Jefferson Chemical
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A e r o s o l deicers boom.••JEFFERSON GLYCOLS contribute to the proper freezing point and v i s c o s i t y balance A motorist's necessity . . . sales in the 50-60million-unit range within five years. Such are the optimistic predictions for pushbutton, pressurepackaged windshield deicers. Some 100 brandnames are betting this relatively simple, low-cost product will live up to full expectations. One reason, deicers are multiple-use items . . . can be used to free frozen locks, cut window fogging and sometimes to improve tire traction. The usual deicer consists of approximately 20% by weight ethylene or propylene glycol, 60% isopropyl alcohol and 20% propellant, with small quantities of surface-active agents and sometimes perfume. The glycol is used to achieve the proper 110
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evaporation rate and viscosity-freezing point relationship in the deicer formulation. Jefferson Chemical, a leading supplier of ethylene glycol for private label antifreeze marketers, is a thoroughly dependable source for your deicer glycol needs. Other high quality glycols produced by Jefferson and having aerosol applications are diethylene, triethylene, propylene and dipropylene glycols. Triethylene glycol and propylene glycol are used in air fresheners and deodorants, serving to dissolve or absorb odorous molecules. They also have germicidal action. The latter is attributed to the condensation of the vapor on the bacteria particles causing them to fall to the floor. Certain types of
FUNCTION OF GLYCOLS IN WINDSHIELD DEICERS To a degree, windshield deicers serve to inhibit or prevent ice formation; but their primary function is to dissolve existing layers of ice. On contact, the glycolisopropanol forms an aqueous solution with the outer ice layer and lowers its freezing point. This solution then progressively softens lower layers of ice until easilyremoved slush is formed. Isopropanol alone would evap orate too fast to have any residual effect, and this action might also accelerate refreezing because of evaporative cooling of the surface. Ethylene or propylene glycol evaporates more slowly. However, glycols alone would be too viscous for this application; thus appropriate mix tures of these freezing point depressants with alcohol are used.
streptococci are reduced radically by this type aerosol. Propylene and dipropylene glycols, because of their low toxicity, are preferred in preparations designed for human contact. Both are used exten sively in aerosol antiperspirants, spray shampoos, and dermatologicals such as athlete's foot spray . . . they serve both as a solvent and emollient in sun tan and burn preparations. Other desired charac teristics of the glycols in aerosol applications are their high boiling points and low evaporation rates. For complete product information and helpful technical service, contact . . . Jefferson Chemical Company, Inc., 1121 Walker Avenue, P. O. Box 303, Houston 1, Texas.
wl Ε F R Ε R S O M C H E M I CALS HOUSTON • NEW YORK
• CHICAGO • CLEVELAND
CHARLOTTE • LOS ANGELES • SAN FRANCISCO 023
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