Abstract:
A catalyst for production of VCM comprising from about 0.01 to about 6% by weight of a salt of a metal selected from the group consisting of rhodium and platinum, from about 0.01 to about 15 % of a salt of a metal selected from the group consisting of iron and copper, and from about 1.0 to about 25% of a salt of zinc; impregnated on a support selected from the group consisting of alumina, titania, zirconia, silica, and silica alumina; said percentages expressing the metal content of each component as a function of the total weight of the catalyst.
Abstract:
Carbonaceous liquid hydrocarbon or aqueous slurries having viscosities lower than previously known to comparable loadings and allowing loadings of up to 90% particulate carbonaceous material having enhanced physical stabilities. Methods of producing these novel carbonaceous liquid hydrocarbon or aqueous slurries are also disclosed using colloid mill to provide the necessary novel particle size distribution.
Abstract:
Electrolytic cell and anode for use in electrowinning molten metal from a fused salt bath e.g. aluminum from cryolite-alumina, said anode consisting of a cermet material formed from a ceramic oxide of, e.g., a ferrite or chromite, and a metal, e.g., a noble metal or alloy thereof.
Abstract:
Corning oils for synthetic yarns which reduced spattering during yarn processing were manufd. by 1 parts aluminium stearate and/or aluminium dioctanoate soap(Metasap) with 79 parts mineral oil(85 sus viscosity) and 20 parts ethoxylated alc. or phenol emulsifier(Tergitol 15S3).
Abstract:
Cell and process for the electrowinning of metals from fused salt baths, especially aluminum from cryolite-alumina (5), featuring a packed cathode bed (7) of loose refractory materials resistant to the molten metal and disposed at the base of the cell. The packed cathode bed allows the molten metal to be continuously drained off so that the anode-cathode distance may be reduced.
Abstract:
A substantially non-consumable anode used in the production of aluminium from a cryolite-based fused bath containing alumina consists of a sintered self-sustaining ceramic oxide body of spinel structure which is made conductive by selective partial substitution, the introduction of non-stoichiometry or by doping so as to maintain the impurities in the produced aluminium at low levels. Preferred materials are partially-substituted nickel ferrite spinels.
Abstract:
Normally solid copolymers of a fluorinated vinyl monomer and a perfluorinated vinyl compound having a carboxyl and/or sulfonyl group attached directly to the perfluorinated vinyl group or indirectly through an alkyl or ether linkage have been found to be soluble in low molecular weight polymers of perhalogenated alkyl ethers, low molecular weight polymers of perhalogenated alkyls and perfluoro kerosenes, each of said solvent materials having boiling points between about 200 C and 350 C. The copolymeric material dissolved in accordance with the instant invention can readily be resolidified by solvent removal and hydrolyzed or converted to the salt form to become a cation exchange material having an equivalent weight in the range of 1000 to 1600. When these cation exchange materials in the salt form become damaged or contaminated during operation, for example in an electro-chemical cell, they may now be reclaimed rather than discarded. The process involves conversion of the salt form of the cation exchanger to the precursor sulfonyl fluoride, carbonyl fluoride, sulfonate ester, or carboxylate ester form followed by dissolution in one of the solvents mentioned above. Dissolved impurities are then removed, e.g., by filtration, and the purified precursor cation exchange material in dissolved state may be shaped into the desired form by solvent removal and hydrolyzed back to the purified cation exchange polymeric material.
Abstract:
An amphoteric water-in-oil self-inverting polymer emulsion is prepared which contains a copolymer of (1) a nonionic vinyl monomer and (2) an amphoteric vinyl monomer or a terpolymer of (1) a nonionic vinyl monomer, (2) an anionic vinyl monomer and (3) a cationic vinyl monomer in the aqueous phase, a hydrocarbon oil for the oil phase, a water-in-oil emulsifying agent and an inverting surfactant. An example of a copolymer is a copolymer of (1) a nonionic vinyl monomer such as acrylamide or methacrylamide and (2) an amphoteric vinyl monomer such as a reaction product of dimethylaminoethyl methacrylate and monochloroacetic acid. An example of a terpolymer is a terpolymer of (1) a nonionic vinyl monomer such as acrylamide or methacrylamid, (2) an anionic vinyl monomer such as sodium acrylate and (3) a cationic vinyl monomer such as a triethyl ammonium ethyl methacrylate methosulfate salt. The emulsion is useful in papermaking, treatment of sewage and industrial wastes, drilling muds and secondary and tertiary recovery of petroleum by water flooding.