摘要:
New polyamino-polyphosphonic-hydroxybenzenesulfonic acid compounds as the free acid or their alkali or alkaline earth metal salt. Specifically, the compounds are the mono- and di-(1,1-diphosphono-1-alkylaminomethyl)-4-hydroxybenzenesulfonic acid. These compounds are useful as corrosion inhibiting agents for metal/water applications.
摘要:
A method of preparing phosphonate compositions comprising di-(phosphonomethyl) formal is disclosed which comprises (a) forming an intimate mixture of hydroxymethylphosphonic acid and formaldehyde or its condensates, said mixture having a least about 0.5 equivalents of formaldehyde per equivalent of hydroxymethylphosphonic acid; and (b) subjecting said intimate mixture to a temperature of between about 100.degree. C. and 180.degree. C. for a time sufficient to allow the components to react to form a reacted mixture comprising di-(phosphonomethyl) formal. Di-(phosphonomethyl) formal, phosphonate compositions wherein at least about 20 more % of the phosphonate groups are present as di-(phosphonomethyl) formal, and phosphonate compositions which comprise hydroxymethylphosphonic acid and di-(phosphonomethyl) formal such that the mole ratio of phosphonate groups present as di-(phosphonomethyl) formal to phosphonate groups present as hydroxymethylphosphonate is at least about 1:3, as disclosed, may be used for corrosion inhibition in aqueous systems.
摘要:
Compounds of the formula ##STR1## wherein R.sup.60 is halogen, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, cyano, nitro, S(O).sub.n R wherein R is C.sub.1 -C.sub.4 alkyl and n is the integer 0, 1 or 2; and R.sup.61 through R.sup.66 are hydrogen or certain substituents, their salts, herbicidal compositions containing the compound or salts and the herbicidal use thereof.
摘要:
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.
摘要:
Compounds of the formula ##STR1## wherein R is halogen, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, cyano, nitro, S(O).sub.n R wherein R is C.sub.1 -C.sub.4 alkyl and n is the integer 0, 1 or 2; and R.sup.2 through R.sup.8 are hydrogen or certain substituents, their salts, herbicidal compositions containing the compound or salts and the herbicidal use thereof.
摘要:
Compounds of the formula ##STR1## wherein X is oxygen, sulfur or sulfonyl;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.m - wherein m is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are alkylene having 2 to 5 carbon atoms;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together are alkylene having 2 to 5 carbon atoms;R.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.c R.sup.d wherein R.sup.c and R.sup.d independently are hydrogen or C.sub.1 -C.sub.4 alkyl; (11) R.sup.e C(O)--wherein R.sup.e is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; or (12) --SO.sub.2 NR.sup.c R.sup.d wherein R.sup.c and R.sup.d are as defined; and (13) --N (R.sup.c)C(O)R.sup.d wherein R.sup.c and R.sup.d are as defined and their salts are useful as herbicides.
摘要:
Compounds of the formula ##STR1## wherein X is oxygen, sulfur or sulfonyl;R is halogen; C.sub.1 -C.sub.2 alkyl; C.sub.1 -C.sub.2 alkoxy; nitro; cyano; C.sub.1 -C.sub.2 haloalkyl; or R.sup.a SO.sub.m -- wherein m is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl;R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2 together are alkylene having 2 to 5 carbon atoms;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl;R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; orR.sup.3 and R.sup.4 together are alkylene having 2 to 5 carbon atoms;R.sup.5 and R.sup.6 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) --NR.sup.c R.sup.d wherein R.sup.c and R.sup.d independently are hydrogen or C.sub.1 -C.sub.4 alkyl; (11) R.sup.e C(O)-- wherein R.sup.e is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; or (12) --SO.sub.2 NR.sup.c R.sup.d wherein R.sup.c and R.sup.d are as defined; and (13) --N(R.sup.c)C(O)R.sup.d wherein R.sup.c and R.sup.d are as defined and their salts are useful as herbicides.
摘要:
A method of preparing compounds of the formula ##STR1## wherein R is alkyl, alkenyl, benzyl or aromatic, R.sup.1 is alkyl and X is halogen or nitro comprising reacting a compound of the formula ##STR2## wherein R.sup.1 and X are defined as above with a mercaptan having the formula R--SH in the presence of an inorganic base and a polar aprotic solvent.