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Understanding BPA-non-intent resin technology in food contact metal packaging coatings / Linqian Feng in COATINGS TECH, Vol. 16, N° 6 (06/2019)
[article]
Titre : Understanding BPA-non-intent resin technology in food contact metal packaging coatings Type de document : texte imprimé Auteurs : Linqian Feng, Auteur ; Andrew Detwiler, Auteur ; Jeffrey Clauson, Auteur ; Abraham Boateng, Auteur ; Hongkun He, Auteur ; Goliath Beniah, Auteur ; Thilanga Liyana Arachchi, Auteur ; H. Williams Chip, Auteur Année de publication : 2019 Article en page(s) : p. 28-37 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aliments -- Emballages
Anticorrosion
Bisphénol A -- Suppression ou remplacement
Couches minces
Emballages métalliques
Essais (technologie)
Essais de résilience
Evaluation
Formulation (Génie chimique)
Résistance chimique
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Consumer and regulatory pressure to replace bisphenol-A (BPA)-based materials in food contact metal packaging coatings has increased in recent years. Regardless of the controversy around BPA, consumers expect canned foods to be free of substances perceived to have negative health impacts while maintaining current shelf life and flavor characteristics. To address the market needs, formulators must innovate to deliver BPA-non-intent (BPA-NI) solutions that can meet or exceed the performance of BPA-based materials. This presents a challenge with regard to improving the resistance to food sterilization and stability during pack testing, and simultaneously balancing mechanical performance that allows the BPA-NI coating to withstand the aggressive canning process.
One response to these technical challenges has been the development of BPA-NI polyester resin technology through innovation on a monomer basis. This monomer innovation provides protective performance attributes such as resistance to corrosion and chemical attack, while enabling flexibility and adhesion through innovative resin and formulation design. Fundamental techniques such as electrochemical impedance spectroscopy (EIS) and cathodic disbonding were employed in combination with industrial fitness-for-use evaluations to demonstrate the improved protective barrier properties of novel non-BPA resins in formulated coatings. In addition, hydrophobicity and interfacial properties were studied to understand the impact of resin structure on coating performance from both experimental and computational perspectives. Applying this suite of methods and analysis builds strong structure-property correlations as part of a resin development strategy for novel non-BPA resins in metal packaging coating applications.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and sample preparation - Testing and evaluations (Electrochemical impedance spectroscopy (EIS) - Cathodic disbonding test - Food simulants and retord) - Computational modeling
- RESULTS AND DISCUSSION : EIS and corrosion mechanisms - Stage zero : Dry film - Stage 1 : Foodsimulant absorption - Stage 2 : Corrosion initiation - Stage 3~4 : Pore/breakthrough formation and delamination - Time-based corrosion resistance - Interface and adhesion
- Fig. 1 : Hydrolysis of model dihexanoate ester (hexanoate-glycol-hexanoate) compounds at 130°C
- Fig. 2 : 2—(a) Cathodic disbonding schematic and (b) lab setup of cathodic disbonding experimental setup
- Fig. 3 : Equivalent circuit model corresponding to a Bode plot with no time-constant (Stage zero corrosion)
- Fig. 4 : Equivalent circuit model corresponding to one time-constant in a Bode plot (Stage I corrosion)
- Fig. 5 : Equivalent circuit model corresponding to two time-constant (Stage II corrosion)
- Fig. 6 : Equivalent circuit model corresponding to a coated metal with Warburg character (Stage III ∼ IV corrosion). Schematics (a) and (b) correspond to equations (5) and (6), respectively
- Fig. 7 : Effect of exposure time on the EIS Bode plot for low-Tg low Mn Control B based clear PU
- Fig. 8 : EIS Bode plot to compare Resin A vs Control A in clear PU formulation, as well as Resin A in gold benzoguanamine phenolic after 5 h of exposure in LAS food simulant
- Fig. 9 : ime-based corrosion resistance of white PU coatings formulated with Control A, Control B, Resin A, and Resin B resins in 2% lactic acid food simulant for (a) 1st 48-h interval and (b) 2nd 48-h interval. Ten hours of relaxation time was given before the 1st and 2nd test intervals. Corrosion resistance is identified by the impedance value at 0.1 Hz
- Fig. 10 : A comparison of corrosion resistance of white PU coatings formulated with Control A, Control B, Resin A, and Resin B resins after 106 h, in 2% lactic acid food simulant
-Fig. 11 : (a) LogP values calculated for glycol (G1)-terephthalic acid (T)-glycol (G2) trimer model compounds, where EG=ethylene glycol, BG=butylene glycol, PG=propylene glycol, NPG=neopentyl glycol, DG=diethylene glycol. (b) Hildebrand solubility parameters calculated from molecular dynamics simulations. The color codes are used to rate the values, where Green=smallest value and Red=greatest value
- Fig. 12 : EIS bode plot to compare Resin A vs Control A in clear PU formulation after 12 days of exposure in LAS food simulant
- Fig. 13 : Images of clear PU coatings formulated with Resin A and Control A (a) after 3% acetic acid retort and (b) after cathodic disbonding test whereby 5V was applied for 60 sec
- Fig. 14 : Quantifying cathodic disbonding failures of Control A-based clear PU coatings through pixels counting
- Table 1 : Details of BPA-NI polyestser resins utilized in this study
- Table 2 : Details of formulation components utilized in this study
- Table 3 : Formulation details of gold benzoguanamine phenolic formulation
- Table 4 : Formulation details of white and clear PU formulationsEn ligne : https://drive.google.com/file/d/1GM1X2P5qhHB9ENgQzeyxlyuJg2J5yzEO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32719
in COATINGS TECH > Vol. 16, N° 6 (06/2019) . - p. 28-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21023 - Périodique Bibliothèque principale Documentaires Disponible Understanding coatings raw materials / Vijay Mannary / Hannover [Germany] : Vincentz Network GmbH & Co. (2015)
Titre : Understanding coatings raw materials Type de document : document électronique Auteurs : Vijay Mannary, Auteur ; Chintankumar J. Patel, Auteur Editeur : Hannover [Germany] : Vincentz Network GmbH & Co. Année de publication : 2015 Collection : European Coatings Library Importance : 287 p. Présentation : ill. ISBN/ISSN/EAN : 978-3-86630-603-5 Prix : 99 E Note générale : Index Langues : Anglais (eng) Catégories : Formulation (Génie chimique)
Revêtements (produits chimiques):Peinture (produits chimiques)
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : The Mission : Everything about raw materials for paints and coatings in a single book. Explained
clearly and simply, without sacrificing scientific expertise and thoroughness. The reader speedily gains a comprehensive overview of the working mechanisms and possible applications of the most common
coatings raw materials. Indispensable for expert formulators and those with aspirations in that direction.
The Audience : For people involved in sectors of the industry related to research and product
development, production, quality assurance and testing, the supply chain, coating system specifications, technical service and marketing. Newcomers to the topic and students with a basic chemistry background who are seeking to familiarise themselves with coatings raw materials, as well as experts wishing to extend their knowledge.
The Value : This book is not just a textbook for beginners, but also an invaluable reference for the experienced professional. It provides both an overview and in-depth basic knowledge of the ever-growing range of coatings raw materials.Note de contenu : - 1. INTRODUCTION TO PAINTS AND COATINGS - 1.1. Why paints and coatings ? - 1.2 Historical perspective - 1.3. Anatomy of paints and coatings
- 2. BINDERS : 2.1. Introduction - 2.2. Natural binders - 2.3. Alkyd resins - 2.4. Saturated polyesters - 2.5. Unsaturated polyester resins - 2.6. Phenolic resins - 2.7. Amino resins - 2.8. Acrylic resins - 2.9. Epoxy resins - 2.10. Polyamides - 2.11. Polyurethanes - 2.12. Silicone resins - 2.13. Cellulosic binders - 2.14. Ethyl cellulose
- 3. PIGMENTS : 3.1. Introduction - 3.2. Important properties of pigments - 3.3. Inorganic pigments - 3.4. Organic pigments
- 4. SOLVENTS : 4.1. Introduction - 4.2. Theory of solvency - 4.3. Important characteristics of solvents - 4.4. Classification of solvents used in the coating industry - 4.5. Toxicity and occupational health - 4.6 Environmental aspects
- 5. ADDITIVES : 5.1. Introduction - 5.2. Wetting and dispersing agents - 5.3. Rheology additives - 5.4. Flow and leveling agents - 5.5. Defoaming and anti-foaming additives - 5.6. Additives for surface modification - 5.7. Adhesion promoters - 5.8. Additives for film formation - 5.9. Anti-skinning agents - 5.10. Light stabilizers - 5.11. BiocidesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27852 Documents numériques
Understanding coatings raw materialsURL Understanding of the residual odour of fatty esters used as emollient in cosmetic products / Marie Jaricot in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 6 (12/2022)
[article]
Titre : Understanding of the residual odour of fatty esters used as emollient in cosmetic products Type de document : document électronique Auteurs : Marie Jaricot, Auteur ; Catherine Malhiac, Auteur ; Christina Chao, Auteur ; Fabien Merlaud, Auteur ; Michel Grisel, Auteur ; Géraldine Savary, Auteur Année de publication : 2022 Article en page(s) : p. 685-702 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse sensorielle
Chimie analytique
Composés organiques volatils
Emollients
Esters gras
Formulation (Génie chimique)
OdeursIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - OBJECTIVE : Fatty esters are known for their versatility, but in addition to their performance as emollients, emulsifiers, solubilizers, or dispersing agents, they have to meet more and more criteria to be used in cosmetic products. Thus, their olfactory characteristics are expected to be as neutral as possible. However, despite a step of deodorization during the synthesis of fatty esters, a residual odour is currently still perceived at the end of the process.
- METHODS : In this study, a specific analytical methodology combining sensory with chemical analyses was implemented to characterize the residual odour of two fatty esters and to determine its origin. Ethyl oleate and isononyl isononanoate were selected and underwent a sensory analysis to evaluate their odour intensity and odour profile. Volatile compounds released by these esters were assessed by GC–MS after solid-phase microextraction and among them, odouractive compounds were brought into light using gas chromatography coupled with mass spectrometry and olfactometry analyses.
- RESULTS : On the isononyl isononanoate chromatogram, only peaks corresponding to the different isomeric ester forms were evidenced while around 70 volatile compounds were detected in the ethyl oleate headspace, including esters, aldehydes, hydrocarbons, and ketones. Isononyl alcohol used as raw material in the synthesis was proven to be responsible for isononyl isononanoate final odour. As for ethyl oleate, of the 23 odour-active compounds perceived, 14 have been identified; they are mainly esters and saturated as well as unsaturated aldehydes.
- CONCLUSION : A novel measurement approach was presented to analyse trace odours of fatty esters and the results will be useful to control their deodorization by targeting appropriate strategies with the aim to either avoid the formation or remove the identified odorant compounds. This study may be further expanded by investigating the impact of deodorization on odour-active compounds for a complete understanding of their contribution to the fatty ester global odour.Note de contenu : - MATERIALS AND METHODS : Samples - Sensory analysis - Analysis of volatile compounds by SPME-GC–MS - Analysis of odorant compounds by GC–MS-O - Quantification of isononyl alcohol and 3,5,5-trimethylhexanoic acid traces in isononyl isononanoate samples by GC-FID
- RESULTS : Ethyl oleate - Isononyl isononanoate
- Table 1 : Relative amounts of volatile compounds detected in the headspace of ethyl oleate with assigned odorant perceptions
- Table 2 : Volatile compounds detected in the headspace of raw materials of ethyl oleate: olein and stearinDOI : https://doi.org/10.1111/ics.12811 En ligne : https://drive.google.com/file/d/1izYOCyoP9kTB5dCdRCYgYBiiw_ErqHRM/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38392
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 6 (12/2022) . - p. 685-702[article]Unique catalyst for low temperature cure epoxy powder coatings / Matthew Gadman in COATINGS TECH, Vol. 20, N° 1 (01-02/2023)
[article]
Titre : Unique catalyst for low temperature cure epoxy powder coatings Type de document : texte imprimé Auteurs : Matthew Gadman, Auteur ; John Florio, Auteur ; Matt C. Salvi, Auteur Année de publication : 2023 Article en page(s) : p. 18-33 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Basses températures
Bisphénol A
Blanc (couleur)
Catalyseurs
Epoxydes
Formulation (Génie chimique)
Homopolymères
Isocyanurate de triglycidyle
Méthacrylate de glycidyle
Polyacryliques
Réticulation (polymérisation)
Revêtements bi-composant
Revêtements organiques
Revêtements poudre
Rhéologie
Stabilité au stockage
ThermodurcissablesIndex. décimale : 667.9 Revêtements et enduits Résumé : Powder coatings continue to ba an attractive technology, primarily due to reduced volatile organic compound (VOC) emissions, ability to recycle overspray, and the exceptional film mechanical properties that can be attained. Despite the appeal, there are major drawbacks that need to be resolved for the technology to be effectively substitutable for liquid coatings. Note de contenu : - POWDER HISTORY AND TODAY'S MARKET : Launch of thermoset powder technology-innovation and low VOC initiatives : Circa 1950-1990 - Continued growth in a variety of markets-postmillennial - Environmentally aware consumers and VOC regulations : contemporary market
- A REVIEW OF THERMOSET POWDER TECHNOLOGIES : 1. Epoxy hybrids - 2. TGIC coatings (polyester) - 3. Acrylic systems - 4. Pure epoxy formulations
- CATALYSTS FOR EPOXY POWDER COATINGS :
- EXPERIMENTAL : Experiment I : Cure capabilities in acrylic/GMA-SB and pwoder formulations - Formulations, materials, and preparation of 2K SB acrylic/GMA and pwder acrylic/GMA - Rheology studies of 2K SB acrylic/GMA and pwder acrylic/GMA
- EXPERIMENT II : Accelerating epoxy homopolymerization : Formulations, materials, and preparation of catalyzed epoxy resins - Rheology studies of catalyzed BPA epoxy resins
- EXPERIMENT III : EVALUATION OF CATALYST PC IN FULLY FORMULATED WHITE EPOXY HYBRID POWDER : Formulations, materials, and preparation of white epoxy hybrid - Rheology studies of white epoxy hybrid - Film preparation of white epoxy hybrid - Film evaluation of white epoxy hybrid - Storage stability
- EXPERIMENT IV : EVALUATION OF CATALYST PC IN FULLY FORMULATED WHITE TGIC POWDER : Formulations, materials, and preparation of white TGIC formulation - Rheology studies of white TGIC formulation - Film preparation of white TGIC formulation - Film evaluation of white TGIC formulation - Storage stability
- Fig. 1 : Bisphenol-1 type epoxy resins, n ≥ 0
- Fig. 2 : Hydroxy ester formation via reaction of epoxides and carboxyl groups
- Fig. 3 : Triglycidylisocyanurate (TGIC) crosslinker
- Fig. 4 : Glycidyl methacrylate (GMA) monomer
- Fig. 5 : Dicyandiamide (DICY) crosslinker
- Fig. 6A : Initiating epoxy/amine polymerization
- Fig. 6B : Epoxy homopolymerization via catalysis by tertiary amine
- Fig. 6C : Deprotonation of hydroxyls and subsequent reactions with epoxy
- Fig. 6D : Amide formation via reaction of hydroxyl with nitrile
- Fig. 7A : Base catalysis : deprotonation of carboxylic acid*
- Fig. 7B : Base catalysis : interaction of conjugate acid with epoxide oygen
- Fig. 8 : Preparing powder disks using cylindrical pellet press
- Fig. 9 : Catalyst LC gel temperature in S B and powder acrylic/GMA system
- Fig. 10 : Log (lη*l) as a function of temperature : increasing dosages of catalyst LC
- Fig. 11 : Gel temperatures of white epoxy hybrid
- Fig. 12 : MEK resistance of white epoxy hybrids baked at various temperatures
- Fig. 13 : Impact resistance of white epoxy hybrid baked at various temperatures for 15 mn
- Fig. 14 : ΔΕ of catalyzed versus uncatalyzed white epoxy hybrid
- Fig. 15 : Pendulum and pencil hardness of white epoxy hybrid-bake temp./ 15 mn
- Fig. 16 : Log (lη*l) as a function of temperature-white TGIC formulation
- Fig. 17 : Impact resistance of white TGIC formluation - % active catalyst on TRS
- Fig. 18 : Gloss and color of white TGIC formulation-60° GU and b*
- Table 1 : Commonly used catalysts for epoxy reaction with carboxylic acids
- Table 2 : Physical properties of catalyst LC and catalyst PC
- Table 3 : 2K SB acrylic/GMA formulation
- Table 4 : Powder acrylic/GMA formulation
- Table 5A : Pre-experiment steps for SB oscillation tests
- Table 5B : Protocol for SB oscillation tests
- Table 6A : Pre-experiment steps for powder oscillation tests
- Table 6B : Protocol for powder oscillation tests
- Table 7 : Solventless BPA epoxy resin
- Table 8A : Pre-experiment steps for solventless epoxy oscillation tests
- Table 8B : Protocol for solventless oscillation tets
- Table 9 : Gel temp and onset temp of BPA epoxy resin with catalyst LC
- Table 10A : Breakdown of components of uncatalyzed white epoxy hybrid
- Table 10B : % breakdown of uncatalyzed and catalyzed white epoxy hybrid
- Table 11A : Pre-experiment steps for white epoxy hybrid oscillation tests
- Table 11B : Protocol for white epoxy hybrid oscillation tests
- Table 12 : Color values of white epoxy hybrid : L*, a*, b*
- Table 13 : Gloss properties of white epoxy hybrid-60° gloss units (GU)
- Table 14 : Uncatalyzed white TGIC formulationEn ligne : https://drive.google.com/file/d/1geR64CGC-_890pO1tV9GH-iQvIM2r4Eg/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38714
in COATINGS TECH > Vol. 20, N° 1 (01-02/2023) . - p. 18-33[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23812 - Périodique Bibliothèque principale Documentaires Disponible A unique pigment for decorative and protective coating in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4628 (02/2017)
[article]
Titre : A unique pigment for decorative and protective coating Type de document : texte imprimé Année de publication : 2017 Article en page(s) : p. 49 Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Formulation (Génie chimique)
Matériaux -- Propriétés barrières
Oxyde de fer micacé
Pigments inorganiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : The author explains at how micaceous iron oxide can provide a special decorative and protective coating, as well as show anti-corrosive characteristics Note de contenu : - Decorative coating
- Protective coating
- FIGURES : 1. Example of colour card developed for micaceous iron paint - 2. Chart of the barrier effect offered by MIO-based coatings
- TABLE : Starting point formulationEn ligne : https://drive.google.com/file/d/16p4l5mN1ZmfnEq7e6BPFphq190WpfE7l/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27914
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Code-barres Cote Support Localisation Section Disponibilité 18702 - Périodique Bibliothèque principale Documentaires Disponible A unique preservative-free solution / Sinerga Research Centre (Italie) in PERSONAL CARE EUROPE, Vol. 12, N° 1 (02/2018)
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PermalinkUnique waterborne alternatives to traditional solvent-based coatings for industrial wood applications / Laurie Morris in COATINGS TECH, Vol. 15, N° 6 (06/2018)
PermalinkUniversal tinters / M. A. Shenoy in PAINTINDIA, Vol. LI, N° 2 (suppl.) (02/2001)
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PermalinkUnlocking sustainable innovation : How conditioning biopolymer AURIST AGC transforms hair care and body wash applications / Kashimura Takenori in SOFW JOURNAL, Vol. 149, N° 12 (12/2023)
PermalinkUrethane methacrylate reactive diluents for UV-curable polyester powder coatings / Theodore J. Hammer in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
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PermalinkUse of carbodiimides for interior clear wood floor finishes / Pat Bell in COATINGS TECH, Vol. 7, N° 9 (09/2010)
PermalinkUse of a fatty acid oxazoline derivative as a reactive diluent / Y. Berry-Walker in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B4 (12/2005)
PermalinkUse of sisal industrial waste (Agave sisalana Perrine) in sustainable and multifunctional cosmetic products in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 6 (12/2023)
PermalinkUses for chrome leather waste - Chromium-enriched brewers yeast in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 1 (01-02/2006)
PermalinkUsing DC electrochemical techniques to assess the relative corrosiveness of water-based coatings and their ingredients / F. Louis Floyd in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 2 (06/2007)
PermalinkUsing "high performance two-component waterborne polyurethane" wood coatings / Michael J. Dvorchak in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 866 (03/1997)
PermalinkUsing melamine crosslinkers in developing high-performance coatings / Dennis E. Erickson in PAINTINDIA, Vol. LI, N° 2 (suppl.) (02/2001)
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