摘要:
This invention relates to .alpha.-1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof in inhibiting scale formation in aqueous systems.
摘要:
This invention relates to novel di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids; the preparation thereof; and uses thereof.
摘要:
Diels-alder adducts of dihydro-nitrogen heterocyclic phosphoramidates of the general formula ##STR1## where ##STR2## represents a dihydro-nitrogen ring, R is a substituted group, preferably hydrocarbon, X is O or S, and R.sub.1 is an alcohol or phenolic moiety, preferably hydrocarbon; the preparation and uses thereof particularly as corrosion inhibitors, microbiocides, etc.
摘要:
The invention disclosed relates to organo-phosphonic acid compounds in combination with azole compounds and zinc salts for use to inhibit metal corrosion in aqueous systems. The organophosphonic acid compounds include alkylene polyphosphonic acids, and the water-soluble salts and esters thereof.
摘要:
Semiconductor processing compositions for use with silicon wafers having an insulating layers and metalization layers on the wafers comprising water and one or more Troika acids which is also referred to as α,α-disubstituted trifunctional oximes or α-(Hydroxyimino) Phosphonoacetic acids, their salts, and their derivatives.
摘要:
A novel cleaning composition used for post-etch resist residue removal is disclosed. In contrast to the conventional cleaning solutions based on fluoride chemistries, the present invention can significantly reduce the oxide loss resulting from the exfoliation, while still providing an excellent cleaning efficiency.
摘要:
Process for removing deposits from water-carrying systems and devices for water supply, or from their individual parts, in which the deposits are dissolved by means of an aqueous treatment solution and removed in dissolved form from the system or the device or their individual parts, wherein the deposits are dissolved by means of an aqueous treatment solution comprised of a combination of (i) a reducing agent, in particular in the form of a slat-like, reducing sulfur-oxygen compound, nitrogen-oxygen compound or phosphorous-oxygen compound, and (ii) a complexing agent having phosphonic acid groups or phosphonate groups or a complexing agent of the hydroxy acid type at pH values in the range of approximately 4.5 to 9.5, in particular from approximately 6.0 to 8.0.
摘要:
Disclosed are compositions comprising the reaction products of poly(oxyalkylated) hydrazine and at least one compound selected from the group consisting of phosphorylation agents, thiophosphorylation agents, and mixtures thereof; wherein the poly(oxyalkylated) hydrazine has the formula: ##STR1## wherein each R is individually selected from hydrogen, lower alkyl groups having 1 to 4 carbon atoms, phenyl and mixtures thereof; the sum of w, x, y and z is from about 4 to about 25, and wherein the mole ratio of said poly(oxyalkylated) hydrazine to said compound being from about 0.1:1 to about 10:1. These compositions are shown to be effective corrosion inhibitors in corrosive aqueous solutions such as brines and acid metal-treating baths.