Sodium lignosulphonate

Fig. 6.92 Viscosity of cement pastes (w/c = 0.40) with plasticizers added a to the mixing water, b at various time after mixing, (according to [374]) 1—melamine resin, 2—calcium naphthalene sulphonate, 3—sodium lignosulphonate + phosphate ester, 4—sodium lignosulphonate -r sulpho-nated naphthalene (traces), T—no admixture...

Cartiere Burgo is an Italian producer of liquid and powder calcium, ammonium and sodium lignosulphonates from red pine, with capacity for about 40000 tons per year (solids basis) [37]. 

Dispersed Non-inhibited 1. Fresh water clay based fluids. Sodium chloride less than 1%, calcium ions less than 120 ppm a. Phosphate low pH (pH to 8.5) b. Tannin—high pH (pH 8.5-11+) c. Lignite d. Chrome lignosulphonate (pH 8.5-10)... 

S. V. Martyanova, A. A. Chezlov, A. G. NigmatuUina, L. A. Rskareva, and R. D. Shamsutdinov. Production of lignosulphonate reagent for drilling muds—by initial heating with sulphuric acid, condensation with formaldehyde, and neutralisation of mixture with sodium hydroxide. Patent RU 2098447-C, 1997. 

P. Ya. Zeltser. Plugging solution for oil and gas industry—contains plugging Portland cement, lignosulphonate(s), waste from formic acid production obtained at stage of decomposition of sodium formate, and water. Patent SU 1730431-A, 1992. 

Figure 21. Adsorption isotherms of sodium poly aery late, sodium ligno-sulphonate, ferrochrome lignosulphonate, and the copolymer PAA-AMES on bentonite at various ionic strengths. (Reproduced with permission from reference 78. Copyright 1993 Society of Petroleum Engineers.)...

Nippon Paper Chemicals is a Japanese producer of calcium, sodium and magnesium lignosulphonates encompassing a range of properties, including variations in molecular weights and degrees of sulphonation [36]. 

Chromium lignosulphonates (from sodium dichromate using lignosulphate waste)... 

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