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Friday, December 11, 2009

Dec. 2 Formulation Post Update

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fabric conditioner in basketI will update the ingredient links of the December 2 post:  Five Fabric Softener Formulation Comparison
   

    Calcium Chloride (viscosity reducer)
    Accosoft 501 (fabric softener   quaternary)
    Arquad 2HT 75 (cationic surfactant)
    Miranol DM (anti-static/softening effects)
    Surfadone LP-300 (surfactant)
   
Surfadone LP-100 (surfactant)
   
Adogen 442 (cationic surfactant)
    Integra 44 (biocide)
   

Accosoft 501, Arquat 2HT 75, and Adogen 442 are the fabric conditioning agent.


Early fabric softener formulas were relatively simple dispersions of fatty materials that would deposit on the fabric fibers after washing. One of the most common ingredients used was dihydrogenated tallow dimethyl ammonium chloride (DHTDMAC), which belongs to a class of materials known as quaternary ammonium compounds, or quats. This kind of ingredient is useful because part of the molecule has a positive charge that attracts and binds it to negatively charged fabric fibers. This charge interaction also helps disperse the electrical forces that are responsible for static cling. The other part of the molecule is fatty in nature and it provides the slip and lubricity that makes the fabric feel soft.

While these quats do soften fabrics very effectively, they also can make them less absorbent. This is a problem for certain laundry items such as towels and diapers. To overcome this problem, modern formulations use quats in combination with other more effective ingredients. These newer compounds have somewhat lower substantivity to fabric which makes them less likely to interfere with water absorption.
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