Abstract: This invention is concerned with a new class of flame retardant polycarbonate compositions. More particularly, the invention is concerned with admixtures of an aromatic polycarbonate and a flame retardant additive combination consisting of a halogenated organic compound and an alkali or alkaline earth metal salt of an inorganic sulfur compound. The flame retardant polycarbonates can be molded or formed into flame retardant articles such as films, sheets, fibers, laminates or reinforced plastics by conventional techniques.
Abstract: Encapsulation of Na.sub.2 SO.sub.4 particles by Glauber's salt crystals formed by crystallization of Na.sub.2 SO.sub.4 from aqueous solution in systems comprising Na.sub.2 SO.sub.4, H.sub.2 O and Glauber's salt is decreased by including ethylene glycol monobutyl ether in the system.
Abstract: The average size of Glauber's salt crystals formed by crystallization of Na.sub.2 SO.sub.4 from aqueous solution in systems comprising Na.sub.2 SO.sub.4, H.sub.2 O and Glauber's salt is decreased by including a fluorine-containing surfactant in the system.
Abstract: Polycarbonate resins can be stabilized against the adverse influence of UV light by incorporating either directly into the resin or by means of a coating on the surface of the polycarbonate resin, an effective amount of a dicyano stabilizer.
Abstract: A catalytic aromatic salicylate process comprising contacting a phenol, carbon monoxide, a base, and a Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum, an oxidant having an oxidation potential greater than that of said selected Group VIIIB element, and recovering at least a portion of the resulting salicylate.
Abstract: Disclosed is a solution including an aromatic bis (ether dicarboxylic acid) component, an organic diamine component and a solvent system including a water-soluble organic solvent component, which may be a dipolar aprotic solvent or a monoalkyl ether of ethylene glycol or of diethylene glycol, and optionally water. The solution may be coated on a substrate and polymerized to form high quality polyetherimide coatings.
Abstract: A de-alkylation process which comprises contacting a t-alkylether-alkanol, e.g. 4-t-butylether-n-butan-1-ol, with an acidic solid mixed oxide, e.g. silica-alumina, catalyst which results in the formation of alkanediols, e.g. 1,4-butanediol, in the substantial absence of undesirable side reactions, e.g. the formation of tetrahydrofuran. The resulting alkanediols are useful in the preparation of polyesters, e.g. polybutylene terephthalates.
Abstract: This invention is concerned with a new class of halobisphenolethylene polycarbonate-vinyl aromatic resin blends. More particularly, the invention is concerned with halobisphenolethylene polycarbonate-vinyl aromatic resin blends which exhibit enhanced physical and/or chemical properties. The halobisphenolethylene polycarbonate-vinyl aromatic resin blends are suitable for the manufacture of filaments, fibers, films, sheets, laminates and articles of manufacture including reinforced articles by conventional manufacturing techniques.
Abstract: Linear, branched and/or cross-linked block polymers of polyphenylene oxides and polystyrene are described. The polyphenylene oxide-polystyrene block polymers can be molded, calendered, or extruded as films, sheets, fibers, laminates or other useful articles of manufacture.
Abstract: A process of forming linear, branched and/or cross-linked urethane-coupled polymers of quinone-coupled polyphenylene oxides is described which comprises contacting in a high fluid shear stress reaction medium a polyfunctional isocyanate with a quinone-coupled polyphenylene oxide having an average hydroxyl group per molecule value greater than zero including 2.0 or less, and optionally, additionally, a polyphenylene oxide having an average hydroxyl group per molecule value greater than zero including 1.0 or less.
Abstract: Linear, branched and/or cross-linked urethane-coupled block polymers of quinone-coupled polyphenylene oxides are described. The polymers are prepared by contacting polyfunctional isocyanates with quinone-coupled polyphenylene oxides having an average hydroxyl group per molecule value greater than zero including 2.0 or less. The polymers either alone or in combination with other polymers can be formed into useful articles of manufacture by conventional molding, extruding, etc., processing techniques.
Abstract: An article of manufacture having improved high temperature oxidation and corrosion resistance comprising: (a) a superalloy substrate containing a carbide reinforcing phase, and (b) a coating consisting of chromium, aluminum, carbon, at least one element selected from iron, cobalt or nickel, and optionally an element selected from yttrium or the rare earth elements.
June 16, 1978
Date of Patent:
December 2, 1980
General Electric Company
Melvin R. Jackson, John R. Rairden, III
Abstract: A carbonylation process which comprises contacting a .beta.-fluoroalkanol, carbon monoxide, a base, and the Group IIB element mercury present in an oxidation state greater than zero. The resulting .beta.-fluoroaliphatic carbonates can be employed in combination with alkanols and/or phenols to prepare aliphatic and aromatic mono- and polycarbonates. The resulting carbonates are useful in a wide variety of applications, especially polycarbonates which can be molded or formed into films, sheets, fibers, laminates, or reinforced plastics by conventional techniques.
Abstract: Quinones and polyphenylene oxides are reacted to provide quinone-coupled polyphenylene oxides having an average hydroxyl group per molecule value greater than the average hydroxyl group value associated with polyphenylene oxide reactants. The resulting new polymers have improved color and in combination with styrene resins provide thermoplastic compositions having improved chemical and physical properties.
Abstract: An improved substantially solvent-free process for preparing phthalate-moiety based polyesterimide resins, new resins prepared by the process, and substrates (e.g., electrical conductors) coated with compositions comprising the new resins are described.
January 9, 1978
Date of Patent:
November 11, 1980
General Electric Company
Edith M. Boldebuck, Eugene G. Banucci, Martin A. Byrne