Antiredeposition agent

Antirachitic vitamin Antiredeposition agents Antirust additives Antiscaling additives Antiscorbutic vitamin Antiseize material Antisense agents Antisense DNA... 

Antiredeposition agents contribute to the appearance of washed fabrics. Sodium carboxymethylceUulose [9004-32-4], NaCMC is the most widely used, and on cotton fabrics, the most effective. With the advent of synthetic fabrics, other cellulose derivatives, eg, methylceUulose [9004-67-5], hydroxybutjiceUulose, hydroxypropyl- and mixed methyl and hydroxybutyceUulose ethers have been shown to be more effective than NaCMC (8) (see... 

Soil Antiredeposition Agents, Soil Repellent/Soil Release Agents... 

Do not use ester-based antiredeposition agents for applications under high temperature or alkaline conditions, since they will hydrolyze. 

The addition of fragrance, dye, optical brightener, antiredeposition agent, corrosion agent, corrosion inhibitor, etc., i s opti onal. 

Carboxymethyl)inulin acts as a polyelectrolyte that can be used as a dispersing agent or metal ion carrier. Carboxymethyl cellulose, for instance, is used as an antiredeposition agent in detergents, in the oil, paper, textile, and mining industries, and as a thickener in foods and drug preparations. Hundreds of thousands of tons of the latter are used per year. 

Similar chelating properties are exhibited by the following agents (see also Ref. 36) scale inhibitors, sequestering agents, water softeners, surfactants, peroxide. stabilizers, soil antiredeposition agents, well-drilling needs,- etc. 

The carboxymethyl cellulose (CMC) derivatives and carboxymethyl starch (CMS) are effective antiredeposition agents that are cellulose-containing fibers such as cotton and blends of cotton and synthetic fibers. However, CMC has virtually no effect on pure synthetic fibers. Other effective antiredeposition agents and soil repellents have been developed (Fig. 5.4) [20]. 

Carboxymethylcellulose (CMC) has also been widely utilized as an antiredeposition agent for cotton fabrics. It functions by forming a protective layer on the surface of the cellulosic fibers. However, the low aqueous solubility greatly limits its use in unstructured liquids. 

Adsorption in similar fashion of other bath components onto the substrate or soil can also produce electrical and steric barriers to the close approach of soil particles to the substrate, thus inhibiting or preventing the redeposition of soil particles. Special components, called soil release agents or antiredeposition agents, are often added to the bath for this purpose. These are generally polymeric materials that by adsorption onto the fabric or soil produce a steric and sometimes also an electrical barrier to the close approach of soil particles (Trost, 1963). 

The extent of solubilization of the oily soil depends on the chemical structure of the surfactant, its concentration in the bath, and the temperature (Chapter 4, Section IB). At low bath concentrations only a relatively small amount of oily soil can be solubilized, whereas at high surfactant concentrations (10-100 times the CMC), solubilization is more similar to microemulsion formation (Chapter 8, Section II) and the high concentration of surfactant can accommodate a much larger amount of oily matter (Schwartz, 1972). With ionic surfactants, the use concentration is generally not much above the CMC consequently, solubilization is almost always insufficient to suspend all the oily soil. When insufficient surfactant is present to solubilize all the oily soil, the remainder is probably suspended in the bath by macroemulsification Antiredeposition agents, such as the POE terephthate polyesters mentioped in Section 1 above, help prevent redeposition of suspended oily soil particles. 

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