A composition and process are provided for the recovery of the values of zinc, molybdenum, copper, lead, iron (pyrite), and iron-containing small amounts of gold or uranium, or both, from ores comprising these mineral sulfides. The aqueous composition is the impure form of an alkali metal alkyl trithiocarbonate compound. The process comprises employing said aqueous composition as a collection agent for the above minerals in an ore recovery process. A process for the separation of zinc values fro...

A composition and process are provided for the recovery of the values of zinc, molybdenum, copper, lead, iron (pyrite), and iron-containing small amounts of gold or uranium, or both, from ores comprising these mineral sulfides. The aqueous composition is the impure form of an alkali metal alkyl trithiocarbonate compound. The process comprises employing said aqueous composition as a collection agent for the above minerals in an ore recovery process. A process for the separation of zinc values fro...

This invention describes reagent precursors and methods for chemical and biochemical reactions. These reagent precursors that can be activated in solution upon irradiation to generate reagents required for the subsequent chemical reactions. Specifically, photogenerated reagents (PGR) are useful for controlling parallel combinatorial synthesis and various chemical and biochemical reactions.

An incubation apparatus containing a rack or block with openings capable of receiving containers containing reagents. The rack or block is attached to a heating element for heating containers in the block. The block is driven by a motor actuated by a timer such that at the end of a predetermined time period the block is pivoted whereby containers will fall out of the block and onto a sloping surface on the housing of the incubator. This apparatus provides for the carrying out of reactions for a ...

Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: ##STR00001## whereinQ is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH.sub.2)l, or {(CH.sub.2)i-Y--(CH.sub.2)j}k, wherein Y is selected from the group consisting of CH.sub.2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl,...

A blend of certain xanthates with mercaptan/glycol combinations produce collector compositions which yield improved results in ore flotation.

An object of the present invention is to provide a novel solid reagent capable of solving the problems of conventional solid reagents based on resin beads.The present invention relates to a solid reagent comprising an organic polymer base in which a polymer side chain is introduced onto the backbone of the organic polymer base via graft polymerization and a reactive functional group is introduced onto the polymer side chain. The organic polymer base is preferably in the form of a fiber, a woven ...

An object of the present invention is to provide a novel solid reagent capable of solving the problems of conventional solid reagents based on resin beads.The present invention relates to a solid reagent comprising an organic polymer base in which a polymer side chain is introduced onto the backbone of the organic polymer base via graft polymerization and a reactive functional group is introduced onto the polymer side chain. The organic polymer base is preferably in the form of a fiber, a woven ...

Disclosed are compounds capable of facilitating transport of biologically active agents or substances into cells having the general structure: ##STR00001## wherein Q is selected from the group consisting of N, O and S; L is any bivalent organic radical capable of linking each Q, such as C, CH, (CH.sub.2)l, or {(CH.sub.2)i-Y--(CH.sub.2)j}k, wherein Y is selected from the group consisting of CH.sub.2, an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl...

A class of reagents are synthesized from an aminobenzaldehyde base compound. The reagents are stable, sensitive, and useful in quantitative and qualitative analyses for: primary aromatic and aliphatic amines, reactive compounds containing methylene and amido (e.g., urea) groups; amino acids, enzymes, and immunoreactants.