixtures of silane derivatives of the formula I with uncrosslinkable silane derivatives as usually used for silanizing inorganic, oxide-containing surfaces. The invention furthermore relates to the use of silane derivatives of the formula I and of mixtures which contain at least one silane derivative of the formula I as orientation layers for liquid crystals and for the production of unstructured or structured optical elements and multilayer systems.

Abstract: Disclosed is a composition which comprises a polymer containing at least some monomer repeat units with water-solubility- or water-dispersability-imparting substituents and at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer being of the formula wherein x is an integer of 0 or 1, A is one of several specified groups, such as B is one of several specified groups, such as or mixtures thereof, and n is an integer representing the number of repeating monomer units. In one embodiment, a single functional group imparts both photosensitivity and water solubility or dispersability to the polymer. In another embodiment, a first functional group imparts photosensitivity to the polymer and a second functional group imparts water solubility or dispersability to the polymer.

Abstract: The invention relates to a process for the polymerization or copolymerization of at least one monomer which is polymerizable by the radical route in the presence of a stable free radical from the nitroxide family. The stable free radical is &bgr;-substituted and provides excellent control of polydispersity while ensuring a better rate of polymerization or copolymerization, if they are compared with the stable free radicals used in the prior art.

Abstract: Salt of a 1,3,5-triazine compound with polyphosphoric acid with a virtually linear structure, with the number average degree of condensation n being higher than 20, the content of the 1,3,5-triazine compound being higher than 1.1 mole per mole of phosphorus atom and the pH of a 10% slurry in water being higher than 4.5. Further, a process for the preparation of the polyphosphate salt of a 1,3,5-triazine compound with a number average degree of condensation n that is higher than 20, by converting a 1,3,5-triazine compound with orthophosphoric acid at room temperature into the phosphate of the 1,3,5-triazine compound, after which this salt is converted at elevated temperature into a polyphosphate of the 1,3,5-triazine compound, and further flame retardant polymer compositions comprising the polyphosphate salt of a 1,3,5-triazine compound with a number average degree of condensation n higher than 20.

Abstract: The present invention relates to polymers comprising one or more perfluoroalkylpolyether units and one or more different charged units, to a process for producing such polymers in non-porous or particularly in porous form and to mouldings composed thereof. The novel polymers have an improved wettability and cell growth ability and are thus useful, for example, for the manufacture of biomedical devices, in particular opthalmic devices.

Abstract: Biodegradable polymers are described comprising the recurring monomeric units shown in formula I or II: wherein X is --O-- or --NR'--, where R' is H or alkyl; L is a branched or straight chain aliphatic group having from 1-20 carbon atoms; M.sub.1 and M.sub.2 are each independently (1) a branched or straight chain aliphatic group having from 1-20 carbon atoms; or (2) a branched or straight chain, oxy-, carboxy- or amino-aliphatic group having from 1-20 carbon atoms; Y is --O--, --S-- or --NR'--, where R' is H or alkyl; R is H, alkyl, alkoxy, aryl, aryloxy, heterocyclic or heterocycloxy; the molar ratio of x:y is about 1; the molar ratio n:(x or y) is between about 200:1 and 1:200; and the molar ratio q:r is between about 1:99 and 99:1; wherein said biodegradable polymer is biocompatible before and upon biodegradat.

Abstract: A polymer composition including phosphorus substituents which comprises:(a) a phosphono-substituted carboxylic acid or an ester of such acid; and(b) a mono- or polyfunctional entity polymerizable with (a).Substances suitable for use as (a) are aliphatic or aromatic phosphono substituted dicarboxylic acids or esters thereof.Substances suitable for use as (b) are polyhydric alcohols, aliphatic mononuclear or polynuclear aromatic polycarboxylic acids or esters or anhydrides thereof. Also suitable for use as (b) are aliphatic or aromatic polyamines and aliphatic or aromatic polyisocyanates or polyepoxides.

Abstract: Flame-retardant thermoplastic molding compositions compriseA) from 5 to 99% by weight of a thermoplastic polymer,B) from 0.1 to 50% by weight of a phosphazene of the general formula I(PN.sub.2-x H.sub.1-y).sub.z Iwhere the numerical values of x, y and z, independently of one another, are as follows:1>x>0.051>y>0.05z>1, andC) from 0 to 70% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to C) is 100%.

Abstract: A preparation process of a polymer comprising conducting ring-opening polymerization of a 4- to 10-membered ring-opening polymerizable cyclic monomer in the presence of a phosphazenium salt of an active hydrogen compound represented by the chemical formula (1): ##STR1## wherein n is an integer of 1 to 8 and indicates the number of phosphazenium cations, Z.sup.n- is an anion of a n-valent active hydrogen compound derived by releasing n protons from an active hydrogen compound having a maximum of 8 active hydrogen atoms, a, b, c and d are individually a positive integer or 0 and are not all 0 at the same time, R's are the same or different hydrocarbons having 1 to 10 carbon atoms, and two R's located on each common nitrogen atom may be coupled together to form a ring structure; or in the presence of the phosphazenium salt of the active hydrogen compound and the active hydrogen compound is disclosed.

Abstract: The present invention relates to a styryl polymer, represented by the following formula (I) or (II), a production method thereof and use thereof to a photosensitive member and a electroluminescence element: ##STR1## in which Ar.sub.11 is an arylene group which may have a substituent; Ar.sub.12 is an aryl group, a polycondensed ring group or a heterocyclic ring group; n.sub.1 is a natural number; ##STR2## in which Ar.sub.21, Ar.sub.22, and Ar.sub.24 are respectively an arylene group which may have a substituent; Ar.sub.25 is an arylene group or a bivalent polycondensed ring group, which may have a substituent; Ar.sub.23 and Ar.sub.26 are respectively an alkyl group, an aralkyl group or an aryl group, which may have a substituent; m.sub.2 is 0, 1, 2 or 3; n.sub.2 is a natural number.

Abstract: This invention relates to a polymerizable phosphazene derivative with a general structural formula[.brket open-st.NP(A).sub.a (B).sub.b).brket close-st.]xwherein the groups A and B are bonded to phosphorus atoms through --O--, --S--, --NH--, or --NR-- (with R=C.sub.1 -C.sub.6) alkyl), and wherein A stands more precisely for a vinyl ether group or a styrene ether group, and B stands more precisely for a hydrocarbon group. The invention also relates to procedures for synthesizing such phosphazene derivatives. The phosphazenes derivatives of the invention can be cured by a process that is initiated cationically, which leads to a large number of advantages. The phosphazene derivatives of the invention can, in particular, be used as curable binders for paints, coatings, fillers, mastics, adhesives, moldings, or films. Paints or coatings comprising the phosphazene derivatives of the invention show especially high mechanical resistance and scratch resistance.

Abstract: This invention relates to a polymerizable phosphazene derivative with a general structural formula.brket open-st.NP(A).sub.a (B).sub.b).brket close-st..sub.xwherein the groups A and B are bonded to phosphorus atoms through --O--, --S--, --NH--, or --NR-- (with R=C.sub.1 -C.sub.6) alkyl), and wherein A stands more precisely for a vinyl ether group or a styrene ether group, and B stands more precisely for a hydrocarbon group. The invention also relates to procedures for synthesizing such phosphazene derivatives. The phosphazenes derivatives of the invention can be cured by a process that is initiated cationically, which leads to a large number of advantages. The phosphazene derivatives of the invention can, in particular, be used as curable binders for paints, coatings, fillers, mastics, adhesives, moldings, or films. Paints or coatings comprising the phosphazene derivatives of the invention show especially high mechanical resistance and scratch resistance.

Abstract: A process for making a phosphoester polymer comprising the recurring monomeric units of formula I: ##STR1## wherein: X is --O-- or --NR"--, where R" is H or alkyl;L is a divalent organic moiety;R' is H, alkyl, alkoxy, aryl, aryloxy, heterocyclic, or heterocycloxy; andn is between about 25 to 2,000,is described. The process comprises the steps of:(a) polymerizing in the presence of a solvent p moles of a di-XH compound having formula II:H--X--L--X--H IIwherein X and L are as defined above, with q moles, where p.apprxeq.q, of a phosphorodihalo compound to form a polymer of formula I, wherein n is about 12 to 1000, having a first molecular weight Mw.sub.

Abstract: The invention relates to hardenable compositions which contain as the essential constituent, in the non-hardened condition, at least one phosphazene derivative of the general formula [NP--(X--Y--Z).sub.2 ].sub.n, and at least one cross-linking agent with at least two functional groups which are selected among the Z radicals and which can react with the functional Z radicals of the phosphazene derivative is provided, whereinX radicals are from the group --O--, --S--, --NH-- or --NR--, preferably oxygen,Y are aliphatic, cycloaliphatic, aromatic and/or heteroaromatic hydrocarbon groups,Z are functional radicals from the group --OH, --NH.sub.2, --NCO, --COOH, --CHO, --CH.dbd.CH.sub.

Abstract: The invention relates to an emulsion polymerization process for preparing a latex binder for use in paint. The process involves reacting a water-soluble or water-dispersible polymerizable surfactant having a terminal allyl amine moiety with at least one ethylenically unsaturated monomer and ionic monomer at a pH from about 2 to about 7. Significantly lower levels of the polymerizable surfactants are required to control the latex particle size and to stabilize the latex particles at high solids content as compared to the amount of conventional anionic surfactants used to stabilize a latex.

Abstract: This invention relates to a polymerizable phosphazene derivative with a general structural formula.brket open-st.NP(A).sub.a (B).sub.b).brket close-st..sub.xwherein the groups A and B are bonded to phosphorus atoms through --O--, --S--, --NH--, or --NR-- (with R=C.sub.1 -C.sub.6) alkyl), and wherein A stands more precisely for a vinyl ether group or a styrene ether group, and B stands more precisely for a hydrocarbon group. The invention also relates to procedures for synthesizing such phosphazene derivatives. The phosphazenes derivatives of the invention can be cured by a process that is initiated cationically, which leads to a large number of advantages. The phosphazene derivatives of the invention can, in particular, be used as curable binders for paints, coatings, fillers, mastics, adhesives, moldings, or films. Paints or coatings comprising the phosphazene derivatives of the invention show especially high mechanical resistance and scratch resistance.

Abstract: The present invention relates to a storage-stable, phosphorus-modified epoxy resin having an epoxide value of 0.05 to 0.6 mol/100 g and comprising 5 to 25% by weight of an ester-anhydride formed from a phosphonic acid diester, phosphinic acid ester or mixture of these esters and phosphorus pentoxide, and to a process for its preparation by reaction of 95 to 75 parts by weight of an epoxy resin (A) having an epoxide value of 0.1 to 0.8 mol/100 g and 5 to 25 parts by weight of the ester-anhydride in the presence or absence of a solvent at -20 to 150.degree. C.

Abstract: New and useful products are based on sheeted cellulose impregnated with a polyfunctional isocyanate and a fire retardant material. The fire retardants are chosen from organophosphorous esters compatible with the isocyanate in the proportions used. Preferred impregnating compositions use about one part of isocyanate and two parts of a halogenated diphosphate ester. Other compatible phosphorous based materials may be included for viscosity control.

Abstract: An anti-fogging coating composition contains (a) an inorganic alkoxide and/or a hydroxyl group-containing polymer formed therefrom by hydrolysis and polycondensation, the inorganic alkoxide being represented by the formula (I):M(OR).sub.n (X).sub.a-n (I),wherein M is an inorganic element selected from the group consisting of Si, Al, Ti, Zr, Ca, Fe, V, Sn, Li, Be, B and P; R is an alkyl group; X is an alkyl group with or without functional groups or a halogen atom; a is a number representing the valence of M; and n is an integer from 1 to a; (b) a polyalkylene oxide, a weight ratio of the polyalkylene oxide to the inorganic alkoxide and/or the hydroxyl group-containing polymer being 100/1-100/150; (c) 0.5 parts by weight or less of an acid catalyst per 100 parts by weight of (a); (d) 0.

Abstract: The invention relates to a flame-resistant epoxy resin mixture comprising epoxy resins, phosphorus-containing compounds and a curing agent, wherein the epoxy resin mixture comprises phosphorus-containing structural units of the formula I ##STR1## in which R1 is an alkyl or aryl group having from 1 to 10 carbon atoms, R2 is hydrogen or an alkyl group having from 1 to 4 carbon atoms and R is an alkylene, cycloalkylene or arylene group having from 2 to 20 carbon atoms.

Abstract: The present invention relates to a process for preparing of phosphorus-containing dicarboxylic acids of the formula (I) ##STR1## where R.sup.1 and R.sup.2 are identical or different and are each a straight-chain or branched alkyl radical having from 1 to 8 carbon atoms, a cycloaliphatic radical having 5 or 6 carbon atoms in the ring, an unsubstituted or substituted aryl radical having from 6 to 10 carbon atoms, or R.sup.1 and R.sup.2 form, with inclusion of the phosphorus atom, a ring having from 5 to 8 members, and m and n are each, independently of one another 0 or 1, by reacting a compound of the formula (II) ##STR2## where R.sup.1, R.sup.2 and m are as defined above, with fumaric acid, maleic acid or itaconic acid in the presence of a saturated aliphatic monocarboxylic acid having a total of from 1 to 5 carbon atoms as solvent at from 100.degree. to 200.degree. C. under atmospheric pressure or superatmospheric pressure.

Abstract: A method for purification of a polyphosphazene polyacid or acid salt thereof in which a polyphosphazene polyacid or acid salt thereof is dissolved in a concentrated aqueous solution of a salt of monovalent ions. The resulting aqueous solution of the polyphosphazene polyacid or acid salt thereof and the at least one salt of monovalent ions then is diluted to reduce the concentration of the at least one salt of monovalent ions, whereby the polyphosphazene polyacid or acid salt thereof is precipitated. The precipitated polyphosphazene polyacid or acid salt thereof then is recovered.

Abstract: The invention relates to a phosphorus-modified epoxy resin having an epoxide value of from 0 to 1.0 mol/100 g, comprising structural units derived from(A) polyepoxide compounds having at least two epoxide groups per molecule and(B) diphosphinic acids,to a process for their preparation and to their use.

Abstract: Process for the preparation of polycondensates of amino acids or of the polypeptide hydrolysates thereof, by bulk thermal polycondensation of amino acids in pulverulent medium, in the presence of phosphoric acid, phosphorus pentoxide or polyphosphoric acid (catalyst) which is uniformly distributed in the said pulverulent medium, optionally followed by hydrolysis. The said pulverulent medium may be obtained by empasting the amino acid and the catalyst with water, removal of the water and grinding.Use of polyimide polycondensates or the polypeptide hydrolysates thereof in detergent compositions.

Abstract: Epoxy resin mixtures to produce prepregs and composites contain the following components:a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, made up of structural units derived from(a) polyepoxy compounds with at least two epoxy groups per molecule and(b) phosphinic acid anhydrides, phosphonic acid anhydrides or phosphonic acid half-esters;dicyandiamide and/or an aminobenzoic acid derivative as the hardener;an amino hardening accelerator.

Abstract: A process for the manufacture of polyketones wherein carbon monoxide and at least one olefin are polymerized in the presence of a catalyst. The catalyst is prepared by reacting together a promotor; a source of a Group VIII metal; and a compound of the formula A.sub.2 PR.sup.1 PA.sub.2 wherein each A is independently a hydrocarbyl group or a Group B bonded to the phosphorous of the PA.sub.2 moiety directly through a nitrogen, sulphur or oxygen and R.sup.1 is a divalent organic group, with the proviso that at least one of the two A groups bonded to each phosphorous is a Group B.

Abstract: The present invention relates to phosphorus-modified epoxy resins of the formulae (I) and/or (II) ##STR1## The invention furthermore relates to a process for the preparation of these phosphorus-modified epoxy resins and to their use for the production of shaped articles, coatings or laminates.

Abstract: For better flame-retardant finishing and better workability of an epoxy-anhydride reaction resin system, it is proposed to supplement the reaction resin system with phosphonic semi-ester as additional reactive constituents. These are produced by conversion of phosphonic acid anhydride with single-valent or multi-valent alcohols. As a result of the selection of the alcohol constituent, property features of the molding material modified therewith that are already advantageous can be designationally set without thereby negatively influencing the hardening characteristic. Even with slight parts of phosphonic acid semi-ester, shaped members manufactured therefrom exhibit an adequate flame-retardant behavior given an otherwise unmodified property profile.

Abstract: The invention relates to expandable, halogen-free, flame-retardant coating compositions comprising epoxy resins, polyphosphoric esters and a curing agent, which composition comprises from 75 to 95 parts by weight of epoxy resin and from 5 to 25 parts by weight of polyphosphoric ester and wherein the overall weight ratio of epoxy resin and polyphosphoric ester to curing agent is (1.1 to 10) to 1. The invention likewise relates to a process for preparing such expandable, halogen-free coating flame-retardant, compositions comprising epoxy resins and polyphosphoric esters and a curing agent, and to their use, in particular as an intumescent coating.

Abstract: Epoxy resin mixtures for the production of prepregs and composites contain the following components:a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, made up of structural units derived from(a) polyepoxy compounds with at least two epoxy groups per molecule, and(b) phosphinic acid anhydrides, phosphonic acid anhydrides, or phosphonic acid half-esters;an amine-substituted aromatic sulfonic acid amide or hydrazide as a hardener;an amino hardening accelerator.

Abstract: The invention relates to an expandable, halogen-free, flame-retardant coating composition comprising epoxy resins, polyphosphoric/polyphosphonic esters and a curing agent, which composition comprises from 75 to 95 parts by weight of epoxy resin and from 5 to 25 parts by weight of polyphosphoric/polyphosphonic ester and wherein the overall weight ratio of epoxy resin and polyphosphoric/polyphosphonic ester to curing agent is (1.1 to 10) to 1. The invention likewise relates to a process for preparing such coating compositions and to their use.

Abstract: The present invention relates to phosphorus-modified epoxy resins having an epoxy number from 0 to 1 mol/100 g, comprising structural units which are derived from(A) polyepoxy compounds having at least two epoxy groups per molecule, and(B) phosphinic and/or phosphonic anhydrides.The invention further provides a process for preparing these phosphorus-modified epoxy resins and provides for the use of the resins in producing moldings, coatings or laminates.