Abstract: The present invention relates to a constructional material which is stable in storage and which is kept under moisture-free conditions and which comprises a substrate and a reactive one-component system which hardens on exposure to air by reaction with moisture. The present invention also relates to a process for the production of a constructional material which is stable in storage.

Abstract: A thermoplastic aromatic polycarbonate composition is provided comprising polycarbonate resin and an additive amount of a linear copolymer of a maleic acid anhydride or its imidized derivative and an .alpha.-olefin.

Abstract: The invention relates to a new process for the shatterproof coating of glass surfaces by coating the surfaces with a coating composition based on a two-component system reacting fully to form a polyurethane, the glass surfaces to be coated being coated before application of the coating composition with a physically drying priming lacquer containing a silane adhesion promoter and a catalyst which accelerates hardening of the coating composition and, as binder, a polyurethane polyurea which has a linear molecular structure and which is soluble in lacquer solvents.

Abstract: The present invention relates to a process for the preparation of stable, colloidal, aqueous dispersions of cross-linked urea-urethanes which comprises reacting(a) an aqueously dispersed, substantially linear, isocyanate-terminated prepolymer having a molecular weight of up to about 25,000 and containing(i) about 0 to 120 milliequivalents of ionic groups per 100 grams of prepolymer, and(ii) about 0.35 to 10% by weight, based on the weight of the prepolymer, of lateral and/or terminal, hydrophilic ethylene oxide units wherein components (i) and (ii) are present in an amount sufficient to provide a stable dispersion of the prepolymer in the aqueous medium, with(b) polyfunctional amine chain extenders having an average functionality between about 2.2 and 6.0.The present invention additionally relates to the aqueous dispersions produced by the above process and to the films, coatings or adhesives produced from these dispersions.

Abstract: Polycarbonate compositions comprising an aromatic polycarbonate resin, wherein dispersed are starch particulates, are particularly suitable for the preparation of films having a low coefficient of static friction, high light transmission and are virtually free of haze.

Abstract: The present invention is concerned with a new class of compounds prepared by reacting cyclic aminals of the formula ##STR1## with polyisocyanates of the formula R.sub.5 (NCO).sub.m+n to yield ##STR2## and with this process for obtaining said compounds, as well as the use of such compounds in polyurethane chemistry. If such compounds are free of isocyanates (n=0) they are useful as latent cross-linkers or hardeners activatable by heat or moisture. If such compounds carry free isocyanate groups (n=1 or 2) there are useful as synthetic resin precursors. In the above formulaem represents an integer of from 1 to 3, andn represents 0, 1 or 2, and the sum of m+n is 2 or 3,R.sub.1 represents an aliphatic hydrocarbon group which is optionally cyano-substituted and which has from 1 to 6 carbon atoms, a cycloaliphatic hydrocarbon group having from 5-10 carbon atoms or an araliphatic hydrocarbon group having from 7-10 carbon atoms;R.sub.

Abstract: This disclosure is concerned with a process for molding polyethylene terephthalate at a reduced mold temperature, i.e., less than 120.degree. C., and still obtaining crystalline parts by incorporating a small amount of a two phase polyacrylate comprised of a cross-linked elastomeric first phase to which a rigid thermoplastic second phase has been grafted. It is also concerned with a glass reinforced polyethylene terephthalate especially suitable for molding into colder molds which contain this two phase polyacrylate.

Abstract: The present invention relates to a process for the isolation of polycarbonates containing 18 to 45 mol % of structural units consisting of sulphone-bisphenols, characterized in that the sulphone-bisphenols are subjected to a polycondensation reaction with oligocarbonates containing chloroformic acid ester end groups, the phases are separated, the organic phase is purified and the sulphone-bisphenol polycarbonates are isolated.

Abstract: This invention relates to coating agents and dressing agents for leather and leather substitutes with improved resistance to plasticizer migration, greater hardness and folding strength, a dry hand and resistance to aqueous alcoholic solutions, based on linear or only slightly branched thermoplastic polyurethane ureas built up from the following components(A) at least two macrodiols in a molar ratio of from about 1:6 to 6:1, one of which macrodiols(1) has an average molecular weight of from about 254 to 650 and contains at least one benzene, cyclohexane or cyclohexene ring, while(2) the second macrodiol has an average molecular weight in the range of from about 1200 to 3000 but has at least three times the molecular weight of A/l, and which contain(B) from about 0.

Abstract: The present invention relates to the use of soluble electrolytes as additive to aqueous dispersions of self-dispersible anionically and/or nonionically hydrophilically modified synthetic materials for the purpose of improving the water resistance and/or blocking resistance of sheet products produced from the dispersions.

Abstract: The new thermoplastic copolyester carbonates which are based on polybutylene glycols and hexahydrophthalic acid or trimethyladipic acid, as well as admixtures of copolyester carbonates of this type with known polycarbonates are suitable for thermoplastic moulding compositions, particularly where good stability to solvents, such as petrol, is required.

Abstract: A thermoplastic aromatic copolycarbonate resin is provided having an enhanced flame retardance and characterized in that its molecular structure comprises polycondensation residues of ##STR1## wherein R and R' independently are organic radicals.

Abstract: This disclosure is concerned with glass reinforced polyethylene terephthalate compositions which have improved heat distortion temperatures when molded into cold molds due to the incorporation of an organic imide containing compound having a melting point in excess of 240.degree. C. These compositions have enhanced crystallization velocities which allows them to be molded into colder molds with faster cycle times than is conventional for polyethylene terephthalate compositions and still obtain crystalline parts with optimum properties including heat distortion temperatures. Mold temperatures of less than 120.degree. C. may be utilized without impairment of these properties.

Abstract: An electrically programmable memory cell comprises two terminals, a unidirectional and/or controllable semiconductor device having anode and cathode regions and a programmable resistor, said anode and cathode regions of the semiconductor device and the programmable resistor being connected in series between the terminals. The programmable resistor comprises a mixture of finely divided metallic material dispersed in a thermoplastic resin. The programmable resistor is initially substantially nonconductive (having a resistivity, for example, in excess of 1 mega ohms per cubic cm). By forcing a sufficient current through the terminals for a period of time, the resistance of the programmable resistor drops drastically to the extent that it may be considered a conductor (having a resistivity, for example, of less than 100 ohms per cubic cm).

Abstract: This invention relates to a process for increasing the abrasion and water resistance of metallized cloth by applying a coating containing free isocyanate groups and, optionally by an additional coating which process renders the textile materials suitable for use in the production of objects which can be detected by radar.

Abstract: The present invention is concerned with modifying the crystal form of the anthraquinone of the formula ##STR1## so as to render it more suitable for disperse dyeing and to improve its performance in thermosol dyeing. The modification is effected by heating the dyestuff at elevated temperatures, preferably between 90.degree. and 185.degree. C. until the Debye-Scherrer strong intensity spacings appear at 6.5A.degree., 18.1A.degree. and 20.6A.degree.. It is also concerned with disperse and thermosol dyeing processes utilizing this crystal modification and with aqueous dispersions of this crystal modification.

Abstract: The present invention is directed to aqueous dispersions having a solid content of at least about 10% by weight of polymers containing from about 0.1 to 6% by weight of incorporated sulphonate groups, characterized in that cations of at least divalent metals, silver or monovalent copper are present in the dispersions as counterions to the chemically-incorporated sulphonate anions to at least about 80 equivalent percent, based on the total quantity of the cations present.Another object of this invention is a process for the production of such aqueous dispersions which is characterized in that aqueous dispersions having a solid content of at least about 10% by weight, of polymers containing from about 0.1 to 6% of incorporated sulphonate groups, in which alkali metal cations or monovalent ammonium cations are present as counterons, are treated with a cation exchanger which is charged with cations of the above-mentioned type.

Abstract: The present invention is directed to a process for sealing fissures and leaks in construction by pressing sealing agents comprising liquid compounds having free isocyanate groups, and optionally auxiliary aids and additives, into the constructions to be sealed, characterized in that sealing agents which are substantially free of solvent are used which contain as compounds having free isocyanate groups reaction products of polyhydroxy polyethers with polyisocyanate mixtures of the diphenyl methane series having at least about 20% by weight, based on the weight of the polyisocyanate component, of 2,4'-diisocyanato diphenyl methane, in an NCO/OH equivalent ratio of from about 2:1 to 15:1. The present invention is also directed to the novel sealing agents used in this process.

Abstract: A mineral-filled thermoplastic composition comprising polycarbonate, poly(alkylene) terephthalate and polyanhydride resin characterized in an improved impact is disclosed.

Abstract: The present invention is directed to an organic polyurethane composition having a solids content of about 10 to 100 weight percent which comprises(1) isocyanate-terminated prepolymers which are prepared by reacting reaction products of the phosgenation of aniline-formaldehyde condensates containing specific ratios of isomers and homologues with polyether polyols containing at least two hydroxyl groups and at least one tertiary nitrogen atom and, optionally, an additional polyol which does not contain a tertiary nitrogen atom and optionally,(2) a monoisocyanate comprising a member selected from para-toluenesulfonyl isocyanate and the reaction product of 2,4- or 2,6-toluene diisocyanate or mixtures thereof with specific monoalcohols.The present invention is also directed to the coatings produced from the polyurethane compositions, optionally containing pigments.