Described herein are the methods of using a cationic alkyl polyglycoside in a corrosion control composition to reduce corrosion for metal surfaces in a water system. The described methods or compositions are found to be effective than those methods or compositions including commonly used corrosion inhibitors for water systems.

Described herein are the methods of using a cationic alkyl polyglycoside in a corrosion control composition to reduce corrosion for metal surfaces in a water system. The described methods or compositions are found to be effective than those methods or compositions including commonly used corrosion inhibitors for water systems.

The present invention provides a novel metal corrosion inhibitor containing a compound having a specific structure. The present invention relates to a metal corrosion inhibitor including a compound (X) including one molecule of a mercaptocarboxylic acid or a mercaptocarboxylic acid salt; one molecule of acrylic acid, an acrylic acid salt, or an acrylic acid ester; and one molecule of a monomer (B) represented by the following formula (1), which are bonded to each other: ##STR00001##

Methods for preventing, inhibiting, or reducing metal (e.g. mild steel) corrosion in aqueous media utilizing a water-soluble formulation having a polyurea pre-dissolved in a polar aprotic solvent are described. The polyurea contains reacted units of a diisocyanate and a diaminoalkane. The effectiveness of the methods is demonstrated by corrosion inhibition efficiency and corrosion rate of metallic substrates in aqueous acidic environments using the water-soluble formulation.

Disclosed herein are corrosion control compositions comprising one or more multiple charged cationic compounds to reduce corrosion of metal surfaces in a water system. The multiple charged cationic compounds are derived from polyamines through a ring-opening reaction with an epoxide or two reactions: an aza-Michael addition with an activated olefin having a cation group and a ring-opening reaction with an epoxide. The disclosed compositions are found to be effective corrosion inhibitors for water systems.

Disclosed herein are corrosion control compositions comprising one or more multiple charged cationic compounds to reduce corrosion of metal surfaces in a water system. The multiple charged cationic compounds are derived from polyamines through a ring-opening reaction with an epoxide or two reactions: an aza-Michael addition with an activated olefin having a cation group and a ring-opening reaction with an epoxide. The disclosed compositions are found to be effective corrosion inhibitors for water systems.

Aspects of the present disclosure relate to Schiff base oligomers and uses thereof. In at least one aspect, an oligomer is represented by Formula (I) wherein each instance of R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.10, R.sup.11, R.sup.12, R.sup.13, and R.sup.14 is independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxyl, aryloxyl, ether, and heterocyclyl. Each instance of R.sup.9 of Formula (I) is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, and ether. Each instance of R.sup.28 and R.sup.29 of Formula (I) is independently selected from the group consisting of hydrogen, alkyl, and aryl. Each instance of R.sup.33 of Formula (I) is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, and a bond. Each instance of R.sup.41 of Formula (I) is independently —NH— or a bond and each instance of R.sup.40 is independently —NH— or —NH—NH—.

A natural liquid composition is provided for disinfectant, antibacterial or anticorrosion applications. The natural liquid composition is an electrospun solubilized composition of natural chitosan (CS) and an FDA approved polymer polyvinyl alcohol (PVA). Two fillers, citric acid (CA) and ascorbic acid (AA), added anti-corrosion property to the composite nanofiber solution without affecting the other properties (disinfectant and antibacterial) and have a final synergistic effect of all components together in a final solution form. Embodiment of the invention advances the art by providing a natural solution to overcome at least some of the problems with the currently used agents.

A natural liquid composition is provided for disinfectant, antibacterial or anticorrosion applications. The natural liquid composition is an electrospun solubilized composition of natural chitosan (CS) and an FDA approved polymer polyvinyl alcohol (PVA). Two fillers, citric acid (CA) and ascorbic acid (AA), added anti-corrosion property to the composite nanofiber solution without affecting the other properties (disinfectant and antibacterial) and have a final synergistic effect of all components together in a final solution form. Embodiment of the invention advances the art by providing a natural solution to overcome at least some of the problems with the currently used agents.

Aspects of the present disclosure relate to Schiff base oligomers and uses thereof. In at least one aspect, an oligomer is represented by Formula (I) wherein each instance of R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.10, R.sup.11, R.sup.12, R.sup.13, and R.sup.14 is independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxyl, aryloxyl, ether, and heterocyclyl. Each instance of R.sup.9 of Formula (I) is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, and ether. Each instance of R.sup.28 and R.sup.29 of Formula (I) is independently selected from the group consisting of hydrogen, alkyl, and aryl. Each instance of R.sup.33 of Formula (I) is independently selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, and a bond. Each instance of R.sup.41 of Formula (I) is independently —NH— or a bond and each instance of R.sup.40 is independently —NH— or —NH—NH—.