Stauffer Chemical Company

Akzo America Inc.

Akzo N.v.

Ici Americas, Inc.

Danielle A Bright

Alan M Aaronson

Jeffrey E Telschow

Phenolphthalein bis(dihydrocarbyl phosphates), optionally substituted with chloro or bromo atoms, can be used as fire retardant additives for polymers.

Phenolphthalein bis (dihydrocarbyl phosphate) compounds

Glycol bisphosphate compounds are formed by first hydrolytically condensing a dihydrocarbylhalophosphate to form a tetrahydrocarbyl pyrophosphate and then reacting the pyrophosphate with a cyclic ether to form the glycol bisphosphate.

Formation of tetraarylpyrophosphate

Glycol bisphosphate compounds are formed by first hydrolytically condensing a dihydrocarbylhalophosphate to form a tetrahyrocarbyl pyrophosphate and then reacting the pyrophosphate with a cyclic ether to form the glycol bisphosphate.

Formation of glycol bisphosphate compounds

The present invention relates to a process for the preparation of alkyl semicarbazides by reaction of a dithiocarbamate and hydrazine in a weakly basic reaction media using a metal rearrangement catalyst.

Preparation of alkyl thiosemicarbazides

S-substituted phosphorodichloridothiolates such as S-alkyl, cycloalkyl, aralkyl, and arylphosphorodichloridothiolates are prepared by reacting a sulfuryl chloride and a mercaptan or disulfide with phosphorus trichloride and a carboxylic acid anhydride.

Process for preparing phosphorodichloridothiolate

Isothiocyanates are formed by oxidizing, with gaseous oxygen or air, in the presence of a metal oxidation catalyst a dithiocarbamate with appropriate control of the pH of the reaction medium to suppress the formation of by-products. Optionally a quaternary ammonium halide catalyst can be used to increase product yield.

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Spring Valley, NY, United States of America

Danielle A Bright