OUDRASperse WB 4001 Waterborne Epoxy Dispersion

Transcription

1 Technical Data Sheet OUDRASperse WB 4001 Waterborne Epoxy Dispersion Description OUDRASperse WB 4001 is waterborne dispersion of an epoxy novolac resin (f=3.6), being manufactured without the use of solvent. It is supplied at 58% solids in water and is designed for use in two-component coating systems. The solvent-free nature of the dispersion allows the formulator complete latitude in meeting even the strictest of VOC regulations, with capability of formulating to ultra low VOC. Additionally, the high functionality of the epoxy novolac resin provides films with inherently higher crosslink density, yielding high performance coatings with superior resistance properties. Features and Benefits Solvent-free formulation capability High functionality (f=3.6) Manufactured without the use of APEO surfactants Low odor Shear stable Fast dry Excellent corrosion resistance Easy water clean-up Physical Properties Property Value* Solids Content, % 58 Epoxy Equivalent Wt (g/eq, as is) 330 MFFT ( C) 0 Viscosity, cp 6000 Density, kg/l 1.11 Appearance Milky White * Typical properties, not to be construed as specifications. Page 1 of 6

2 Starting Point Formulation An Anticorrosive Primer starting point formulation based on OUDRASperse WB 4001 Epoxy Dispersion dispersion is provided below (WBED ). When applied at 12mil dry film thickness (DFT) to blasted hot-rolled steel (bhrs), this primer shows excellent corrosion resistance after 1500hours of continuous salt spray exposure, as displayed in the images below. Note that films were cured for 7 days at 25 C and 65% Relative Humidity (%RH) prior to salt spray exposure. Anticorrosive Primer for Metal Protection (<50 g/l) WBED Ingredients Pounds gallons Part A On high-speed mixer, disperse following in order Water Disperbyk Surfynol DF Surfynol Red iron oxide Zeeosphere Barytes Calcium Silicate halo SW Mica Reduce mixing speed and add Bentone LT OUDRASperse WB 4001 Epoxy Dispersion ACRYSOL RM-12W Part A subtotal Part B AnqaminE DOWANOL PM Glycol Ether Water Part B Subtotal Totals PVC 23.3% Volume Solids 39.3% Weight Solids 52.0% Density (lb/gal) VOC (g/l) 209 Stoichiometry (epoxy: amine) 1.4: 1 Page 2 of 6

3 A Mid-Coat/Build-Coat starting point formulation based on OUDRASperse WB 4001 Epoxy Dispersion is provided below (WBED ). A completely waterborne three coat system using WBED Anticorrosive Primer (4mil DFT), WBED Build Coat (5mil DFT), and a 2k water-based polyurethane Topcoat (2.5mil DFT) based on Maincote AU-28 was applied to bhrs and cured 7 days at 25 C and 65%RH. After 1500hours of continuous salt spray exposure, the observed corrosion resistance is excellent, as seen in the image below. Comparison of this total Waterborne system is made to a 3 coat analogous solventborne system based on commercial industry standards: SB epoxy Primer (6mil DFT) SB epoxy Build Coat (5mil DFT) 2k SB polyurethane Topcoat (2.5mil DFT) hours Salt Spray 1500 hours Salt Spray OUDRASperse WB 4001 SB Epoxy Commercial control DFT~12mil DFT~12mil Page 3 of 6

4 Starting Point Formulation Epoxy Novolac Midcoat for Metal Protection WBED Ingredients Pounds gallons Part A On high-speed mixer, disperse following in order DOWANOL PhB AnqaminE Byk Water Disperby Bentone LT Micaseous Iron Oxide Barytes Mica Talc AT Reduce mixing speed and add Anquamine Dynwet Byk ACRYSOL RM-12W Water Part A subtotal Part B ProSperse Part B Subtotal Totals PVC 34.6% Volume Solids 38.6% Weight Solids 54.9% Density (lb/gal) VOC (g/l) 151 Stoichiometry (epoxy: amine) 1.56: 1 Page 4 of 6

5 1500 hours Salt Spray 1500 hours Salt Spray OUDRASperse WB 4001 SB Epoxy Commercial control DFT~11.5mil WB Primer WB Bulld Coat 2k WB PU Topcoat DFT~13.5mil SB Epoxy Primer SB Epoxy Build Coat 2k SB PU Topcoat Raw Material Suppliers and Web Addresses Raw Material Supplier Name Web Address OUDRASperse WB 4001 Dow Chemical DOWANOL PnB Dow Chemical DOWANOL PM Dow Chemical ACRYSOL RM-12W Dow Chemical Anquamine 419 Air Products Surfynol DF-62 Air Products Surfynol 440 Air Products Disperbyk 190 Byk USA, Inc. Byk-011 Byk USA, Inc. Byk-425 Byk USA, Inc. Dynwet 800 Byk-USA, Inc. Red Iron Oxide Lanxess Zeeospheres 400 Zeeospheres Ceramics, LTD Barytes Sachtleben Wollastonite (Calcium Silicate) NYCO Halox SW-111 Halox Mica 325 Imerys Performance Minerals Talc AT-1 Luzenac Bentone LT Elementis Micaceous Iron Oxide Selective Minerals Page 5 of 6

6 Handling Precautions Before using this product, consult the Material Safety Data Sheet (MSDS)/Safety Data Sheet (SDS) for details on product hazards, recommended handling precautions and product storage. The product is frost sensitive. The product may need to be homogenized by gentle agitation prior to testing or use. Storage Store products in tightly closed original containers at temperatures recommended on the product label. Do not allow the product to freeze. The product should be stored in a dry place, ideally in the range of F in its original closed packaging. The product should maintain its properties for 12 months when properly stored. Disposal Consideration Dispose in accordance with all local, state (provincial) and federal regulations. Empty containers may contain hazardous residues. This material and its container must be disposed in a safe and legal manner. It is the user s responsibility to verify that treatment and disposal procedures comply with local, state (provincial) and federal regulations. Contact your Dow Coating Materials Technical Representative for more information. Product Stewardship Dow has a fundamental concern for all who make, distribute, and use its products, and for the environment in which we live. This concern is the basis for our product stewardship philosophy by which we assess the safety, health, and environmental information on our products and then take appropriate steps to protect employee and public health and our environment. The success of our product stewardship program rests with each and every individual involved with Dow products - from the initial concept and research, to manufacture, use, sale, disposal, and recycle of each product. Customer Notice Dow strongly encourages its customers to review both their manufacturing processes and their applications of Dow products from the standpoint of human health and environmental quality to ensure that Dow products are not used in ways for which they are not intended or tested. Dow personnel are available to answer your questions and to provide reasonable technical support. Dow product literature, including safety data sheets, should be consulted prior to use of Dow products. Current safety data sheets are available from Dow. Contact: North America: Latin America: (55) Asia Pacific: Europe: Middle East and Africa: (971) Notice: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer s use and for ensuring that Customer s workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to Dow or the Company mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED Page 6 of 6