UNEP MEETING – BANGKOK - April 2015

HFCs Elimination in Foams for Domestic and Commercial Appliances

Challenges and Opportunities

Paulo Altoe’ The Dow Chemical - BrazilDOW CONFIDENTIAL - Do not share without permission 1

UNEP MEETING – BANGKOK 2015

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Lambda & Energy Efficiency

Mechanical performance; Applied density

Flammability: Plant and Machinery Investment $$

Elimination Timeframe: Experiments; Cabinet Redesign; Field Evaluation; $

Processing: Corrosion, Adhesion; Temperature control; Investment $

Foam competitiveness: $

HFOs: Availability; Cost $

Challenges

2

HFOs Blown Foams Versus other blowing agents – Domestic & Commercial Appliances

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HFOs

Lambda & Energy ~ 12% better

versus HC Foams*Similar to better

versus HFCs

* Applied density lower versus HC

and HFCs

*HFC365/227ea *HFC245fa * Solstice ® LBA * Formacel® 1100 *Cp-Isopentane 70/30

30

31

32

33

34

35

36

18.00

18.50

19.00

19.50

20.00

20.50

21.00

21.50

22.00

Mol

ded

Den

sity

, kg/

m3

Lam

bda,

mW

/mK

@ 2

4C

Standard System for Appliances (Mediunm Reactivity) HFC365/227ea and CP-Isopentane as Controls

Molded Density and K Factor

3

Flammable Blowing Agents Comparison – Water Blown as Control

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*Methylal *Methyl Formate *Cp-Isopentane 70/30

#All Water Blown32.00

33.00

34.00

35.00

36.00

37.00

38.00

39.00

40.00

19.00

19.50

20.00

20.50

21.00

21.50

22.00

22.50

23.00

23.50

24.00M

olde

d D

ensi

ty, k

g/m

3Systems Comparison - Flammable Blowing Agents versus Water Blown

Lam

bda,

mW

/mK

@ 2

4C

* Lambda of Methylal and Methyl Formate are similar to water blown

* High applied density

for water blown

* HC has the best compromise of performance

4

HFOs System with High Water Content versus Full Water Blown

HFOs

*Lower molded density versus H2O blown

* Lambda improvement

versus H2O blown

* Cost reduction in combination with high

water content

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Final Remarks • Hydrocarbon Technology , traditionaly used in the market, is a feasible alternative for

HFCs, apart from heavy investment for conversion

• Water Blown or WB combined wtih HFOs can replace HFCs in cases where lambda is not so critical. Balanced levels of HFOs can meet Hydrocarbons performance

• Methylal and Mehtyl Formate are flammable , but with very small concentration they could be used to reduce molded density in water blown systems, in cases where lambda is not so critical. Corrosion must be addressed if Methyl Formate is the option

• HFOs represent a feasible technical alternative to address HFCs replacement with advantages in lambda and molded density

• HFOs are liquid and non flammble, requiring almost no investiment for HFCs conversion

• HFOs represent a heavy penalty in foam costs that can be minimized with lower concentration in the foam composition

• Shelf lije stability for fully formulated polyols contaning HCFO must be improved

• Product availability is still limited for HFOs

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Paulo Altoe’ - Product Technology Manager The Dow Chemical - Brazil paltoe@dow.com

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THANK YOU

7

Backup Slides

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Blowing Agents Properties

Table 1 – Blowing Agent Properties [ Most recent data from literature and suppliers ]

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Blowing Agents (BAs) Evolution

* The evolution of BAs technologies, driven by regulation and market trends moved far from 1st generation BAs (CFCs) * Uses of Gen 1 and 2 is regulated by Montreal protocol (Ozone Depletion Potential , ODP) * HFCs high Global Warming Potential (GWP) substances are currently not regulated. However, market trends indicate that they will probably be regulated in the future. * On top of Hydrocarbons (HC) and water, HFO Gen 4, Hydrofluoroolefins will represent a viable Low GWP alternative to HFCs

Gen1 Gen 2

Gen 3

Gen 4

High ODPHigh GWP

Low ODPHigh GWP

Zero ODPHigh GWP

Zero ODPLow GWP

CFC-11 HCFC-141b HFC 134aHFC 245fa

HFC 365mfcHFC 227ea

HFOs

Hydrocarbons, Methylal, Methyl Formate and Water

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