Abstract: Photo-crosslinkable, novel polymers with side tricyclic imidyl groups, for example those of the formula ##STR1## are described. The novel photo-crosslinkable polymers are suitable for photo-mechanical applications, for example for the production of printing plates for the offset printing process and especially as photo-resists. They have high UV absorption and ensure a high rate of crosslinking even without the addition of photosensitizers.

Abstract: Copolyamides derived from a mixture of short-chain and long-chain saturated aliphatic dicarboxylic acids, piperazine and a polyoxyalkylene diamine are excellent hot melt adhesives useful with a variety of substrates. These thermoplastic copolyamide resins are particularly useful adhesives for vinyl materials and are resistant to creep.

Abstract: New dinitriles are prepared by reacting an alpha, beta saturated nitrile with an alpha, beta unsaturated nitrile. For this preparation subzero temperatures are preferred. Higher diamines can be prepared by hydrogenating the dinitriles thus obtained, such diamines being reacted with a dicarboxylic acid or a salt, ester or chloride of such an acid to prepare polyamides having an amorphous character, i.e. transparent polyamides.

Abstract: A thermosetting resin composition suitable for use as a molding material comprising (a) a reaction product mixture obtained by preferably reacting 1 mole of a dicarboxylic acid anhydride having ethylenic carbon-carbon double bond such as maleic anhydride with 2-20 moles of a diamine such as 4,4'-diaminodiphenylmethane in a molten state and (b) an epoxy compound having more than one 1,2-epoxy group on the average gives a cured product excellent in heat resistance, etc., when cured with heating at a temperature of 150.degree. to 200.degree. C.

Abstract: A N-substituted piperazine or N-substituted homopiperazine adduct with a polyepoxide is used as a co-curing agent in epoxy resin systems containing a polyepoxide and a known curing agent such as dicyandiamide, a carboxylic acid anhydride, or a dihydrazide. The preferred adducts have a ratio of epoxy groups to secondary amino groups of between 1.2:1 and 3:1. The preferred polyepoxides are polyglycidyl ethers of 4,4'-isopropylidenediphenol (bisphenol A). Suitable adducts are prepared from N-methyl-, N-(2-hydroxyethyl)-, N-octyl-, N-phenyl- and N-benzyl piperazine and N-methyl homopiperazine.

Abstract: The invention entitled "Polymers containing polyalkylpiperidines and use thereof as stabilizers" provides a class of polymers in which groups containing sterically hindered polyalkylpiperidines are linked in the main chain of the polymers via bridging members containing 2-hydroxy-1,3-trimethylene groups.The polymers show superior stabilizing effects for various synthetic polymers such as polyolefins against degradation thereof induced by light and/or heat. The polymers have advantages, as compared with known stabilizer compounds, that they hardly volatile upon processing with heating or during storage of articles containing thereof, and that they are resistant to extraction with solvents from articles containing thereof.

Abstract: There is disclosed the reaction product of an epoxy resin and a metal complex which is a reaction product of tungsten carbonyl and/or molybdenum carbonyl with pyrrolidine.

Abstract: A powder coating composition comprising:(a) a compound having at least two epoxy groups in the molecule;(b) a compound having at least two carboxyl groups in the molecule; and(c) a compound of the formula: ##STR1## wherein m and n are each an integer of 1-10.sup.5 provided that m.ltoreq.n; R.sub.1 is a residue of a mono or polybasic carboxylic acid; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are, the same or different, each an unsubstituted or substituted C.sub.1-30 alkyl, C.sub.6-10 cycloalkylalkyl, C.sub.5-8 cycloalkyl, C.sub.6-20 aryl or C.sub.7-30 aralkyl or at least two of them many form together with nitrogen atom a saturated or unsaturated heterocyclic group, said composition being able to be thermoset at low temperature and form a paint film having excellent surface smoothness without browning of the film.

Abstract: Primary diamines of the formula ##STR1## wherein R is a straight chain saturated hydrocarbon of 2 to 4 carbons, a disubstituted benzene ring, or disubstituted dibenzo methane for use as a curing agent for epoxy resins. These curing agents can be used to form epoxy resin mixtures useful in filament winding and pre-impregnated fiber molding and in formulating film adhesives, powder coatings and molding powders. The epoxy mixtures form for such uses as room temperature non-reacting, intermediate stable state which has a latent cross-linking capability.

Abstract: Water-soluble polyamines which are obtainable by reacting(A) one or more water-soluble or water-dispersible basic polyamides which have been prepared by condensation of aliphatic polyamines containing at least two primary amino groups and at least one secondary or tertiary amino group, or of mixtures of these polyamines and of aliphatic, cycloaliphatic, araliphatic or heterocyclic polyamines containing two primary or two secondary amino groups or one primary and one secondary amino group, with saturated aliphatic dicarboxylic acids containing 4-10 carbon atoms, or with functional derivatives thereof and optionally with .omega.-aminocarboxylic acids containing at least 3 carbon atoms, or lactams thereof,(B) one or more polyalkylenepolyamines of the general formula ##STR1## in which R denotes H or CH.sub.

Abstract: 2,3-Di-(carboxyphenyl) oxirane compounds and essentially linear polyesters and copolyesters therefrom. The esters are useful as plasticizers for polyvinylchloride.

Abstract: A process for removing heavy-metal ions from aqueous solutions, particularly from effluents. The process comprises bringing the aqueous solutions into contact with a water-insoluble adsorbent which has been produced from:(a) a basic polynitrogen compound capable of being acylated;(2) an aliphatic or araliphatic carboxylic acid containing mobile substituents or a multiple bond capable of undergoing addition; and(3) a crosslinking compound which contains at least two reactive substituents and which is different from component (2).

Abstract: The application discloses compositions which can be shaped to form yarns, fibers, films, membranes and fibrids. They contain a particular statistical or ordered copolyamide, with an inherent viscosity of at least 1, or units containing radicals of which at least 5% are flexible radicals and the others are rigid radicals. These compositions make it possible to produce yarns, fibers, films, membranes and fibrids possessing superior mechanical properties, which find applications in the textile field, as reinforcements in composite materials in the rubber industry and coated fabrics.

Abstract: Copolyamides derived from a mixture of short-chain and long-chain saturated aliphatic dicarboxylic acids, piperazine and a polyoxyalkylene diamine are excellent hot melt adhesives useful with a variety of substrates. These thermoplastic copolyamide resins are particularly useful adhesives for vinyl materials and are resistant to creep.

Abstract: A method for preparing heterochain polymers, viz. polyamides or polyarylates which comprises an interphase polycondensation of diamines or bisphenols with dihaloanhydrides of dicarboxylic acids; said interphase polycondensation is performed by atomization of dihaloanhydrides of dicarboxylic acids in the form of an aerosol by means of a compressed gas into an aqueous solution of said diamines or bisphenols; concentration of said dihaloanhydrides of dicarboxylic acids in the aerosol is maintained within the range of from 0.4.times.10.sup.-4 to 2.times.10.sup.

Abstract: The invention relates to semipermeable membranes with a water absorption capacity of from 4.5 to 11% by weight, preferably from 4.5 to 8% by weight, as measured on approximately 40.mu. thick symmetrical films at room temperature and at 65% relative air humidity, a throughflow of 130 to 200 l/m.sup.2 d for a desalination level of 94.6 to 99.5% and consisting of an aromatic heterocycle-containing copolyamide with a relative viscosity of .gtoreq.1.4, as measured on a 0.5% N-methyl pyrrolidone solution at a temperature of 20.degree. C.

Abstract: Amide-imide polymers formable in deep section and prepared by the condensation reaction of at least one of a diacid halide or a polyanhydride or equivalent, and a diamine containing at least one imide linkage. Soluble amide-imide polymers having the general formula: ##STR1## where n is an integer greater than 10 and preferably greater than 20.

Abstract: An imidazole-isocyanuric acid adduct having the following general formula is disclosed: ##STR1## wherein R.sub.1 is a member selected from the group consisting of a hydrogen atom, a .beta.-cyanoethyl group and a .beta.-[3,5-diamino-S-triazinyl-(1)]-ethyl group, R.sub.2 stands for a monovalent hydrocarbon group having up to 17 carbon atoms, R.sub.3 is a member selected from the group consisting of a hydrogen atom and an alkyl group having up to 4 carbon atoms, with the proviso that when R.sub.1 is a hydrogen atom, R.sub.2 is a methyl or phenyl group and R.sub.3 is a hydrogen atom and when R.sub.1 is a .beta.-cyanoethyl group, R.sub.2 is a phenyl group and R.sub.3 is a hydrogen atom, and n is a number of from 0 to 2.This adduct has peculiar characteristics not possessed by ordinary salts. Namely, the adduct is stable in water, and it decomposes in a solvent or under heating. The adduct is valuable as a curing agent for epoxy resins, and it can be utilized for purification of imidazoles.

Abstract: Curable mixtures of polyepoxide compounds which contain an amine curing agent have longer curing times, and thus, in particular, good workability when used as adhesives, when N,N-dimethylethylenediamine derivatives or N,N-dimethyl-1,3-propylenediamine derivatives are used as the curing agents. The mechanical properties are also frequently improved.

Abstract: A polphthalocyanine with the structure formula: ##STR1## prepared by mixing SnCl.sub.2.2H.sub.2 O with N, N'-bis(3,4-dicyanophenyecane diamide of which the structural formula is: ##STR2## heating the mixture to a temperature from about 175.degree. C. to about 185.degree. C. for about 15 to 20 minutes to form a resin; and curing the resin at a temperature from about 190.degree. C. to about 230.degree. C. The polyphthalocyanine is useful as an adhesive, as a matrix for glass or carbon-fiber reinforced composites, and as structural material.

Abstract: Heavy reaction product after separation as by distillation of light reaction product or diadduct from a reaction mixture obtained by reaction of olefinically unsaturated nitriles with monoolefinic hydrocarbons containing an allylic hydrogen atom is hydrogenated to produce a polyamine mixture. The mixture thus produced is useful as an epoxy resin hardener yielding cured resins exhibiting low water absorption.

Abstract: Bis-anthranilates of the formula I ##STR1## or mixtures thereof, in which, in the formula, m and n are each 0 or a number from 1 to 5, preferably a number from 1 to 3, and the sum of m and n must be at least 1, as novel chain extenders and crosslinking agents for the production of polyurethanes and polyurea resins. The compounds of the formula I are also suitable as curing agents for epoxide resins.

Abstract: Bis-anthranilates of the formula ##STR1## or mixtures thereof, in which, in the formula, m and n are each 0 or a number from 1 to 5 and the sum of m and n must be at least 1, y is 0 or 1 and X is an alkylene radical having 1 to 8 C atoms, para- or meta-phenylene or para-cyclohexylene.The novel compounds are valuable chain extenders and crosslinking agents for the production of polyurethanes and polyurea resins and are also suitable as curing agents for epoxide resins.

Abstract: An epoxy resin curing agent comprising a compound represented by the formula (I): ##STR1## wherein k, m and n, which may be the same or different, each is an integer of 1 to 6, and l is an integer of 0 to 6, and/or a modified product thereof, a curable epoxy resin composition comprising an epoxy resin and the epoxy resin curing agent represented by the formula (I), and a cured product obtained from the epoxy resin composition.

Abstract: A novel epoxy resin curing accelerator comprises oligomeric poly(ethylenepiperazine). The resins comprise a vicinal polyepoxide, a curing agent, and an amount of oligomeric poly(ethylenepiperazine) effective for accelerating the cure of the polyepoxide.

Abstract: Polyimides of the formula ##STR1## Methods of making and polymerizing precursors for such polymers. Coating and adhesive compositions including constituents which can be converted into polyimides with the foregoing structure. Methods of making and using the compositions. Adhesion promoters for such compositions which are reaction products of aromatic dianhydrides and cyclic oxoimines, and methods of producing and using the adhesion promoters.

Abstract: A fluorine-containing copolymer which comprises essentially as the constituting units (a) a group of the formula: ##STR1## wherein Rf is a perfluoroalkyl group having 3 to 21 carbon atoms and n is an integer of 0 or 1, (b) a group of the formula: ##STR2## wherein R is a residue obtained by eliminating a group: ##STR3## from a cyclic acid anhydride and (c) a group of the formula: ##STR4## wherein R' is a hydrogen atom, an alkyl group or an aryl group and m is an integer of 2 or 3, and is useful as a water and oil-repelling agent or a non-sticking agent.

Abstract: 1,4-Diaminobutanes of the formula ##STR1## in which R.sup.1 is H or --CH.sub.3 and R.sup.2 and R.sup.3 independently of one another are each a radical of the formula ##STR2## in which A is alkyl having 1 to 3 C atoms, --OCH.sub.3, --N(CH.sub.3).sub.2, --Cl or --Br and R.sup.2 also is alkyl having 1 to 3 C atoms, are prepared according to the invention by catalytically hydrogenating succinic acid dinitrile of the formula ##STR3## in the presence of acetic anhydride and hydrolyzing the N,N'-diacetyl-1,4-diaminobutanes thus obtained to diamines of the formula I, which are valuable curing agents for epoxide resins.

Abstract: Novel thermoplastic adhesive components, prepared from inexpensive and readily available synthetic materials, having melting points between about 20.degree. C. to about 180.degree. C. and broad ranges of hardness, flexibility and compatibility are disclosed. The novel thermoplastic compounds useful in adhesive formulations are comprised of a resinous polyamide reaction product of a polyoxypropylene polyamine having an average molecular weight of from about 190 to about 3,000 and being selected from diamines, triamines, or mixtures thereof, piperazine and an aliphatic or aromatic dicarboxylic acid, ester or anhydride having from about 4 to about 20 carbon atoms per molecule. The resinous polyamide reaction product is prepared by mixing and reacting the polyoxypropylene polyamine, piperazine, and dicarboxylic acid materials in a total amine:acid molar ratio within the range of from about 0.25:1.0 to about 4.0:1.0 at a temperature of from about 175.degree. C. to about 270.degree. C.

Abstract: Disclosed is an epoxy resin composition containing, as an essential curing component, 2,3,3',4'-biphenyltetracarboxylic dianhydride which is highly compatible with epoxy resins at a relatively low temperature and effective for producing cured epoxy resins having an excellent thermal resistance.

Abstract: Fibers of a copolyamide derived from a diamine component including 10 to 50 mole % of benzidine sulfone or 2,7-diaminophenanthridone and 90 to 50 mole % of p-phenylene diamine and a dicarboxylic acid component derived from a reactive derivative of terephthalic acid are disclosed. The fibers have an initial modulus of elasticity of at least 400 g/d and a tensile strength of at least 16 g/d.The fibers have in combination various desirable properties, such as excellent initial modulus of elasticity, high tensile strength, high knot strength, high heat resistance and good adhesiveness to various plastics, rubbers and adhesives, and they are valuably used in various industrial fields as fibrous reinforcers and for production of fiber-reinforced plastics and rubber products.

Abstract: Polyepoxide resins are adducted with amines and the adducts are then reacted with cyclic dicarboxylic acid anhydrides. The resulting resinous products when salted with an amine are water soluble or water dispersible. The resinous solutions or dispersions can be formulated into coating compositions particularly useful for metal substrates.

Abstract: Novel polymers, useful as films or filaments, are prepared as by the reaction of a bispiperazide with a reactive derivative of an acid.

Abstract: Carboxylated amide polymers and coating compositions containing same are especially useful for the coating of food and beverage containers. The carboxylated amide polymers are the reaction product of (1) a compound of formula: ##STR1## wherein A is the organic residue resulting from a ring opening reaction of a 1,2-epoxy group on a polyepoxide with ammonia or amine, R.sub.1 is hydrogen or a C.sub.1-4 alkyl group, R.sub.2 is a C.sub.2-12 alkylene group, x is 0 or 1, y is from 0 to 4, R.sub.3 is hydrogen or a C.sub.1-6 alkyl group, R.sub.4 is hydrogen or a C.sub.1-6 alkyl group, provided at least one R.sub.1, R.sub.3 or R.sub.4 is hydrogen, and n is at least 1.0 with (2) a cyclic anhydride of a dibasic carboxylic acid. The carboxylated amide polymers can be made water reducible by neutralizing the polymer with an organic or inorganic base and used in aqueous coating compositions.

Abstract: Anthranilates of the formula ##STR1## wherein each R is hydrogen or ##STR2## each n is the number 2, 3 or 4, y is nought or 1 and X is an alkylene radical having 1 to 8 C atoms, meta- or para-phenylene or meta- or para-cyclohexylene, are obtained by reacting a hydroxyalkylated dicarboxylic acid diamide of the formula ##STR3## wherein each R is hydrogen or --CH.sub.2).sub.n OH and n, y and X are as defined above, with isatoic anhydride, preferably in the presence of an alkaline catalyst.The novel compounds are valuable chain extenders and crosslinking agents for the production of polyurethanes and polyurea resins and are also suitable as curing agents for epoxide resins.

Abstract: An aromatic polyamide having a high degree of polymerization is produced by polymerizing(A) a mixture of an aromatic diamine of the formula (1):H.sub.2 N--Ar.sub.1 --NH.sub.2 (1)and an aromatic dicarboxylic acid dihalide of the formula (2):XOC--Ar.sub.2 --COX (2)(b) a mixture of the aromatic diamine of the formula (1), the aromatic dicarboxylic acid dihalide of the formula (2) and a hydrogen halide salt of an aromatic amino carboxylic acid halide of the formula (3):XH.multidot.H.sub.2 N--Ar.sub.3 --COX (3)or(C) the hydrogen halide salt of the aromatic amino carboxylic acid halide of the formula (3) alone,Wherein Ar.sub.1, Ar.sub.2 and Ar.sub.

Abstract: Novel thermoplastic adhesive components, prepared from inexpensive and readily available synthetic materials, having melting points between about 20.degree. C. to about 180.degree. C. and broad ranges of hardness, flexibility and compatibility are disclosed. The novel thermoplastic compounds useful in adhesive formulations are comprised of a resinous polyamide reaction product of a polyoxypropylene polyamine having an average molecular weight of from about 190 to about 3,000 and being selected from diamines, triamines, or mixtures thereof, piperazine and an aliphatic or aromatic dicarboxylic acid, ester or anhydride having from about 4 to about 20 carbon atoms per molecule. The resinous polyamide reaction product is prepared by mixing and reacting the polyoxypropylene polyamine, piperazine, and dicarboxylic acid materials in a total amine:acid molar ratio within the range of from about 0.25:1.0 to about 4.0:1.0 at a temperature of from about 175.degree. C. to about 270.degree. C.

Abstract: A polybenzimidazole having a polymer chain with the following repeating unit: ##STR1## R.sub.2 is a divalent carbon ring with the linkage to an adjacent repeating unit through adjacent carbon atoms of the ring. Such polybenzimidazoles are formed by the condensation of (a) a substitute carbon ring compound, having at least one dicarboxylic anhydride or its equivalent substituted at adjacent carbon atoms and (b) an organic tetraamine of the following formula: ##STR2## Polybenzimidazoles of the foregoing type may be formed by the use of a tetracarboxylic dianhydride in the condensation reaction. These cross-linked polymers are characterized by minimal softening or burning at high temperature.

Abstract: Nylon copolymer containing piperazine and a process for finishing leather and imitation leather, having a surface of polyurethane or plasticized PVC, by applying a solution of this nylon copolymer and drying it. The overall properties of the finish are better then those of conventional finishes.

Abstract: This invention relates to novel isometric polyamide resins.

Abstract: The present invention relates to polycondensates of the formula 10, their use for absorbing metal ions of the transition elements of the periodic system and their use for the preparation of polymers containing metals of formula 11 which have e.g. improved resistance to heat and to chemicals compared to the corresponding polycondensates of formula 10.

Abstract: To accelerate the curing of epoxide resins by means of aromatic polyamines there is added magnesium nitrate or a nitrate of an at least divalent metal of Group IIB, IIIB, IVB, VIB, VIIB, or VIII of the Periodic Table.

Abstract: New dicarboxylic acid derivatives containing a N,N-heterocyclic radical are obtained by reacting 1 mol of a cyclic ureide, such as 1,1-methylene-bis-hydantoin, benzimidazolone, parabanic acid, 6-methyluracil or 2,2-diethylbarbituric acid, with 2 mols of 4-halogenomethylbenzoic acid derivatives. The new dicarboxylic acid derivatives are valuable monomers for the manufacture of stable plastics. Thus, the dicarboxylic acid dialkyl esters, for example, can be converted by means of diols into polyesters with valuable mechanical properties.

Abstract: Room-temperature-curable compositions can be prepared readily by mixing (A) 100 parts by weight of at least one non-cycloaliphatic epoxy resin and (B) from about 1 to about 1,000 parts by weight of at least one amine-terminated liquid polymer having a carbon-carbon backbone, (C) optionally, a chain extender or crosslinker and (D) optionally, a curing agent. The compositions are useful as castable elastomeric systems, as toughened structural plastics, as paints and coatings, as sealants and adhesives, and the like.

Abstract: New crosslinkable bis-imidyl derivatives are described which can be produced by reaction of imidylphthalic acid derivatives, such as maleimidyl-phthalic acid anhydrides, with monomeric, oligomeric or polymeric diamines. The new crosslinkable bis-imidyl derivatives can be used for producing crosslinked polymers which are distinguished, in particular, by their stability to oxidation and to heat.

Abstract: Polymeric piperazinamides suitable for use in reverse osmosis membranes. These polymeric piperazineamides consist essentially of the repeating unit ##STR1## wherein x is zero or a whole number from 1 to 8, R is a substituent such as alkyl, and --A-- is a bivalent radical, namely an organic dicarbonyl radical which either is always of the formula ##STR2## wherein X is oxygen or sulfur, and R' and R" are each hydrogen, alkyl, or aryl, or else where some of said radicals --A-- are of formula (III) and the remainder of said radicals --A-- are organic dicarbonyl radicals differing from said formula (III).

Abstract: This invention relates to a novel aromatic diamine and more particularly to the use of said diamine for the preparation of thermally stable high-molecular weight polymers including, for example, polyamides, polyamideimides, polyimides, and the like. This diamine is obtained by reacting a stoichometric amount of a disodium salt of 2,2-bis(4-hydroxyphenyl) hexafluoropropane with 4-chloronitrobenzene to obtain an intermediate, 2,2-bis[4-(4-nitrophenoxy)phenyl] hexafluoropropane, which is reduced to the corresponding 2,2-bis[4-(4-aminophenoxy)phenyl] hexafluoropropane.

Abstract: A new composition has been found comprising an antistatic fiber selected from the group consisting of polyamide, polyester, polyurea, polyurethane, or polysulfonamide, said fiber containing between about one percent and about twelve percent by weight of at least one compound having a molecular weight above 1500 selected from the group consisting of compounds represented by the formulas: ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from nonovalent hydrocarbon radicals having 1 to 20 carbon atoms derived from aliphatic, aromatic, cycloaliphatic, aromaticaliphatic, heterocyclic hydrocarbons or --(C.sub.r H.sub.2r O).sub.m (C.sub.p H.sub.2p O).sub.q --H; R.sub.5 is at least one of the alkylene difunctional radicals having 2 to 15 carbon atoms and a radical selected from ##STR2## R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are independently selected from R.sub.1, R.sub.2, R.sub.3, R.sub.4, H or another monovalent hydrocarbon radical having 1 to 20 carbon atoms as defined for R.sub.

Abstract: A process for preparing novel isomeric dicarboxy, di (hydroxymethyl), diphenylmethane dilactones wherein benzophenone-3, 4,3',4'-tetracarboxylic dianhydride is subjected to hydrogenation in an ether or ester carrier in the presence of a hydrogenation catalyst pretreated in an ether carrier.

Abstract: To accelerate the curing of epoxide resins by aromatic, heterocyclic, or cycloaliphatic polyamines there are employed salts of trifluoromethanesulfonic acid.