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Status quo on identified transformation products of organic ultraviolet filters and their persistence / Franziska Jentzsch in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° S1 (10/2023)
[article]
Titre : Status quo on identified transformation products of organic ultraviolet filters and their persistence Type de document : texte imprimé Auteurs : Franziska Jentzsch, Auteur ; Klaus Kümmerer, Auteur ; Oliver Olsson, Auteur Année de publication : 2023 Article en page(s) : p. 101-126 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cosmétiques -- Aspect de l'environnement
cosmétiques -- Produits chimiques
Micropolluants
Photostabilité
Polluants -- Détérioration
Produits antisolaires
Produits chimiques -- BiodégradationIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Organic micropollutants of concern-including organic UV filters (UVF)-are getting increasing attention. Personal care products such as sunscreens or cosmetic articles often contain large quantities of UVF. These substances enter the environment either directly (during outdoor activities) or indirectly (via sewages from households). Therefore, the removal or degradation of UVF by natural or technical treatment processes is important to understand. UVF are often incompletely removed and transformed to side products of incomplete mineralization by abiotic and biotic processes. An extensive overview on transformation products (TPs) is essential to systematically identify knowledge gaps and to derive research needs. While there are many reviews on the UVF themselves, the number of reviews which focus on their TPs is limited. Consequently, this review gives an overview on the latest findings regarding TPs of UVF. In this publication, known TPs of UVF, which were formed during abiotic and biotic processes, are reviewed. Target substances were defined and a literature database was reviewed for studies on TPs of the target substances. The first list of studies was shortened stepwise, thus generating a final list of studies which contained only the relevant studies. Since biodegradation is one of the most important pathways for removal of organic compounds from the environment, this review presents an overview on known TPs of organic UVF and their biodegradability, which determines their environmental fate. In this way, all identified TPs of UVF were listed and checked for information on their biodegradability. A total of 2731 records of studies were assessed. Forty-two studies, which assessed 46 processes that lead to the formation of identified TPs, were included in this review. One hundred and seventyseven different TPs resulting from 11 different UVF were identified. Little to no data on the biodegradability was found for TPs. This indicates a severe lack of data on the biodegradability of TPs of organic UVF substances. Since most TPs lack information on biodegradability, further research should provide information on both-identity and biodegradability-of formed TPs to be able to assess their hazardousness for the environment. Note de contenu : - METHODS : Target substance selection - Generation of the final data set - Documentation and handling of the final data set - Refactoring of the final data set - Addition of quality markers to the final data set - Biodegradability of the TPs listed in the final literature data set
- DEVELOPMENT OF AVAILABLE INTERNATIONAL SCIENTIFIC STUDIES ON UV FILTERS AND THEIR TRANSFORMATION PRODUCTS
- OUTCOME AND INSIGHTS OF THE LITERATURE SEARCH
- INCOMPLETE DEGRADATION OF UV FILTERS BY ABIOTIC AND BIOTIC PROCESSES
- TRANSFORMATION PRODUCTS OF UV FILTER AND UV FILTER MIXTURES
- STABILITY OF TRANSFORMATION PRODUCTS OF UV FILTER : Biodegradability - Photostability - In silico assessment of stability - Interim conclusion on the stability of UVF-TPs according to the reviewed literature - Biodegradability of UVF-TPs according to the ECHA (database) reports
- CHALLENGES REVIEWING TRANSFORMATION PRODUCTS OF UV FILTERS AND THEIR BIODEGRADABILITY
- CONSEQUENCES FOR THE ENVIRONMENTAL PERSPECTIVE AND RECOMMENDATIONS FOR FURTHER RESEARCH
- Table 1 : Overview of 46 abiotic and biotic processes of 11 UVF reported in 42 studies (n = number of studied processes)
- Table 2 : List of all reviewed TPs (TPtotal: 187) of 11 UV filter substances and one mixture, assigned with name, CAS number and relevant transformation process
- Table 3 : Overview on the stability of certain TPs (extracted from literature, limited by data availability)
- Table 4 : Shortened list of the TPs (based on list of TPtotal) for which the literature and/or ECHA database (April 2022) provided information on the stabilityDOI : https://doi.org/10.1111/ics.12908 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/ics.12908 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40255
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° S1 (10/2023) . - p. 101-126[article]Studies of the application of biocolorant for leather dyeing using Monascus Purpureus / A. Tamil Selvi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 4 (04/2018)
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Titre : Studies of the application of biocolorant for leather dyeing using Monascus Purpureus Type de document : texte imprimé Auteurs : A. Tamil Selvi, Auteur ; Gladstone Christopher Jayakumar, Auteur ; N. Usha Rani, Auteur ; Arjunan Yasothai, Auteur Année de publication : 2018 Article en page(s) : p. 105-113 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chimie -- Essais et réactifs
Colorants végétaux
Cuirs et peaux -- Teinture
Essais dynamiques
Extraction (chimie)
Fermentation
Frottements (mécanique)
pH
Photostabilité
Résistance à l'abrasion
Rouge (couleur)
Température
vision des couleursIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : World-wide requirement for colorants from natural origins have been rapidly increasing in the leather sector due to environmental effluent concerns. Biocolorant obtained from Monascus purpureus, which yields red colored extract, has been studied for the dyeing process of leather. The effect of varying conditions like pH, concentration, time and temperature on the levelness of the dyeing, shade brightness, color intensity and exhaustion of the dye have been studied herein, and the conditions optimized. The change in color shade obtained has been quantified by reflectance measurements and compared with the visual assessment data. The bulk properties viz., softness and grain smoothness have been found to be marginally improved, versus control, in biocolorant treated leathers. There is no significant change in strength properties by the use of these natural colorants in the post tanning process. Note de contenu : - EXPERIMENTAL : Reagents and chemical - Microorganism - Substrate and solid-state fermentation - Extraction of biocolorant - experimental trials - Effect of concentration (Trial 1) - Effect of pH (Trial 2) - Effect of temperature (Trial 3) - Effect of time (Trial 4) - Control process - Comparison of experimental and control trials - Analysis of dye exhaustion in the process liquor - Determination of color difference - Visual color assessment - Determination of fastness to light - Determination of fastness to wet and dry rub - Physical testing analysis - Assessment of bulk properties
- RESULTS AND DISCUSSION : Biocolorant production - Natural colorant applied for dye exhaustion : influence of process parameters - Effect of concentration - Effect of pH - Effect of temperature - Effect of time - Effect of surface color at varied condition of biocolorant treatment - Optimized condition of biocolorant treatment Visual assessment of leathers - Light and rub fastness characteristics of leathers - Evaluation of strength characteristics - Assessment of bulk propertiesEn ligne : https://drive.google.com/file/d/1YA5SIZB5vrTUmFlGbGwcF0-7MSrBXeTF/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30339
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 4 (04/2018) . - p. 105-113[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19772 - Périodique Bibliothèque principale Documentaires Disponible Study on photostabilization in situ of reactive hindered amine light stabilizers applied to UV-curable coatings / Yongtao Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 4 (07/2012)
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Titre : Study on photostabilization in situ of reactive hindered amine light stabilizers applied to UV-curable coatings Type de document : texte imprimé Auteurs : Yongtao Zhang, Auteur ; Xiaoxun Liu, Auteur ; Zhixian Dong, Auteur ; Yanyan Cui, Auteur Année de publication : 2012 Article en page(s) : p. 459-466 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amines Une amine est un composé organique dérivé de l'ammoniac dont certains hydrogènes ont été remplacés par un groupement carboné. Si l'un des carbones liés à l'atome d'azote fait partie d'un groupement carbonyle, la molécule appartient à la famille des amides. Découvertes en 1849, par Wurtz les amines furent initialement appelées alcaloïdes artificiels.
On parle d'amine primaire, secondaire ou tertiaire selon que l'on a un, deux ou trois hydrogènes substitués.
Par exemple, la triméthylamine est une amine tertiaire, de formule N(CH3)3.
Typiquement, les amines sont obtenues par alkylation d'amines de rang inférieur. En alkylant l'ammoniac, on obtient des amines primaires, qui peuvent être alkylées en amines secondaires puis amines tertiaires. L'alkylation de ces dernières permet d'obtenir des sels d'ammonium quaternaire.
D'autre méthodes existent : 1. Les amines primaires peuvent être obtenues par réduction d'un groupement azoture, 2. Les amines peuvent aussi être obtenues par la réduction d'un amide, à l'aide d'un hydrure, 3. L'amination réductrice permet l'obtention d'amines substituées à partir de composés carbonylés (aldéhydes ou cétones), 4. Les amines primaires peuvent être obtenues par la réaction de Gabriel.
Chimie -- Essais et réactifs
Photo-oxydation
Photodétérioration
Photostabilité
Réticulation (polymérisation)
Revêtements -- Détérioration
Revêtements -- Séchage sous rayonnement ultraviolet
Stabilisants (chimie)Index. décimale : 667.9 Revêtements et enduits Résumé : Four monomeric reactive hindered piperidinol derivatives, such as 4-methacryloyl-1,2,2,6,6-pentamethyl-piperidinyl (MPMP), 4-acryloyl-1,2,2,6,6-pentamethyl-piperidinyl (APMP), 4-methacryloyl-2,2,6,6-tetramethyl-piperidinyl (MTMP), and 4-acryloyl-2,2,6,6-tetramethyl-piperidinyl (ATMP), were applied as reactive hindered amine light stabilizers (r-HALS) in UV-curable coatings. The effect of r-HALS on the UV-curing kinetics of the UV-curable coatings of different monomers or oligomers has been previously investigated. Polymer coatings were prepared by means of UV-curing technology; experiments were conducted manually on photoaging indoors, monitoring the Yellowness Index (YI) in the photooxidation process, and adding r-HALS. The experiments were done to review its photoprotection effect on UV-cured coatings. Subsequently, they were compared with typical commercial HALS through parallel experiments to investigate the photooxidation aging mechanism of polymer coatings, and the effective concentration was determined from the changing circumstances of YI, thus comparing their differences in photostabilizing effect in situ of the polymer coatings. Note de contenu : - EXPERIMENTAL : Materials - UV-curing kinetics of the monomers/oligomers - Preparation of UV-curable coatings - Photooxidation of the coatings films
- RESULTS AND DISCUSSION : Effect of r-HALS on the UV-curing kinetics of the UV coatings - Photostabilizing efficiency of r-HALS - Comparison of photostabilizing effect between r-HALS and commercial HALSDOI : 10.1007/s11998-011-9385-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9385-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16004
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 4 (07/2012) . - p. 459-466[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14189 - Périodique Bibliothèque principale Documentaires Disponible Sunscreens : maximising skin feel and performance / Jürgen Vollhardt in PERSONAL CARE EUROPE, Vol. 3, N° 1 (03/2010)
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Titre : Sunscreens : maximising skin feel and performance Type de document : texte imprimé Auteurs : Jürgen Vollhardt, Auteur ; Christine Mendrok-Edinger, Auteur Année de publication : 2010 Article en page(s) : p. 71-74 Langues : Anglais (eng) Catégories : Dioxyde de titane
Emulsifiants
Photostabilité
Produits antisolaires
Silicones -- Emploi en cosmétologie
Stabilisants (chimie)Index. décimale : 668.5 Parfums et cosmétiques Note de contenu : - Strategies to improve skin feel
- Synergistic mixtures and the use of silicon-based UV filters
- Optimising the amount of particulate filters such as organic/inorganic pigments
- Application of specific Emulsifier systems and emulsion structures
- Good photo-stability and formulation stabilityPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13493
in PERSONAL CARE EUROPE > Vol. 3, N° 1 (03/2010) . - p. 71-74[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012296 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and application of KM-type reactive dyes containing 2-ethoxy-4-chloro-s-triazine / Qiushui Zhang in COLORATION TECHNOLOGY, Vol. 135, N° 5 (10/2019)
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Titre : Synthesis and application of KM-type reactive dyes containing 2-ethoxy-4-chloro-s-triazine Type de document : texte imprimé Auteurs : Qiushui Zhang, Auteur ; Wei Xiong, Auteur ; Shufen Zhang, Auteur ; Ma Wei, Auteur ; Bingtao Tang, Auteur Année de publication : 2019 Article en page(s) : p. 335-348 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Etalonnage
Fixation (chimie)
Hydrolyse
Photostabilité
Résistance au nettoyage
Solubilité
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A new kind of hetero-bifunctional reactive dye containing 2-ethoxy-4-chloro-s-triazine, with better activity matching with β-hydroxyethyl sulphone sulphate at a low fixation temperature, was successfully synthesised and characterised. An ethoxy group was designed to be introduced into triazine to increase the substantivity and the reactivity of the dyes. Thereby, the fixation of mono-s-chlorotriazine/hydroxyethyl sulphone sulphate (KM-type) bifunctional reactive dyes on cotton was improved, and dyeing under mild conditions with high fixation was realised. Nineteen dyes with orange, red and blue colours were synthesised and characterised by UV-Vis and infrared spectroscopy and mass spectrometry. Synthesised dyes were dyed at 60, 75 and 90°C, respectively. Exhaustion and reactivity for all of the ethoxy-containing KM-type dyes was over 90% at the optimal temperature, and fixation was over 87%, which was higher than the ethoxy-free comparative dyes. The optimal fixation temperature of ethoxy-containing dyes was initially reduced to 75°C, and then to 60°C. Compared with comparative dyes, the wash fastness and light fastness were basically unchanged, and the wet rub fastness of the H-acid series was reduced by one grade. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of dyes - Determination of standard curve and solubility - Study of hydrolysis reaction kinetics - Dyeing and fixing process - Measurements
- RESULTS AND DISCUSSION : Synthesis and spectral properties of the dyes - Structure of dye intermediates - Structures and UV-Vis absorption spectra of KM-type reactive dyes - Determination of the hydrolysis reaction rate constant - Syeing results of KM-type and K-type reactive dyes - J-acid monoazo series reactive dyes - γ-acid monoazo series reactive dyes - H-acid series reactive dyes - Colour fastness properties of KM-type reactive dyesDOI : 10.1111/cote.12424 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12424 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33066
in COLORATION TECHNOLOGY > Vol. 135, N° 5 (10/2019) . - p. 335-348[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21251 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and application of a novel, triphendioxazine-based, phosphorus-containing acid dye for wool / Jinhai Cui in COLORATION TECHNOLOGY, Vol. 134, N° 5 (10/2018)
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