Amidopropyl betaines

RAW MATERIALS Ampholyt JB130 CHEMICAL DESCRIPTION Coconut fatty acid amidopropyl betaine SOURCE Hul S... 

N-(Cocoamidopropyl)-N,N-dimethyl-N-carboxymethyl ammonium, betaine N-(3-Cocoamidopropyl)-N,N-dimethyl-N-carboxymethylammonium hydroxide, inner salt Coconut oil amidopropyl betaine Cocoyl amide propyidimethyl glycine 1-Propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-, N-coco acyl derive., hydroxides, inner salts... 

Coconut oil alkyl-1,3-propylenediamine diacetate. See Cocodiamine acetate (Coconut oil alkyl) trimethylammonium methyl sulfate. See Cocotrimonium methosulfate Coconut oil amides. See Cocamide Coconut oil amidopropyl betaine. See Cocamidopropyl betaine Coconut oil fatty acids. See Coconut acid Coconut oil fatty acids, hydrogenated. See Hydrogenated coconut acid Coconut oil fatty acids, sodium salt. See Sodium cocoate... 

Undecylenic amidopropyl betaine combines the antimicrobial activity of the undecylenic moiety with surface-active properties. Since this betaine acts as a mild active, selectively against Malassezia furfur, it is an interesting raw material for the formulation of antidandruff shampoos (22). 

Aqueous solutions of dimer amidopropyl betaine are highly viscous, and are typically non-flowable above a betaine actives concentration of 5 wt%. They display interesting rheological phenomena (25). To achieve higher concentrations for shipment of this Gemini betaine, mixtures with cocamidopropyl betaine can be made. On this basis, concentrations of 25 wt% active matter are achievable. Dimer amidopropyl betaine shows an increased substantivity, compared to cocamidopropyl betaine, on fibres and is a very effective irritancy miti-gant in anionic-surfactant-based systems. 

Due to the availability of only limited analytical methods at the time of their market introduction, it was assumed that these surfactants also possessed the cyclic structure of the precursor (4). In later years, it turned out that they are more correctly described by an open-chain structure (30, 31). In contrast to the well-defined composition of amidopropyl betaines, aminoethylethanolamine-derived amphoterics often are complex mixtures of different types of compounds and impurities. The composition of the mixtures varies with the production parameters. 

Amidopropyl betaines, when used as secondary surfactants in anionic surfactant systems, respond quickly with viscosity when salts or alkanolamides are added. 

Amidopropyl Betaines Sulfoamidobetaines Sulfatobetaines Sulfobetaines Alkyl betaines Propionates Amphoacetates Fair... 

Alkyl amido betaines are the most common of the betaine types. They have become the most important type of secondary surfactant, specially cocamidopropyl betaine (CAPB) [18]. It can also be referred to as coco fatty acid amidopropyl betaine [19]. Thus, combining primary surfactants with CAPB reduces skin and mucus membrane irritation [20,21], improves the conditioning properties of hair shampoos [22,23], and produces a pleasant, smooth skin feel. Formulas that include CAPB thicken more easily, develop better foam, and give a better cleansing performance than formulas without CAPB [24]. 

By spray-drying aqueous betaine solutions, it is possible to obtain highly concentrated betaine products, typically consisting of 80-85% fatty acid amidopropyl betaine, 13-15% sodium chloride, and 0.3-3.0% water. Spray-drying typically uses betaines with low Cg/Cjo alkyl components (J. Venzmer, personal communication, 1996). 

The methods for producing fatty acid amidopropyl betaines basically foUow a scheme that has shown validity for some time. Forming the fatty acid amide is the first step (Figure 12.9) carboxy-methylating the amide is the second step (Figure 12.10). 

Betaines with specialized fatty acid compositions can also be made, including lauric acid amidopropyl betaine, caprylic/capric acid, amidopropyl betaine, and betaines from topped fatty acids that contain none or only very few short-chain components, typically the Cg or Cjo fractions. 

Amidopropyl betaines exhibit features that include all the bands referred to for alkyl betaines, plus typical secondary amide bands at 1640 and 1550 cm" (amide II). The spectrum also contains N-H stretches at 3300 and 3100 cm" (Figure 10.27). 

Lin and Shu (2000) Lauryl amidopropyl betaine Cosmetic toiletry products LC CE... 

Chem. Descrip. Milk lipid amidopropyl betaine Ionic Nature Amphoteric... 

Trade Names Containing C-101 C-1218D C-1218DH n-CaprIc acid. See Capric acid Capric acid aluminium salt. See Aluminum caprate Capric acid diethanolamide. See Capramide DEA Capric acid methyl ester. See Methyl caprate Capric acid, monoester with diglycerol. See Polyglyceryl-2 caprate N-Capric acid, sodium salt. See Sodium caprate Capric alcohol. See Decyl alcohol Capric/caprylic amidopropyl betaine Ionic Nature Amphoteric Uses Surfactant... 

Lexaine CG-30 Milk lipid amidopropyl betaine Proleric CDX-38 Solec A... 

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