Session 25: Architectural Coatings II
Chair: Dr. Kerstin Gohr, Celanese Emulsion, DENowadays the coating formulator is faced with major reformulation challenges to create coatings that minimize the impact on the environment and yet also meet important performance requirements. The second architectural coatings session discusses improved materials such as surfactants and amino alcohols enabling the formulation of environmentally friendly paints. Another focus lies on coatings with improved performance and functionality.
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Wednesday Afternoon 14.00 - 17.30 h
Room Kiew
25.1 14.00 – 14.30 h A newly-introduced, low odor, amino alcohol that helps enabling architectural paint producers to meet 2010 VOC requirements Emmanuelle Yvon, Dow Europe, CH Meeting 2010 VOC paint limitations, such as those set in EU Directive 2004/42/EC, can present a challenge for paint producers, especially in terms of product performance. Amino-methyl-propanol (AMP) has a well established history of providing key multifunctional benefits to paint formulations, including neutralizing and dispersion properties, but is classified as a VOC. The necessity for a non-VOC amino alcohol has led to the development of an improved version of amino-ethyl-propan-diol (AEPD). This amino alcohol is a primary amine with improved color and odor properties, low vapor pressure, a high boiling point, a non-yellowing characteristic and is a classified as VOC-free in Europe. Additionally, this new version of AEPD offers the same excellent performance benefits as AMP in terms of co-dispersion efficiency, neutralization, scrub resistance and color stability with the added benefit of an improved odour profile, making it a clear choice as a multifunctional amine for VOC-free paints. Although similar in structure to AMP, an additional hydroxyl function in AEPD allows for an extension in the open time without impairing the scrub resistance. Additionally, AEPD has been shown to have significant coalescent properties allowing for reduction in primary coalescent levels and other VOC materials.  | ||
| 25.2 14.30 – 15.00 h Next generation opaque polymer technology and its application to alkyd paints Alain Garzon, Rohm and Haas, FR Since its introduction over 25 years ago, opaque polymer (OP) technology has undergone significant improvements thanks to continuous research and development efforts. This work allowed an unrivalled understanding of the principle of hiding technology and in the design of polymer particles and their process. Today, many paint formulators are using opaque polymer not only to lower formulation cost, by reducing TiO2 usage, but also to improve paint properties such as hiding, exterior durability, brightness, scrub resistance, etc. OP has become a standard raw material used in the formulation of waterborne paint for both interior and exterior applications. Further developments in OP technology and formulation know-how now permit the creation of alkyd-based paints which incorporate the benefits and advantages of using OP. This paper will discuss the next step in OP technology and how alkyd paint formulators can use it to create new cost-performance balances. | ||
| 25.3 15.00 – 15.30 h Strategies to minimise soiling and biofouling of exterior coatings Dr. Anders Larsson, YKI, Ytkemiska Institutet AB, SE Soiling and biofouling affect negatively the appearance of architectural coatings and consequently also the value of the property it is painted on. Furthermore on moving objects such as boats, tankers and wind mills biofouling can increase the friction towards water and air respectively lowering the efficiency of the moving object. In the case of boats and tankers it will increase the costs for fuel and maintainance. In the case of wind mills it will decrease the leverage of energy to the society and decrease the value of the wind mills for the owner. We will in this talk briefly outline how dirt and microorganisms adhere to coatings. After that we will outline different strategies to avoid or minimize dirt adhesion and dirt retention. It will cover such aspects as adhesion minimization, self-cleaning coatings, erodable coatings, pro-longed activity of biocides and degradation of biofilms. 15.30 – 16.00 h Networking: Refreshments & Coffee Break | ||
| 25.4 16.00 – 16.30 h Next generation environmentally friendly surfactants for architectural paint applications Dr. Luis Madrigal, Dow Europe, DE Advanced design techniques have led to the development of novel surfactants which enable the coatings industry to comply with existing and upcoming EU regulations, without compromising coating performance. EU Directives have increased regulation on raw materials for paint and coating applications. In the case of surfactants, the requirement is for both products with excellent performance and also having low VOC contents, biodegradable and label free. This paper describes Dow`s development of a new surfactant based on an alkoxylated secondary alcohol. The project focused on the need for a product with equivalent or better dispersing properties than traditional APE based products. High through-put testing accelerated the identification of synergistic effects between the alcohol moiety and the EO, PO and BO alkoxylated chains. The new family of surfactants was evaluated in various decorative paint formulations and demonstrated excellent dispersant performance, low foaming, stability, optical properties, and mechanical properties. | ||
| 25.6 17.00 – 17.30 h Low odor in paints: what does it mean & how can it be managed Paul Doll, Rohm and Haas, US While more and more reduced odor paints continue to proliferate throughout the global market, there is much confusion over how to measure, manage and communicate this attribute. Methods to reliably and quantitatively measure the odor intensity and pleasantness of commercial low odor paints from around the globe are presented. Using gas chromatography the volatiles from these paints are easily defined and then additional analytical methods are presented that determine a relative contribution of each of the odorants. The data provides further confirmation that in near zero VOC paints odor is no longer driven by the large VOC contributors but rather by trace compounds. This linking of individual odorants and their concentrations with the perceived odor of the paint is key towards developing sustainable solutions that manage their odor. | ||
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