Du Pont Cerenol A New Family of Sustainable

Du. Pont™ Cerenol™ A New Family of Sustainable and Environmentally Friendly Materials The 12 th Annual Green Chemistry and Engineering Conference June 24 -26, 2008, Washington DC Hari B Sunkara Du. Pont Central & Research Development

2 Agenda • Introduction – Du. Pont sustainability goals – PDO based polymers and products • Du. Pont™ Cerenol™ – Products, processes and properties • Cerenol™ vs Commercial Polyols • Cerenol™ Based Products – Hytrel® RS Thermoplastic Elastomers – Performance Coatings

3 Sustainable Growth Trends • Growth in developing countries • Increased food production • Renewable energy and materials • Greater safety and security • Increased connectivity

4 Du. Pont 2015 Sustainability Goals Marketplace goals • Double R&D investment in environmentally smart market opportunities. • Grow annual revenue $2 billion or more from products that create energy-efficiency and/or reduce greenhouse gas emissions. • Double annual revenue to $8 billion from non-depletable resources. • Introduce at least 1, 000 new safety products or services.

5 Du. Pont Applied Bio. Sciences uses science to bring breakthrough biotechnology-based products to the world. • Du. Pont Tate and Lyle Bio PDO™ manufacturing facility • Businesses – Bio. Materials – Bio. Fuels – Bio. Specialties – Bio. Medical • Key Products – PDO-based polymers and products – Biobutanol/Cellulosic ethanol – Peptides – Medical adhesives & embolics – Omega-3 fatty acids

6 Bio-PDO™ serves as a building block for diverse applications and markets Ingredient Brand Markets Examples of final product brands Textile Fibers • Smartstrand Carpet Fibers Bio-PDO™ Resins, Films, etc. • Zemea™ • Susterra™ Direct Applications Specialty Applications Elastomers • Zemea™ & Susterra. TM are registered trademarks of the Du. Pont Tate & Lyle Bio Products Company Stretch Fibers

7 Agenda • Introduction – Du. Pont sustainability goals – PDO based polymers and products • Du. Pont™ Cerenol™ – Products, processes and properties • Cerenol™ vs Commercial Polyols • Cerenol™ Based Products – Hytrel® RS Thermoplastic Elastomers – Performance Coatings

8 Cerenol™ is a family of high performance renewably sourced polyols Biomass Feed Stock Bio-PDO™ Cerenol™ • Zemea™ • Susterra™ Products Structure H Homopolymer (H-Series) Copolyetherglycol (G-Series) Polyetherglycol ester (E-Series) H [ ROCO [ O C C O ]OH n C C C Bio Content C O O n C 100% ] OH OCOR 70 -80% 50 -60%

9 Cerenol™ uses an environmentally Friendly Process Cerenol™ batch manufacturing facility Process benefits • Renewably sourced ingredient • One step polycondensation process • Safer manufacturing process • Less energy consumption • Less GHG emission • Low toxic product • Inherent Biodegradability

10 Cerenol™ Commercial Homopolymers • Typical Property Ranges Property Cerenol H 650 Cerenol H 1000 Cerenol H 1400 Cerenol H 2000 Cerenol H 2400 Molecular weight 600 - 700 900 - 1100 1300 - 1450 1900 - 2100 2300 - 2500 Hydroxl number 187. 0 - 160. 3 124. 7 -102. 0 86. 3 - 77. 4 59. 1 - 53. 4 48. 8 - 44. 9 0. 02 max ~2 ~2 ~2 -2. 0 - 2. 0 50 max 50 max Melting point (Tm), o. C 9 - 11 12 - 14 15 - 17 16 - 18 17 - 19 Density @ 40 o. C, g/cc 1. 019 1. 018 1. 017 1. 016 Viscosity @40 o. C, c. P 100 - 150 190 - 260 310 - 420 720 - 850 950 - 1100 Unsaturation, meq/g OH Functionality Alkalinity, meq/30 kg Color, APHA

11 Cerenol™ has led to multiple inventions on products, processes and uses • Filed applications on product, process and applications • Filed applications by market Specialty polymers Product & Processes Product Applications Functional fluids Coatings & Inks Personal care Fibers >90 US Patent Applications Filed 60 Granted/Published

12 Agenda • Introduction – Du. Pont sustainability goals – PDO based polymers and products • Du. Pont™ Cerenol™ – Products, processes and properties • Cerenol™ vs Commercial Polyols • Cerenol™ Based Products – Hytrel® RS Thermoplastic Elastomers – Performance Coatings

13 Cerenol™ compares best to high performance polyether diols • Petroleum Based Synthetic Polyether Diols – Polyethylene glycol (PEG) – Polypropylene glycol (PPG) – Polyethylene-propylene glycols (EO/PO) – Polytetramethylene ether glycol (PTMEG) • Vegetable Oil based Polyols (Oleochemical Polyols) – Soy bean oil based polyols – Castor oil

14 Cerenol™ is an ideal soft segment for thermoplastic elastomers • Properties of Cerenol™ vs. other Polyols

15 Cerenol™ is relatively amorphous and easy processable polyol • Properties of Cerenol™ vs Fossil fuel based Polyols

16 Cerenol™ has comparable Thermo-oxidative stability vs. PTMEG in spite the higher ether links • Cerenol™ vs PTMEG Isothermal at 175 o. C in air 120 ––––––– PTMEG 1400 Cerenol 1400 16. 00 min 99. 12% 100 16. 00 min 97. 99% Weight (%) 80 60 58. 54 min 50. 00% 59. 01 min 50. 00% 40 92. 24 min 20. 00% 20 0 92. 12 min 20. 00% 0 20 40 60 80 100 Time (min) 120 140 160 180 20 Universal V 4. 2 E

17 Cerenol™ is an excellent ingredient for both thermoset and thermoplastic polymers • Properties of Cerenol™ vs. Biobased polyols Typical Properties Cerenol™ H 2000 Biobased Polyol Molecular weight 2010 1700 1100 56 56 235 Primary Secondary 2 2 (average) 4. 4 (average) 1840 4500 8900 1. 02 (40 o. C) 1. 00 1. 01 50 APHA (Max) <1 G <2 G > 230 > 130 >130 Acid value, mg KOH/g 0. 003 0. 30 1. 7 Water, ppm <500 3000 Hydroxyl number, mg KOH/g Hydroxyl type OH Functionality Viscosity @ 25 o. C, c. P Density, g/m. L Color Flash point, o. C

18 Cerenol™ reduces the environmental footprint vs. PTMEG (cradle to gate life cycle analysis) Fossil Energy Greenhouse Gas Emissions 40% 3 (Industry average 4) 1 Industry Average: 39% Reppe, 26% GEMINOX, 21% Davy, 14% Mitsubishi 42% 3 (Industry average 4)

19 Agenda • Introduction – Du. Pont sustainability goals – PDO based polymers and products • Du. Pont™ Cerenol™ – Products, processes and properties • Cerenol™ vs. Commercial Polyols • Cerenol™ Based Products – Hytrel® RS Thermoplastic Elastomers – Performance Coatings

20 Cerenol™ Based Products from Du. Pont • Du. Pont™ Hytrel® RS Thermoplastic Elastomer – 25 -60% Renewable content – Comparable performance to standard grades of Hytrel® • Performance Coatings for new automotive primers and clearcoats – Cerenol™ is used as an additive – Improved flexibility and chip resistance • Imron® polyurethane enamels -– Superior durability, gloss and color retention

21 Cerenol™ is more compatible with PBT Hard segment than PTMEG Soft segment content (%wt) 60 CLEA R MELT PTME G 40 Cerenol ™ 20 PHASED MELT 1000 1500 2000 Polyether Polyol Mn (g/mol) 2500

22 Cerenol™ enhances performance of COPE resins Less Stiffness at - 40 o. C Improved elastic recovery Renewable Standard

23 Cerenol™ vs. PTMEG-COPE Aging Performance HEAT UV Cerenol™ Sample OIL PTMEG Sample Changing from PTMEG to Cerenol™ as a soft segment does not impact aging despite the increase in ether linkages

24 Cerenol™ in Performance Coatings (US Patents: 6, 875, 514; 7, 169, 475; 7, 268, 182) Control Cerenol™ formulation Durability of Clear coats • Improvement in chip resistance • Improvement in flexibility • 4+ years of Florida exposure • Hardness retention • Comparable or better retention of gloss and DOI

25 Cerenol™ in Performance Coatings • Adhesion Improvement • Decrease in coating dry time

26 Contact information • www. cerenol. dupont. com • www. renewable. dupont. com