Chemical compositions are provided having the structure of Formula (I): ##STR00001##
where R includes at least one aromatic moiety, and X and X may both or independently include an aromatic moiety, an aliphatic moiety, or a hydrogen. Additionally, chemical formulations are provided which include the chemical composition having the structure of Formula (I) and at least one solvent.

A well treatment composition for use in a hydrocarbon-bearing reservoir, optionally as a kill pill, and comprising a reversible aminal gel composition is disclosed. The reversible aminal gel composition includes a liquid precursor composition. The liquid precursor composition is operable to remain in a liquid state at about room temperature. The liquid precursor composition comprises an organic amine composition; an aldehyde composition; a polar aprotic organic solvent; and a metal salt composition. The liquid precursor composition transitions from the liquid state to a gel state responsive to an increase in temperature in the hydrocarbon-bearing reservoir. The gel state is stable in the hydrocarbon-bearing reservoir at a temperature similar to a temperature of the hydrocarbon-bearing reservoir, and the gel state is operable to return to the liquid state responsive to a change in the hydrocarbon-bearing reservoir selected from the group consisting of: a decrease in pH in the hydrocarbon-bearing reservoir and an addition of excess metal salt composition in the hydrocarbon-bearing reservoir.

A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1):

##STR00001##

A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1):

##STR00001##

This conductive composition includes: a conductive polymer (a) having a sulfonic acid group and/or a carboxy group; a basic compound (b) having at least one nitrogen-containing heterocyclic ring and an amino group; an aqueous polymer (c) having a hydroxyl group (excluding the conductive polymer (a)); a hydrophilic organic solvent (d); and water (e).

This conductive composition includes: a conductive polymer (a) having a sulfonic acid group and/or a carboxy group; a basic compound (b) having at least one nitrogen-containing heterocyclic ring and an amino group; an aqueous polymer (c) having a hydroxyl group (excluding the conductive polymer (a)); a hydrophilic organic solvent (d); and water (e).

Provided is a heat-curable resin composition having an excellent workability, and capable of yielding a cured product having both a heat resistance and a low water-absorption property. The heat-curable resin composition contains: (A) a cyanate ester compound having in one molecule at least two cyanato groups, and having a cyanate ester group equivalent of 50 to 140; (B) a cyanate ester compound having in one molecule at least two cyanato groups, and having a cyanate ester group equivalent of 150 to 500; and (C) a curing accelerator,
in which the cyanate ester compound (A) is in an amount of 20 to 85% by mass per a total of 100% by mass of the components (A) and (B), and the cyanate ester compound (B) is in an amount of 15 to 80% by mass per the total of 100% by mass of the components (A) and (B).

Provided is a heat-curable resin composition having an excellent workability, and capable of yielding a cured product having both a heat resistance and a low water-absorption property. The heat-curable resin composition contains: (A) a cyanate ester compound having in one molecule at least two cyanato groups, and having a cyanate ester group equivalent of 50 to 140; (B) a cyanate ester compound having in one molecule at least two cyanato groups, and having a cyanate ester group equivalent of 150 to 500; and (C) a curing accelerator,
in which the cyanate ester compound (A) is in an amount of 20 to 85% by mass per a total of 100% by mass of the components (A) and (B), and the cyanate ester compound (B) is in an amount of 15 to 80% by mass per the total of 100% by mass of the components (A) and (B).

The present invention provides carbamylation compositions of one or more urea compounds, one or more polyols and a monovalent transition metal or alkali metal catalyst (i), such as lithium ethylhexanoate, which compositions are substantially isocyanate free, enjoy reduced toxicity in comparison to tin catalysts, and which are useful in making polycarbamates which themselves provide compositions for making crosslinked polyurethanes.

The present invention provides carbamylation compositions of one or more urea compounds, one or more polyols and a monovalent transition metal or alkali metal catalyst (i), such as lithium ethylhexanoate, which compositions are substantially isocyanate free, enjoy reduced toxicity in comparison to tin catalysts, and which are useful in making polycarbamates which themselves provide compositions for making crosslinked polyurethanes.