Abstract: Polycarbonates having improved impact performance are provided, comprising a blend of polycarbonate resin and an acrylic rubber interpolymer composite.

Abstract: A lead-free low-melting frit is made by combining raw materials in amounts such that the product will have a specific oxide analysis, melting the raw materials at a temperature greater than 1000.degree. C. and cooling the thus-formed fused glass in a manner such that a frit is formed. The low-melting frit has the following oxide analysis:7-12.5 parts by weight alkali oxide selected from2-9 parts by weight Na.sub.2 O and 2-7 parts by weight Li.sub.2 O;23-34 parts by weight B.sub.2 O.sub.3 ;2-4 parts by weight Al.sub.2 O.sub.3 ;30-45 parts by weight SiO.sub.2 ;0.75-4 parts by weight F;2-4 parts by weight P.sub.2 O.sub.5 ;4-8 parts by weight ZnO; and2-5 parts by weight TiO.sub.2.These frits are durable, have an incipient fusion point less than about 450.degree. C. and a coefficient of thermal expansion less than 10.times.10.sup.-6 cm/cm/.degree.C. The frits of the present invention are particularly useful as components in vitrifiable glass decorating colors.

Abstract: Polycarbonates are provided with hydrolytic stability by combining the polycarbonate polymer with a carboxylic acid salt of cadmium. The cadmium salt provides improved hydrolytic stability to both polycarbonates based on diphenols and halogenated diphenols over conventional stabilizers, and does not detrimentally affect other properties such as color stability, haze, initial tensile strength and elongation.

Abstract: The instant invention is directed to a process for the production of an inorganic-organic foam composition comprising reacting an organic, nonionic hydrophilic polyisocyanate with an aqueous alkali metal silicate in the presence of a catalyst and a blowing agent, the improvement wherein said aqueous alkali metal silicate contains from 0.1 to 15% by weight, based on the weight of the aqueous alkali metal silicate, of a compound of the formula: ##STR1## wherein A is selected from the group consisting of N, P and S, wherein R, R', R" and R'" may be the same or different and are selected from the group consisting of allyl, vinyl, C.sub.1 to C.sub.17 alkyl or mono- or polyhydroxy substituted alkyl, C.sub.6 to C.sub.10 aryl or mono- or polyhydroxy substituted aryl, C.sub.7 to C.sub.22 aralkyl or mono- or polyhydroxy substituted aralkyl, and C.sub.7 to C.sub.

Abstract: The present invention is directed to light stable polyisocyanate adduct mixtures with an average functionality greater than 2.0 and an isocyanate content of between about 4 and 19 percent by weight based on solids, which has good compatibility with apolar solvents and good storage stability in a solution of polyisocyanate solvents. The polyisocyanate adduct mixtures are based on the reaction product of a polyisocyanate, preferably a biuret-containing polyisocyanate, with a first monohydroxy compound containing a saturated hydrocarbon chain of at least 8 carbon atoms and a second monohydroxy compound containing at least one polarity inducing group. Alternatively, both the saturated hydrocarbon chain and the polarity inducing group may be present in the same monohydroxy compound.The present invention is additionally directed to the use of the polyisocyanate adduct mixtures in the process of curing alkyd or acrylic resins and to compositions containing the adduct mixture and alkyd or acrylic resins.

Abstract: The instant invention is directed to a novel catalyst system for the production of polyurethane resin, and the method of use of such catalyst system. The catalyst systems of the instant invention broadly comprise(a) a tertiary amine,(b) a tin compound capable of catalyzing the reaction between an isocyanate group and an active hydrogen atom, and(c) a compound of the formula:(R--COO--.sub.2 Mewherein Me represents calcium or barium, andR represents a hydrocarbon group. It has been found that the component (c) tends to catalyze size reactions which occur during foaming between isocyanate groups and the initial reaction products of isocyanates and active hydrogen containing compounds.

Abstract: The invention is directed to a molding composition comprising an intimate, well dispersed blend of thermoplastic polyurethane, thermoplastic polyphosphonate and thermoplastic polycarbonate which composition is characterized by an improved level of flame resistance. A process for the preparation of said composition is also disclosed.

Abstract: A storage stable, flowable, water dispersible pesticide suspension in an organic water miscible solvent displaying significant but limited solvation of the biologically active pesticide compound and a procedure for preparing it are disclosed. The suspension is stabilized against Ostwald ripening with a dispersant, preferably solid ionic dispersant, and contains inert solid fillers to control the viscosity of the suspension. The particle size of the solid ingredients are controlled to prevent agglomeration.

Abstract: Copolycarbonate resins are prepared from an aromatic diol and a carbonic acid derivative. 2,2-bis(p-hydroxy-phenyl) 1,1,1,3,3,3-hexafluoropropane is co-reacted in a minor amount with the aromatic diol and carbonic acid derivative to form a polycarbonate having improved heat distortion characteristics.

Abstract: The present invention relates to a free-flowing, dry, granular powder comprising the reaction product of 4,4'-diphenylmethane diisocyanate and resorcinol, the product having an isocyanate group content of from 27 to 31% by weight, and to the process for manufacture thereof.

Abstract: The present invention pertains to a method for reducing the processing temperature of a thermoplastic polymer comprising blending the thermoplastic polymer in powder form with an effective amount of a compound having a softening temperature of about 20.degree. to 200.degree. C. lower than the softening temperature of the thermoplastic polymer. The invention further pertains to novel chemical blowing agent concentrates.

Abstract: The present invention involves an improved levelling agent and a method of using it in the disperse dyeing of hydrophobic synthetic fiber materials such as polyesters and polyamides. The levelling agent enhances dye migration without substantially accelerating the exhaustion of dye onto the fabric being dyed. It is based on diaryl ethers such as ditolyl ether mixed with emulsifiers and optionally a diluent which is water or an organic solvent.It also involves a process for improving the levelness of already dyed materials by subjecting them to temperatures above the boiling point of water in the presence of diaryl ether based levelling agents.

Abstract: The present invention is directed to a process for preparing 5-nitro-acet-2,4-xylidine comprising(a) dissolving acet-2,4-xylidine in an aqueous sulfuric acid solution,(b) nitrating the resultant solution with a mixture of nitric acid and sulfuric acid,(c) adding the resultant nitration mixture to an aqueous sulfuric acid solution containing from 25 to 45% by weight of sulfuric acid, while maintaining the temperature at from 20.degree. to 50.degree. C. to thereby produce a slurry containing sulfuric acid in a concentration of from 30 to 50% by weight based solely on the weight of water and sulfuric acid, the total amount of sulfuric acid in said slurry being such that the molar ratio of sulfuric acid to the nitro-acet-2,4-xylidine isomers is from 53:1 to 10:1, and(d) recovering 5-nitro-acet-2,4-xylidine.

Abstract: The present invention is directed to ceramic frits for use in ceramic glazes and to the glazes themselves which when fired consist essentially of:______________________________________ Constituent % by Weight ______________________________________ Alkali (K.sub.2 O, Na.sub.2 O, Li.sub.2 O) 3.5 to 6.5 ZnO 6.0 to 12.5 CaO 6.0 to 12.0 MgO 0 to 0.7 BaO 0 to 5.0 SrO 1.7 to 4.0 B.sub.2 O.sub.3 2.0 to 6.0 Al.sub.2 O.sub.3 7.0 to 12.0 SiO.sub.2 53.0 to 61.0 ZrO.sub.2 0 to 8.

Abstract: The present invention is directed to a room temperature storage stable liquid isocyanate comprising the reaction product of a diphenylmethane diisocyanate and an N-substituted ethanolamine of the formula: ##STR1## wherein R represents a C.sub.6 -C.sub.10 aryl and wherein at least one R.sub.1 represents hydrogen and the other R.sub.1 is selected from the group consisting of hydrogen, C.sub.1 to C.sub.3 alkyl and phenyl.

Abstract: This invention provides a novel method for making polyether polyols from solid initiator compounds containing from 4 to 8 hydroxyl groups. The method involves dissolving the solid initiator compound in a solvent such as dimethyl formamide prior to alkoxylation. The method is particularly useful in making high functional sucrose-based polyether polyols which can be readily processed at moderate temperatures and give low color products. These polyols are particularly suited for the production of rigid polyurethane foams.

Abstract: This invention relates to the preparation of low foam generating and/or low dusting dyestuff or fluorescent whitening agent formulations by continuous introduction of defoaming and/or dedusting agents into the feed stream carrying the aqueous dyestuff or fluorescent whitening agent preparation to a drying apparatus.

Abstract: A sufficient amount of a novel halogenated aromatic imide sulfonate, represented by the structural formula: ##STR1## wherein X is a halogen, n is 1 to 4, Y is a lower alkyl having 1 to 4 carbon atoms, a halogen or a hydrogen atom, "a" is 0 to 4, M is an alkali metal and T is either 0 or 1, is incorporated into an aromatic polycarbonate to provide flame resistance thereto.