82O JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table X Variation in Lauryl Alcohol Concentration-Triethanolamine Laurate Systems Laurate•/Lauryl Emulsion Properties Alcohol Ratio Drainage (Mols) Viscosity Stability (60 min) Foam Properties •,c Stiffness (g) 1: 0 Low 1-5 min 86.0 1: •/• Low 30-60 rain 83.0 1: •/• Low 60 min 65.0 1: •/• Low 16 hr 40.0 1:1 Low to medium 16 hr 11.0 8 10 16 18 22 Triethanolamine laurate concentration = 0.10 21//. All discharges were quiet. All foam densities ranged from 0.062 to 0.063 g/cc. Table XI Variation in Myristyl Alcohol Concentration-Triethanolamine Myristate Systems Myristate•/ Emulsion Properties Alcohol Ratio (Mols) Viscosity Stability Foam Properties • Drainage Stiffness Type of (3 hr) (g) Discharge 1:0 Low 15-30 rain 1: •/• Low 5 hr 1: •/• High 5 hr 1: • High 5 hr 1:1 High 5 hr 56 42 Quiet 2 45 Quiet 1 42 Slightly noisy 0 52 Noisy 0 56 Noisy Triethanolamine myristate concentration = 0.10 Foam densities ranged from 0.064 to 0.069 g/cc. Table X[I Variation in Propellant-Triethanolamine Laurate/Lauryl Alcohol Systems Propellant Foaxn Properties Emulsion Properties Drainage Stiffness Density Viscosity Stability (60 min) (g) (g/cc) Type of Discharge Freon-12 Freon-12/Freon-114 (40/60) Freon- 114 Freon- 12/Freon- 11 (50/50) Propdlant 142b Propellant 152a Low to 5 hr 4 18 0.052 medium Low to 5 hr 4 21 0. 065 reediron Low to 5 hr 2 26 0. 067 reediron Low to 5 hr 44 8 I! 053 medimn Low ,5 hr 65 12 0. 042 Low to 5 hr 3 14 O. 036 medium Quiet Quiet Quiet --semi- liquid .Quiei Noisy Noisy

• 4"' .i' ' .: •: .... • :: • • • • : - - •.d •' ' i• •'• :::. ". . • •'• •. • '• :• . ". ' .... •T ' • .. f .• . :• •¾: .•..... . . •-..• •.:• ....... • '•.• •'.' .'" .•?• •:d• ?•.: •..... ..... ':.'.• '.' -.-•'?• • •.• =• ? •.• •'='•-. ..:.'.-:. .... • .,. :•, •: : : . :• •x:..• .... •. -.• ....... •.•.: •.:•? .•=. .. .... :: ...... .....•.. • .• ?,•.,• '•= •.•:•. , ..•...•? ß . .•..•.., •.•.•:•- ?.•:•:.• .•: .:•?• • • .:..• Figure 6. Photomicrograph of a tricthanolamine stearate foam ,.•..•..•. • •. =5='.4 •. " '•' :•i: .:: ,. . . :::•. •...• "'•,.:•:•:• 5'.• :'-'. • .•.:')':': •' '::•'/: - -i':• :-.•' -=' . -..- .' .• •?•.::. ::=:•" • •:• •-• ..•'. i - .. •= .•: .•. •" =:•i•::•'" '=5 ::':•i '•:'•: Figure 7. Photomicrograph of a triethanolamine stearate/stearyl alcohol foam