King Fahd University of Petroleum and Minerals

King Abdulaziz City for Science and Technology

Saudi Arabian Oil Company

Shaikh Asrof Ali

Shamsuddeen Abdullahi Haladu

Hasan Ali Al-Muallem

Tawfik Abdo Saleh

Mohammad Abu Jafar Mazumder

Mohammed Abdulmajeed Al-Daous

Abdullah Raddad Al-Malki

Mohamed Elanany

Manal Al-Eid

Zakariyah Abdulkareem Jamiu

Tawfik Abdo Saleh Awadh

Sameer Ali Al-Ghamdi

Othman Charles Sadeq Othman Al Hamouz

Khalid Majnouni

Hassan Ali Al-Ajwad

Rashed Alessa

Megat A Rithauddeen

Khaled Mezghani

Mohamad Khalid Estaitie

Ihsan B Rachman

Nedal Y Abu-Thabit

Sayed Mohammed Javaid Zaidi

Othman Charles Sadeq Al-Hamouz

Nouri Mohammed Hassan

Shadi Adel

Lipiar Khan Mohammad Osman Goni

Ibrahim Yahia Yaagoob Mohamed

Chandrabhan Verma

Abdullah Al-Malki

A method for inhibiting corrosion of a metal article in contact with a solution including an acid includes adding to the solution a corrosion inhibitor in an amount of 1 to 500 parts per million (ppm) based on the total number of parts by mass of the solution, thereby adsorbing the corrosion inhibitor onto the surface of the metal article via at least one interaction to form a barrier layer in the form of a composite. The at least one interaction comprises a physisorption, a chemisorption, and a retro donation. The corrosion inhibitor has a formula (I) where n is any integer from 8 to 21 inclusive and R, R, R, R, and Rs are each independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an optionally substituted alkyl, an optionally substituted cycloalkyl, and an optionally substituted alkoxy.

Method for inhibiting corrosion of metal article

Copolymers having General Formula (I):  in which Rand Rare chosen from divalent C-Caliphatic groups and divalent C-Cheteroaliphatic groups, optionally substituted with one or more C-Caliphatic groups, heteroatoms independently chosen from O, N, and S, or combinations thereof, where the divalent C-Cheteroaliphatic groups of Rand Rinclude one or two heteroatoms independently chosen from O, N, and S, and the maximum number of heteroatoms in Ror Ris two, Ris chosen from Qand Q, x is a molar fraction range chosen from 0.1 to 0.9, y is a molar fraction range chosen from 0.1 to 0.9, and z is a molar fraction range chosen from 0 to 0.8, where the summation of x, y, and z equals 1. Methods for inhibiting formation of clathrate hydrates include contacting a fluid with at least one copolymer of General Formula (I).

Acryloyl-based copolymers, terpolymers, and use as hydrate inhibitors

Copolymers having General Formula (I): in which Ris chosen from divalent C-Caliphatic groups and divalent C-Cheteroaliphatic groups, optionally substituted with one or more C-Caliphatic groups, heteroatoms independently chosen from O, N, and S, or combinations thereof, where: the divalent C-Cheteroaliphatic groups include one or two heteroatoms independently chosen from O, N, and S, and the maximum number of heteroatoms in Ris two; x is a molar fraction range chosen from 0.05 to 0.95; and y is a molar fraction range chosen from 0.05 to 0.95, where the summation of x and y equals 1. Methods for inhibiting formation of clathrate hydrates in a fluid capable of forming the clathrate hydrates. The methods include contacting the fluid with at least one copolymer of General Formula (I) under conditions suitable for forming the clathrate hydrates.

Succinimide-based copolymers and use as hydrate inhibitors

Cross-linked polymer resins and related salts, solvates, tautomers or stereoisomers are described herein. The cross-linked polymer resins may comprise monomer units of N,N-diallyl aminoalkylphosphonate, a hydrophobic pendant, a tetraallylpiperazinium cross-linker, and sulfur dioxide. A method for producing the cross-linked polymer resins is described. The cross-linked polymer resins may be used as adsorbent materials for the removal of heavy metal ions and contaminant dyes from aqueous solutions. Used cross-linked polymer resins may be removed from solution, cleaned, and reused while maintaining adsorption capacity.

Crosslinked polymer resin for contaminant adsorption from water

Copolymers having General Formula (I): in which Rand Rare chosen from divalent C-Caliphatic groups and divalent C-Cheteroaliphatic groups, optionally substituted with one or more C-Caliphatic groups, heteroatoms independently chosen from O, N, and S, or combination thereof, where the divalent C-Cheteroaliphatic groups of Rand Rinclude one or two heteroatoms independently chosen from O, N, and S, and the maximum number of heteroatoms in Ror Ris two, Ris chosen from Qand Q, x is a molar fraction range chosen from 0.1 to 0.9, y is a molar fraction range chosen from 0.1 to 0.9, and z is a molar fraction range chosen from 0 to 0.8, where the summation of x, y, and z equals 1. Methods for inhibiting formation of clathrate hydrates include contacting a fluid with at least one copolymer of General Formula (I).

Copolymers having General Formula (I): in which R, R, and Rare chosen from Cto Caliphatic groups, Ris chosen from divalent Cto Clinear aliphatic groups and divalent Cto Clinear heteroaliphatic groups, optionally substituted with one or more C-Clinear aliphatic groups, C-Cbranched aliphatic groups, or combination thereof, R, R, and Rare each independently chosen from methyl or hydrogen, x is chosen from 0 to 0.8, y is chosen from 0 to 0.8, when y is 0, x is greater than 0, and when x is 0, y is greater than 0, and z is chosen from 0.1 to 0.9. The summation of x, y, and z equals 1. Methods for inhibiting formation of clathrate hydrates in a fluid capable of forming the clathrate hydrates, including contacting the fluid with at least one copolymer of General Formula (I).

Acrylamide-based copolymers, terpolymers, and use as hydrate inhibitors

Cross-linked tetrapolymers made up of different diallyl zwitterionic diallyl quaternary ammonium salt monomers, with one of them functioning as a cross-linking monomer. The cross-linked terpolymers include a repeating unit with multiple ligand centers that different metal ions can bind to. The cross-linked tetrapolymers are cationic, zwitterionic and anionic, and can be in either an acidic form or a basic form. A method of removing metal ions from an aqueous solution with these cross-linked tetrapolymers is also described.

Quaternary ammonium solvated tetrapolymers and methods of removing CR(III) from solution using the tetrapolymer

An aminoalkyl imidazolines of the formula: having p-octyloxy-, p-dodecyloxy-, or p-octadecyloxy-phenyl pendants as hydrophobes, for use to mitigate mild steel corrosion. An electron-rich aromatic ring, in conjugation with an amidine motif, imparts increasing corrosion inhibition efficiencies with an increasing hydrophobe chain length. X-ray photoelectron spectroscopy confirms the formation of an aminoalkyl imidazoline film on a metal surface prior to reaching a critical molar concentration.

Corrosion inhibition with alkoxy aromatic imidazolines

Cross-linked cyclopolymeric resins from N,N-diallyl quaternary ammonium monomers and tetrallylpiperazinium cross-linking monomer or salts, solvates, tautomers or stereoisomers as adsorbent materials for the removal of heavy metals from aqueous solution. A process for producing the cross-linked cyclopolymeric resins by Butler cyclocopolymerization of the monomers with a free radical initiator. The cross linked cyclopolymeric resins are polyzwitterionic or polyzwitterionic and dianionic and feature repeating units with multiple chelating centers that heavy metal ions can bind to. In addition, a method for removing heavy metals from aqueous solution via contacting and treatment with the cross-linked cyclopolymeric resins.

Cyclopolymeric zwitterion-dianionic resin and synthesis and uses thereof

2-(p-alkoxyphenyl)-2-imidazolines and their use as corrosion inhibitors

Cross-linked diallyl quaternary ammonium salt tetrapolymers and methods thereof

Cross-linked cyclocopolymers made up of one or more quaternary ammonium salts and sulfur dioxide as monomers. One of the quaternary ammonium salts is also an aspartic acid derivative. The cross-linked copolymers include a repeating unit with multiple chelating centers that different metal ions can bind to. The cross-linked copolymers are zwitterionic or anionic, and can be in either an acidic form or a basic form. A method for removing metal ions from an aqueous sample with these cross-linked copolymers is also described.

Method for removing heavy metals from an aqueous solution with cross-linked copolymers

Compounds and methods of inhibiting corrosion of mild steel. Compounds disclosed herein are cationic and contain multiple functional motifs such as propargyl, cinnamaldehyde, isoxazolidine and hydrophobe. These compounds are found to be effective in inhibiting mild steel corrosion in HCl, HSO, NaCl and CO-saturated environments.

Compositions for corrosion inhibition

Mild steel corrosion inhibitor compounds

A zwitterionic monomer and corresponding cyclopolymerized polyzwitterion (&#xb1;) (PZ) (i.e. poly(Z-alt-SO). Phosophonate ester hydroloysis in PZ gave a pH-responsive polyzwitterionic acid (&#xb1;) (PZA). The PZA under pH-induced transformation was converted into polyzwitterion/anion (&#xb1;&#x2212;) (PZAN) and polyzwitterion/dianion (&#xb1;=) (PZDAN).

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Dhahran, Saudi Arabia

Shaikh Asrof Ali