Abstract: Conductive polyphenylene ether-polyamide compositions having excellent ductility are prepared by melt blending polyphenylene ether, an unsaturated impact modifying polymer and a functionalizing compound in an initial step, optionally in combination with a portion of the polyamide, and subsequently melt blending with the remainder of the polyamide and conductive carbon black having a low volatiles content. A mixture of polyamides, illustrated by mixtures of polyamide-6 and polyamide-66, is employed.

Abstract: Conductive polyphenylene ether-polyamide compositions having excellent ductility are prepared by melt blending polyphenylene ether, an unsaturated impact modifying polymer and a functionalizing compound in an initial step, optionally in combination with a portion of the polyamide, and subsequently melt blending with the remainder of the polyamide and conductive carbon black having a low volatiles content. A mixture of polyamides, illustrated by mixtures of polyamide-6 and polyamide-66, is employed.

Abstract: Conductive polyphenylene ether-polyamide compositions having excellent ductility are prepared by melt blending polyphenylene ether, an unsaturated impact modifying polymer and a functionalizing compound in an initial step, optionally in combination with a portion of the polyamide, and subsequently melt blending with the remainder of the polyamide and conductive carbon black having a low volatiles content. A mixture of polyamides, illustrated by mixtures of polyamide-6 and polyamide-66, is employed.

Abstract: Disubstituted monochlorotriazines such as 2-chloro-4-mesitoxy-6-glycidoxy-1,3,5-triazine are prepared in organic solution by first combining a monoorganoxy dichlorotriazine with an aqueous alkali metal hydroxide solution in a specific concentration and molar ratio, and adding to the mixture thus produced a hydroxyaliphatic or hydroxyaromatic compound, preferably glycidol, in the presence of at least one hydrophilic phase transfer catalyst such as tetra-n-butylammonium bromide. The reaction can be integrated with either or both of a prior step of dichlorotriazine preparation and a subsequent step of capping a hydroxy-terminated polymer, especially a polyphenylene ether.

Abstract: Disubstituted monochlorotriazines such as 2-chloro-4-mesitoxy-6-glycidoxy-1,3,5-triazine are prepared in organic solution by first combining a monoorganoxy dichlorotriazine with an aqueous alkali metal hydroxide solution in a specific concentration and molar ratio, and adding to the mixture thus produced a hydroxyaliphatic or hydroxyaromatic compound, preferably glycidol, in the presence of at least one hydrophilic phase transfer catalyst such as tetra-n-butylammonium bromide. The reaction can be integrated with either or both of a prior step of dichlorotriazine preparation and a subsequent step of capping a hydroxy-terminated polymer, especially a polyphenylene ether.

Abstract: Substituted dichlorotriazines are prepared by the reaction of a suitable hydroxy compound with cyanuric chloride in a substantially non-polar organic solvent, in the presence of an aqueous alkali metal hydroxide solution having a concentration in the range of about 1-20% by weight and a phase transfer catalyst. The phase transfer catalyst employed is a tetraalkylammonium or tetraalkylphosphonium salt free from aromatic substituents and wherein the alkyl groups contain 3-5 carbon atoms. Hydrophilic phase transfer catalysts, in which the alkyl groups contain up to about 5 carbon atoms, are preferred.

Abstract: Dense tungsten ingots are prepared by hot isostatically pressing at a temperature of about 1500.degree. to about 1700.degree. C. and a pressure of about 20 to about 30 ksi for about 2 to about 3 hours a refractory container comprising a green tungsten metal compact in contact with a dopant, the tungsten metal of the compact being formed prior to contact with the dopant; the dopant being a material which is insoluble in tungsten and contains molecules having atomic radii greater than the atomic radius of tungsten by at least about 15%.

Abstract: The present invention relates to a novel method for conducting phase transfer catalysis in a multiphase reaction system wherein the different phases are separated by a membrane permeable to the phase transfer catalyst and its various reaction complexes. The invention also relates to membranes and a membrane-containing apparatus useful in carrying out phase transfer catalysis.