Duurzame Bindmiddelen voor de Verfindustrie Dr. Dirk Mestach R&D Manager Wood Decorative & Construction EMEA Studiemiddag: Green, Biobased, LCA Dinsdag 28 mei 2013, Nieuwegein
INTRODUCTION The Coatings Industry in 2013 Uncertain economical conditions. Stay competitive as an industry: a clear need to invest in the development and implementation of new technologies Environmental pressures and regulations: remain the main drivers of the coatings industry in the years to come. 2
Sustainable Development "Development is sustainable when it meets the needs of the present without compromising the ability of future generations to meet their own needs." the Brundtland Report (1987) 3
Sustainable Resin Production Reduction of the usage of resins Reduction of total layer thickness Improved durability Reduction of the environmental impact of the production process Use of energy / water Emission of CO 2 Replacement of non-renewable resources by bio-based raw materials 4
The Coating Resins Innovation Chain 5
Carbon Footprint Methodology 6
Carbon Footprint Methodology (cont.) Cradle to Gate: Raw material selection Transport Energy / heat Waste Resin Manufacturer Cradle to grave: Durability of the coating Cradle to cradle: close the loop and recycle 7
Carbon Footprint of Oxidatively Drying Coating Resins 3 Largest contribution comes from the raw materials 2.5 CO2 eq/resin (t/t) 2 1.5 1 0.5 Waste Transport Energy Raw Mat 0 SB Alkyd Fatty acid modified PUD Alkyd Emulsion 8
Origin of Raw Materials for Coating Resins 9
Composition of an Alkyd Resin Schematic impression of an alkyd resin used as a binder compound in alkyd paint. The fatty acid chain shown is linoleic acid. Polyols Oils/fatty acids Polyacids 10
Raw Materials Used for Alkyd Resins 11
Oils and Fatty Acids Limited sources for vegetable oils: Strong competition with: Food & Feed Grain Maize. Production of bio-fuel. Investigate oils from other sources: Valorization of by products from the wood pulping industry Microbial oil (derived from cellulosic waste streams) Algea oil (using CO 2 and waste streams from sugar/potato processing industry) 12
Bio-based Polyols Drop-in for existing polyols Bio pentaerythritol: derived from bio-products of the bio-diesel production Glycerol 1.2 propanediol 1.3 propanediol... New polyol structures Isosorbide Lactide 13
Bio-based Polyacids Drop-in for existing polyacids Terephthalic acid Bio-succinic acid New polyacid structures Furane dicarboxylic acid 14
Sustainable High Solids Alkyd Development Aimed at the decorative markets Solids content 90 % VOC < 275 g/l (2010 compliant) Raw material options: Fatty acid that does not interfere with the Food & Feed chain (reference) Renewable polyols Partial replacement of polyacids with renewable polyacids - Bio-succinic acid - Furane dicarboxylic acid Solvent: low aromatic white spirit (D40) or dimethyl succinate (bio-based) 15
Bio-based Content (on solid resin) % bio-based based raw materials (on solids) 100 95 90 85 80 75 70 65 60 55 50 + 30 % Reference Bio-penta Furane dicarboxylic acid (FDCA) Bio-succinic acid FDCA + Biosuccinic acid 16
Effect of the Solvent Viscosity (Pa.s) 5 4 3 2 1 0 D40 Dimethyl succinate D40 Dimethyl succinate 100 90 80 70 60 50 40 30 20 10 0 Bio-based content (%) Reference Viscosity (Pa.s 23 C) Bio-succinic acid Bio-based content (solution) 17
BK-Drying 25 Drying time (h) 20 15 10 5 Alkyd 55,56 Co 6% Zr 9% 0.88 Zr 12% 0.88 Ca 10% 1.25 Phase 4 Phase 3 Phase 2 Phase 1 75 µm wet 0 Reference D40 DMS HS Alkyd Bio-succinic acid modified 18
Hardness Development D40 Solvent Persoz Hardness (s) 80 75 70 65 60 55 50 45 40 35 30 0 5 10 15 20 25 30 Drying time (days) Reference Bio-succinic acid 19
Hardness Development Dimethyl succinate 60 55 Persoz Hardness (s) 50 45 40 35 30 25 Reference Bio-succinic acid 20 0 5 10 15 20 25 30 Drying time (days) 20
Carbon Footprint of Sustainable Alkyds 2 1.8 1.6 1.4 1.2 1 90 Renewable raw materials on resin solution (%) 0.8 0.6 0.4 80 70 60 50 40 30 20 Raw mats kg CO2 equiv / kg resin solution 0.2 0 2.43 1.75 1.19 MS LOA (70 % solids) HS LOA (90 % solids) Sust. HS LOA (90 % solids) 10 0 Electricity Heat Transport Waste Total First commercialized product Renewable raw mats 21
First Commercialized Product: Setal 900 SM-90 Property Value Unit Acid value (as such) 4.4-8.2 mg KOH/g Appearance clear and clean Colour GARDNER (Lico 200) max. 8.0 Gardner Non-Volatiles 89-91 % Solvent D40 type Viscosity (23 C at 100s -1 ) 2.5-4.5 Pa.s ASTM D-6866-12: Bio-based vs Fossil based indicated by 14 C content 22
What s Next? Eliminate the petrochemical solvent Use of bio-solvents Emulsify the alkyd in water (with bio-based surfactants) Use bio-based building block as they become commercially available Sustainable acrylic dispersions 23
Thank you for your attention Chemistry behind everyday products everywhere 24