86 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS f•':'•.•i•: -'"'•h.. '•/I,':' i - '.•::• .:'":•:. "-. .--, ... . ... :• •5 *•::'.•'-%• ..•.. .•:•::. .'..-'•:... :. ,.•....::. .:•:: ß :..•.•? ß ?. . -, .. .... . ß .:.-,. 4. ":-" .' - =.. ... ß •.-... ? .½' • . .. %'• :": : .. i•. - Left to right, seated: Director Rosemarie Wallisch, President-Elect Hyman Henkin, Presi- dent Robert L. Goldemberg, Secretary Betty Lou Day (standing) Directors Maurice L. Rosenthal, Joseph Jerome, Horst Ehrhardt, Joseph H. Kratochvil, Paul Thau, and 1972 President Martin M. Rieger Society of Cosmetic Chemists 1973 Officers Installed At the December 12th luncheon session of the Society's 1972 annual scientific meeting at the Americana Hotel, New York City, 1972 President Dr. Martin Rieger, Warner- Lambert Research, installed the Officers and Directors for 1973: President President-Elect Secretarty Treasurer Director--Eas• Director--Eas• Director--Eas• Director--Midwest Director--Midwest Director--V•est Chairmano[ the Board-1973 Robert L. Ooldemberg, Director of Research and Development, Van Dyk & Co., Belleville, N.J. Hyman Henkin, Vice President and Director of Research, Helene Curtis Industries, Inc., Chicago, Ill. Betty Lou Day, Teclmical Services, Polak's Frutal Works, Inc., Chi- cago, Ill. Shaw Mudge, President, Shaw Mudge and Co., Stamford, Conn. Mattrice L. Rosenthal (2 years), Vice President, New Product Devel- opment and Technical Sales, Robeco Chemicals, Inc., New York City Joseph H. Kratochvil (3 years), Director of Cosmetic Research, Firmenich, Inc., New York City Paul Thau (1 year), Section Head, Toiletries Research, Warner- Lambert Company, Morris Plains, N.J. Rosemarie Wallisch (2 years), Director, Research and Development, Johnson Products Co., Inc., Chicago, Ill. Joseph Jerome (1 year), American Medical Association, Chicago, Ill. Horst Ehrhardt (3 years), West Coast Manager, Roure Bertrand Dupont, Inc., Los Angeles, Calif. Marth• M. Rieger, Warner-Lambert Research Institute, Morris Plains, N.J.

J. Soc. Cosmet. Chem., 24, 87-101 (February 2, 1973) The Relationship between Emulsions and Foams. Aerosol I. Triethanolamine Myristate/Freon Propellant Systems PAUL A. SANDERS, Ph.D.* Presented May 25, 1972, Serai•ar, Los Angeles, Calif. Synopsis-Two aqueous triethanolamine myristate/Freon propellant emulsions with differ- ent degrees of stability were studied in conjunction with their corresponding foams to de- termine ff any relationship existed between the PROPERTIES of the EMULSIONS and those of the FOAMS. A glass pressure cell was developed for microscopic observations of the emulsions. MICROSCOPIC and VISUAL OBSERVATIONS of the two systems showed that the surfactant system producing emulsified propellant droplets with the smaller diameters also produced foams with an initially smaller bubble size and a slower increase in bubble size after discharge. The systems with the smaller emulsified droplets were the most stable and produced the most stable foams. The average diameter of the emulsified propellant droplets and their corresponding foam bubbles decreased with product discharge. However, the range of the diameters of the foam bubbles increased near the end of the discharge. INTRODUCTION Most aerosol cosmetic foam products are formulated as aqueous oil-in-water emulsions in which the propellant droplets, liquefied under pressure, are dis- persed throughout the aqueous phase. When the emulsion is discharged, the dispersed liquefied propellant droplets vaporize when they reach atmospheric *"Freon" Products Laboratory, E. I. du Pont de Nemours & Co., Inc., Wfiraington, Del. 19898. 87