Chevron Research Company

Henry Y Lew

Alan E Straus

A process for the preparation of a low viscosity aqueous alkyl toluene or alkyl xylene sulfonate which comprises neutralizing alkyl toluene or alkyl xylene sulfonic acid with aqueous sodium hydroxide in the presence of sufficient sodium chloride to lower the viscosity of the sulfonate salt produced. Alternatively, the sodium chloride may be added subsequent to neutralization of the sulfonic acid.

Process for the preparation of a low viscosity alkyl toluene or alkyl

Processes for the anionic polymerization of lactam accelerated by the presence of nitrothiophene and certain derivatives thereof. The processes are especially applicable to the preparation of poly-2-pyrrolidone which can be molded into filaments, films, and shaped articles in general.

Nitrothiophene-accelerated lactam polymerization

Processes for the anionic polymerization of lactam accelerated by the presence of nitrobenzene and/or certain derivatives thereof. The processes are especially applicable to the preparation of poly-2-pyrrolidone which can be molded into filaments, films, and shaped articles in general.

Nitrobenzene-accelerated lactam polymerization

Processes for the anionic polymerization of lactam accelerated by the presence of certain triarylmethyl halides. The processes are especially applicable to the preparation of poly-2-pyrrolidone which can be molded into filaments, films, and shaped articles in general.

Growing community of inventors

El Cerrito, CA, United States of America

Henry Y Lew