GLDA as a performance booster for liquid laundry detergents / Joana Tsou in SOFW JOURNAL, Vol. 146, N° 1-2 (01-02/2020)  

[article]  inSOFW JOURNAL > Vol. 146, N° 1-2 (01-02/2020) . - p. 36-41 Titre : GLDA as a performance booster for liquid laundry detergents Type de document : texte imprimé Auteurs : Joana Tsou, Auteur ; Wouter-Jan Veenis, Auteur ; Jan Seetz, Auteur ; Claudio Benvegnu, Auteur Année de publication : 2020 Article en page(s) : p. 36-41 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de blanchiment Chélates Détergents Formulation (Génie chimique) Produits nettoyants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Laundry detergents consumers are adopting more sustainable washing habits, such as low temperature wash and use of concentrated liquid detergents. This creates new challenges for the performance of this type of detergents, in particular for stain removal. We will show in this article the importance of water quality in laundry stain removal process and how green chelate GLDA enhances stain removal and boosts performance of concentrated liquid detergents. Note de contenu : - Chelating agents - Laundry - Role of chelating agents in laundry - How GLDA can boost stain removal ofliquid laundry formulas : Effect of water quality in stain removal - Effect of addition of GLDA - Comparison between GLDA and other products (citrate and phosphonates) - Fig. 1 : Chemical formulas of GLDA and MGDA - Fig. 2 : Color difference before and after washing for the different stains using different water qualities for base detergent - Fig. 3 : Color difference before and after washing for the different stains using different water qualities on base detergent (first 3 bars) and different amounts of GLDA on base detergent with hard water containing transition metals (last 3 bars) - Fig. 4 : Photo of the blueberry swatches after washing with base detergent at different water qualities and base detergent containing GLDA - Fig. 5 : Photo of the EMPA-117 swatches before and after washing without detergent, with base detergent and with base detergent with GLDA - Fig. 6 : Color difference before and after washing for the different stains using the base detergent alone and with addition of citrate (4,7 wt% of Na-citrate) or GLDA (4,7 wt% GLDA) all using hard water containing transition metals - Fig. 7 : Color difference before and after washing for the different stains using the base detergent alone and with addition of 2.1 wt% DTPMP (5 wt% of commercial DTPMP product) and 2.4 wt% GLDA (5 wt% Dissolvine® GL-47-S) all using hard water containing transition metals En ligne : https://drive.google.com/file/d/1K9EsUIu5Opuhuq-eoKTqFR_xLNt1WHgk/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33758 [article]

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Impact of the new chelating agents GLDA and MGDA in detergents / Jan Seetz in SOFW JOURNAL, Vol. 144, N° 5 (05/2018)  

[article]  inSOFW JOURNAL > Vol. 144, N° 5 (05/2018) . - p. 10-16 Titre : Impact of the new chelating agents GLDA and MGDA in detergents Type de document : texte imprimé Auteurs : Jan Seetz, Auteur ; Gabi Bongen, Auteur ; Klaus Henning, Auteur Année de publication : 2018 Article en page(s) : p. 10-16 Langues : Anglais (eng) Catégories : Chélates Détergents Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The modern strong chelating agents GLDA (glutamic acid N,N-diacetic acid) and MGDA (methylglycinediacetic acid) are quickly biodegradable and are not labelled as dangerous. They have the ability to bind calcium and magnesium ions, which bind most of the stains to the surface. These chelates are also able to remove hard water carbonate scales, transforming them into water soluble metal chelates and will prevent the inactivation of anionic surfactants by water hardness cations, which will greatly improve the detergency power. Note de contenu : - Hard water scale - Chelating agents of the 1st and 2nd generation - Efficacy spectrum of chelating agents - Dissolving hard water scale (CaCO3) - Inactivation of anionic surfactants by water hardness - Bond strength of chelating agents for metal ions - Water softening - Improved product performance - Car washing cleaners - Kitchen cleaners - Laundry detergents - Dish detergents - Hand dish detergents - FIGURES : 1. Improvement of detergency power by a chelating - 2. Structural chemical forulas of 1st and 2nd generation of chelating agentson - 3. Molar efficiency of CaCO23 by various chelating agents (pH 8, 10 minutes exposure time) - 4. Water hardness raises the Krafft temperature of anionic surfactans to a high level - 5. Conditional stability constants K' of calcium chelates - 6. The necessary amount for water softening is determined by the strength of metal chelate formed - 7. Improved non-mechanically removal of automotive dirt by rinsing with a cleaning solution containing the strongchelating agents MGDA and GLDA compared to weak chelating agents citrate and STPP - 8. Determination of the cleaning efficiency of kitchen cleaners in scrub test on gravy soil (soil 1, tests : Julius Hoesch, Düren) - 10. Determination of cleaning efficiency with narrow ranged nonionic C9-C11 4 E0 (Berol 260), chelating agent GLDA and non-aqueous solvent PnP (Formulations JH #1 and JH #2 Julius Hoesch, Düren ; test : Julius Hoesch, Düren) - 11. Solubility of sodium chelates depending on the sodium hydroxide concentration - TABLES : 1.Grading, composition and product characteristic of tested kitchen cleaners - 2. Performance improvement of kitchen cleners by narrow ranged nonionic C9-C11 4 EO (Berol 260), chelating agent GLDA and non-aqueous solvent PnP (Formulations JH #1 and JH #2 Julius Hoesch, Düren ; test : Julius Hoesch, Düren) En ligne : https://drive.google.com/file/d/1GomklaOhESDkOIv7aeMdbTzNOW7yPo_q/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30680 [article]

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Improved rust removal by addition of environmentally friendly sodium glucoheptonate to the cleaning agent / Jan Seetz in SOFW JOURNAL, Vol. 142, N° 4 (04/2016)  

[article]  inSOFW JOURNAL > Vol. 142, N° 4 (04/2016) . - p. 58-62 Titre : Improved rust removal by addition of environmentally friendly sodium glucoheptonate to the cleaning agent Type de document : texte imprimé Auteurs : Jan Seetz, Auteur ; A. Bouwman, Auteur ; John Rowland, Auteur Année de publication : 2016 Article en page(s) : p. 58-62 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chélates Corrosion Détergents Glucoheptonate de sodium Hydroxydes métalliques Nettoyage Nettoyage industriel Taches Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Water with iron content forms yellowish discolourations on textiles, while brown-coloured deposits of iron(111) hydroxide oc-IN cur on surfaces, such as appear in bottle cleaning and in industrial cleaning (CIP), as well as in toilet bowls in the domestic setting. Rust spots on textiles arise from bloodspots by decomposition of iron-containing haemoglobin. Sodium glucoheptonate is not a chelant agent but a sequestrant, and is also a very effective crystal growth and agglomeration inhibitor for metal hydroxides. From the acid up to the strong alkaline range, easily water-soluble oligomers of multivalent metal hydroxides will be formed. This applies to the removal of rust, because oligomeric iron hydroxide [Fe(0H)3]n is sequestrated by sodium glucoheptonate, which is not deposited. Sodium glucoheptonate also applies to other metal hydroxides (e.g., hydroxi¬des of Al, Cu, Mn and Mg). The precipitates that occur with these metals, as a result of hydroxide formation in alkaline cleaning processes, reduce the effectiveness of cleaning by forming spots or re-depositions of released metal hydroxides and lead to turbidities in liquid detergents with high pH-values during product storage. Note de contenu : - Rust and rust spots - Properties of sodium glucoheptonate - Mode of action of sodium glucoheptonate - Application of dissolvine CSA - Bottle washing - Industrial cleaning - Institutional laundry - Liquid cleaning agents with high pH-value En ligne : https://drive.google.com/file/d/1DAXaTS7Mb3W0Y2cfvmPKo0uNfXBFwW93/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26693 [article]

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