Abstract: A process for producing oxymethylene copolymers and terpolymers is disclosed which involves the non-linear addition of gaseous formaldehyde to a cyclic ether having at least two adjacent carbon atoms (1) and, in the case of a terpolymer, to a mixture of at least one (1) and one monoethylenically unsaturated aliphatic diol formal having at least four carbon atoms in its main chain (2), or to a mixture of (1) with a (2), in the presence of a polymerization initiator at a rate controlled so as to conform to a rate determined by kinetic equations that describe the rate of decomposition of trioxane to formaldehyde during conventional copolymerization of trioxane with a cyclic ether. The process and kinetic equations of the invention are applicable to batch reactions, single stream continuous reactions and dual stream continuous reactions.

Abstract: Cationic polymerization of trioxane and a mixture of ester derivatives of .alpha.,.alpha.- and .alpha.,.beta.-isomers of glycerol formal yields acetal terpolymers having pendant functional groups (i.e., ester groups, or hydroxyl groups obtained by hydrolyzing ester groups, pendent from the polymer's backbone). The glycerol formal monomers employed in this invention may include functional groups selected from ester moieties which are protected from, and thus survive, the polymerization process with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block polymers and/or to chemically bind modifiers to the acetal terpolymer backbone, for example.

Abstract: Cationic copolymerization of trioxane and 1,2,6-hexanetriol formal (HTF) or its ester derivatives yields acetal copolymers having pendant functional groups. The HTF formal or ester derivatives of HTF may therefore include functional groups selected from hydroxyl or ester moieties which are protected, and thus survive, the copolymerization with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block copolymers and/or to chemically bind modifiers to the acetal copolymer backbone, for example.

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: Acetal polymer having a high degree of polymerization is obtained using a catalyst of a heteropoly acid or an acid salt thereof in a small amount. The catalyst is represented by formula:H.sub.x [M.sub.m .multidot.M'.sub.n O.sub.l ]yH.sub.2 O (1)whereinM: a central element constituted of at least one member selected from among P, B, Si, Ge, Sn, As, Sb, U, Mn, Re, Cu, Ni, Ti, Co, Fe, Cr, Th and Ce,M': at least one ligand element selected from among W, Mo, V and Nb, m: 1 to 10, n: 6 to 40, l: 10 to 100, x: an integer of 1 or above, and y: 0 to 50.

Abstract: Acetal polymer and copolymer are prepared by polymerizing formaldehyde or its cyclic oligomer as a principal monomer, or copolymerizing the principal monomer with a comonomer copolymerizable therewith, using an isopoly acid or an acid salt thereof as a polymerization catalyst.

Abstract: A polyacetal resin composition is prepared by melt-kneading a polyacetal resin (A) (99 to 40 wt. %) with a thermoplastic polyurethane (B) (1 to 60 wt. %) in the presence of a polyisocyanate compound, a polyisothiocyanate compound or a modification thereof (C) in an amount of 0.1 to 10 wt. % based on the total of A and B.

Abstract: A polyquinoxaline polymer is prepared by self condensation of a monomer having both a 1,2-diketone and a 1,2-primary diamine in the molecule. The resultant polymers can be used as dielectric films, adhesions, varnishes and membranes.

Abstract: A water-based coating composition comprising as the first component, a mixture of a polyaldehyde chosen from the group consisting of glyoxal, glutaraldehyde and derivatives of glyoxal and glutaraldehyde, and a water dispersible component chosen from the group consisting of epoxy resin emulsions which can be emulsified in water, synthetic latexes stable at about pH 7 or less, low molecular weight resin emulsions, epoxy ester emulsions, water emulsified alkyds, and cationic, anionic and non-ionic asphalt emulsions and, as the second component, the non-gel reaction product of (I) urea-formaldehyde ether monomer, urea-formaldehyde phenol monomer, urea-nonylphenol formaldehyde monomer, thiourea-formaldehyde ether monomer, melamine formaldehyde ether monomer hexamethoxymethyl melamine, with (II) a polyamine chosen from a group consisting of primary and secondary amines and/or a monoamine, combined with (III) a hydroxide or oxide of calcium, strontium or barium.

Abstract: A tanning assistant useful in particular for tanning in combination with aluminum tanning agents is obtained by condensing melamine with glyoxal and/or glyoxylic acid and optionally with an aromatic compound which has a phenolic hydroxyl group or optionally with a condensable nitrogen compound.

Abstract: Thermotropic copolyazomethines having a mesophase temperature range lying within a desired range of values are obtained by copolymerizing terephthalic aldehyde with at least two different 1,n-bis(4-aminophenoxy)alkanes.Such copolyazomethines are particularly useful as reinforcing materials for the usual thermoplastic polymers, such as polycarbonate, polybutyleneterephthalate, polyethyleneterephthalate and polyamides.

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: Polyacetals obtainable by reaction of(a) a dialdehyde of the formulaOHC--A.sub.n --CHOwhereA=C.sub.1 -C.sub.4 -alkylene or ##STR1## and n is 0 or 1, is reacted with(b) a polycarboxylic acid of 5 to 7 carbon atoms which contains not less than 3 OH groups,in a molar ratio (a):(b) of 1:0.25 to 4 in an aqueous medium in the presence of an acid catalyst, are used as additives in washing agents and as complexing agents for heavy metal ions.

Abstract: A therapeutic composition comprising a therapeutic macromolecular agent incorporated in cross-linked polyacetal.

Abstract: Homopolymers or copolymers of organometallic, end-capped polyphthalaldehydes containing the repeating unit of formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently of the other hydrogen, halogen, cyano, nitro, carboxyl, hydroxyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio or C.sub.1 -C.sub.4 alkoxycarbonyl, and at least one of the substituents R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are a group --Q(R.sup.5).sub.3 or --Q(R.sup.6).sub.3, where Q is Si, Sn, Ge, CH.sub.2 --Si or O--Si, R.sup.5 is C.sub.1 -C.sub.12 alkyl and R.sup.6 is C.sub.6 -C.sub.10 aryl, are suitable for producing dry-developed, plasma-resistant photoresists required for the production of structured images, especially for microelectronics.

Abstract: Disclosed is an alicylic end-capping agent for a heterocyclic compound, which is represented by the formula [I]: ##STR1## wherein X is CO, O, S, CH.sub.2 or substituted CH.sub.2, Y.sub.1 -Y.sub.6 are halo, H, NO.sub.2, aryl, alkaryl, arylalkyl or alkyl ether, and Z is ##STR2## (Q.sub.1 is --NH.sub.2, --SH, --OH or ##STR3## (Q.sub.2 is H, or monovalent aliphatic or amomatic group). Also disclosed is an addition-curable quinoxaline resin oligomer having the above-mentioned alicylic end-capping agents at both terminals of oligomer. This oligomer is useful especially for an intermediate material for a fiber-reinforced composite.

Abstract: The present invention provides metal compounds of acid group-containing condensation products or co-condensation products of ketones and aldehydes, obtainable by the reaction of acid group-containing ketone-aldehyde condensation products and/or co-condensation products with mono- or polyvalent metal compounds and/or metal complex compounds of metals of Groups IIIA to VIIIA and/or IB to VB of the Periodic System.The present invention also provides processes for the production of these metal compounds, which can be used as thickening agents, surface-active agents, emulsifiers, dispersion agents and/or liquefying agents, especially in aqueous systems.

Abstract: Polyazomethines having a high electrical conductivity obtained by polycondensation reaction of bicarbonyl compounds with aromatic diamines of formula: H.sub.2 N--Ar--CH.sub.2 --Ar--NH.sub.2, in which Ar is an aryl group optionally substituted, and by subsequent oxidation capable of transforming at least in part, the methylene group of the amine into a carbonyl group.The present invention relates to new electrically conductive polymers belonging to the class of the polyazomethines having high conductivity values, and to the process for preparing the same.

Abstract: Textile treating agent for imparting crease resistance is made by mixing 1 mol glyoxal, 2 mols formaldehyde, 1 mol urea and 1.5 mol ethylene glycol and reacting the mixture first at pH 6 to 7 at 60.degree. C. and then at pH 3 at 60.degree.. The product is found to have more stable formaldehyde release properties in textile treating baths as pH of the bath is varied in the range from about 3.0 to about 4.5.

Abstract: The object of the present invention are new thermoset resins having quickened curing, a process for their preparation, and their applications. The resins according to the invention consist, at least in part, of the products resulting from the polycondensation of one or more pyridine derivatives containing at least two methyl groups in the 2, 4 or 6 positions, with one or more aromatic dialdehydes, and the addition of one or more additives consisting of phenol compounds. These resins are used to the fabrication of composite materials.

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: Thermoplastic or thermosettable products are prepared by reacting a heterocyclic compound containing at least one nitrogen atom and at least two pendant groups containing a reactive hydrogen atom attached to a carbon atom which is attached to the aromatic heterocyclic ring such as 2,4,6-trimethylpyridine or 2,3,5,6-tetramethylpyrazine with an aldehyde having a hydrogen atom attached to a carbon atom adjacent to the carbonyl group such as phenylacetaldehyde. Also, heat resistant thermoplastic or thermosettable products are prepared by reacting the above product with either a hydroxy aromatic monoaldehyde such as 4-hydroxybenzaldehyde, aromatic dialdehyde such as terephthaldicarboxaldehyde or mixture thereof. Many of these products exhibit bulk conductive properties when doped with a dopant (doping agent) such as antimony pentafluoride.

Abstract: An improved process is provided for producing polymeric acetal carboxylate salts useful as detergent builders. The process comprises polymerization of an alkyl glyoxylate, optionally with one or more comonomers; addition of stabilizing endgroups; and saponification of the polymeric ester to produce the polymeric acetal carboxylate salts. Active yield is improved by reducing the number of polymer chains with unstable temporary endcaps entering the saponification step.

Abstract: Textile treating agent for imparting crease resistance is made by mixing 1 mol glyoxal, 2 mols formaldehyde, 1 mol urea and 1.5 mol ethylene glycol and reacting the mixture first at pH 6 to 7 at 60.degree. C. and then at pH 3 at 60.degree.. The product is found to have more stable formaldehyde release properties in textile treating baths as pH of the bath is varied in the range from about 3.0 to about 4.5.

Abstract: Radiation-curable compositions comprising an ester of an ethylenically unsaturated acid and a polyhydric alcohol and an oxopropyl isocyanurate formed by the addition of from 2 to 3 moles of acrolein to 1 mole of isocyanuric acid. The compositions are useful as coatings, printing inks, adhesives and the like.

Abstract: The object of the invention are new thermoset polymers and prepolymers, a process for their preparation, and their uses. The new thermoset prepolymers consist, at least in part, of the polycondensation products of one or more pyridine derivatives containing at least two activated methyl groups with one or more aromatic monoaldehydes containing at least one hydroxyl group. These prepolymers are used to prepare composite materials, in particular laminates, that can be used at high temperatures.

Abstract: Heat resistant thermosetting prepolymers are prepared by reacting one or more methylated pyridines or pyrazines with one or more aromatic dialdehydes, and isopropenyl phenols. The prepolymers can be further reacted with bismaleimides to make prepolymers with lower cure temperatures and faster cure rates. 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 novel cationic aminoplastic water-dispersible resin based on melamine, formaldehyde and glyoxal salified by a mineral or organic protonic acid, or by a mixture of such acids, selected from the group comprising hydrochloric, nitric, orthophosphoric, acetic, formic acids; it contains molar ratios, for 1 mole of melamine, of 2 to 4 moles of formaldehyde, 0.1 to 3 moles of glyoxal and 0.5 to 1 mole of mineral or organic protonic acid, or the equivalent quantity of a mixture thereof.

Abstract: An improvement in a process for the preparation of neutralized urea aldehyde polmeric dispersions by acid catalyzed reaction of urea with formaldehyde plus a higher aldehyde having from two to four carbon atoms wherein the improvement comprises reacting urea with formaldehyde and a polyfunctional aldehyde selected from the group consisting of a dialdehyde of from 2 to 5 carbon atoms or a polymer of formaldehyde such as a hydroxyaldehyde or polysaccharide which has a reactive, reducible aldehyde group wherein the mole ratio of formaldehyde to the polyfunctional aldehyde is at least 3:1. The products are useful as long term, sprayable fertilizers, especially for grasses.

Abstract: A highly efficient formaldehyde-free coating composition insolubilizer is prepared by reacting about 3 moles of glyoxal with 1 mole of urea resulting in a formation of a low molecular weight oligomer in a yield of 95-96%. The molar ratio of glyoxal to urea is very critical in obtaining the highest efficiency and is kept within narrow limits. The coating compositions of the present invention possess 2 till 4 times higher wet-rub resistance than the prior art compositions.

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: The invention provides a polycondensation product of(a) sulfamic acid (H.sub.2 N--SO.sub.3 H) and/or at least one N-substituted organic derivative of the sulfamic acid as such or in the form of their salts,(b) formaldehyde and/or glyoxal(c) melamine and/or at least one phenolic compound.This polycondensation product may be used as at least one component in a material for construction.

Abstract: Heat-curable compositions comprising an ester of an ethylenically unsaturated acid and a polyhydric alcohol, an oxopropyl isocyanurate formed by the addition of from 2 to 3 moles of acrolein to 1 mole of isocyanuric acid and a free radical or ionic initiator. The compositions are useful as coatings, adhesives and the like.

Abstract: Amino-formaldehyde products with activated carboxylic ester groups cross-link compounds containing pendant primary or secondary amine groups.This is a continuation, of application Ser. No. 232,455, filed Feb. 9, 1981, which is a continuation of Ser. No. 128,613, filed 3/10/80, which is a division of Ser. No. 32,982, filed 4/25/79, which is a continuation-in-part of Ser. No. 926,762, filed 7/21/78, all now abandoned.

Abstract: A formaldehyde-free adhesive system for the manufacture of particleboard comprises the reaction product of a cyclic urea and glyoxal in an equivalent ratio of about 1.1-1.5:1.

Abstract: Amino-formaldehyde products with activated carboxylic ester groups cross-link compounds containing pendant primary or secondary amine groups.

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: Binders for foundry core sands and the like comprising furfuryl alcohol and an aromatic dialdehyde and optionally an aromatic alcohol.

Abstract: Oxalyl compounds and polyalkylene polyamine derivatives of ethylene diamine and higher homolog polyamines are reacted to form a reaction product. This product is useful as an antifouling agent in the water systems of boiler and scrubbers, and particularly the quenching waters of blast furnaces.

Abstract: A polymer having the average structure: ##STR1## wherein Y is a moiety containing 1 to about 20 carbon atoms randomly distributed along the polymer chain derived from a comonomer selected from the group consisting of aldehydes and epoxy compounds; p is 0 or 1; the product of q and n averages at least 4; R.sup.1 and R.sup.2 are individually any chemically stable group which stabilizes the polymer against rapid depolymerization in alkaline solution; and Z is a mixture of H and members selected from the group consisting of alkali metals, ammonium and alkanol amine groups having from 1 to about 4 carbon atoms, is useful for the reversible deflocculation of clay slurries. In the preferred embodiments, p is 0 to provide a homopolymer, the product of q and n averages between about 10 and about 200, and Z is a mixture containing at least 1 percent H, the remainder being alkali metal, e.g., sodium.

Abstract: The alkali metal, ammonium and alkanol amine salts of acetal carboxylate polymers are known to be stable detergent builders and chelating agents which depolymerize in acid media making the polymer fragments more readily biodegradable in waste streams. Now, according to the present invention, the hydrolytic stability of an acetal carboxylate polymer can be controlled by bringing together under polymerization conditions an ester of glyoxylic acid and a polymerization initiator and adding to the termini of the resulting polymer end groups having substituents which are selected to be more electron withdrawing as the desired hydrolytic stability increases.

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: Process for the production of formaldehyde-free finishing agents for textiles containing or consisting of cellulose which is based on the reaction of urea or symmetrically disubstituted urea with glyoxal in the presence of buffer salts and alcohols at a pH of below 7, buffered mixtures of 4,5-hydroxyethyleneureas or N,N'-disubstituted 4,5-dihydroxyethyleneureas partially etherified in 4- and 5-positions being formed.

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: Disclosed is a water-insoluble addition copolymer of an ethylenically unsaturated unsubstituted amide and at least one other ethylenically unsaturated monomer comprising sufficient amide groups mono-functionally bonded to a polyaldehyde to render the copolymer thermosettable. The copolymer is adapted for use as or for formulation in a binder. Such a binder is readily made from a copolymer latex and is useful in processes for the preparation of products such as nonwoven fabrics and bonded papers.

Abstract: Suspension polymerization of aqueous glutaraldehyde in basic conditions in presence of surfactants such as isobutoxy acrylamide copolymers and/or cross-linking agents yield cross-linked, water insoluble glutaraldehyde polymer microspheres ranging in size from 200 A to 10.mu.. Addition of fluorochromes, e.g., FITC, during polymerization yields microspheres of high fluorescent intensity and addition of a suspension of metal containing particles such as Fe.sub.3 O.sub.4 during polymerization yields magnetic microspheres. Immunopolyglutaraldehyde microspheres can be obtained by interacting the polyglutaraldehyde microspheres with antibodies. The immunomicrospheres were used to label and separate cell subpopulations. The labeling specificity is considerably improved by increasing the amount of isobutoxy polyacrylamide incorporated in the microspheres.

Abstract: The invention pertains to thermosetting powder paint compositions adapted to fuse and thermoset upon exposure to heat. The powder paint is based upon a one-component, self-curing polymeric binder comprising a thermosetting glycoluril copolymer containing methylol or alkoxy methyl glycoluril groups adapted to cross-link with reactive hydroxyl, carboxyl, or amide groups on the copolymer. The copolymer is produced by partial condensation of tetramethylol or tetra-alkoxy methyl glycoluril with units containing reactive hydroxyls, carboxyls, or amide groups.

Abstract: Poly(aldehyde amino silicate) foams are produced by mixing an amino compound, an aldehyde, a silicon oxide compound and a blowing agent; then a curing agent is added, thereby producing a rigid, porous product.