Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1994-04-29
1997-07-15
Hruskoci, Peter A.
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
210700, 210701, 252180, C02F 514
Patent
active
056479956
ABSTRACT:
An improved method is disclosed for the preparation of novel alkali metal diphosphinate salts by the reaction of an acetylenic compound with an alkali metal hypophosphite in the presence of a free radical source, the use of these novel compounds in further reactions to prepare diphosphonate compounds and diphosphinate containing adducts, oligomers and polymers and utilization of these compounds, polymers and oligomers to control calcium carbonate scale and mild steel corrosion in cooling water.
REFERENCES:
patent: 2724718 (1955-11-01), Stiles et al.
patent: 2957931 (1960-10-01), Hamilton et al.
patent: 3617576 (1971-11-01), Kerst
patent: 3681481 (1972-08-01), Lin
patent: 4159946 (1979-07-01), Smith et al.
patent: 4246103 (1981-01-01), Block et al.
patent: 4457847 (1984-07-01), Lorenc et al.
patent: 4497713 (1985-02-01), Geiger
patent: 4590014 (1986-05-01), Wolf et al.
patent: 5085794 (1992-02-01), Kneller et al.
patent: 5167828 (1992-12-01), Emmons et al.
patent: 5386038 (1995-01-01), Davis et al.
Nifantev, E.E. et al "Reactions of Acetylene with Hypophosphorous and Phosphorous Acids" zh. Obshch. Khim 56, 773-781 (1986); C.A. 105, 226805 (1986).
Rauhut, M., Currier et al, "The Free Radical Addition Phosphines to Unsaturated Compounds" J.Org.Chem.26, 5138 (1961).
Pudovik, A., Konovalova, I, "Addition Reactions of Esters of Phosphorous III Acids with Unsaturated Systems" Synthesis 1979, [2], 87.
105:226749z Hydrophosphorylation of alkynes with phospinous acids. Nifant'ev, E.E.; Solevetskaya, L. A.; Magdeeva, R. Zh. Obshch, Khim. 1985, 55(10), 2263-9.
108:167564x Hydrophosphorylation of substituted alkynes by phosphinic acids, Nifant'ev, E.E.; Solovetskaya, L.A.; Maslennikova, V.I.; Sergeev, N.M., 1987, 57(3), 514-19.
Sanders, B. & Simpson, P., "Esters Containing Phosphorus, Part XVIII. Esters of Ethynlphosphonic Acid," J.Chem. Soc. 1963, 3351.
Pudovik, A. et al "New Method of Synthesizing Esters of Phosphine and Thiophosphinic Acids. Part XXXI. Addition of Phosphorous Hypophosphorous Acids, Dialkylphosphorous Acids and Phosphonoacetic Esters to Maleic Esters", Zh. Obschch. Khim 29, 3338-42 (1959), English version.
Okamato, Y. & Sakurai, H., "Addition Reactions of Phosphorous Acid and Hypophosphorous Acid to Olefins" Kogyo Kogaku Zasshi, 68 (11), 2080-2083 (1965). English.
Herranz, A. "New Surfactants Phosphorus Derivatives: Sodium Alkylphosphinates" Tenaide Detergents, 18 (4) 190-193 (1981).
Herranz, C., "Alkylphosphinic Surfactants with C14-C16 Chain" J.A. O.C.S., 64 (1) 1038-39 (1987).
Johnson Donald A.
Khambatta Binaifer S.
Kneller James F.
Narutis Vytas
Drake James J.
Hruskoci Peter A.
Miller Robert A.
Nalco Chemical Company
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