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Journal Articles

A simple approach for the synthesis of coumarin fluorescent dyes under microwave irradiation and their application in textile printing

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G.H. Elgemeie, K.A. Ahmed, E.A. Ahmed, M.H. Helal, D.M. Masoud
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2016) 45 (4): 217–224.
https://doi.org/10.1108/PRT-02-2015-0019
Published: 04 July 2016
View article titled, A simple approach for the synthesis of coumarin fluorescent dyes under microwave irradiation and their application in textile printing
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Journal Articles

Synthesis of novel tetrasubstituted thiophenes based dye using sodium a-cyanoketene dithiolates as starting materials

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G.H. Elgemeie, K.A. Ahmed, E.A. Ahmed, M.H. Helal, D.M. Masoud
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2015) 44 (6): 339–346.
https://doi.org/10.1108/PRT-12-2014-0117
Published: 02 November 2015
View article titled, Synthesis of novel tetrasubstituted thiophenes based dye using sodium a-cyanoketene dithiolates as starting materials
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Journal Articles

Microwave assisted one-pot synthesis of pyrazoloquinazolinone derivatives and their application on printing of synthetic fabrics

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G.H. Elgemeie, K.A. Ahmed, E.A. Ahmed, M.H. Helal, D.M. Masoud
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2015) 44 (3): 165–171.
https://doi.org/10.1108/PRT-04-2014-0030
Published: 05 May 2015
View article titled, Microwave assisted one-pot synthesis of pyrazoloquinazolinone derivatives and their application on printing of synthetic fabrics
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Journal Articles

Microwave synthesis, photophysical properties of novel fluorescent iminocoumarins and their application in textile printing

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G.H. Elgemeie, K.A. Ahmed, E.A. ahmed, M.H. helal, D.M. Masoud
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2015) 44 (2): 87–93.
https://doi.org/10.1108/PRT-04-2014-0029
Published: 02 March 2015
View article titled, Microwave synthesis, photophysical properties of novel fluorescent iminocoumarins and their application in textile printing
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Journal Articles

Synthesis and application of novel disazo pyrazolo[1,2‐a]pyrazole reactive dyes

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H.Z. Shams, Y.A. Youssef, F.A. Mohamed, M.M. El‐Zawahry, M.H. Helal, E.A. El‐Kharadly
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2009) 38 (6): 372–379.
https://doi.org/10.1108/03699420911000628
Published: 06 November 2009
View article titled, Synthesis and application of novel disazo pyrazolo[1,2‐a]pyrazole reactive dyes
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Journal Articles

Synthesis of a new series of polyfunctionally substituted thiazole azo dye systems for dyeing of synthetic fibres

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M.H. Helal, G.H. Elgemeie, D.M. Masoud
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2008) 37 (6): 402–409.
https://doi.org/10.1108/03699420810915102
Published: 07 November 2008
View article titled, Synthesis of a new series of polyfunctionally substituted thiazole azo dye systems for dyeing of synthetic fibres
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Journal Articles

Synthesis of new disperse azo dyes based on oxopyridine core

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H.Z. Shams, M.H. Helal, I.M. Samir, R.M. Mohareb
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2008) 37 (5): 299–307.
https://doi.org/10.1108/03699420810901972
Published: 12 September 2008
View article titled, Synthesis of new disperse azo dyes based on oxopyridine core
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Journal Articles

Synthesis of new 5‐arylazo‐3‐cyano‐4,6‐dimethyl‐2‐acetylchloridethiopyridine reactive disperse dyes and their applications in textile printing

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M.H. Helal, G.H. Elgemeie, M.A. El‐kashouti, M.M. ElMolla, H.S. Elsayad, K.A. Ahmed
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2008) 37 (4): 234–242.
https://doi.org/10.1108/03699420810887870
Published: 04 July 2008
View article titled, Synthesis of new 5‐arylazo‐3‐cyano‐4,6‐dimethyl‐2‐acetylchloridethiopyridine reactive disperse dyes and their applications in textile printing
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Journal Articles

Synthesis of several new pyridine‐2(1H) thiones containing an arylazo function and their applications in textile printing

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M.A. El‐Kashouti, M.M. El Molla, H.S. Elsayad, K.A. Ahmed, M.H. Helal, G.H. Elgemeie
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2008) 37 (2): 80–86.
https://doi.org/10.1108/03699420810860428
Published: 21 March 2008
View article titled, Synthesis of several new pyridine‐2(1H) thiones containing an arylazo function and their applications in textile printing
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Journal Articles

Novel benzothiazapine azo dyes: synthesis, characterisation and printing properties

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M.H. Helal, G.H. Elgemeie, M.A. El‐kashouti, K.A. El‐zaher Ahmed
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2008) 37 (1): 28–36.
https://doi.org/10.1108/03699420810839684
Published: 11 January 2008
View article titled, Novel benzothiazapine azo dyes: synthesis, characterisation and printing properties
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Journal Articles

Preparation and characterisation of novel methylsulfanylpyrazolopyrimidines as heterocyclic dyes from ketene dithioacetals

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M.H. Helal, G.H. Elgemeie, D.M. Masoud
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2007) 36 (5): 306–311.
https://doi.org/10.1108/03699420710820423
Published: 18 September 2007
View article titled, Preparation and characterisation of novel methylsulfanylpyrazolopyrimidines as heterocyclic dyes from ketene dithioacetals
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Journal Articles

Synthesis and characterisation of a new series of pyridinone azo dyes for dyeing of synthetic fibers

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M.H. Helal
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2004) 33 (3): 165–171.
https://doi.org/10.1108/03699420410537287
Published: 01 June 2004
View article titled, Synthesis and characterisation of a new series of pyridinone azo dyes for dyeing of synthetic fibers
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Journal Articles

Novel arylazopyrazolo[1,5‐a]pyrimidine derivatives: synthesis, properties and dyeing characteristics

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G.H. Elgemeie, M.H. Helal, H.M. El‐Sayed
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2004) 33 (2): 91–98.
https://doi.org/10.1108/03699420410524902
Published: 01 April 2004
View article titled, Novel arylazopyrazolo[1,5‐a]pyrimidine derivatives: synthesis, properties and dyeing characteristics
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Journal Articles

Synthesis of and dyeing characteristics of novel pyrazolo[1,5‐a]pyrimidine derivatives containing two arylazo functions

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G.H. Elgemeie, M.H. Helal, H.M. El‐Sayed
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2003) 32 (2): 100–106.
https://doi.org/10.1108/03699420310464801
Published: 01 April 2003
View article titled, Synthesis of and dyeing characteristics of novel pyrazolo[1,5‐a]pyrimidine derivatives containing two arylazo functions
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Journal Articles

Synthesis of a new series of thiazole and pyrazole azo dye systems for dyeing synthetic fibers

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M.H. Helal
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2001) 30 (5): 296–300.
https://doi.org/10.1108/EUM0000000005992
Published: 01 October 2001
View article titled, Synthesis of a new series of thiazole and pyrazole azo dye systems for dyeing synthetic fibers
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Journal Articles

A novel synthesis of 1‐oxo‐thieno[3’,2’‐3,4] pyrazolo[1,2‐a] pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers

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H.Z. Shams, M.H. Helal, F.A. Mohamed, S.A. Abd‐Elhafiz
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2001) 30 (3): 158–167.
https://doi.org/10.1108/03699420110390805
Published: 01 June 2001
View article titled, A novel synthesis of 1‐oxo‐thieno[3’,2’‐3,4] pyrazolo[1,2‐a] pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers
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Journal Articles

Synthesis of a new series of polyfunctionally substituted pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers

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H.Z. Shams, M.H. Helal, F.A. Mohamed
Journal: Pigment & Resin Technology
Pigment & Resin Technology (2001) 30 (2): 99–108.
https://doi.org/10.1108/03699420110381625
Published: 01 April 2001
View article titled, Synthesis of a new series of polyfunctionally substituted pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers
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