Abstract: Cohalogenation of unsaturated polyesters containing pendant unsaturation and a dicyclopentadienyl ester of an .alpha.,.beta.-unsaturated carboxylic acid is carried out at room temperature or lower to simultaneously and selectively halogenate the non .alpha.,.beta.-unsaturation. These materials have utility in plastics, such as fire-retardant castings.

Abstract: Unsaturated polyesters modified with a norbornene functional compound, such as dicyclopentadiene, and containing a phosphonate group cure into fire retardant plastics.

Abstract: Condensation products of a fatty acid or fatty acid ester and a hydroxyalkylated polyalkylenepolyamine are useful as conditioners to improve the recovery of clean coal in a froth flotation process. The presence of these condensation products in the flotation medium is particularly effective to enhance the recovery of oxidized bituminous coal.

Abstract: In the beneficiation of phosphate ore by the flotation of siliceous material, the utilization of a condensate of N-aminoethylpiperazine with a fatty acid or fatty acid ester improves the separation of phosphate from silica. This improvement is especially great in the presence of a co-collector consisting of a polyethylenepolyamine condensed with a fatty acid.

Abstract: In the beneficiation of phosphate ore by flotation of siliceous material, the use of an alkyl-substituted phenyl ether amine or a hydroxyalkylated derivative thereof as a collector affords improved separation of phosphate from the siliceous matter.

Abstract: Certain ether amines and their derivatives are useful to improve the recovery of clean coal in a froth flotation process. The presence of these ether amines and derivatives in the flotation medium is particularly effective to enhance the recovery of oxidized bituminous coal.

Abstract: In the beneficiation of phosphate ore by the flotation of siliceous material, a collector prepared by condensing a mixture of a fatty acid or ester, and ethanolamine and a hydroxyethylethylenediamine improves the separation of phosphate from silica.

Abstract: Certain condensation products of a fatty acid or fatty acid ester and a hydroxyalkylated alicyclic nitrogen-containing compound are useful as conditioners to improve the recovery of clean coal in a froth flotation process. The presence of these condensation products in the flotation medium is particularly effective to enhance the recovery of oxidized bituminous coal.

Abstract: In the beneficiation of phosphate ore by the flotation of the siliceous material, the utilization of a condensate of a polyethylene polyamine, having from 10 to 24 carbon atoms, with a fatty acid, fatty acid ester or a fatty acid and an alkylolamine improves the separation of phosphate from silica. This improvement is especially great in the presence of unreacted fatty acid. Moreover, this condensate is more readily dispersed in the flotation medium than the condensate of diethylenetriamine with fatty acid employed by the prior art.

Abstract: In the flotation of phosphate ore slurries with fuel oil and a fatty acid, the addition of an aromatic polycyclic, hydrocarbon compound bearing a nuclear sulfonic acid or sulfonate moiety on each ring to the ore slurry prior to conditioning enhances the separation of phosphate from silica. Disulfonated biphenyl or diphenyl ether compounds and disulfonated or trisulfonated triphenyl diether, triphenyl or biphenylyl phenyl ether compounds, wherein the compound bears at least one nuclear alkyl group having from 12 to 22 carbon atoms, are particularly advantageous additives in a phosphate flotation process.