Abstract: A heat-resistant heterocyclic polymer consisting of units of the general formula ##STR1## wherein R, R.sup.1 and X are as defined hereinbelow anda method for producing heat-resistant heterocyclic polymers, consisting in that, at a temperature of 90.degree. to 400.degree. C., there is conducted a reaction of polyfunctional nitrile-containing compounds with polyfunctional isocyanates.The proposed polymers are stable at temperatures from 300.degree. to 350.degree. C. Materials based thereon are capable of retaining their properties at a temperature of up to 400.degree. C. for long periods of time. The method is simple and can be effected without isolation, purification or drying the polymer, which allows combining the process of producing the polymer with that of producing a finished article.

Abstract: Trityl compounds wherein a triphenylmethyl group is attached to oxygen, divalent sulfur, trivalent nitrogen or a halogen are effective synergists for organic bromine flame retardants in polypropylene compositions.

Abstract: A resin stabilizer composition which essentially contains:(a) an organotin sulfur-containing compound, for example, organotin mercaptides, organotin mercaptoacids,organotin mercaptoacid esters, organotin sulfides, organothiostannoic acids and the like, and(b) an organic over-based complex of Group I or II-a metal bases, for example, barium phenate or sulfonate, an over-based calcium phenate or sulfonate or the like.These compositions remarkably contribute to the long term heat stability of vinyl halide resins. Furthermore, among other advantages, significant economies and synergistic resin heat stabilization are offered by these stabilizer compositions.

Abstract: Flexible polyvinyl chloride having improved flame retardancy and reduced smoke generating properties. The plastics are characterized in that they contain about from 0.01 to 0.2 parts, by wt., based on the iron content, of a high molecular weight ferrocene derivative and about 0.1 to 20 parts, by wt., of antimony oxide per 100 parts of polyvinyl chloride resin. A composition comprising the ferrocene derivative and antimony oxide useful for preparing the improved plastic is also disclosed.

Abstract: Glass filled thermoplastic polyamide polymers such as nylon 6/6 are rendered fire retardant by the addition of an effective amount of a tris-(3-hydroxyalkyl) phosphine oxide such as tris-(3-methyl-3-hydroxypropyl) phosphine oxide.

Abstract: Spandex fiber made from a segmented polyurethane polymer is provided with improved resistance to chlorine-induced degradation, by the inclusion of finely divided zinc oxide particles having a purity of at least 99.4% dispersed in the fiber.

Abstract: A method of preparing phosphor suspensions for coating fluorescent lamps wherein the temporary organic binder is an association compound of purified carboxy methyl cellulose and polyethylene oxide in such proportions as to avoid the gelation caused by ionizable phosphors releasing multivalent cations.

Abstract: The present invention relates to a process for working up alkaline two-phase mixtures which have been obtained in the synthesis of polycarbonates by the two-phase boundary process, characterized in that for the separation of the alkaline two-phase mixture into an organic phase and an aqueous phase, the mixture is supplied with shearing energy and/or added are one or more cationic emulsifying agents and/or dispersing agents and/or in that, for the separation of the acidified two-phase mixture into an organic phase and an aqueous phase, the mixture is supplied with shearing energy and/or added are one or more cationic emulsifying agents and/or dispersing agents and/or in that the organic phase which was separated off after the acidification is washed with water to which one or more water-soluble, organic anionic compounds have been added.

Abstract: Stabilized aqueous dispersions of vinyl chloride polymer having at least 25% by weight of vinyl chloride units in the polymer and having K values of between 20 and 80, having added as a stabilizing agent 0.3-6% by weight of substances selected from the group of compounds according to the general formula ##STR1## wherein n has the meaning of from 0 to 2 or water-soluble salts thereof. The invention also relates to a process of producing the stabilized products by adding the stabilizing agent after polymerization in aqueous dispersion, and to the use of the stabilized dispersions in binders, coating compositions, paints, adhesives, textile auxiliaries and paper-coating compositions.

Abstract: Film-forming formulations comprising starch, ethylene acrylic acid copolymer, and optionally polyethylene, can be blown into films upon neutralization of a portion of the copolymer acid functionality. The resultant biodegradable films have potential application as agricultural mulch, garbage bags, and various types of packaging.

Abstract: Shelf-stable liquid antimony stabilizer compositions for vinyl halide resin compositions comprise a liquid antimony organic sulfur- and/or oxygen-containing compound, such as antimony tris-(isooctyl thioglycolate), and a stabilizing amount of an acidic organic compound that may be a mercaptoacid ester, mercaptan, mercaptoacid, mercaptoalcohol, monocarboxylic acid, or a mixture thereof.

Abstract: Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another denote alkyl, cycloalkyl or aralkyl, R.sub.3 denotes hydrogen or, conjointly with R.sub.1, denotes tetramethylene, R.sub.4 denotes hydrogen or lower alkyl or, conjointly with R.sub.2, denotes tetramethylene, R.sub.5 denotes hydrogen, alkyl, aralkyl, acyloxyalkyl, oxaalkyl or phenyl, R.sub.6 denotes hydrogen, alkyl, phenyl or the group ##STR2## or, conjointly with R.sub.5, denotes alkylene, R.sub.7 denotes hydrogen, alkyl, phenyl, benzyl or alkylphenyl or, conjointly with R.sub.5 or R.sub.6, denotes alkylene or, conjointly with R.sub.5 and R.sub.6, denotes alkanetriyl, R.sub.5, R.sub.6 and R.sub.7 together containing at least one carbon atom, Y denotes --O-- or --NH--, P denotes 1, 2, 3 or 4 and A denotes hydrogen or a group which is derived from an organic or inorganic oxygen acid A-(OH).sub.p, are suitable for stabilizing organic material against thermo-oxidative degradation.

Abstract: A melt-molded film of a wholly aromatic polyester, said film having in its plane two perpendicularly crossing directions in each of which the Young's modulus and strength of the film at 25.degree. C. are at least about 200 kg/mm.sup.2 and at least about 5 kg/mm.sup.2 respectively, the product of the Young's moduli of the film in the two directions being at least 8.times.10.sup.4 (kg/mm.sup.2).sup.2, and said wholly aromatic polyester being substantially linear, having a melt viscosity at about its melting point of at least about 10000 poises, and being composed substantially of recurring units derived from p-hydroxybenzoic acid, recurring units derived from a m- or p-oriented aromatic dicarboxylic acid and recurring units derived from a m- or p-oriented aromatic dihydroxy compound, the proportion of said recurring units derived from p-hydroxybenzoic acid being about 30 to about 70 mole % based on the entire recurring units.

Abstract: This invention relates to a unique, efficient, concentrated synthetic thickener composition comprising a high molecular weight carboxyvinyl polymer, hydrocarbon solvent and cationic surfactant, a thickened concentrate formed by alkaline neutralization of said composition, an aqueous paste (cut clear) formed by dilution of said concentrate, textile print pastes containing said concentrate, and a method of thickening an aqueous system.

Abstract: A resin stabilizer composition which essentially contains:(a) an organotin sulfur-containing compound, for example, organotin mercaptides, organotin mercaptoacids, organotin mercaptoacid esters, organotin sulfides, organothiostannoic acids and the like, and(b) a metal compound from one of the groups of(1) an alkali metal bisulfite, carbonate, hydroxide, oxide, thiocarbonate bicarbonate, or metabisulfite, and(2) an alkaline earth metal oxide or hydroxide.These compositions remarkably contribute to the long term heat stability of vinyl halide resins. Furthermore, among other advantages, significant economies and synergistic resin heat stabilization are offered by these stabilizer compositions.

Abstract: There is disclosed a method for the stabilization of polyester resins by incorporating in the resins certain types of 4-mercaptophenol derivatives.

Abstract: Pharmaceutical coatings in the form of aqueous dispersion of a water insoluble polymer prepared by dissolving the polymer in a water immiscible organic solvent, emulsifying the organic solution in water, optionally with the aid of additives, and stripping the organic solvent from the system to provide a colloidal, or near colloidal, aqueous dispersion or latex of small, even sized polymeric particles which are applied to pharmaceutical dosages from highly loaded latices. The latexes, which display resistance to bacterial and mold growth and, when combined with selected additives, provides convenient, attractive coating compositions which afford excellent protection and varied release properties to pharmaceutical dosages.

Abstract: An asbestos-free gasket forming composition is disclosed. The composition is preferably produced by removing water from an aqueous furnish composition comprising phenolic fibers, aromatic polyamide fibers, an inorganic or cork filler, a synthetic rubber binder, and a water insoluble hydroxide produced from a soluble salt selected from the group consisting of aluminum salts, ferric salts and stannic salts, by reaction with a sufficient amount of an alkaline hydroxide to provide a furnish pH within the range of from about 6 to about 10, and preferably of from about 7 to 8.

Abstract: Polyurethane formulations that are resistant to fouling by marine organisms when exposed to sea water are prepared by mixing tetrachloroisophthalonitrile with a polyurethane. Any of the known polyurethanes may be used and liquid castable compositions are particularly useful.

Abstract: A smoke suppressed rigid or plasticized polyvinyl chloride polymer composition contains a polyvinyl chloride polymer and a small but effective amount of a smoke suppressant consisting essentially of a mixture of Zn.sub.3 Mo.sub.2 O.sub.9 .multidot.H.sub.2 O and ZnHPO.sub.3, in an atomic ratio of Mo to P of about 0.5:1 to about 2.0:1, to impart smoke suppression to the polymer composition.