Abstract: The invention relates to a substrate comprising a layer of crystalline triazine with a protective compound having a retention of oxygen barrier at 85% RH of about 50% or better. The protective compound preferably contains an azine-formaldehyde or phenol-formaldehyde resin, preferably with an hydroxy-functional polymer, and is cured.

Abstract: The invention relates to a substrate comprising a layer of crystalline triazine with a protective compound having a retention of oxygen barrier at 85% RH of about 50% or better. The protective compound preferably contains an azine-formaldehyde or phenol-formaldehyde resin, preferably with an hydroxy-functional polymer, and is cured.

Abstract: A crosslinking agent that is an ungelled reaction product of (a) at least one aminoplast resin and (b) at least one aromatic heterocycle containing at least one nitrogen atom wherein the crosslinking agent is essentially free of active hydrogen functional groups and has a glass transition temperature of at least 10° C. is disclosed. Methods for preparing crosslinking agents are also disclosed. Further provided is a curable powder coating composition including a polymer having a glass transition temperature of at least 30° C. containing reactive functional groups and the present crosslinking agent; a multilayer composite coating composition and substrates coated therewith are also disclosed.

Abstract: This invention relates to a process for producing acidic aqueous solutions of melamine-aldehyde type polymers, and particularly melamine-formaldehyde polymer, which have significantly reduced levels of free aldehyde. The process involves the addition of hydrogen peroxide and/or iron in the form of ferric ion to the acidification stage of the production of melamine-formaldehyde polymers. When the process is conducted at elevated temperatures, in the range of 150-180.degree. F., iron is not required to cause destruction of the free formaldehyde. At lower temperatures the presence of iron may be required to achieve satisfactory rates of reaction. The process reduces levels of free formaldehyde to less than 0.1% by weight, such that the polymer solution may be used in a variety of applications with reduced environmental risk.

Abstract: Modified melamine-formaldehyde resins are made of a condensate of formaldehyde, urea, melamine and modifying agents which contains: (a) a combination of 5 to 25 wt %, with respect to melamine, of dicyanodiamide and 8 to 30 wt %, with respect to melamine, of water-soluble polyalcohol with at least two hydroxyalkyl groups, and/or (b) 1.5 to 20 wt % amines having the formulas (Ia)NR.sub.4 R.sub.5 --R.sub.1 --X (Ia)and/or (Ib),NR.sub.4 R.sub.5 --R.sub.2 --Y--R.sub.3 --X (Ib)in which R.sub.1 and R.sub.3 are the same or different and depending on the meaning of X stand for a linear, branched or cyclic C.sub.1 -C.sub.12 alkyl or alkylene radical and R.sub.2 stands for a linear, branched or cyclic C.sub.1 -C.sub.12 alkylene radical; R.sub.4 and R.sub.5 can be the same or different and can stand for H or for a linear or branched C.sub.1 -C.sub.12 alkyl radical; and X can stand for hydrogen, OH or NR.sub.4 R.sub.5 and Y can stand for --O-- or --NH--. The molar ratio of melamine to formaldehyde ranges from 1:1.

Abstract: Condensation products obtained by condensation of(A) a mixture consisting of(a) a triazine of the general formula I ##STR1## and (b) a mixture consisting of(b1) a triazine of the general formula II ##STR2## (b2) a substituted melamine of the general formula III ##STR3## (B) phenols withformaldehyde or formaldehyde-donating compounds are useful for producing shaped articles, especially fibers and foams.

Abstract: A resin composition useful as a binder is provided comprising the reaction product of an amine derivative chosen from melamine, glycolurile or their mixtures with a C.sub.1 to C.sub.8 dialkoxyethanal, the reaction product is then reacted with a polyol.

Abstract: A resin composition useful as a binder is provided comprising a mixture of a formaldehyde-based resin with a resin substitute comprising the reaction product of an amine derivative chosen from melamine, glycolurile or their mixtures with 1 to 2 moles of a C.sub.1 to C.sub.8 dialkoxyethanal, the reaction product is mixed, preferably reacted, with a polyol.

Abstract: A coating composition containing a linear aminoplast-ether copolymer of the formula: ##STR1## where the divalent R.sub.01 contains a divalent alkyleneoxy containing moiety, Amp is the skeletal residue of an aminoplast, R is hydrogen, alkyl containing 1 to about 4 carbon atoms, and acyl containing 1 to about 4 carbon atoms, p is a positive number that is equal to the free valence of Amp minus 2, RO is bonded to alkylene units of Amp, and a is a number greater than 1.

Abstract: Cationic urea/formaldehyde resins are obtainable by condensing urea and formaldehyde in a molar ratio of from 1:1.5 to 1:3 in the presence of polymers which contain not less than 1 mol % of polymerized vinylamine units and have Fikentscher K values of from 5 to 300, in an amount of from 5 to 50 g per mole of urea in the end product, where the mixture is first a) precondensed at a pH of from 8 to 14, then acidified and b) condensed at a pH of from 1 to 5 until gel formation begins, c) then from 0.3 to 1.5 moles of formaldehyde are added per mole of urea used, d) post-condensation is carried out and e) the resin solution is subsequently neutralized. The resins thus obtained are used in papermaking as assistants for increasing the dry and wet strength of paper and result in less dulling of the whiteness of the paper.

Abstract: A resin composition useful as a binder is provided comprising the reaction product of an amine derivative chosen from melamine, glycolurile or their mixtures with a C.sub.1 to C.sub.8 dialkoxyethanal, the reaction product is then mixed with a polyol.

Abstract: Provided are light-absorbing polymers useful for imparting color and/or ultraviolet light screening properties to thermoplastic resins. The polymeric colorants or UV absorbers may be added during the formation of the uncolored thermoplastic polymer or melt or solution blended with other thermoplastic polymers.

Abstract: Water-insoluble condensation products, obtained by the condensation of a mixture containing as essential components(A) from 80 to 99.9 mol %, based on the sum of (A), (B) and (C), of a mixture consisting essentially of(a) from 30 to 99 mol % of melamine and(b) from 1 to 70 mol % of a substituted melamine of the formula I ##STR1## where X, X' and X" are each selected from the group consisting of --NH.sub.2, --NHR and --NRR', and X, X' and X" are not all --NH.sub.2 at one and the same time, and R and R' are each selected from the group consisting of hydroxy-C.sub.2 -C.sub.10 -alkyl, hydroxy-C.sub.2 -C.sub.4 -alkyl-(oxa-C.sub.2 -C.sub.4 -alkyl).sub.n, where n is from 1 to 5, and amino-C.sub.2 -C.sub.12 -alkyl, or mixtures of melamines I,(B) from 0.

Abstract: Cationic urea/formaldehyde resins are obtainable by condensing urea and formaldehyde in a molar ratio of from 1:1.5 to 1:3 in the presence of polymers which contain not less than 1 mol % of polymerized vinylamine units and have Fikentscher K values of from 5 to 300, in an amount of from 5 to 50 g per mole of urea in the end product, where the mixture is first a) precondensed at a pH of from 8 to 14, then acidified and b) condensed at a pH of from 1 to 5 until gel formation begins, c) then from 0.3 to 1.5 moles of formaldehyde are added per mole of urea used, d) post-condensation is carried out and e) the resin solution is subsequently neutralized. The resins thus obtained are used in papermaking as assistants for increasing the dry and wet strength of paper and result in less dulling of the whiteness of the paper.

Abstract: Provided are light-absorbing polymers which contain backbone unsaturations and which are produced by knoevenagel condensation and which are useful for imparting color and/or ultraviolet light screening properties to thermoplastic resins. The polymeric colorants or UV absorbers may be added during the formation of the uncolored thermoplastic polymer or melt or solution blended with other thermoplastic polymers.

Abstract: A condensation polymer, obtainable by condensation of a mixture containing, as chief components,(A) from 90 to 99.9% molar of a mixture substantially consisting of(a) from 30 to 99% molar of melamine and(b) from 1 to 70% molar of a substituted melamine of the general formula I ##STR1## in which X, X', and X" are selected from the group consisting of --NH.sub.2, --NHR, and --NRR', and only one or two of X, X', and X" denote(s) --NH.sub.2, and R and R' are selected from the group consisting of hydroxy-C.sub.2 -C.sub.10 -alkyl, hydroxy-C.sub.2 -C.sub.4 -alkyl-(oxa-C.sub.2 -C.sub.4 -alkyl).sub.n, where n is an integer from 1 to 5, and amino-C.sub.2 -C.sub.12 -alkyl, or mixtures of melamines I, and(B) from 0.1 to 10% molar, based on (A) and (B), of unsubstituted phenols or phenols substituted by radicals selected from the group consisting of C.sub.1 -C.sub.9 -alkyl and hydroxy, or of C.sub.1 -C.sub.

Abstract: A process for producing a resin is disclosed, comprising reacting (a) a polyalkylenepolyamine, (b) an alicyclic dibasic carboxylic acid and/or a reaction product having a free carboxyl group that is obtained by reacting an alicyclic dibasic carboxylic acid with a glycol, (c) a urea, and (d) an aldehyde and/or an alkylating agent. The resulting resin is useful as a wet strength agent to provide a paper coating composition having improved printability and printing effects.

Abstract: A process for producing a resin is disclosed, comprising reacting (a) a polyalkylenepolyamine, (b) an alicyclic dibasic carboxylic acid and/or a reaction product having a free carboxyl group that is obtained by reacting an alicyclic dibasic carboxylic acid with a glycol, (c) a urea, and (d) an aldehyde and/or an alkylating agent. The resulting resin is useful as a wet strength agent to provide a paper coating composition having improved printability and printing effects.

Abstract: Amino-plastic resins soluble in water of which the nitrogenous derivative is chosen from the group comprising urea, 1,3-dimethyl-urea, ethyleneurea, 4,5-dihydroxy-ethyleneurea or their mixtures and the aldehyde derivative is a mixture of from 1 to 99% by weight of glyoxal and from 99 to 1% by weight of glyoxal monoacetal of formula (RO).sub.2 CH--CHO; R=C.sub.1 -C.sub.4 alk, their ethers and their applications in particular with cellulosed fibre treatment.

Abstract: A low-formaldehyde binder consists essentially of(A) from 5 to 80% by weight of a water-soluble condensation product of carbonyl number 0-200 which has been prepared by alkaline condensation from 0.1 to 0.4 mole of an aliphatic or cycloaliphatic condensable ketone and 1 mole of formaldehyde, and(B) from 20 to 95% by weight of 4,5-dihydroxyimidazolidin-2-one and/or an unetherified, partially etherified or completely etherified condensation product thereof with an aliphatic monoaldehyde or dialdehyde.

Abstract: Polymers with conjugated double bonds having heterocyclic and/or carbocyclic rings or ring systems in which said rings or ring systems are linked with one another in pairs via a carbon atom as a bridge member. Polymers of the invention have, at least five of said ring or ring-systems. The polymers may be prepared by reacting at least one compound of the formula ##STR1## with at least one compound of the formulaH--R" --H (II)in whichX represents fluorine, chlorine, bromine, iodine, hydroxyl, sulfate radicals or radicals of the formula --OR, --SO.sub.3 F, --SO.sub.3 R or --NR.sub.2 ;X.sub.2 represents two radicals X, or an oxygen atom of a carbonyl group;R represents the same or different alkyl radicals having from 1 to 8 carbon atoms, phenyl and a hydrogen atom; andR" represents the same or different monocyclic or polycyclic (hetero) arylene radicals optionally substituted by hydrocarbon radicals having 1 to 8 carbon atoms.

Abstract: The formaldehyde emission in the thermoplastic processing of antioxidant containing oxymethylene copolymer molding compositions is reduced considerably if these molding compositions additionally contain on the surface or homogeneously mixed in a specifically defined formaldehyde binding material which contains in the molecule at least two 4,6-diamino-1,3,5-triazin-2-yl groups. In this way there are avoided deposits on the die and odor annoyance.

Abstract: Thermosettable prepolymers or resins are prepared by reacting (1) a pyrazine compound containing at least two substituent groups which have a hydrogen atom attached to a carbon atom which is attached to the ring such as tetramethylpyrazine, (2) a material containing at least two aromatic aldehyde groups, and (3) at least one of (a) a nitrogen containing aromatic heterocyclic compound containing at least one hydrogen atom attached to a carbon atom attached to the ring and a polymerizable unsaturated group such as 2-methyl-5-vinylpyridine or (b) an aldehyde containing at least one polymerizable unsaturated group such as 4-isopropenyl-1-cyclohexene-1-carboxaldehyde. These prepolymers or resins are curable to thermoset products having good mechanical and thermal properties by heat and pressure or by homopolymerization or copolymerization with N,N'-bis-imides such as 1,1'-(methylenedi-4,1-phenylene)-bismaleimide. The prepolymers are suitable for preparing composites.

Abstract: A process for the preparation of curable etherified aminoplast resins based on urea/aldehyde polycondensates, and the preparation of surface coating resins.Urea is first reacted with an .alpha.,.alpha.-dialkylaldehyde, as much as 50 mol % of which may be replaced by formaldehyde, in a molar ratio urea/aldehyde of about 1:2, at from 50.degree. to 120.degree. C., in the presence of an acid and in the presence or absence of an alcohol or of other organic solvents, and the 2-oxohexahydropyrimidine derivative obtained in this cyclocondensation is then condensed with formaldehyde in the presence of one or more alcohols and an acid.These aminoplast resins are useful as both acid-curable resins and as resins for baking finishes.

Abstract: Thermostable hydroxystyrylaza compounds are prepared by reacting methylated pyridines and/or pyrazines with one or more monohydroxy aromatic aldehydes having the ortho and para positions to the hydroxy group block with groups inert to condensation reactions. These compounds are useful to make unsaturated derivatives which can cure into high temperature resistant polymers and/or laminates without giving off condensation products.

Abstract: Styryl pyridine and styryl pyrazine cyanates are prepared by cyanating the reaction product of (A) a substituted pyridine and/or pyrazine with (B) a substituted aromatic aldehyde with the proviso that at least one of the components (A) or (B) contains a hydroxyl group which is susceptible to being cyanated. These cyanates can be homopolymerized or copolymerized with other materials to produce polymers having excellent high temperature resistance, good mechanical strength and excellent processability.

Abstract: Thermosettable prepolymers or resins are prepared by reacting a pyrazine containing at least two substituent groups which have a hydrogen atom attached to a carbon atom which is attached to the ring with a material containing at least two aromatic aldehyde groups. These prepolymers or resins are curable to thermoset products having good mechanical and thermal properties. Thermoset polymers having good mechanical and thermal properties are also prepared by homopolymerization in the presence of N,N'-bis-imides or copolymerization of these prepolymers with N,N'-bis-imides. The prepolymers are suitable for preparing composites.

Abstract: Alkenylphenylglycidyl ether capped styryl pyridines and styryl pyrazines are prepared by etherifying with an alkenylphenylglycidyl ether the reaction product of (A) a substituted pyridine and/or pyrazine with (B) a substituted aromatic aldehyde with the proviso that at least one of the components (A) or (B) contains a hydroxyl group which is susceptible to etherification by an alkenylphenylglycidyl ether. These alkenylphenylglycidyl ether capped styryl pyridines and pyrazines can be homopolymerized or copolymerized with other materials to produce polymers having excellent high temperature resistance, good mechanical strength and excellent processability and are used to make cured composites with heat resistant fibers that have applications in high temperature environments such as engine compartments and/or fire walls.

Abstract: Heat resistant thermosetting prepolymers are prepared by reacting one or more methylated pyridines or pyrazines with one or more hydroxy aromatic aldehydes. The total number of methyl groups on the pyridine or pyrazine can vary from 2 to 4. The prepolymers are cured to produce heat resistant polymers and laminates with conventional fibers such as carbon fibers.

Abstract: A composition of matter useful as a high solids coating is disclosed. The composition comprises at least one bishydroxymethyl tricyclo compound and at least one amino crosslinking agent.

Abstract: A composition of matter useful as a high solids coating is disclosed. The composition contains at least one cycloaliphatic diol and at least one methylolamino curing agent.

Abstract: Cyclic urea/glyoxal/polyol condensates are excellent formaldehyde-free crosslinking resins for cellulosic textile fabrics and insolubilizers for binders in paper coating compositions.

Abstract: There is disclosed a solid and water-insoluble condensation product of N,N'-ethyleneurea with formaldehyde, having the structure ##STR1## wherein n is an integer from 20 to 60 with a mean value of 41, and having an average number molecular weight M.sub.n ranging from 2000 to 6000. Said product, when added to a polymer in combination with an ammonium phosphate, results in the production of articles which are resistant to heat and to thermo-oxidation.

Abstract: Alkylated glyoxal/cyclic urea condensates are excellent formaldehyde-free crosslinking resins for textile fabrics.

Abstract: Polymerized methylol derivatives of 2,3,4,5-tetrahydropyrimidines and to uses thereof, particularly as corrosion inhibitors.

Abstract: Blends of a glyoxal/cyclic urea condensate or a partially or wholly alkylated derivative thereof and dimethylol dihydroxyethylene urea or a partially or wholly alkylated derivative thereof improve the properties of textile fabrics treated therewith and contain only small amounts of free formaldehyde.

Abstract: Alkylated glyoxal/cyclic urea condensates are excellent formaldehyde-free crosslinking resins for textile fabrics.

Abstract: Alkylated glyoxal/cyclic urea condensates are excellent formaldehyde-free crosslinking resins for textile fabrics.

Abstract: A composition is described which provides an improvement in the electrodeposition of zinc from aqueous alkaline plating baths and particularly from alkaline plating baths containing little or no cyanide. The new composition comprises the reaction product of one or more piperazines, at least one additional nitrogen-containing compound selected from the group consisting of ammonia or aliphatic acyclic compounds containing at least one primary amine group, formaldehyde, and an epihalohydrin or a glycerol halohydrin or mixtures thereof. Aqueous, alkaline zinc plating baths containing the additive compositions of the invention deposit a bright zinc coating over a wide range of current densities.

Abstract: A process for preparing a polyimine comprising reacting at least one dialdehyde with at least one diamine in a reaction medium of 100 to about 40 percent by volume of a phenolic compound of the formula, ##STR1## wherein X represents a hydrogen atom or a methyl group, and 0 to about 60 percent by volume of a liquid which is miscible with the phenolic compound.