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Striking performance and stability at high pH / Sjören Schweizerhof in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2021)
[article]
Titre : Striking performance and stability at high pH : Modern additives for biocide-free paints facilitate robust formulations that offer lasting stability, superior application properties and workability Type de document : texte imprimé Auteurs : Sjören Schweizerhof, Auteur ; Yanwei Brecht-Wu, Auteur ; Nils Kottner, Auteur Année de publication : 2021 Article en page(s) : p. 20-26 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Antimousse
Epaississants
Formulation (Génie chimique)
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Stabilité hydrolytiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Additives are essential for durable, easy-to-apply coatings Water-borne architectural and DIY coatings usually require additives such as defoamers, rheology modifiers, dispersing agents and preservatives. These mut be compliant, safe, eco-friendly and efficient at low dosage. Here, we present a new all-round dispersant and core-shell thickener for formulating advanced, durable, biocide-free paints. Note de contenu : - The return of silicate paints
- Accelerated aging in alkaline conditions
- Pivotal role of pigment dispersants & paint stabilisers
- Reduced paint complexity
- Superior colour development and rub-out
- Rheology modifiers : essential for in-can stability
- Better hydrolytic stability and workability
- The right defoamer - Robust and long-lasting
- Table 1 : Simplified silicate-based test formulation for chiecking additive stability under accelerated conditions (pH approx. 11.5)
- Table 2 : Actual real silicate paint formulation used (<5 % organic content). The investigated additives are marked in grey
- Table 3 : Defoamer investigation in the quick test formulation after storage for seven days at 60°C. All defoamers were tested at two pH levels. The efficiency/persistency was evaluated by applying an air sparge test and roller applicationon PVC chartsEn ligne : https://drive.google.com/file/d/10GVcOcoIrKMyhPNuXJjDod_DZUtK7JBe/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35906
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2021) . - p. 20-26[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22779 - Périodique Bibliothèque principale Documentaires Disponible Sun protection : formulation as easy as winking / Lars Jung in GLOBAL PERSONAL CARE, Vol. 22, N° 5 (05/2021)
[article]
Titre : Sun protection : formulation as easy as winking Type de document : texte imprimé Auteurs : Lars Jung, Auteur ; Ev Suess, Auteur Année de publication : 2021 Article en page(s) : p. 29-31 Langues : Anglais (eng) Catégories : Epaississants
Formulation (Génie chimique)
Peau -- Soins et hygiène
Produits antisolairesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : The formulation of sun protection products can become a difficult job for the formulator. Selecting the right UV filter combination to achieve broad spectrum protection, adjusting the use levels of each UV filter to reach the desired SPF (sun protection factor) while complying with all regulatory demands and providing sufficient stability to the formulation are only a few of the challenges.
And these are just the requirements for providing a sun care product, doing what it should do - protect the skin from UV radiation. The skin-feel and the textures for different application types have not yet been taken into consideration.
A sun care product with an SPF 30, matching all requirements and providing a comfortable skin-feel can easily contain 20 to 25 different ingredients.
Neo Heliopan® Flat1 (INCI : Homosalate, Octocrylene, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Butyl Methoxydibenzoylmethane, Ethylhexyl Salicylate) offers a combination of UVA and UVB filters providing a broad spectrum protection from ultraviolet radiation. The blend uniformly absorbs solar radiation ranging from 300 to 360nm and therefore provides optimal protection against harmful UVA and UVB rays. The simple adjustment of the use level enables the manufacture of sunscreen products, such as lotions, creams, sprays and oils with sun protection factors from 6 to 50+ without the need to add additional UV filters.
The liquid blend is composed in a way that crystalline UV filters stay solubilised down to -20°C, which makes it also suitable for cold/ cold processes which save time and energy in the manufacturing process and avoids the handling of powdered UV filters.
In combination with SymEffectTM Varytex2 (INCI: Propanediol Dicaprylate/Caprate, Triisononanoin, Diisopropyl Adipate, Caprylic/ Capric Triglyceride, Stearyl Heptanoate, Glyceryl Oleate Citrate, Cetearyl Nonanoate, Stearyl Caprylate), a well-balanced selection of oil components and an effective O/W emulsifier, the creation of sun care products with different textures, from sprays to creams becomes even easierNote de contenu : - Formulating a strategy
- Sensorial
- Fig. 1 : UV Absorbance Curve NeoHeliopan® Flat in 10 ml/l Isopropanol
- Fig. 2 : Absorbance Curve NeoHeliopan® flat
- Fig. 3 : Classic thickener combination : Carbomer, xanthan gum natural thickener combination : Scleroglucan, Xanthan gum, microcrystalline cellulose
- Table 1 : Different use levels of NeoHeliopan® flat in a O/W sunscreen formula - Expected SPF VS. in vitro SPF including the data about UVA PF after irradiation and critical wavelength
- Formulation 1 : Easy as winking ! Body sun protection lotion, SPF 50+, UVA/UVB balancedEn ligne : https://drive.google.com/file/d/17WJhUbbrrxjSsREbJbtjcnjAgsG7z8MN/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35810
in GLOBAL PERSONAL CARE > Vol. 22, N° 5 (05/2021) . - p. 29-31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22673 - Périodique Bibliothèque principale Documentaires Disponible Surfactants as rheology modifiers - Cationic thickeners / Sorel Muresan in SOFW JOURNAL, Vol. 143, N° 10 (10/2017)
[article]
Titre : Surfactants as rheology modifiers - Cationic thickeners Type de document : texte imprimé Auteurs : Sorel Muresan, Auteur ; Josmary Velasquez, Auteur ; Olof Forsberg, Auteur ; Adrian Zuberbuehler, Auteur Année de publication : 2017 Article en page(s) : p. 10-16 Langues : Anglais (eng) 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.
Ammoniums quaternaires
Epaississants
Formulation (Génie chimique)
Rhéologie
Sels d'ammonium
SurfactantsIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Amine derived thickening agents can be used to impart viscosity is a result of complex and dynamic micelles formation that can be extented to rods and entangled worm-like structures. Cationic surfactants are versatile functioning ingredients that have been used in many challenging formulations where extreme pH or oxidative mediums are desired. In addition to thickening, surfactants bring other benefits such as degreasing efficiency, foam control, oil and perfume solubilization, particle dispersion, and corrosion inhibition. Note de contenu : - MICELLAR GROWTH FOR CATIONIC SURFACTANTS
- CLASSES OF THICKENING AGENTS : Ethoxylated amines - Quaternary ammonium salts - Amine oxides
- THICKENING FORMULATIONS : ProcedureEn ligne : https://drive.google.com/file/d/1T4h-YL0VFK0n_vATc7oiCY0Sz4PeQjLw/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29272
in SOFW JOURNAL > Vol. 143, N° 10 (10/2017) . - p. 10-16[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19291 - Périodique Bibliothèque principale Documentaires Disponible Sustainable and versatile additive for rheology modification of liquid and structuring of solid detergents / Saugata Nad in SOFW JOURNAL, Vol. 148, N° 6 (06/2022)
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Titre : Sustainable and versatile additive for rheology modification of liquid and structuring of solid detergents Type de document : texte imprimé Auteurs : Saugata Nad, Auteur ; Serge Creutz, Auteur ; Christel Simon, Auteur ; Rahma Benbakoura, Auteur ; Flore Vandemeulebroucke, Auteur ; Deepak Dandekar, Auteur ; Pawel Chojnacki, Auteur Année de publication : 2022 Article en page(s) : 32-36 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Détergents -- Additifs
Détergents solides
Epaississants
Formulation (Génie chimique)
RhéologieIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Today's trend towards more sustainable detergents translates into a need for biodegradable and biosourced materials that perform well in the target applications.
One of the approaches to enable more sustainable products relies on high yield additives, such as rheology modifiers or structurants.
Those additives helps to do more with less; lower levels of active ingredients, same performance at reduced cost, concentrated formulations.
Dow Home care technical team have designed a new bio-based, biodegradable technology, SupraCareâ„¢ 780 Additive which would be a perfect fit.
The present study will demonstrate how to use this new material to obtain optimum rheology in liquid formulations and high water structuring and retention across solids formats with reduced levels versus current materials.Note de contenu : - Subject and study design
- Formulation design of hand dish wash liquid
- Formulation design for soap bars
- Formulation design for laundry washing pearls (E-commerce friendly format)
En ligne : https://drive.google.com/file/d/15Z8rFqv8Wl6nXD4hSTMuWyV8qYNYAEiC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37817
in SOFW JOURNAL > Vol. 148, N° 6 (06/2022) . - 32-36[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23477 - Périodique Bibliothèque principale Documentaires Disponible Syneresis and rheology mechanisms of a latex-HEUR associative thickener system / Franceska A. Santos in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)
[article]
Titre : Syneresis and rheology mechanisms of a latex-HEUR associative thickener system Type de document : texte imprimé Auteurs : Franceska A. Santos, Auteur ; Tyler J. Bell, Auteur ; Alexandra R. Stevenson, Auteur ; Dana J. Christensen, Auteur ; Michaela R. Pfau, Auteur ; Brendan Q. Nghiem, Auteur ; Christopher R. Kasprzak, Auteur ; Travis B. Smith, Auteur ; Raymond H. Fernando, Auteur Année de publication : 2017 Article en page(s) : p. 57-67 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adsorption
Epaississants
Floculation
Latex
Polyuréthane éthoxylé modifié de façon hydrophobe
Rhéologie
SynérèseEn chimie, la synérèse définit la séparation d'un liquide de son gel.Index. décimale : 667.9 Revêtements et enduits Résumé : This study focuses on the phase behavior, rheology, and interactions of polymer latex particles and a hydrophobically modified ethoxylated urethane (HEUR) associative thickener in water. At constant 0.25 latex particle volume fraction, increasing HEUR caused stable, followed by phase separated (syneresis), and stable mixtures as HEUR concentration increased from 0% to 2.0% (by weight) in the latex-thickener aqueous mixture. The mixtures that underwent syneresis were flocculated. The relationship between the flocculation behavior and the composition of the latex-HEUR mixtures is consistent with previous work reported by other investigators. However, detailed rheological data on systems like these that have undergone syneresis have not been reported. This paper presents detailed viscosity vs shear rate data and correlates viscosity trends with the both flocculation and syneresis behavior. The stable latex-HEUR mixtures at low HEUR levels show Newtonian or shear-thinning viscosity with well-defined low-shear Newtonian plateaus. As HEUR level is increased to levels at which syneresis is observed, erratic rheological profiles with shear thinning as well as thickening are observed. This type of shear thickening has been attributed to bridging flocculation by other investigators. When HEUR level is further increased to levels at which no syneresis is observed, low-shear Newtonian plateaus re-appeared, albeit at higher viscosities. Detailed analysis of syneresis and shear-thickening behavior of a latex-HEUR mixture containing 0.5% (by weight) HEUR showed two shear-thickening regions, one between 0.1 and 0.5 s−1 shear rate range and another between 30 and 100 s−1 shear rate range. Molecular weight distribution (MWD) of the HEUR thickener indicates that the two shear-thickening regions are related to the bi-modal nature of the thickener’s MWD. Note de contenu : - Thickening of aqueous phase
- Adsorption
- Bridging flocculation of dispersed particles
- Depletion flocculation of dipersed particles
- Effect of shear rate on thickening mechanismsDOI : 10.1007/s11998-016-9829-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9829-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27789
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 1 (01/2017) . - p. 57-67[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18674 - Périodique Bibliothèque principale Documentaires Disponible Synthèse de colloïdes modèles par polymérisation en émulsion de styrène et d'acrylate de N-butyle. Leur utilisation dans des études de rhéologie et de formation de film / Jean-Luc Guillaume / 1985
PermalinkSynthèse en émulsion et microémulsion inverse de polymères associatifs hydrosolubles : propriétés rhéologiques en solution / Martial Pabon / 1997
PermalinkSynthesis and characterization of waterborne polyurethane thickeners based on hyperbranched polyester / Andong Xie in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)
PermalinkTailoring performance of waterbased, quality decorative paints / Hans VonHögen in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4582 (03/2013)
PermalinkTechnical review on hydrophobically modified alkali swellable (HASE) emulsion / Prashant Waykole in PAINTINDIA, Vol. LXXIII, N° 1 (01/2023)
PermalinkTemperature-stable viscosity behaviour / Sylvia Bühne in EUROPEAN COATINGS JOURNAL (ECJ), N° 12/2010 (12/2010)
PermalinkTexture et cosmétiques / Kristina Kannheiser in EXPRESSION COSMETIQUE, N° Hors série (12/2017)
PermalinkPermalinkThe effects of color concentrates on the rheology of tint bases / Douglas J. Herrick in COATINGS TECH, Vol. 10, N° 9 (09/2013)
PermalinkPermalinkThe influence of natural gelling agents on the foaming behaviour and foam structure in surfactant systems / Gina marin Velasquez in SOFW JOURNAL, Vol. 146, N° 1-2 (01-02/2020)
PermalinkThe path to natural cosmetics sustainable, resource-saving and well-tolerated / Dmitrij Bogdanov in SOFW JOURNAL, Vol. 150, N° 1/2 (01-02/2024)
PermalinkThermorheology of polyethylene wax modified sulfur asphalt / M. A. Parvez in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 2 (05/2015)
PermalinkThickener aids amino acid surfactant systems / Gary Yao in PERSONAL CARE EUROPE, Vol. 4, N° 1 (03/2011)
PermalinkThickening and free-flowing agents / Kevin Neale in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4567 (12/2011)
PermalinkThickening by thinning - A novel liquid rheology additive for selvent-based and solvent-free coatings / Janos Hajas in PAINTINDIA, Vol. XLVII, N° 10 (10/1997)
PermalinkThickening of surfactant formulations using worm-like micelles / Jochen Kleinen in SOFW JOURNAL, Vol. 147, N° 3 (03/2021)
PermalinkThickening paints for any weather / John J. Rabasco in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2019)
PermalinkPermalinkTolerance for alcohol and temperature / Udo Schonhoff in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2021)
PermalinkToughness of polyester flocks in shear thickening gel / Yuhao Tan in CHEMICAL FIBERS INTERNATIONAL, Vol. 70, N° 4 (12/2020)
PermalinkUndertanding thickening stabilising polymers / Alicia Roso in PERSONAL CARE EUROPE, Vol. 3, N° 3 (09/2010)
PermalinkUnifying model for understanding HEUR associative thickener influences on waterborne coatings : I. HEUR interactions with a small particle latex / Mao Chen in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 867 (04/1997)
PermalinkUnique textures via natural-derived modifiers / Joel Basilan in GLOBAL PERSONAL CARE, Vol. 23, N° 1 (01/2022)
PermalinkUse of cellulose esters as rheology additives for automotive OEM clearcoats / Jianhui Zhou in COATINGS TECH, Vol. 9, N° 6 (06/2012)
PermalinkVersatile chemistry for improved heurs / Pol Storme in EUROPEAN COATINGS JOURNAL (ECJ), N° 10 (10/2015)
PermalinkWater soluble or not ? A simple question difficult to answer / Joachim Venzmer in SOFW JOURNAL, Vol. 149, N° 10 (10/2023)
PermalinkWaterborne latex coatings of color. III. Triblock polyether influences on color development and viscosity / David M. Mahli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 1 (03/2007)
PermalinkWaterborne rheology modifiers : Improving thickening efficiency / M. Veeramani in PAINTINDIA, Vol. LXXII, N° 9 (09/2022)
PermalinkWhat does fumed silica do for adhesives and sealants compared to other thickeners ? / Dave Dun in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 12 (12/2018)
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