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How can we handle microbial growth in paints in light of upcoming biocide legislation in Europe ? / Anders Larsson in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4653 (08/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4653 (08/2019) . - p. 20-21 Titre : How can we handle microbial growth in paints in light of upcoming biocide legislation in Europe ? Type de document : texte imprimé Auteurs : Anders Larsson, Auteur ; Stig Bardage, Auteur ; Petter Melin, Auteur ; Lars Hamberg, Auteur Année de publication : 2019 Article en page(s) : p. 20-21 Langues : Anglais (eng) Catégories : Antimicrobiens Chimie industrielle -- Législation -- Pays de l'Union européenne Peinture -- Industrie -- Législation -- Pays de l'Union européenne Revêtements -- Additifs:Peinture -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Within the European union, biocidal product is defined as a chemical substance or micro-organism with the intention of destroying, deterring, rendering harmless, preventing the action of, or otherwise exerting a controlling effect on, any harmful organism by any means other than mere physical or mechanical action (Regulation (EU) 528/2012). A paint contains pigments and binders. Additives and solvents, such as water are added to optimise the paint performance. The paint formulation is often a liquid formulation due to the ease of application to reach the protective, aesthetic and other intended functions a coating film may have in order to protect the substrate beneath. Despite this, about half of the material is lost during paint film formation. Due to environmental and health and safety concerns there has for many years, been a trend to switch the paint medium from organic solvents to water. The formulations had to be re-designed to incorporate a hydrophobic paint binder into a hydrophilic water medium. Furthermore, the addition of water into the formulation makes the can a suitable habitat for micro-organisms, such as bacteria, algae and fungi, which can survive in both aerobic and anaerobic conditions. That is the place the paint is stored after production until application and use of the peint. The traditional way to prepare a peint has been to optimise all paint parameters and towards the end, add sufficient amount of biocide ta inhibit microbiological growth. Note de contenu : - IN-CAN PRESERVATION AND STORAGE : Learnings from other industries eg food industry - Change pH - Reduce nutrient availability - Enhancing or boosting biocide performance - Using paint from the in-can bottle - PAINT FILM PRESERVATION En ligne : https://drive.google.com/file/d/1qlEOw2Tjdx-yI68qtt1a7o4OGiCz5Xgi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32881 [article]

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Modern measurement of effect pigments - useful and useless geometries / Werner Rudolf Cramer in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4653 (08/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4653 (08/2019) . - p. 27-29 Titre : Modern measurement of effect pigments - useful and useless geometries Type de document : texte imprimé Auteurs : Werner Rudolf Cramer, Auteur Année de publication : 2019 Article en page(s) : p. 27-29 Langues : Anglais (eng) Catégories : Mesure Pigments -- Propriétés optiques Pigments à effets spéciaux Index. décimale : 667.2 Colorants et pigments Résumé : The selection of necessary measurement geometries is based on the optical-physical properties of the pigments. As a rule, one geometry is sufficient to read colour pigments in a car colour. Usually, this is illuminated at 45° and measured at 0° (from the normal). Alternatively, sphere geometry is used. To measure aluminium pigments with their varying brightnesses, several geometries are needed to detect these brightness changes. Measurements at a fixed illumination and aspecular angles show the increase in brightness the Gloser to gloss is measured. Due to the Fresnel law, these changes in brightness are not linear. Particular attention is paid to the interference pigments found in most car colours. The colourful interference pigments change their brightness and their colour, while white interference pigments show no colour changes. The optical properties of the interference pigments are described by the interference law. This law shows the dependence of the resulting colour on the angle of the incident light. The flatter the illumination, the more the reflection maximum shifts to shorter wavelengths, ie red interference pigment turns yellow, a green one gets bluer and it increases non-linearly. If these properties are not met, the colour measurement is not plausible. Due to these optical-physical properties, interference pigments can be optimally described with three illumination angles: a steep (eg 15°), the classic at 45° and a flat angle (eg 65°) with the same difference angle of 15°. Illumination angles that lie between these geometries result in no additional information. The Gloser to the gloss angle, the larger the differences in the reflection peaks (maxima) become. Mostly, this series "breaks off" at 5° from gloss. Often the measurements at 10° off gloss appear critical. The usual 15° of gloss (aspecular) is "stable" at all illumination angles. If a colourful, transparent interference pigment is applied to a white background as described above, the measurements at a fixed illumination of 45° produce a colour change between the reflection and the transmission colour in the range of 20° and 30° from the gloss angle. Note de contenu : - Fig. 1 : Below : With flatter illumination of interference pigments, their maxima shift to shorter wavelength. At the same Lime their maxima increase - Fig. 2 : a*b*-values of many geometries show a pattern which can be reduced on a few geometries. These geometries characterise any interference pigment - Fig. 3 : Readings at 5° off gloss are not plausible because the difference between maxima must increase - Fig. 4 : Colour interference pigments change their reflection colour to the complementary transmission colour if applied on a white ground. The transition area is between 20° and 30° off gloss. With portable instruments you find the change mostly between 45°/as25° and 45°/as45° - Fig. 5 : Typical description of an interference pigment: Interference fines are based on values measured near gloss. And aspecular Unes are going off gloss. At 45°/as75° and 45°/as110° there are strange behaviours on a white ground - Fig. 6 : Except 15°/a515°, aspecular geometries at 15°-illumination show no additional information to describe an interference pigment En ligne : https://drive.google.com/file/d/1RHgjCIJfOzesKgKmvRbhEV6XFCBb1VJB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32882 [article]

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Research progress on environmentally friendly acrylate polymers / Yilu Gong in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4653 (08/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4653 (08/2019) . - p. 48-50 Titre : Research progress on environmentally friendly acrylate polymers Type de document : texte imprimé Auteurs : Yilu Gong, Auteur ; Tantan Shao, Auteur ; Lijun Chen, Auteur Année de publication : 2019 Article en page(s) : p. 48-50 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Emulsifiants Polyacrylates Polymères -- Aspect de l'environnement Polymères en émulsion Polymères hydrosolubles Surfactants Index. décimale : 667.9 Revêtements et enduits Résumé : Acrylate polymer emulsions are widely used in synthetic rubber, surface coatings, adhesives, textiles, aerospace manufacturing, pharmaceuticals, plastics and many other fields. At present, the requirement of the state and the government for environmental protection is becoming more strict, which makes the development of environmentally friendly acrylate polymer emulsions more and more imperative. In this paper, the research progress of environmentally friendly acrylate polymer emulsions is reviewed and summarised, including the study of water-soluble acrylates, the research of new emulsifiers acrylate polymers, the use of polymerisable surfactants, and the modification of acrylate polymers. It also provides a reference for the application of environmentally friendly acrylate polymer emulsions. Note de contenu : - Water soluble acrylate polymer - New emulsifier acrylate polymer - Polymerisable surfactant - Modified acrylate polymers En ligne : https://drive.google.com/file/d/1RAN8fP7fdOC2e-ZTLIojUjZPvclSAFvz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32883 [article]

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High performance industrial finishes simulate stainless steel, brass and copper at a fraction of the cost / Del Williams in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4653 (08/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4653 (08/2019) . - p.52-53 Titre : High performance industrial finishes simulate stainless steel, brass and copper at a fraction of the cost Type de document : texte imprimé Auteurs : Del Williams, Auteur Année de publication : 2019 Article en page(s) : p.52-53 Langues : Anglais (eng) Catégories : Métaux -- Revêtements:Métaux -- Peinture Revêtements -- Finition:Peinture -- Finition Index. décimale : 667.9 Revêtements et enduits Résumé : The author explains how a durable coating and substrate meet or exceed industry tests, while resisting scratches, stains and fingerprint. Stainless steel is a premium material used in the manufacturing of a variety of products but its high price has made it unaffordable to many customers. While simulated stainless steel laminates have lowered the cost of achieving the "look of stainless steel", industry innovation has made attaining a stainless steel finish much more affordable. In one such innovative approach, a high-performance industrial finish — comprised of a protective coating, paired with a special substrate — is adhered to a variety of lower cost metals. The durable combination results in the brilliance of a polished and brushed stainless steel look. It also meets or exceeds a battery of domestic appliance tests, such as that for kitchen and laundry appliances and resists scratches, stains, chemicals and fingerprints. In the appliance sector, for instance, this enables larger designer appliances — including refrigerators, freezers, ovens, dishwashers and washing machines, as well as smaller items, such as microwave ovens, ranges and fume hoods — to continue to have products that look like stainless steel but at a significantly lower cost. A similar approach is also being used by manufacturers in other markets to simulate a wide range of brass and copper coated products ranging from blinds and curtain rods to decorative food containers and tobacco tins, as well as cosmetic and mason jar lids. Note de contenu : - A cost-effective alternative - Protecting the bottom line En ligne : https://drive.google.com/file/d/19wrCX7X5jc4WRvspVq_edsCa8ii_dXqM/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32884 [article]

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Polymer Paint Colour Journal Vol. 209, N° 4653 URL