Abstract: The present invention is directed to derivatives of azoles, their preparation and their use as chemical blowing agents for thermoplastic molding compositions. The agents of the invention are characterized in their improved compatibility with the resin wherein they are incorporated.

Abstract: The present invention is directed to an aromatic copolycarbonate molding composition comprising the reaction product of an aromatic diphenol, an aromatic sulfonyl diphenol, a dihydroxybiphenyl and a carbonic acid derivative, said composition being characterized by its improved heat deflection temperature and critical thickness.

Abstract: The present invention is directed to a composition comprising:(a) a dispersion of a polyurea and/or polyhydrazodicarbonamide in a relatively high molecular weight organic compound containing at least two hydroxyl groups, wherein the concentration of the polyurea and/or polyhydrazodicarbonamide is from 1 to 40% by weight of the dispersion,(b) from 2 to 10% by weight of water based on the weight of component (a), and(c) from 3 to 10% by weight based on the weight of components (a) and (b), of a sulphonate diol corresponding to the formula: ##STR1## wherein A and B may be the same or different and represent a difunctional aliphatic hydrocarbon radical containing from 1 to 6 carbon atoms;R represents hydrogen, an aliphatic hydrocarbon radical containing from 1 to 4 carbon atoms, or a phenyl radical;X.sup..sym. represents an alkali metal cation, or an ammonium group which may be substituted;n and m represent the same or different numbers of from 1 to 30;o and p each represent 0 or 1; andq represents 0, 1 or 2.

Abstract: Process for the conditioning of a pigment by applying shear to a crude pigment in the presence of a liquid conditioning agent selected from the group consisting of corn syrup, corn syrup solids and molasses and optionally in the presence of a viscosity modifying agent, in a medium which is essentially free from an added inorganic salt.

Abstract: The invention is directed to a process for the production of an isocyanate which is both stable and liquid at room temperature comprising reacting pure diphenylmethane diisocyanate or crude diphenylmethane diisocyanate with a diol of the formula, ##STR1## wherein R is a C.sub.2 to a C.sub.5 aliphatic radical, at a temperature of from 20.degree. to 110.degree. C., in a ratio such that the resultant product has an isocyanate group content of from 20 to 30%, by weight and to the products produced therefrom.

Abstract: The present invention is directed to a liquid, diphenylmethane diisocyanate composition having an isocyanate functionality of greater than 2.0 and having an isocyanate group content of from about 20 to about 30 percent by weight prepared by reacting:(a) diphenylmethane diisocyanate with(b) a mixture of(i) from about 5 to about 20 equivalent percent of a monohydroxy alcohol,(ii) from about 25 to about 35 equivalent percent of a poly-1,2-propylene ether glycol having a molecular weight of from 134 to 700, and(iii) from about 45 to about 65 equivalent percent of a trihydroxy alcohol selected from the group consisting of trimethylolpropane, triethylolpropane, glycerin and 1,3,6-hexane triol,the total equivalent percent of (i), (ii) and (iii) being 100,the weight ratio of (a) to (b) being from 5:1 to 15:1.

Abstract: The present invention is directed to a process for the production of an isocyanate which is both stable and liquid at room temperature comprising reacting pure diphenylmethane diisocyanate or crude diphenylmethane diisocyanate with the monoallyl ether of trimethylolpropane at a temperature of from 20.degree. to 110.degree. C., in such a ratio that the resultant product has an isocyanate group content of from 20 to 30%, by weight, and the product resulting therefrom.

Abstract: The present invention is directed to a process for continuously producing aqueous hydrochloric acid having a concentration of at least 3.5% by weight comprising:(a) continuously introducing water to the top of an absorption unit,(b) continuously introducing a gas stream containing anhydrous hydrogen chloride to the bottom of said absorption unit,(c) removing an overhead gaseous stream from said unit, said gaseous stream containing no more than 3% by weight, and preferably no more than 1% by weight hydrogen chloride, and(d) removing a bottom liquid stream from said unit, said bottom stream containing at least 35.5% by weight hydrogen chloride, and(e) returning a portion of said bottom stream to said unit.

Abstract: The present invention is directed to a thermoplastic molding composition comprising a blend of a thermoplastic aromatic polycarbonate resin, a graft elastomer, a polyanhydride and glass fibers, said composition is characterized by its improved impact performance.

Abstract: The present invention is directed to a polyol blend comprising:(a) from about 5 to about 30% by weight of a member selected from the group consisting of 1,4-butanediol, ethylene glycol, and mixtures thereof, and(b) from about 70 to about 95% by weight of a polyester polyol produced by reacting from 10 to 60 parts by weight of adipic acid with from 40 to 90 parts by weight of a polyoxyethylene glycol having a molecular weight of from 150 to 680, the parts of adipic acid and polyoxyethylene glycol being 100, and wherein said polyester has an hydroxyl number of from about 25 to about 130, and an acid number of 2 or less.

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

Abstract: A flame resistant polycarbonate blend comprising an alkylated aromatic polycarbonate and a sulfur-bearing compound characterized in exhibiting V-0 flame resistance classification, according to UL-94, is provided. Further provided is a process for the preparation of such blend.

Abstract: The present invention is directed to a polyol blend comprising a polyether polyol having at least two and no more than three hydroxyl groups and from about 5 to about 40 percent by weight based on the total weight of the two components of a dispersion of a polyurea and/or polyhydrazodicarbonamide in an organic compound containing at least one hydroxyl group, the solids content of said blend being from about 1 to about 8 percent by weight. The polyol blend is useful in the production of polyurethane products.

Abstract: The present disclosure is concerned with new modifications of the dyestuff Color Index Acid Blue 324 which have significant advantages over the known form of this dyestuff. In particular, the preferred modification is much easier to isolate from an aqueous medium by filtration and the isolated product has a higher purity. The filtration proceeds much more rapidly and gives a filter residue of a much higher solids content. Furthermore, this new form of the dyestuff imparts a dramatically lower viscosity to aqueous dispersions or slurries prepared from it than are obtained using the old form of this dyestuff. These modifications are obtained by heating an aqueous dispersion or slurry of the known form of Color Index Acid Blue 324 to temperatures in excess of about 97.degree. C. and for the preferred form in the presence of a substance which reduces the surface tension between the dispersed organic dyestuff phase and the aqueous dispersing medium.

Abstract: A thermoplastic molding composition is described comprising a blend of a polycarbonate, a certain graft polymer and polymeric acidifying agent which composition is characterized by its improved stability and impact strength.

Abstract: The present disclosure is concerned with aqueous dispersions of anionic acid dyes, especially the monosulphonated level dyeing acid dyes, which have low room temperature, low shear viscosities and good storage stability. This low viscosity enables them to be readily poured, pumped and otherwise handled. These dispersions comprise dyestuff solids with a controlled particle size distribution having a median value between about 1 and 10 microns; an anionic dispersant; and an electrolyte. In a preferred embodiment the pH is adjusted to give an optimum viscosity value. Another preferred feature is the adjustment of the rheology with a thickening agent such as xanthan gum. These dispersions find particular utility in the continuous dyeing of carpet, especially in Kuesters or foam dyeing equipment.

Abstract: Thermoplastic compositions comprising a polycarbonate resin, a graft copolymer and conductive particles are provided suitable for the preparation of molded articles characterized in that they provide an improved level of EMI shielding.

Abstract: The present invention relates to the novel monomer 4,4'-bis(4-hydroxyphenyl thio)biphenyl, to a process for its production and to its use in the preparation of polycarbonates, polyurethanes, polyesters, polysulfones and polyethers which polymer resins are useful in the preparation of films, fibers and molded parts.

Abstract: The present invention is directed to a polycarbonate composition comprising finely divided silica which composition is characterized by low gloss.

Abstract: Polycarbonate compositions comprising an aromatic polycarbonate resin wherein dispersed are calcite particulates, are particularly suitable for the preparation of films characterized by their low coefficient of static friction, high light transmission and virtual freedom from haze.