Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Maintaining environment nondestructive to metal
Patent
1988-11-09
1991-01-01
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Maintaining environment nondestructive to metal
422 7, 422 14, C23F 1116, C23F 1100
Patent
active
049816489
ABSTRACT:
A process is disclosed for inhibiting corrosion of an iron based metal in contact with the system water in an aqueous system, which comprises incorporating into the system water an effective amount of bis-phosphonic acid ethers selected from the group consisting of compounds having the formula (HO).sub.2 OP--R--(OR').sub.n --OR--PO(OH).sub.2 wherein each R is independently selected from the group consisting of methylene and ethylene, wherein R' is selected from the group consisting of methylene, ethylene and ethylene substituted with one or more methyl groups and wherein n is an integer from 0 to 4, and water soluble salts of said bis-phosphonic acid ethers. Advantageous corrosion inhibition using the bis-phosphonic acid ethers in combination with hydroxymethylphosphonic acid is also disclosed.
REFERENCES:
patent: 2535172 (1950-12-01), Tawney
patent: 2632767 (1953-03-01), Smith et al.
patent: 2900408 (1959-08-01), Blaser et al.
patent: 3032578 (1962-05-01), MacMullen et al.
patent: 3341467 (1967-09-01), Hwa
patent: 3429824 (1969-02-01), Tate
patent: 3431217 (1969-03-01), Hwa
patent: 3488289 (1970-01-01), Tate
patent: 3510436 (1970-05-01), Silverstein et al.
patent: 3532639 (1970-10-01), Hatch
patent: 3600470 (1971-08-01), Lewis
patent: 3714066 (1973-01-01), King et al.
patent: 3723333 (1973-03-01), Von Freyhold
patent: 3738806 (1973-06-01), Feiler
patent: 3803047 (1974-04-01), Hwa
patent: 3803048 (1974-04-01), Hwa
patent: 3837803 (1974-09-01), Carter et al.
patent: 3890228 (1975-06-01), Hwa et al.
patent: 3960576 (1976-06-01), Carter et al.
patent: 3970729 (1976-07-01), Walsh et al.
patent: 4003842 (1977-01-01), Suen et al.
patent: 4029696 (1977-06-01), Sommer et al.
patent: 4052160 (1977-10-01), Cook et al.
patent: 4056480 (1977-11-01), Herber
patent: 4069247 (1978-01-01), Kleiner
patent: 4085134 (1978-04-01), Redmore et al.
patent: 4092244 (1978-05-01), Suen et al.
patent: 4206075 (1980-06-01), Boffardi
patent: 4209487 (1980-06-01), Hogue et al.
patent: 4212832 (1980-07-01), Mitschke et al.
patent: 4246103 (1981-01-01), Block et al.
patent: 4276089 (1981-06-01), Moran
patent: 4416830 (1983-11-01), Morr et al.
patent: 4440646 (1974-04-01), Budnick
patent: 4465516 (1984-08-01), Danner et al.
patent: 4717542 (1988-01-01), Mitchell
patent: 4719031 (1988-01-01), Coleman
patent: 4911887 (1990-03-01), Carter
J. S. Amato et al., "A New Preparation of Chloromethyl Methyl Ether Free of Bis[chloromethyl] Ether", Synthesis, 970-971, (1979).
T. H. Chan et al., "Unexpected Site Selectivity of Halotrimethylsilane with 2,5-Dimethoxytetrahydrofuran and 2,6-Dimethoxytetrahydropyran", Tet. Lett., 24, 1225-1228, (1983).
Griffiths et al., "The Reaction of Phosphorus Trichloride and Paraformaldehyde", Phosphorous, 6, 223-230, (1976).
K. A. Petrov et al., "Synthesis and Properties of (Substituted Methyl) Phosphonates", Zhur. Obschchei. Khim., 12, 2741-9, (1977), (1978 Translation Plenum Publishing Corp., 2494-2501).
D. P. Phillion et al., "Synthesis and Reactivity of Diethyl Phosphonomethyltriflate", Tet. Lett., 27, 1477-1480, (1986).
D. Redmore, "Heterocuclic Systems Bearing Phosphorus Substituents. Synthesis and Chemistry", Chem. Rev., 71, 315-337 (1971) and Table III.
L. Maier et al., "Organic Phosphorus Compounds. 70. Preparation and Properties of New Phosphorus Containing Chelating Agents for Calcium and Magnesium Ions", Phosphorous and Sulfur, 5, 45-51, (1978).
Chem. Abstracts, vol. 96, entry 183846E, (1986); Stulli et al.: "Effect of Complexing Agents on the Properties of Synthetic Cutting Fluids", Khim. Tekhnol. Topl. Masel.
Chem. Abstracts, vol. 95, entry 61756j, (1981)--Jupe et al., "Polyhydric Phenols", Ger. Offen., 2,942,366.
D. A. Nicholson et al., "A Convenient Method of Esterfication of Polyphosphonic Acids", Journal of Organic Chemistry, 35, 3149-3150, (1970).
Chemical Abstracts, vol. 37, cols. 3048-3049, (1943), V. S. Abramov et al., "Action of Dibromomethyl and Dichloromethyl Ethers on Ethyl Phosphite and Sodium Diethyl Phosphite".
Chemical Abstracts, vol. 55, col. 6367, (1961), K. A. Petrov et al., "Diphosphonates. III. Synthesis of O- and S-Diphosphonates", Zhur. Obshchei Khim., 30, 1960-64, (1960).
Chemical Abstracts, vol. 56, cols. 11418-11419, (1962), W. Treibs et al., "Autooxidation in the Presence of Alcohols and Protons III. Autooxidation of Cyclenes, Hydroarenes, and Hydroheterocycles", Chem. Ber., 94, 2983-2989, (1961).
Chemical Abstracts, vol. 58, cols. 6866-6868, (1963), S. Julia et al., "Sythesis of Substituted .alpha.- and .beta.-Cyclohomocitrals and the Corresponding Ketones and Alcohols", Bull. Soc. Chim. Grance, 1952-1959, (1962).
Stauffer Chemical Company, Flame Retardant Chemical Product Data--Hydroxymethyl Phosphonic Acid.
Stauffer Chemical Company, Material Safety Data Sheet, Hydromethylphosphonic Acid.
Carter Charles G.
Kumar Ranjit
Barr James P.
Trembley Theresa A.
W. R. Grace & Co.,-Conn.
Warden Robert J.
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