Cationic surfactants laundry detergents

Yet another ingredient in laundry detergents is diethyl ester dimethyl ammonium chloride (DEEDMAC). It is a fabric softener. It is a cationic surfactant that is rapidly biodegradable. It works by reducing the friction between fibers, and between fibers and... 

Cationic surfactants are not used as the primary surfactant in laundry detergents, as this responsibility falls on the commodity surfactants such as linear alkyl benzene sulfonates, ethoxylated alcohols and alkyl sulfates. Nevertheless, over the past 20 years there has been extensive art claiming the use of cationics to improve the performance of their anionic counterparts [67,69,70]. A combination of an alkyl phosphate (AP) and (note APE = alkyl... 

Cationic surfactants tend to be specialty items that are tailored for diverse uses such as germicides, textile applications, corrosion inhibitors, and fabric softeners. Their primary growth has been in fabric softeners for home laundry detergents. Because cationics are antistatic agents, they perform well in removing static charges associated with synthetic fabrics. 

Amphoteric surfactants. These compounds have the characteristics of both anionic detergents and cationic fabric softeners. They tend to work best at neutral pH, and are found in shampoos, skin cleaners, and carpet shampoos. They are very stable in strong acidic conditions and are favorably used with hydrofluoric acid. For example, compounds of alkyl-betain or alkylsulfobetaine type possess both anionic and cationic groups in the same molecule even in aqueous solution. These surfactants are rarely employed in laundry detergents because of their high costs [3, 4]. 

This section briefly describes the anionic and nonionic surfactants commonly used in commercial HDLD formulations. Cationic surfactants, although used on a large scale, are found predominantly in rinse-added fabric softener products. LAS, alcohol ethoxylates, and alkyl ether sulfates are three of the most widely used surfactants in liquid laundry detergents [44], Recently, various external considerations, such as environmental pressures, have prompted manufacturers to change their surfactant mix to include newer natural-based surfactants [45-47], including alkyl polyglucosides (Henkel) [48],... 

In addition to surfactants, a number of other materials are present in formulated laundry detergents. Among these are materials called builders. Their main purpose is to counter the detrimental effects of polyvalent cations on detergency. Polyvalent cations are introduced into the wash bath mainly by water hardness but may also come from soil or substrate. In addition, builders serve to increase the detersive effidency and effectiveness of surfactants and to supplement their beneficial effects on soil removal. 

CATIONIC SURFACTANTS IN LAUNDRY DETERGENTS Jeff Chang)... 

The analysis of solvent and perfumes in formulations is performed by GC. For solvent analysis in surfactants sample pretreatment with organic solvent is used for the separation of inorganic impurities. Regarding surfactants and complementary compounds, applications may be mentioned such as the separation of a hardness agent (sodium laurate) in liquid laundry detergent by GC and the Hofmann degradation and analyses of cationic surfactant of the alkyltrimethyl- and dialkyldimethylammonium type in fabric softener and hair rinse. 

The major component of a laundry detergent is surfactant. Surfactants, alone and in combination with other ingredients, work to remove soils from the surface of the cloth through emulsification, roll-up, and electrostatic forces. A variety of different surfactants have been used in laundry detergents, and they can be classified as anionic, nonionic, and cationic. 

Puchta, R., Cationic surfactants in laundry detergents and laundry aftertreatment aids. J. Am. Oil Chem. Soc. 61 367-376, 1984. 

Fabric softeners are cationic surfactants that give clothes a soft feel. They may be incorporated in a laundry detergent or added to the wash separately. 

Uses Emulsifier, detergent, wetting agent, solubilizer for laundry prods., all purpose cleaners, textiles, hard surface cleaners, paints, pesticides, l l cleaners Features Compat. with anionic, amphoteric, cationic surfactants available in Kosher grade stable in aq. acidic and alkaline sol ns Regulatory FDA 21 CFR 180.1001 (c)(e), 182.99 Europe EINECS Canada DSL ... 

Uses SurfaclanL detergent, wetting agent in all-purpose cleaners, hard surfaces, fabrics, laundry detergents and prespotters, heavy-duty Industrial cleaners Features Effective replacement for alkyl phenol ethoxylates In cleaning formulations alkyl phenol ethoxylate free compat. with cationic, anionic, and nonlonic surfactants no gelling at any cones. 

Uses Detergent for hard surface cleaners, laundry detergent liq., misc. cleaners Features Stable in strong acid, neutral and strong alkaline sol ns exc. compat. with anionic, nonionic, cationic surfactants... 

Uses Detergent for hard surface cleaners, laundry detergent liq., misc. cleaners Features Stable in strong acid, neutral, strong alkalis exc. compat. with electrolyte sol ns with anionic, nonionic, cationic surfactants gentle to skin Properties CL, clear liq. Gardner color 3 max. faint, char, odor sol. in water, ethanol sp.gr. 1.17 vise. 10,000 mPa-s max. pH (20% sol n) 9.0-10.0 solids 38.0-39.5% 30-32% act. 

Uses Surfactant, wetting agent, penetrant, emulsifier in laundry detergents, tub and tile cleaners, metal cleaners, disinfectants and sanitizers Features Compat. with nonionic, anionic, cationic, amphoteric surfactants Properties APHA color 100 max. mild odor sp.gr. 0.99 pour pt. -5 C cloud pt. (1% aq.) 42 C flash pt. 182 C pH (1% aq.) 7 surface tens. (0.1%) 28 dynes/cm interfacial tens. (0.1% vs. mineral oil) 6 dynes/cm 100% act. 

Uses Surfactant for degreasing formulations for pre-treatment of metals, automotive parts, car washing shampoos, household laundry detergents, silver cleaners Features Moderate foaming power reduces surface tension does not precipitate in the presence of ions in hard water maintains chemical, physical stability in alkaline or acid environments compat. with non-ionic, anionic, cationic surfactants... 

Uses Surfactant, vise, builder for hard surf, cleaners, lt.-duty liq. detergents, shampoos, cosmetics, agric. wetting agents, heavy-duty liq. laundry detergents Features High foam cuts grease compat. with anionic, nonionic, cationic, and amphoteric surfactants... 

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