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Admixtures dispersing agents

Wood consists of 40-50% cellulose, 20-30% hemi-celluloses, 21-23% lignin, 0.2-0.5% protein, and 1-5% mineral matter, which is left behind as ash when the wood is burned. Besides its straightforward use as timber, much wood is pulped for use in papermaking. Lignin is extracted in the process by either sulfonation or chlorination. Sulfonation produces lignosulfonates, which are widely used as dispersing agents, for example as chemical admixtures for concrete to disperse the cement particles (see the section on Cement and Concrete Admixtures, below). [Pg.314]

Figure 12.11 Rate of dyeing curves for Cl Disperse Blue 56 and Yellow 42 in admixture on polyester at various concentrations of a nonylphenol 20 EO levelling agent [107]... Figure 12.11 Rate of dyeing curves for Cl Disperse Blue 56 and Yellow 42 in admixture on polyester at various concentrations of a nonylphenol 20 EO levelling agent [107]...
Water reducers and superplasticizers. Admixtures aimed at increasing the workability of concrete are chemical substances that improve the mobihty of the particles in the fresh concrete mix by increasing the effectiveness of the mixing water. They contain surface-active agents that are adsorbed on the surface of solid particles and modify their electrical surface charge, so that they do not tend to flocculate, and thus are more dispersed, and the water can better lubricate the mix. [Pg.196]

Hubei Aging Chemical Company China Lignosulfonates Additives for concrete admixtures, feed, leather reinforcing agents for refractory material asnd ceramics Dispersants for fertilizers, pesticides... [Pg.300]

Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and irritating fumes Uses Dispersant emulsifier emulsion stabilizer wetting agent binder gypsum board industrial use refractories construction insecticides pesticides extender for adhesives and binder systems dispersant for water treatment, oil-well drilling muds concrete admixtures emulsifier in cosmetics dispersant, stabilizer for pesticides for pre- or post-harvest applic. to bananas in food-pkg. adhesives in paper/paperboard in contact with aq./fatty foods defoamer in food-contact paper/paperboard... [Pg.689]

Uses Detergent, emuisifier, dispersant for industriai appiics. detergent for food-ware, food processing machines foaming agent for concrete admixtures Properties Paste 50% act. [Pg.654]

Uses Dispersant, wetting agent for contaminant controi in puip and paper, paint strippers super piasticizer in concrete and concrete admixtures Properties Gardner 13 max. ci. iiq. pH (10% soi n.) 9.0-10.5 40% min. act. Storage 548 day sheif iife Rhodacal SS40/A [Rhodia Novecare]... [Pg.928]

Uses Dispersant, wetting agent for wettable powds., agric. chems., concrete admixtures, dyes, gypsum wallboard, high-strength cements, pigment slurries and disps., and water treatment chemicals... [Pg.1416]

Superplasticisers Also called water-reducing agents-, chemical admixtures used to disperse particles homogeneously. In concrete or mortar... [Pg.507]

See other pages where Admixtures dispersing agents is mentioned: [Pg.144]    [Pg.421]    [Pg.132]    [Pg.315]    [Pg.336]    [Pg.307]    [Pg.356]    [Pg.96]    [Pg.338]    [Pg.446]    [Pg.552]    [Pg.334]    [Pg.244]    [Pg.335]    [Pg.428]    [Pg.639]    [Pg.336]    [Pg.97]    [Pg.98]    [Pg.504]    [Pg.118]    [Pg.113]    [Pg.435]    [Pg.181]    [Pg.517]    [Pg.1416]   
See also in sourсe #XX -- [ Pg.511 ]



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