ATIPIC SCIENTIFIC & TECHNICAL SYMPOSIUMOn 15 décembre 2023 by jennifer.demeuldre
Date: Thuesday FEBRUARY 6th 2024
Time: 9:30 hrs. – 16:00 hrs.
Venue: Martin’s red hotel**** Rooms Russia A&B
Rue de Bruxelles, 484 – B 1480 Tubize
The ATIPIC members are kindly invited to the 2024 ATIPIC General Assembly that will take place at the end of the morning session, before the lunch.
|PROGRAM / Titles
|Welcome /Registration (coffee/tea) in room Russia B
|Opening by Dr. Jacques Warnon, president ATIPIC (room Russia A)
|Functionalisation of Surfaces by Laser textured Nanocellulose Coatings
|Dr. Pieter Samyn (Sirris)
|The Use of Monofunctional Polyetheramines in Waterborne Epoxy Resins
|Ing. Steven Buvens (Huntsman)
|Highly branched vinyl esters-based intumescent coatings
|Dr.Ludivine Augry (Hexion)
|ATIPIC General Assembly (only for ATIPIC members)
|New Iron-based Light-activated Alkyd Drier.
|Dr. Jitte Flapper (Akzo Nobel)
|Controlling the Gloss of Coatings without compromising Performance
|Dr. Jurgen Scheerder (Covestro)
|Water-borne one component self-crosslinking polymer dispersions with high chemical resistance properties meeting Ikea R2
|Marcel Meeuwisse (Allnex)
|Closure and networking drinks in the “Sport Bar” of the Hotel
10:05 hrs. – Functionalisation of Surfaces by Laser textured Nanocellulose Coatings – Dr. Pieter Samyn (Sirris)
The creation of bio-inspired functional surfaces aims to mimic biological chemistries and topographies in order to introduce given functionalities. The nanocellulose materials are emerging as natural functional materials with favourable properties for coatings industry, mostly known for its rheological properties or as a stabilizing agent when added to dispersion coatings. The shear thinning effect of nanocellulose suspensions allows for fluent application by spray coating in thin layers. In this research, the parameters for spray-coating application of both cellulose nanofibrils (CNF) and cellulose nanocrystals (CNF) have been screened for the deposition of coatings with controllable thickness depending on the viscosity and application conditions.
Afterwards, the laser texturing of the coatings has been applied in order to introduce relevant surface patterns for specific applications. Depending on the nanocellulose type and coating thickness, the operational window for the laser texturing process has been determined to fabricate reproducible geometrical features. The tuning of laser power, rate and hatch pitch allows to enhance porosity of the coatings, or create island repetitive line patterns, island domains, etc. with controllable geometry. Based on experience, the transfer of laser textures from traditional polymer surfaces towards soft natural coatings is illustrated. Within our recent projects, the laser textured nanocellulose coatings are applied for antimicrobial properties or hydrophobic protection.
10:40 hrs. – The Use of Monofunctional Polyetheramines in Waterborne Epoxy Resins – Ing. Steven Buvens (Huntsman)
Epoxy systems play a role in coatings mostly due to their outstanding performance in corrosion protection and chemical resistance. Two component epoxy/amine hardener systems are widely used for civil engineering, marine and maintenance epoxy coatings, which predominantly require curing at ambient temperatures. Even today, many epoxy based coatings are still formulated with solvents. However, as environmental regulations become more stringent, the further need for the industry to switch to more ecological and safer systems is constantly growing.
Thus, most efforts are in replacing solvent-borne coatings with environmentally friendly alternatives like for instance water-borne coatings with similar properties. With these driving forces in mind, the use of suitable ‘surfactants’ to emulsify the epoxy resin in water has been an ongoing and exciting journey for the development of our monofunctional polyetheramines. Since most non-ionic surfactants used as water-borne coating emulsifiers are based on long blocks of polyethyleneoxide (PEO) as the hydrophilic, it is logical to consider the use of reactive polyethers (alcohol or amine) as modifiers of hydrophobic epoxy resins in the self-emulsification process. Self-emulsification of epoxy resins can be done by adducting a part of the epoxy resin with such reactive polyethers (alcohol or amine). The resulting epoxy adduct serves as internal reactive surfactant for the remaining epoxy resin. The epoxy reactive surfactant becomes a part of the epoxy matrix upon final cure when mixed with the amine hardener preventing surfactant leaching when exposed to water condense or rain. The use of polyetheramines in the making of an epoxy emulsion or dispersion on lab scale will be demonstrated starting from a standard LER or SER. The resulting self-made emulsion / dispersion will be compared with commercial binder / water borne hardener combinations in a clear and white epoxy coating.
11:15 hrs.- Highly branched vinyl esters-based intumescent coatings – Dr.Ludivine Augry (Hexion)
Intumescent paints are special paints that expand when exposed to heat, providing fire protection. The binders used in these paints affect their flow and help create a heat-resistant char layer. Upon heating, polyvinyl acetate binder undergoes a reaction that strengthens the protective layer. However, other factors like storage stability and durability are important too. Co-monomers can improve these properties but sometimes hinder expansion. Vinyl neodecanoate is an ideal co-monomer for the production of hydrophobic latices for a wide range of environmentally friendly water-based coatings. Vinyl neodecanoate is a truly versatile monomer that can easily react via free-radical polymerization with vinyl acetate. The incorporation of its highly branched hydrophobic structure enhances the latex and final application properties in many respects, in particular regarding stability, durability, adhesion, as well as water and alkaline resistance, while at the same time improving intumescent performance. In our study, we compared different water-based binders. Vinyl binders had excellent expansion and fire protection, while acrylic and styrene-acrylic binders had less expansion. Copolymerization with vinyl neodecanoate greatly improved expansion and fire protection
14:05 hrs. – New Iron-based Light-activated Alkyd Drier – Dr. Jitte Flapper (Akzo Nobel)
As a result of (expected) relabeling of cobalt-based materials, cobalt-free alkyd driers (based on iron or manganese) have been developed. Although these new driers perform similar to cobalt in many aspects, particularly hardness development is decreased. As anti-skinning agent, oximes like methyl ethyl ketoxime (MEKO) or 2-pentanone oxime (2-PO) are commonly used, but their use is also under legislative pressure. We will present a new alkyd drier which could potentially overcome the legislative and performance challenges described above. This drier is based on an abundant and environmentally benign metal (iron) and does not require an anti-skinning agent. Oxidation of the complex CpFe(cyclohexadienyl) (Cp = cyclopentadienyl) yields the cationic CpFe(benzene), which is converted to the active alkyd drier after exposure to (visible) light. The complex is the first example of a cobalt-free alkyd drier that matches the performance of cobalt-based driers not only in drying speed, but also in hardness development. As the complex is only active in the light, no anti-skinning agent is required to suppress drying activity upon storage (as no light penetrates the paint can).
14:40 hrs. – Controlling the Gloss of Coatings without compromising Performance – Dr. Jurgen Scheerder (Covestro)
To control the gloss of coatings matting agents like silica or waxes are used. While these are effective in lowering the gloss they tend to negatively affect coating performance. In this paper we present a waterborne, micron-sized binder technology that lowers the gloss of coatings without compromising their performance. These micron-sized polymer dispersions are not film forming and must be combined with film forming binders. The technology controls the gloss of coatings through the size and amount of the particles used. To prevent settling and sedimentation of the micron-sized particles, strategies will be shared that deliver storage and transport stable dispersions. We will demonstrate that these micron-sized binders are compatible with various waterborne binder technologies for applications including industrial and architectural coatings. Since the micron-sized particles come in the form of waterborne polymer dispersions they eliminate the need to handle powdery materials like silica, which brings significant health and handling benefits. All in all, these organic matting agents offer a cost effective method to control the gloss of coatings without sacrificing performance.
15:15 hrs. – Water-borne one component self-crosslinking polymer dispersions with high chemical resistance properties meeting Ikea R2 – Marcel Meeuwisse (Allnex)
Increasing concerns about the sustainability of solvent-borne coatings, combined with a growing awareness of all factors contributing to the carbon footprint related to the coating of furniture, is causing a demand for one-component coating systems curing at low temperature conditions. One of the industry standards commonly used in furniture coatings are DIN 68861 and the IKEA IOS MATT 0066. For the latter one especially resistance against coffee and 48% ethanol are hard to reach when a one-component waterborne acrylic is used. In this presentation we will demonstrate how we arrived at a coating composition was developed using a combination of crosslinking chemistries and particle morphology that allowed us to formulate pigmented matt coatings that comply with the IKEA R2 standard. Furthermore these binders can be made with raw materials that result in concentrations of bio-based carbon above 30% without detracting for the final performance properties.
REGISTRATION FEES (Lunch included)
ATIPIC/AFTPVA/NVVT member: 90,00 EUR (VAT included)
Retired ATIPIC/AFTPVA/NVVT member 40,00 EUR (VAT included
Non ATIPIC/AFTPVA/NVVT member : 180,00 EUR (VAT included)
Retired non ATIPIC/AFTPVA/NVVT member: 80,00 EUR (VAT included)
REGISTRATION & CANCELLING
Registrations are to be made at the latest by January 30th 2024 and exclusively with this link:
The payment has to be made by transfer on the ATIPIC banking account number
BE22 2710 6182 9347 before January 30th 2024.
Please mention your first name and last name as communication on your bank transfer.
To cancel your registration please contact by mail email@example.com at the latest by February 1st 2024.
Any cancelling after this date will induce the sending of an invoice for the mentioned amount on the fill-in registration form.