Abstract: The invention concerns the use of monomer-free saturated or unsaturated polyester resins or mixtures of saturated and unsaturated polyester resins containing structural units of general formulae (I) and/or (II), in which n=1-10, as impregnation, sealing and coating compounds for electrical engineering and electronic components and for carrier substances for flat insulating materials.

Abstract: Novel polyfunctional glyoxylated compounds and compositions containing the same are disclosed which are particularly suitable for use as crosslinking components in curable compositions and also find use in imparting wet adhesion properties to water-based paints and coatings. A process for preparing novel polyfunctional glyoxylated compounds is also disclosed.

Abstract: The invention relates to a polymer prepared from the repeat units of residues of a monomer of at least one dicarboxylic acid or ester; a monomer comprising a diol, diamine or a mixture thereof; a monomer comprising at least one sulfonate group and at least one polyester reactive group, and a monomer comprising an optical brightener agent having at least one polyester reactive group. The invention further relates to a method for preparing a polymer. The invention further relates to method of marking an article or composition with the polymer. The invention further relates to a method for detecting and separating an article contacted with the polymer. The invention further relates to an article or composition contacted with the polymer. The invention further relates to a method for enhancing the optical brightness of an article or composition, by contacting the article or composition with the polymer.

Abstract: Biodegradable polyesters based onA) 95-99.99 mol % of at least one polyester A containing as monomeric building blocks of an acid component comprisinga.sub.11) 20-95 mol % of at least one aliphatic or cycloaliphatic dicarboxylic acid or its ester-forming derivative anda.sub.12) 5-80 mol % of at least one aromatic dicarboxylic acid or its ester-forming derivative andat least one dihydroxy compound or at least one amino alcohol or their mixtures, andB) 0.01-5 mol % of a mixture comprising mono-, bi-, tri-, tetra- and higher-nuclear isocyanurates or corresponding compounds containing two, three or four functional groups capable of reacting with the end groups of polyester A, or mixtures of the isocyanurates and the corresponding compounds,as well as molding compositions comprising said polyesters, their manufacture and their use in the manufacture of moldings, filsm, fibers and coatings.

Abstract: Thermoplastic compositions containing certain anthraquinone polysulfonamide colorants incorporated therein as toners or colorants. The anthraquinone colorant moieties which are incorporated into the polymer chain of the polysulfonamide colorants are not leachable, sublimable or extractable and do not exude from the thermoplastic compositions. The anthraquinone polysulfonamide colorants may be added to the thermoplastic polymers during production or melt blended with the polymer by conventional techniques to produce transparent thermoplastic compositions useful for a variety of end uses where nonmigrating or nonextractable colorants are needed.

Abstract: Biodegradable polyesteramides as defined in the specification obtained by reacting a mixture consisting essentially of(a1) from 95 to 99.9% by weight of a polyesteramide,(a2) from 0.1 to 5% by weight of a divinyl ether, and(a3) from 0 to 5 mol % of compound D as defined in the specification, and other biodegradable polymers and thermoplastic molding compositions, processes for the preparation thereof, the use thereof for producing biodegradable moldings, and adhesives, biodegradable moldings obtained from the polymers and molding compositions according to the invention.

Abstract: The invention relates to polymers which form cholesteric phases, to a process for their preparation and to their use.Novel polymers and oligomers which form cholesteric phases essentially consist, as molecular building blocks, ofA. at least one bifunctional chiral molecular building block which contains at least one cyclic structural element other than a monosubstituted p-phenylene group,B. at least one bifunctional achiral or racemic molecular building block which contains at least one cyclic structural element containing at least four ring members, andC. at least one bifunctional molecular building block which can be either chiral or achiral, cyclic or acyclic, and is different from the molecular building blocks A and B actually employed,with the proviso that the molecular building block A is not derived exclusively from camphoric acid.

Abstract: A crosslinking composition including, (a) a major amount of a high molecular weight linear oligomer with at least one functional group and a number average molecular weight per functional group of at least about 1000; (b) a crosslinking agent reactive with the functional groups of the high molecular weight linear oligomer; and (c) a low molecular weight di-(poly)-functional compound having a number average molecular weight per functional group of less than about 400, the functional groups of the low molecular weight di-(poly)-functional compound also being reactive with the cross-linking agent. Crosslinking of the high molecular weight oligomer in the presence of a small amount of the low molecular weight di-(poly)-functional compound provides a crosslinked composition displaying an improved balance of hardness and flexibility.

Abstract: A polymer system having repeating units of the formula: ##STR1## wherein A is --H or --OH, x has a value of 0.5 to 1.0 and y has a value of 1.0-x, exhibits a high glass transition temperature (T.sub.g) and a low dielectric constant. The polymer system is useful in the area of microelectronic packaging.

Abstract: Products are described which are obtainable by reacting compounds of formula I with compounds of formula IIa or/and IIb and IIIa or/and IIIb and additionally, where appropriate, IV ##STR1## wherein the general symbols are as defined in claim 1, the compound of formula I being, for example, methyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate, the compound of formula IIa being, for example, diethanolamine, the compound of formula IIIa being, for example, methyl oleate, and the compound of formula IV being, for example, sulfur. The cited products can be used as liquid antioxidants in organic materials.

Abstract: Condensation products of basic amino acids with copolymerizable compounds which are obtainable by condensing(a) a basic amino acid selected from the group consisting of lysine, arginine, ornithine, tryptophane and mixtures thereof,(b) a copolymerizable compound selected from the group consisting of saturated monobasic carboxylic acids, unsaturated mono-basic carboxylic acids, polybasic carboxylic acids, carboxylic acid anhydrides, diketenes, monohydroxycarboxylic acids, polyhydroxycarboxylic acids and mixtures thereof, and optionally(c) at least one compound selected from the group consisting of amines, lactams, non-proteinogenic acids, alcohols, alkoxylated alcohols, alkoxylated amines, amino sugars, carbohydrates and sugar carboxylic acidsin a molar ratio of (a):(b) of from 100:1 to 1:1 at a temperature of at least 120.degree. C., and a process for the production of said condensation products by condensing compounds (a) and (b) and optionally (c) at a temperature of from 120.degree. to 300.degree. C.

Abstract: Novel polyfunctonal glyoxylated compounds and compositions containing the same are disclosed which are particularly suitable for use as crosslinking components in curable compositions and also find use in imparting wet adhesion properties to water-based paints and coatings. A process for preparing novel polyfunctional glyoxylated compounds is also disclosed.

Abstract: This invention relates to a coating composition for precoated steel sheets which are required to have high hardness, high workability and high distinctness of image, and to a method for producing a precoated steel sheet having a coating film of the composition. The composition is prepared by adding a compound of any of the following (a) to (c) to a coating composition consisting essentially of a polyol and containing, as the curing agent, an isocyanate compound or an amino resin, and the coating film of the composition has both high-level workability and high-level hardness.(a) Polyester compounds comprising main repeating units of a general formula (1): ##STR1## wherein n is an integer; and R is an alkylene group having 10 or less carbon atoms, or a 1,4-cyclohexylene-dimethylene group, or a neopentylene group, or a polyoxyalkylene group.

Abstract: A substrate is coated or impregnated with a composition comprising an a) epoxy resin, b) a liquid amine-terminated polyamide curing agent prepared by condensing an aminoalkylpiperazine and a long-chain dicarboxylic acid, ester or chloride, and c) water.

Abstract: The invention relates to a crosslinkable polymer for use in optics and non-linear optics, which comprises at least one chromophore, characterized in that it has, on at least two of its ends, at least one reactive end group of a different chemical type from the group predominantly used in polymerization and the preparation of a polymer skeleton. Said reactive end group comprises at least one CC, CN, CS, SS or NS double bond and/or triple bond, and/or an epoxy group and/or a thiol group or a derivative of said groups, and the polymerization groups are selected from at least one of the following groups: urethane, ester, amide, imide, ether, carbon-carbon, sulfide, silane and siloxane, urethane and ester groups being particularly preferred. Application in optical and opto-electronic materials and devices.

Abstract: An epoxy resin composition containing a) an epoxy resin, b) a liquid amine terminated polyamine curing agent prepared by condensing an aminoalkylpiperazine and a dicarboxylic acid, and (c) water. An aqueous dispersion of the amine terminated polyamine curing agent used in this invention is useful as a curing agent for water borne applications.

Abstract: An organic solvent based polyester ink formulation having a fluorescing compound therein is suitable for ink jet printing applications. The ink is useful for producing invisible printing/markings on the surface of a variety of materials for identification, authentication, sorting, etc. Suitable printing substrates include porous and non-porous materials such as plastic, film, sheeting, fabric, paper, high gloss paper; metal, foils, plates; rubber; glass; cellophane; wood; and the like. The ink formulation contains at least one organic soluble polyester, having at least one near infrared fluorophore copolymerized therein, dissolved in an organic solvent. Suitable organic solvents include a C.sub.3 -C.sub.6 carbon ketone, a C.sub.3 -C.sub.6 carbon organic ester, a C.sub.1 -C.sub.3 carbon alcohol, or a combination thereof. In a preferred embodiment, the polyester containing the copolymerized near infrared fluorophore is dissolved in a solvent comprising a C.sub.3 -C.sub.6 carbon ketone and a C.sub.1 -C.sub.

Abstract: Thermomechanical and thermo-oxidative stabilities in resin composites across the range of aerospace "engineering thermoplastic" resins are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities of the general formula: ##STR1## wherein Z= ##STR2## .beta.=the residue an organic radical selected from the group consisting of: ##STR3## R.sub.R =a divalent organic radical; X=halogen;Me=methylT=allyl or methallyl.G=--CH.sub.2 --,--S--, --CO--, --SO--, --O--, --CHR.sub.3 --, or --C(R.sub.3).sub.2 --;i=1 or 2;R.sub.3 =hydrogen, lower alkyl, lower alkoxy, aryl, or aryloxy; and.theta.=--C.tbd.N, --O--C.tbd.N, --S--C.tbd.N, or --CR.sub.3 .dbd.C(R.sub.3).sub.

Abstract: The disclosure pertains to an intimate molecular mixture of polyester with an effective amount of compound (A) ##STR1## where n=2 and at least one R.sup.4 group represents a sterically hindered amine group adjacent to the carbonyl, and preferably each R.sup.4 group is a hindered amino group.Exemplary R.sup.

Abstract: A colored polyester copolymer comprising the reaction product of at least one linear thermoplastic polyester precursor and at least ten parts per million by weight of a residue of at least one 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant. A composition may be formed comprising the copolymer in admixture with at least one thermoplastic polymer. The copolymer may be formed by reacting at least one thermoplastic polyester precursor with a 1,4-bis (2,6-dialkylanilino)-9,10-anthraquinone colorant which has a polyester reactive group.

Abstract: Aromatic polyimide powder wherein a solid portion consisting of a highly heat resistant crystalline aromatic polyimide is covered with a coating layer of an amorphous polyimide, and a process for producing polyimide powder molded bodies by compression molding of the powder. The polyimide powder has satisfactory secondary molding workability, and molding thereof gives molded bodies which retain heat resistance and dimensional stability while having high mechanical strength and elongation.

Abstract: Disclosed is a resin paste made from a maleimide having at least two maleimide groups and a liquid diamine. The paste can optionally contain fillers, thickeners, defoamers, coupling agents, and solid epoxies. The resin paste has a long pot life and a short cure time and is dispensable through a syringe.

Abstract: The present invention provides wire-coating compositions comprising polyhydric alcohols which are esterified with naphthalenedicarboxylic acid and/or esterifiable derivatives thereof, optionally in a mixture with further dicarboxylic acids and/or their dicarboxylic acid derivatives, catalysts, organic solvents and additives, and optionally imido-containing and/or imido-forming starting materials. The wire-coating compositions of the invention are stable on storage, have good adhesion, especially to copper wires and have desireable thermal pressure and thermal shock. The compositions also have a high solids content at a viscosity which is favorable for processing.

Abstract: Oligomeric or polymeric substituted or unsubstituted ethylene terephthalate esters comprising fluorescent whitening groups useful as soil release agents in laundry detergent compositions are described. The soil release agents of the present invention are especially suitable for use with polyester and polyester-blended fabric.

Abstract: At least bis-imido 1,3,5-triazines and processes of preparing the same are disclosed. Also disclosed are prepolymers having at least bis-imido functionality and curable compositions comprising at least bis-imido 1,3,5-triazines or prepolymers thereof in combination with active hydrogen and/or epoxy functional materials. The at least bis-imido 1,3,5-triazines and prepolymers may be advantageously employed as crosslinking agents which crosslink by a ring opening reaction that eliminates the release of volatile organic compounds.

Abstract: Coating compositions containing new classes of 1,3,5-triazine compounds as crosslinkers are disclosed, which compounds are of the general formula ##STR1## wherein each of Y, Z, and optionally X are independently selected from a group of the formula (II), (III) and/or (IV) ##STR2## and wherein A, D, Q, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are as defined herein.

Abstract: This invention relates to a thermally stable polyester, comprising:a polyester resin prepared by adding a dicarboxylic acid to a glycol compound, said dicarboxylic acid selected from the group consisting of aliphatic dicarboxylic acids having a total of from 3 to 16 carbon atoms, alicyclic dicarboxylic acids having 7 to 12 carbon atoms, aromatic dicarboxylic acids containing a total of from 8 to 16 carbon atoms, and combinations thereof, and wherein said glycol is selected from the group consisting of glycols having from 2 to 12 carbon atoms, glycol ethers having from 4 to 12 carbon atoms, and combinations thereof,said polyester resin having been prepared in the presence of a catalyst system consisting essentially of one or more antimony compounds which is not reacted with .alpha.-hydroxy carboxylic acids, .alpha.,.beta.-dicarboxylic acids or derivatives thereof.

Abstract: The invention provides a polymer composed of vinyl monomers bearing imidazole, hydroxyl and carboxyl groups arranged in proximity to each other, that exhibits hydrolytic activity similar to serine proteases, and a process for its preparation. The polymer is useful for the hydrolysis of esters and amides to the corresponding alcohols and amines.

Abstract: Chiral nematic polyesters comprise as alcohol component chiral diol structural units and as acid component dicarboxylic acid residues comprising mesogenic groups. The polyesters are particularly suitable for surface coating.

Abstract: A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a cyclic carbonate solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.

Abstract: The yield of fully substituted, multidimensional aromatic hubs in the condensation of hydroxyl and acid halide functionalities is improved by adding a thallium catalyst, such as thallium ethoxide (Tl-OC.sub.2 H.sub.5), in the solvent.

Abstract: This invention relates to a thermally stable polyester, comprising:a polyester resin prepared by adding a dicarboxylic acid to a glycol compound, said dicarboxylic acid selected from the group consisting of aliphatic dicarboxylic acids having a total of from 3 to 16 carbon atoms, alicyclic dicarboxylic acids having 7 to 12 carbon atoms, aromatic dicarboxylic acids containing a total of from 8 to 16 carbon atoms, and combinations thereof, and wherein said glycol is selected from the group consisting of glycols having from 2 to 12 carbon atoms, glycol ethers having from 4 to 12 carbon atoms, and combinations thereof,said polyester resin having been prepared in the presence of a catalyst system consisting essentially of one or more antimony compounds which is not reacted with .alpha.-hydroxy carboxylic acids, .alpha.,.beta.-dicarboxylic acids or derivatives thereof.

Abstract: This invention relates to a plastic composite material which comprises:a thermoplastic plastic sheet and, bonded to one side thereof,a thermoplastic spun felt comprising a hot-melt adhesive, to a method of producing it and to its use.

Abstract: This invention relates to a process of producing a moldable polyethylene terephthalate or modified polyethylene terephthalate having an inherent viscosity greater than 0.6 dL/g comprising reacting the diacid component with the diol component such that a combination of a titanium-based catalyst and a phosphorus-based catalyst is used during the polycondensation steps.

Abstract: Oligomeric or polymeric substituted or unsubstituted ethylene terephthalate esters comprising fluorescent whitening groups useful as soil release agents in laundry detergent compositions are described. The soil release agents of the present invention are especially suitable for use with polyester and polyester-blended fabric.

Abstract: The invention provides a novel preparation process of a polycondensation type polymer, an excellent polymer which is represented by lactic acid and the preparation process of the polymer, a polycondensation agent used for the preparation process, and an intermediate. Specifically, the invention provides a preparation process of the polycondensation type polymer, for example, polyamide, polyimide, polythioester and polyester, comprising bonding a carboxyl group comprising compound with an active hydrogen group comprising compound in the presence of haloiminium salt. The invention provides excellent polylactic acid having a controlled D/L-isomer ratio in the repeating structural units and preparation process of polylactic acid, and further provides a haloiminium salt compound used for the preparation process and an intermediate compound of acid chloride.

Abstract: The invention relates to compounds of the formula I ##STR1## in which n is a number in the range from 1 to 100; X is --R.sup.7 --, --CO--, --CO--CO--, --CO--R.sup.2 --CO--, --CO--NH--R.sup.5 --NH--CO--, --CO--O--R.sup.6 --O--CO-- or ##STR2## where p is a number in the range from 0 to 6, X' is O or a direct bond, E is C.sub.1 -C.sub.12 alkyl, phenyl, C.sub.7 -C.sub.12 phenylalkyl or C.sub.5 -C.sub.12 cycloalkyl, and E' is hydrogen or is as defined for E;Z, when X is R.sup.7, is O or NR.sup.1 ; Z, when X is ##STR3## is O; and Z, in all other cases, is O, NH or NR.sup.1 ;R.sup.1 is C.sub.1 -C.sub.4 alkyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.8 alkanoyl, benzoyl or C.sub.1 -C.sub.4 alkyl-substituted benzoyl;R.sup.2 and R.sup.7 are C.sub.1 -C.sub.18 alkylene; C.sub.2 -C.sub.18 alkylene which is interrupted by O or S; phenylene; a mixed aromatic/aliphatic radical containing 7 to 12 carbon atoms; naphthylene; or an --R.sup.4 --D--R.sup.4 -- radical;R.sup.

Abstract: Poly(ester-imides) containing t-butylhydroquinone and trimellitic anhydride as part of the repeat units, as well as other monomers, are useful as molding resins. The polymers have a high glass transition temperature and are particularly useful in applications requiring good wear resistance.

Abstract: High performance polyester sulfone oligomers are prepared for aerospace applications by condensing mono- or difunctional crosslinkable end caps (i.e. unsaturated hydrocarbons having one or two crosslinking sites) with dicarboxylic acid halides and dialcobols (i.e. diols). Multidimensional oligomers have an aromatic hub from which the polyester chains radiate. Blends of the linear and multidimensional oligomers can be made using compatible, non-crosslinking polymers. Prepregs and composites are formed from the oligomers or blends.

Abstract: Polyimide oligomers include (1) linear, mono-functional crosslinking oligomers prepared by condensing a monoanhydride end cap with a diamine that includes alternating ether and "sulfone" (--SO.sub.2 --, --S--, --CO--, --(CF.sub.3).sub.2 C--, or --(CH.sub.3).sub.2 C--) linkages connecting alternating aromatic radicals and with a dianhydride (or dianhydride mixture), particularly the unsaturated, aliphatic dianhydride commonly known as MCTC; (2) linear, mono- or difunctional crosslinking oligomers prepared by condensing an amine end cap with a diamine and a dianhydride; and (3) multidimensional, crosslinking oligomers having an aromatic hub and at least three radiating arms connected to the hub, each arm including a crosslinking end cap at its distal end and at least one imide linkage.Blends, prepregs, and composites can be prepared from the oligomers.

Abstract: The invention relates to reaction products of polyetheramines with polymers containing dicarboxylic anhydride groups, which contain 20-80, preferably 40-60, mol % of bivalent structural units A and/or C and, if required, B ##STR1## in which R.sup.1 and R.sup.2, independently of one another, are hydrogen or methyl,a and b are equal to zero or one and a+b is equal to one,Y is X or NRR.sup.3,X is --OH, --O--C.sub.1-30 -alkyl, NR.sup.3 R.sup.4 or --O.sup..crclbar. N.sup..sym. R.sup.3 R.sup.4,R.sup.3 and R.sup.4, independently of one another, are hydrogen, C.sub.6 -C.sub.40 -alkyl or R,R is ##STR2## with the proviso that at least 1 mol % of the anhydride groups bonded to the polymer have reacted with a polyetheramine,Z is C.sub.2 -C.sub.4 -alkyl,n is a number from 1 to 1000,R.sup.5 is hydrogen, C.sub.1 -C.sub.30 -alkyl, C.sub.5 -C.sub.12 -cycloalkyl or C.sub.6 -C.sub.30 -aryl andR.sup.6 is hydrogen or C.sub.1 -C.sub.

Abstract: An improved clarity copolyester of a diethylene glycol modified poly(ethylene terephthalate) has a b* value of less than 15, preferably less than 10. The copolyester composition has an inherent viscosity of about 0.4 to 1.0 dL/g and comprises (A) 100 mol percent dicarboxylic acid residue component, (B) 100 mol percent diol residue component, (C) catalyst residues and (D) color control agent residues. The dicarboxylic acid residue component comprises at least 75 mol percent of terephthalic acid residues. The diol residue component comprises 10 to 50 mol percent diethylene glycol residue and 50 to 90 mol percent ethylene glycol residue. The catalyst residues comprise 20 to 100 ppm manganese, 50 to 300 ppm antimony, 0 to 100 ppm titanium and 40 to 150 ppm phosphorus, based on the weight of the copolyester.

Abstract: A method for forming a polyamic acid having nonlinear optical (NLO) or pre-NLO side chains, which method includes the steps of:(1) providing a bis-(aromatic dicarboxylic acid anhydride) containing at least one NLO or pre-NLO side chain having the structure represented by:D-R-Awherein D, R and A form a delocalized resonance configuration in which R is a pi-conjugated non-centrosymmetric moiety, A is hydrogen or an electron withdrawing moiety and D is an electron donating moiety covalently linked to the bis-(aromatic dicarboxylic acid anhydride); and(2) reacting the bis-(aromatic dicarboxylic acid anhydride) with an aromatic diamine to form a polyamic acid having NLO or pre-NLO side chains. Methods for preparing polyamic acids having NLO or pre-NLO side chains by reacting aromatic diamines having NLO or pre-NLO side chains with bis-(aromatic dicarboxylic acid anhydrides) are also disclosed. Methods of forming the polyamic acids into polyimides having NLO side chains are also included.

Abstract: The present invention provides inks which contain a near infrared fluorophoric compound incorporated into a water-dissipatible polyester backbone. The inks of the present invention are preferably colorless or "invisible" but could be made slightly colored if desirable. Specifically, the inks of the present invention comprise:A. between about 1 and 10 weight percent of at least one water-dissipatable polyester having from about 0.1 ppm by weight to about 10% by weight of a thermally stable near infrared fluorophoric compound copolymerized therein;B. between about 5 and 75 weight percent of at least aliphatic humectant;C. between about 0 and 15 weight percent of at least one lower aliphatic alcohol of no more than 3 carbon atoms;D. water and optionally up to about 2 weight percent of one or more additives;wherein the weight percentages of components A-D equal 100%.

Abstract: A curing agent for a composition useful for the production of matt epoxy resin and hybrid powder coatings, comprising a mixture ofa) salts of phthalic acid, isophthalic acid and terephthalic acid with the following amines ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 are identical or different aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radicals having 1-20 carbon atoms and in which one or more CH.sub.2 groups in the carbon chain may be replaced by 0 atoms, by NR.sub.4 groups where R.sub.4 =C.sub.1-6 -alkyl, CH--OH groups, and/or one or more terminal methyl groups may be replaced by dialkyl-substituted amino groups having 1 to 6 carbon atoms, and R.sub.1 and R.sub.2 may form a joint ring in which one CH.sub.2 group may be replaced by an O atom or by an NR.sub.4 group, and R.sub.1 =R.sub.2 =R.sub.3 --CH.sub.2 --CH.sub.2 -- attached via a common nitrogen atom, and n=3-11, and 0.5-2 mol of amine A)-C) per mole of acid, andb) pyromellitic acid and/or trimellitic acid, 0.

Abstract: Polycondensates which contain tartaric acid derivatives, processes for their preparation and use thereof.The invention relates to polycondensates which consist of at least 95 mol % of recurring structural units of the formula I ##STR1## where R.sup.1 is a 2,3-O-alkylidenetartaric acid derivative (II) or furo[2,5] (V), alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl or a heterocycle, X is --O-- --NH-- or --S-- and R.sup.2 is 2,3-O-alkylidene-L-threitol (III) or a compound of the formula VI, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl or a heterocycle, with the proviso that more than 5 mol % of the radicals R.sup.1 and/or R.sup.2 are present in the polycondensate of the formula I, where R.sup.1 is compound of the formula II or R.sup.2 is a compound of the formula III or R.sup.1 is a compound of the formula II and R.sup.2 is a compound of the formula III, or in which more than 5 mol % of the radicals R.sup.1 and R.sup.2 are present in the polycondensate of the formula I, wherea) R.sup.

Abstract: Compounds containing a ureido group which are useful in preparing dispersions of polymers having good wet adhesion properties and low volatility. Compounds having the formula: ##STR1## where R.sup.1 is H or an alkyl group, R.sup.2 is alkylene optionally interrupted with one or more ether oxygen atoms and A is H or a residue of an active hydrogen reactive compound are useful for incorporating ureido and optionally nitrile functionality into polymers and as precursors to amino compounds prepared by reduction of the nitrile group thereof. Compounds having the formula: ##STR2## where B is defined as for A and the same or different than A are also disclosed. The disclosed compounds have use as chain extending or terminating monomers for polyurethane dispersions when one or both of A and B are H and, when one of A and has ethylenic unsaturation, as wet adhesion monomers in dispersions of free radically polymerized polymers of unsaturated monomers.

Abstract: This invention relates to a polyester resin prepared by adding one or more dicarboxylic acid components to one or more glycol components containing 1,4-cyclohexanedimethanol equalling 100 mole %,the polyester resin having been prepared in the presence of a catalyst/stabilizer system consisting essentially of antimony compounds and phosphorous compounds and compounds selected from the group consisting essentially of zinc compounds, gallium compounds, and silicon compounds.

Abstract: The invention relates to salts of pyromellitic acid which comprise 1 mol of pyromellitic acid and 0.5 to 2 mol of a guanidine of the following composition: ##STR1## in which R, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different radicals from the group consisting of hydrogen, alkyl, cycloalkyl and aromatic hydrocarbon residues having 1 to 8 carbon atoms, and R.sup.1 and R.sup.2 and R.sup.3 and R.sup.4 may form a joint ring which may contain an oxygen atom as heteroatom. Also claimed are the preparation of the salts and their use for matt epoxide and hybrid powder coatings.

Abstract: Thermomechanical and thermo-oxidative stabilities in heterocycle or heterocycle sulfone resin composites are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities.