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- Keyword
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- Chemistry (18)
- Botany, Microbiology and Zoology (7)
- 3-D]; pyrimidine derivatives (1)
- Aluminum; KIO3; SEM; EDS; optical microscopy; Corrosion inhibitor (1)
- Amino acid and Dipeptide Derivatives; N-Phenylmaleimide; N-phenylsuccinimde; N-Phenylcamphorimide (1)
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- Antimicrobial assay; medicinal plants; Anti-infective plant extracts (1)
- Antimony; oxide film; Corrosion (1)
- BENZOFURANYL THIENO[2 (1)
- Conductivity; Association constant; alkaline–earth metal; succinate; malate; tartrate; aqueous solution (1)
- Corrosion inhibitor; ethoxylation; plastic waste (1)
- DIFFERENT LEVELS; NITROGN; PHOPHORUS; Cuminum cyminum L (1)
- Drugs; inhibitors; Aluminum; HYDROCHLORIC ACID (1)
- ECOLOGICAL STUDY; WADI HASANAT; SALAH DISTRICT; Taiz (1)
- Electrophoresis; Fat Sand Rat; Psammomys obesus (1)
- Electropolymerization; BITHIOPHENE; 3-METHYLTHIOPHENE; relaxation studies (1)
- Electropolymerization; relaxation studies; polythiophene; conducting; polymer; film; Building (1)
- IL10; TNF-alpha; NO; Metronidazole (1)
- MDA; IL-10; TNF; alpha; Allicin; Piperazine Citrate (1)
- NITROGEN HETEROCYCLES; Coumarin (1)
- Physicochemical; HYDRAZONE COMPLEXES (1)
- Polyesteramide; Surface coating; Biological Activity; antimicrobial varnishes growth control; Toluene sulfonamide (1)
- Polyesteramide; Surface coating; Corrosion inhibiting; polyethylene glycol; Anticorrosive varnish (1)
- Pyrazoloimidazole; pyrazolopyrimidine; pyrazolone (1)
- Pyrazoloimidazole; pyrimidinedione; triazine; Antimicrobial; antitumor (1)
- Tantalum; INDICATOR ELECTRODE; POTENTIOMETRIC TITRATIONS (1)
- Thermoalkalophilic bacteria; Lipase; physiology (1)
- Thiazole; THIOPHENE; THIENOPYRIDINE; THIENOPYRIMIDINE TOSYL MOIETY (1)
- VIBRATIONAL SPECTRUM; Thermodynamic; pyridazine (1)
Articles 1 - 25 of 25
Full-Text Articles in Life Sciences
Studies On The Induction Of Lipase(S) By Thermoalkalophilic Bacillus Brevis B2, Eglal Ghoneimy, Reda Bayoumi, Sanaa Ahmed, Nahid Younis, Ola El-Hager
Studies On The Induction Of Lipase(S) By Thermoalkalophilic Bacillus Brevis B2, Eglal Ghoneimy, Reda Bayoumi, Sanaa Ahmed, Nahid Younis, Ola El-Hager
Al-Azhar Bulletin of Science
Bacillus brevis-B2 was selected as the most patent lipase(s) producer among nine thermoalkalophilic bacterial isolates isolated from agro industrial wastes at 70oC and pH 10.5. Of the tested nutrient medium, tap water containing 1% fish wastes and 1% yeast extract is the best inducer for lipase synthesis by B. brevis B2. Maximum enzyme biosynthesis could be obtained after 24 hr of incubation. The optimal pH and temperature for enzyme formation are 11.5 and 70oC. Enzyme yield increased in presence of sucrose or lactose in the nutrient medium, also the presence of 100 ppm zinc sulphate and 500 ppm folic acid …
Effect Of Different Levels Of Nitrogn, Phophorus And Potassium On Growth , Yield And Chemical Composition Of Cumin (Cuminum Cyminum L.) Plant Grown Under Sinai Conditions., Samira Tahoon
Al-Azhar Bulletin of Science
Field experiments were carried out at El-Shiekh Zowayed of North Sinai Governorate. The study included the application of three different types of chemical fertilizers namely; ammonium sulphate, potassium sulphate and calcium super phosphate. The First and second fertilizers were applied at three different levels, whereas the third was applied at only one level. The study investigates the effect of interaction between the three fertilizers. Thus, a combination between the three fertilizers at the three applied levels was added to a reclaimed sandy soil. Cumin (Cuminum cyminum L.) fruits were cultivated in treated and untreated sandy soils at 15 November in …
Immune Induction By Natural Product And Piperazine Citrate Drug In Rats Infected With Ascaris Lumbricoides, Adham Sadiq
Immune Induction By Natural Product And Piperazine Citrate Drug In Rats Infected With Ascaris Lumbricoides, Adham Sadiq
Al-Azhar Bulletin of Science
Ascaris lumbricoides remains the most common intestinal nematode in the world. The cytokine are considered the arm of the adaptive immune system is mediated by T helper cells (Th1and Th2) and related cytokines, including interferon (IFN)-γ and tumor necrosis factor (TNF)-α, and has been reported to play a pivotal role in the control of many parasites . This study investigates the antihelmintic effect of natural product (Allicin garlic) extracts and also synthetic drugs (Piperazine Citrate ). Our target was to study the effect of natural and synthetic drugs on immune induction of infected rats by Ascaris lumbricoides . Ninety male …
Antimicrobial Evaluation Of Some Medicinal Plants Used In Egypt Traditional Medicine, Gamal El-Sherbiny
Antimicrobial Evaluation Of Some Medicinal Plants Used In Egypt Traditional Medicine, Gamal El-Sherbiny
Al-Azhar Bulletin of Science
Ten methanolic, petroleum ether and water plant extracts from botanical species used in traditional medicine in Egypt to cure different diseases have been subject to a screening study to detect the potential antimicrobial activity of their extracts against Bacillus subtilis, Staphylococcus aureus, Escherichia coli Pseudomonas aeruginosa, Candida albicans and Aspergillus niger. The antimicrobial activity of the extracts were evaluated using colonies growing on solid medium, establishing the minimal concentration required to inhibit their In Vitro growth (MIC). The results revealed that the extracts from the plants under study using methanol exhibited strong antimicrobial activity than that of petroleum ether or …
Evaluation Of Immune Responses In Children Infected With Entamoeba Histolytica After Treatment With Metronidazole, Adham Sadiq
Evaluation Of Immune Responses In Children Infected With Entamoeba Histolytica After Treatment With Metronidazole, Adham Sadiq
Al-Azhar Bulletin of Science
This study was designed to evaluate the immune responses in children infected with E. histolytica after treatment with metronidazole. Immunological evaluation was performed by measurement of secreted cytokines (interleukin, IL-10-tumor necrosis factor-α in blood of children, on the other hand E. histolytica cyst output in children stool was measured. The present investigation is directed to study the therapeutic effect of different doses of metronidazole a treatment known for controlling of E. histolyticainfection in children. The children infected with E. histolytica were divided into three group according to the dose of metronidazole(Flagyl syrup). The 1st, second and third group were treated …
Surface Investigations Of Aluminum In 2m Hydrochloric Acid Solution In The Presence Of Potassium Iodate Inhibitor, A. El Maghraby
Surface Investigations Of Aluminum In 2m Hydrochloric Acid Solution In The Presence Of Potassium Iodate Inhibitor, A. El Maghraby
Al-Azhar Bulletin of Science
The results of investigations by using optical, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) to study the surface morphology, the composition of adsorbed film formed on the surface of aluminum samples in 2M hydrochloric acid solution containing ppm optimum KIO3 dose. The data reveal that the additive improves the surface morphology of aluminum, due to the marked layer enrichment of Al- surface by inhibitor components. Detailed studies were carried out to investigate the effect of oxygen in the inhibition process. The nature and strength of the passive film and the mechanism of its formation are explained based …
Various Modified Polyesteramide Varnishes As Antimicrobial Growth Control., M. Mostafa, A. Naser, F. Abdel-Hai, H. Abd El-Wahab
Various Modified Polyesteramide Varnishes As Antimicrobial Growth Control., M. Mostafa, A. Naser, F. Abdel-Hai, H. Abd El-Wahab
Al-Azhar Bulletin of Science
New modified polyesteramide compositions were prepared and evaluated as vehicles for surface coating The resin was prepared by partial replacement of hydroxyl ethyl fatty acid amide (HETSA) by N,N-Bis(2-hydroxyethyl) -p-toluenesulfonamide .This modification, as expected, imp- roved the film performance and durability and lead to substantial antimicrobial growth control.
Expired Ranitidine Drugs As Corrosion Inhibitor For Corrosion Of Aluminium In Hydrochlric Acid, Reda Abdel Hameed
Expired Ranitidine Drugs As Corrosion Inhibitor For Corrosion Of Aluminium In Hydrochlric Acid, Reda Abdel Hameed
Al-Azhar Bulletin of Science
The corrosion behavior of aluminum in 1M HCl solution in the absence and presence of expired Ranitidine drug was investigated using weight loss and electrochemical techniques. It was found that, the inhibition efficiency of Ranitidine depends on the concentrations. The inhibitive action of this compound discussed in terms of blocking the electrode surface by adsorption of the molecules through the active centers contained in its structure. The adsorption process follows Langmuir adsorption isotherm and El-Awady isotherm. The polarization curves indicate that this compound may act as mixed-type inhibitor. The variation of the open circuit potential of the aluminum electrode as …
An Ecological Study On Wadi Hasanat, Salah District, Taiz Governorate, Republic Of Yemen, Abdo Dahmash, Abdul Al Naser Al- Gifri, Abdullah Al-Manhazy
An Ecological Study On Wadi Hasanat, Salah District, Taiz Governorate, Republic Of Yemen, Abdo Dahmash, Abdul Al Naser Al- Gifri, Abdullah Al-Manhazy
Al-Azhar Bulletin of Science
The Study area in wadi Hasanat, Salah District, Taiz is located between latitude 14° 989' 26'' and 14° 994' 18'' north and longitude 43° 395' 463'' and 43° 395' 702'' east. Regular periodic field visits (three visits/month) were carried out during the years 2007-2008 to study and collect plant samples for the different taxa and to collect soil samples from the different habitats of the wadi. All the collected plant samples were correctly identified and classified. This study aimed to enumerate and identify the plants in the study area which reached 165 species belonging to 49 families. Out of them …
Part 1: Synthesis And Reactions Of Some New Pyrazolo[4,5-D]Imidazole Derivatives And Screening Their Antibacterial And Antitumor Activities, Nahed Abd El-Ghaffar, Mona Kadah, Azza Radwan, Sara Abd El-Al, Asmaa Salman
Part 1: Synthesis And Reactions Of Some New Pyrazolo[4,5-D]Imidazole Derivatives And Screening Their Antibacterial And Antitumor Activities, Nahed Abd El-Ghaffar, Mona Kadah, Azza Radwan, Sara Abd El-Al, Asmaa Salman
Al-Azhar Bulletin of Science
Reaction of 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one with diazotized aromatic amines gave the corresponding diazenyl derivatives 1, which were condensed with carbonyl compounds to give the arylidene derivatives 2. Reaction of the parent pyrazolone with urea, thiourea and guanidine gave the pyrazoloimidazole derivatives 3. compound 3a reacted with thiourea in DMF to give the thiourea derivative 4. The reaction of 4 with malonic acid and acetyl chloride gave the pyrimidinedione derivative 5, which on reaction with thiourea in presence of sodium ethoxide gave the triazine derivative 6. S-alkylation of 6 with ethyl chloroacetate gave the ethyl acetate derivative 7, which on hydrolysis gave the …
Electrophoresis Study On Serum And Some Tissues In Subspecies Of Fat Sand Rat Psammomys Obesus In Egypt, Mohammad Basuony, Zaki Zaki, Boshra El-Salkh, Hanaa Khedr
Electrophoresis Study On Serum And Some Tissues In Subspecies Of Fat Sand Rat Psammomys Obesus In Egypt, Mohammad Basuony, Zaki Zaki, Boshra El-Salkh, Hanaa Khedr
Al-Azhar Bulletin of Science
Aim of the work: In the present study we revised the taxonomy of the mammalian species Fat Sand Rat Psammomys obesus inhabiting the Coastal Desert of Egypt by using protein separation to establishment the pervious taxonomy or not. Material and methods: The study includes electrophoresis on serum, liver, kidney and muscle proteins of three subspecies of desert rodent Fat Sand Rat Psammomys obesus. Results: The serum protein separation of subspecies terraesanctae and subspecies nicoli has the same number of proteins while in subspecies obesus has the small number of proteins. The liver protein separation of the investigated subspecies is different …
The Electropolymerization Of Bithiophene And 3-Methylthiophene Copolymer And Their Electrochemical Relaxation Studies, G. Abou-Elenien, A. El Maghraby, A. Kotb
The Electropolymerization Of Bithiophene And 3-Methylthiophene Copolymer And Their Electrochemical Relaxation Studies, G. Abou-Elenien, A. El Maghraby, A. Kotb
Al-Azhar Bulletin of Science
The electrosynthesis of the copolymer of bithiophene and 3-methylthiophene has been investigated using galvanostatic and potentiodynamic techniques. The most stable films were obtained using galvanostatic technique in acetonitrile solvent and TBAPF6 as supporting electrolyte. A comparison study was performed for the prepared copolymer and homopolymer films whose were subjected to a relaxation studies using cyclic voltammetric technique in different solvents. The effect of solvent, monomer concentration ratio, electrocopolymerization techniques and temperature on the relaxation time were investigated.
Stability Of Antimony And Its Anodic Oxide Film Against Corrosion In Aqueous Solutions, A. El Maghraby, A. Mogoda
Stability Of Antimony And Its Anodic Oxide Film Against Corrosion In Aqueous Solutions, A. El Maghraby, A. Mogoda
Al-Azhar Bulletin of Science
The open circuit potential and impedance measurements were used to investigate the corrosion behavior of antimony in 0.1M citric acid solution made to various pH values. The results showed that the antimony surface undergoes spontaneous corrosion in the citrate solutions. Also the properties of the anodic oxide film on antimony were examined by impedance technique. It was found that the antimony surface becomes more passive as the thickness of the anodic oxide film formed on antimony increase. The anodic oxide film on antimony behaves like a non- ideal capacitor. The stability of the anodic oxide film in the aqueous solutions …
Electrochemical Relaxation Study Of Polythiophene As Conducting Polymer (Ii), G. Abou-Elenien, A. El Maghraby, G. El-Abdallah
Electrochemical Relaxation Study Of Polythiophene As Conducting Polymer (Ii), G. Abou-Elenien, A. El Maghraby, G. El-Abdallah
Al-Azhar Bulletin of Science
The electrosynthesis of polythiophene films from thiophene, 2, 2′:5, 2″-terthiophene,3-methylthiophene and 3-bromothiophene monomers were investigated using different electrochemical techniques. The stability and electrical conductivity of the prepared films were studied. The most stable polythiophene film was obtained using galvanostatic technique in acetonitrile solvent and TBAPF6 as supporting electrolyte at 5°C, except in case of electropolymerization of 3- bromothiophene the most stable film was obtained potentiodynamically. The relaxation kinetics of the films were extensively studied. It was found that a very thin film would hardly show the slow relaxation. Also by using TBAPF6 as electrolyte, the most sensitive film was obtained, …
Synthesis And Antimicrobial Activity Of Some Nitrogen Heterocycles Incorporation Into Coumarin, Nahed Abd El-Ghaffar
Synthesis And Antimicrobial Activity Of Some Nitrogen Heterocycles Incorporation Into Coumarin, Nahed Abd El-Ghaffar
Al-Azhar Bulletin of Science
3-Carbethoxycoumarin derivatives were reacted with some neucleophilic reagents such as amines, hydrazines, urea derivatives and amino acids in order to study their effect on coumarin nucleus especially carbonyl coumarin and synthesis of new derivatives which have biological effects on microorganisms such as bacteria and fungi. The structural assignments of the new compounds were based on analytical and spectral data.
Conductometric Investigation Of Magnesium (Ii), Calcium (Ii) And Barium (Ii) Complexes In Aqueous Solution, Abd Allah Mohamed, Wadie Al–Ariqui, Moustafa Bakr
Conductometric Investigation Of Magnesium (Ii), Calcium (Ii) And Barium (Ii) Complexes In Aqueous Solution, Abd Allah Mohamed, Wadie Al–Ariqui, Moustafa Bakr
Al-Azhar Bulletin of Science
The ionic association constants, KA, of Mg, Ca and Ba metal ions with succinate, malate and tartrate ligands were conductometrically determined in water at 25–40oC. The conductometric data were analysed by the Shedlovsky extrapolation method. The KA values tend to decrease with the cation size in the order Ca > Ba for all the salts under study with the exception of Mg salts, whereas the KA values for the ligands increase in the order succinate < malate < tartrate. For the salts under study, standard thermodynamic functions, Ho and So for the association were evaluated and discussed. The positive values of both Ho and So in all the systems indicate the ionic association processes are the reactions of unfavorable enthalpy and favorable entropy changes in aqueous solution. The thermodynamic metal gradient, , was evaluated and its significance of ion association of all salts under investigation was discussed. On the other hand, the results of limiting molar conductance, o, are discussed on the light of Walden product.
Tantalum As An Indicator Electrode In Different Potentiometric Titrations, Enas Attia
Tantalum As An Indicator Electrode In Different Potentiometric Titrations, Enas Attia
Al-Azhar Bulletin of Science
Tantalum metal was employed as an indicator electrode in different potentiometric titrations. Silver, platinum and SCE were successfully applied as reference electrodes. A number of classical acid/base reactions were chosen. This involve titration of strong and weak mono- and poly basic acids; HCl, H2SO4, H3PO4, HCOOH and H2C2O4 with NaOH and NH4OH. Both forward and backward titrations were carried out. The titration performed until the greatest jump of potential appeared by adding one drop of titrant. Both forward and backward titration curves showed marked potential inflexions which recorded at the theoretically calculated equivalence points. Bimetallic combinations were equally suitable for …
Part 2: Synthesis And Reactions Of Some New Imidazo[4,5-C]Pyrazole And Pyrazolo[3,4-D]Pyrimidine Derivatives, Mona Kadah, Nahed Abd El-Ghaffar, Azza Radwan, Sara Abd El-Al, Asmaa Salman
Part 2: Synthesis And Reactions Of Some New Imidazo[4,5-C]Pyrazole And Pyrazolo[3,4-D]Pyrimidine Derivatives, Mona Kadah, Nahed Abd El-Ghaffar, Azza Radwan, Sara Abd El-Al, Asmaa Salman
Al-Azhar Bulletin of Science
Reactions of 3-methyl-1-phenyl-4,6-dihydroimidazo[4,5-c]pyrazole-5(1H)-thione with carbonyl compounds gave the arylidene derivatives 2 and 3, with recinoleic acid, phosphorus oxychloride/phosphorus pentachloride mixture and copper bronze gave the adduct 4, the chloro derivative 5 and the dimer with desulfurization 7. The behaviour of the chloroderivative towards hydrazine and primary amines have also been studied. On the other, reaction of 5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one with aromatic aldehydes gave the arylidene derivatives 8a-d, which on reaction with thiourea gave the pyrazolopyrimidinethione derivatives 9. The behaviour of compounds 9 towards copper bronze, sodium nitrite/acetic acid mixture, acrylonitrile and formaldehyde/ morpholine and its reaction with compound 1 in presence of …
Synthesis Of Some Benzofuranyl Thieno[2,3-D] Pyrimidine Derivatives With Biological Interest, Nadia Taha, Enas Islam, Nermin Marzok, Abeer Elatrash, Jehane Micky
Synthesis Of Some Benzofuranyl Thieno[2,3-D] Pyrimidine Derivatives With Biological Interest, Nadia Taha, Enas Islam, Nermin Marzok, Abeer Elatrash, Jehane Micky
Al-Azhar Bulletin of Science
Interaction of visnaginone or khellinone (1a,b) with cyanoacetamide, ethyl cyanoacetate or molanonitrile and elemental sulfur in presence of triethylamine afforded thiophene enamino derivatives (2a-d) respectively according to Gewald method. Acetylation of 2a with acetic anhydride gave 3. Condensation of 2b with p-chlorobenzaldehyde yielded 4. Compound 6 was afforded from reaction of enamino carboxamide (2b) with thiourea.. Compound 2b reacted with benzoyl chloride to give thienopyrimidine (8). N-phenyl thienopyrimidine (11) and N-amino thienopyrimidine (13) were prepared from reaction of 2c with phenyl isothiocyanate and hydrazinolysis of 12 with hydrazine hydrate. The structures of these compounds were confirmed by infrared, mass and …
Synthesis Of Some Novel Thiazole, Thiophene, Thienopyridine And Thienopyrimidine Derivatives Containing Tosyl Moiety, S. Hessien, Mona Kadah, N. Marzouk
Synthesis Of Some Novel Thiazole, Thiophene, Thienopyridine And Thienopyrimidine Derivatives Containing Tosyl Moiety, S. Hessien, Mona Kadah, N. Marzouk
Al-Azhar Bulletin of Science
Interaction of 4-aminoacetophenone (1) with p-tolyl sulphonamide afforded 1-[4-tosyl amino) phenyl]ethanone (2). Treatment of 2 with bromine water yielded 2-bromo-1-[4-tosyl amino) phenyl]ethanone (3), which reacted with thiourea to give 2-amino thiazole derivative (4). Compound 2 was condensed with phenyl acetaldehyde and malononitrile to give derivatives (5) and (7), which were respectively reacted with o-aminothiophenol and carbon disulfide to give derivatives (6) and (9). Reaction of 7 under Gewald reaction condition afforded the thiophen-3-carbonitrile derivative (11) which consequently reacted with 4-fluorobenzylidinemalononitrile, phenyl isothiocyanate to give compounds 12 and 15, respectively. The structures of these compounds were confirmed by infrared, mass and …
Vibrational Spectrum And Thermodynamic Properties Of Pyridazine, Zeinab El-Shafie, Ahmed Shabana
Vibrational Spectrum And Thermodynamic Properties Of Pyridazine, Zeinab El-Shafie, Ahmed Shabana
Al-Azhar Bulletin of Science
Vibrational spectrum of pyridazine was recorded. Assignment of frequencies to normal vibrations was made. Tellr-Redlich product rule was applied for symmetry species A1, A2, B1 and B2. Thermodynamic functions were calculated from spectroscopic data.
Novel Imides Amino Acids And Dipeptide Derivatives, Ragab El-Sayed
Novel Imides Amino Acids And Dipeptide Derivatives, Ragab El-Sayed
Al-Azhar Bulletin of Science
Some novel imides derivatives condensed with different amino acids using THF-Et3N method, afforded an excellent yield of compounds 3-8, 20-23b, 32-35b. some of these compounds react with CH3OH-SOCl2 mixture to give corresponding methyl esters 9-11, 24-25, 36-37 Hydrazinolysis of some methyl esters give hydrazides 12-14, 26-27 some dipeptides derivatives 15-17, 28-29, 38-40 were prepared using Dicyclohexylcarbodiimide DCC method, some spectra data were briefly discussed.
Studies On Corrosion Inhibition Of C-Steel In 1m Acetic Acid Solutions By Ethoxylated Poly (Ethylene Terphthalate) Derived From Plastic Waste, Reda Abdel Hameed, H. Al-Shafey, E. Ismail
Studies On Corrosion Inhibition Of C-Steel In 1m Acetic Acid Solutions By Ethoxylated Poly (Ethylene Terphthalate) Derived From Plastic Waste, Reda Abdel Hameed, H. Al-Shafey, E. Ismail
Al-Azhar Bulletin of Science
The inhibition of three ethoxylated poly (ethylene terphthalate), derived from plastic waste by reacting of PET with triethanol amine followed by reacting with polyethylene glycol, (PEG), which has different molecular weights 400, 1000 and 4000. On the corrosion of steel in 1M acetic acid solutions have been studied at different temperatures (30-60°C) by weigh loss. The inhibition efficiency for the three compounds increased with increasing of the inhibitors concentrations and temperatures. The inhibition efficiency for the three inhibitors decrease in the order (Tn= 9< 22< 90). The polarization curves indicate that these compounds act as mixed-type inhibitors. The inhibition occurs through adsorption of the inhibitor molecules on the metal surface without modifying the mechanism of corrosion process. Langmuir adsorption isotherms fit well the experimental data of dissolution and adsorption were calculated and discussed.
Physicochemical Studies On Some Hydrazone Complexes, Hamdy Hammad
Physicochemical Studies On Some Hydrazone Complexes, Hamdy Hammad
Al-Azhar Bulletin of Science
Some hydrazones and their complexes were prepared in order to study their molecular structures. The hydrazones were prepared by condensing p-aminobenzoic acid hydrazide with some aldehydes. The of Cu(II), Ni(II) and Co(II) were prepared and characterized by elemental analysis, magnetic, electronic and IR methods.
New Modified Polyesteramide Compositions As Vehicles For Surface Coatings., Salem Aqeel, H. Abd El-Wahab, Abdulsalam Mahdy, F. Abd El-Hai
New Modified Polyesteramide Compositions As Vehicles For Surface Coatings., Salem Aqeel, H. Abd El-Wahab, Abdulsalam Mahdy, F. Abd El-Hai
Al-Azhar Bulletin of Science
New modified polyesteramide compositions were prepared and evaluated as anticorrosive varnish. The resin prepared by partial replacement of hydroxy ethyl fatty acid amide (HEFA) by polyethylene glycol (PEG) without affecting the resin constants. Primer formulations based on this resin showed good corrosion inhibiting properties.