CatOnium phase transfer catalysts (PTC), which are salts of onium ions  are widely used in the production of monomers, polymers, agrochemicals, pharmaceuticals, dyes, flavors, fragrances, explosives, surfactants, petrochemicals, rubber, and wide variety of other commodity, specialty and fine organic chemicals., as well as in pollution prevention, pollution treatment and the removal or destruction of impurities in waste and product streams.

Typical reactions where CatOnium PTC’s are employed as catalysts include, etherification, esterification, transesterification, N-alkylation, C-alkylation, S-alkylation, mercaptan reactions, dehydrohalogenation, Michael addition, aldol condensation, oxidation, epoxidation, chloromethylation, hydrohalogenation, hydrogenation, borohydride reduction, darzens condensation, carbene reactions, polymerization, polymer modification, displacements using: cyanide, fluoride, bromide, iodide, azide, thiocyanate, sulfide, other inorganic nucleophiles, benzyl chloride, allyl chloride, benzoyl chloride, methanesulfonyl chloride, epichlorohydrin, PCl3, POCl3 other alkyl halides, acyl halides, sulfonyl halides, phosphoro halides and anhydrides

To meet the requirements of our customers we supply more than 100 different PTC’s. The most common phase transfer catalysts are quaternary ammonium salts containing either alkyl or mixed alkyl/aryl groups. Their applicability is restricted by the thermal stability which is limited to about 1000C. We supply broad range of quaternary ammonium halides, with F-, Cl-, Br- and I- as counter anions, and limited number of quaternary hydroxyl ammonium compounds, with an OH- group as counter anion. Phosphonium salts are used in the cases in which the use of ammonium compounds because of their thermal instability is not suitable. The thermal stability of the quaternary phosphonium salts is quite good in a range between 120-1500C, with indications that they can be also use at temperatures up to 2000C. The last group of PTC’s in our program includes a range of quaternary pyridinium salts that are very effective at high temperatures.