Du Pont FEA1100 Zero ODP Low GWP NonFlammable

Du. Pont™ FEA-1100: Zero ODP, Low GWP, Non-Flammable Alternative for HCFC-141 b Helen Walter-Terrinoni Nov 12, 2010

Desired Properties for HCFC-141 b Phaseout • Environmentally sustainable Ø Zero ODP & Low GWP • Safety & Handling Ø Low Toxicity Ø Chemical stable Ø Non-flammable Ø Suitable boiling point (25 C - 35 C) • Good insulation performance Ø Low vapor thermal conductivity or Lambda Ø Flexibility to use high level of FEA • Low conversion cost Ø Potential drop-in to existing process & equipment Ø Potential drop-in to existing formulations 2

HCFC-141 b Phase-out Options HIGH ODP CFC-11 LOW ODP HCFC-141 b ZERO ODP HFC-245 fa HFC-365 mfc Pentanes Methyl Formate Methylal H 2 O(CO 2) Mixtures 3 Next Generation Low GWP Zero ODP FEA-1100 Next Generation Low GWP HBA-2 AFA-L 1

FEA-1100 – a Sustainable & Balanced Option FEA-1100 (HFOØ ODP = 0 1336 mzz) Ø GWP 100 yr ITH = 9. 4 (NOAA) Ø ATM lifetime = 24 days (NOAA) Ø Nonflammable (ASTM E 681 at 60 o. C & 100 o. C) CF 3 CH=CHCF 3 Ø b. p = 33 o. C Ø λ= 10. 7 m. W/m. K @ 25 o. C Ø MW = 164 4

Challenges to Develop Low GWP FEAs 5 Reduce GWP while maintaining other desired properties FEA-1100

6 Foam Expansion Agent Property Comparison

7 HCFC-141 b Phase-out Option Comparisons FEA-1100 – a zero ODP & low GWP FEA with desired properties

Thermal Conductivity and Vapor Pressure Comparisons • Low vapor thermal conductivity over broad temperature range • Lowest thermal conductivity when temperature >150 F Vapor pressure is very close to HCFC-141 b 8

9 FEA-1100 vs Other Zero ODP FEAs FEA-1100 has the best insulation performance

FEA-1100 Impact on FEA Mixtures 10 • Adding FEA-1100 to other zero ODP FEAs • Same foam formulation & equimolar FEAs • FEA-1100 improves R -value

11 FEA-1100 Mixture – Polyester Polyol • Blend FEA-1100 to 50/50 cyclopentane(c-C 5)-isopentane(i. C 5) mixture • Same foam formulation & equi-molar FEAs • FEA-1100 improves performance

12 FEA-1100 vs HCFC-141 b & HFCs Superior insulation performance compared to HCFC 141 b & HFCs

FEA Level & R-value (FEA-1100 vs HFC 245 fa) * High level of HFC-245 fa may cause pressure exceed drum pressure rating • High level of FEA-1100 can be used without vapor pressure or flammability limitation • High level of FEA-1100 can potentially improve insulation performance 13

Chemical Stability – Polyether at 50 o. C for 6 months FEA-1100 is stable in a generic polyether formulation after 6 months storage at 50 o. C 14

Chemical Stability – Polyester at 50 o. C for 6 months FEA-1100 is stable in a generic polyester formulation after 6 months storage at 50 o. C 15

16 Polyol Solubility FEA-1100 is soluble in commonly used polyols

Material Compatibility Metal FEA-1100 is compatible with commonly used metals Changes after 2 weeks at 100 o. C (212 o. F) in FEA-1100 17

Material Compatibility Elastomers FEA-1100 is compatible with commonly used elastomers Changes after 2 weeks at room temperature in FEA-1100 18

19 Material Compatibility - Plastics FEA-1100 is compatible with commonly used plastics Changes after 2 weeks at room temperature in FEA-1100

20 Toxicity Assessment FEA-1100: Favorable Results 4 -hr LC 50: Very Low acute toxicity Skin Irritation: Non - irritating Ames Test: Non - mutagenic Chromosomal Aberration: No genetic material damage Cardiac Sensitization: potential profile Favorable cardiac sensitization 28 -Day Repeat Inhalation: 90 Day/ developmental: result Favorable repeated inhalation profile consistent with 28 -day test

21 Du. Pont Low GWP FEA (Blowing Agent) Program 2009 Screeni ng Candida tes Candidate Evaluation 2010 -2011 2012 -2013 Customer Validation Intermediate Scale Commercial Sales 2014 -2015 Full Scale Commercial Sales Safety & Environment al Properties ODP, GWP, Flammability, Toxicity. . SNAP, PMN, REACH & additional tests as needed Launch FEA-1100 Supply FEA-1100 Desired FEA Properties Insulation performance, Stability, Solubility… Support customer testing & optimization Support customer conversion Manufacturabi lity Bench scale production and optimization Small lot production Intermediate scale commercial plant Full scale commercial plant

22 FEA-1100 Summary • Zero ODP & low GWP • Non-flammable FEA with boiling point close to HCFC-141 b • Superior insulation performance compared to HCFC-141 b, HFCs (245 fa & 365 mfc) & pentanes (cyclopentane & Isopentane) [1] • Good material compatibility and polyol solubility [1] • Good chemical and thermal stability [2] • Heat of evaporation close to HCFC-141 b, HFC- 245 fa & [2] replacement with improved performance • cyclopentane Potential drop-in [1] Proceedings of 12 th International Conference: Blowing agents and foaming processes, Cologne, Germany (2010), page 5 [2] Proceedings of Polyurethans 2010 Technicla Conference 2010, Houston, USA (2010)

23 Disclaimer: The information set forth herein is furnished free of charge and based on technical data that Du. Pont believes to be reliable. It is intended for use by persons having technical skill, at their own risk. Since conditions of use are outside our control, we make no warranties, expressed or implied and assume no liability in connection with any use of this information. Nothing herein is to be taken as a license to operate under, or a recommendation to infringe any patents or patent applications.

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