*Trademark of The Dow Chemical Company

Dow Automotive and Dow Systems House are a business groups of The Dow Chemical Company and its subsidiaries.

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## Technical Data Sheet


# SPECFLEX* NM 858 Polyol 

# PAPI* PB 219 Isocyanate 

## Formulated Polyurethane Foam System

Description SPECFLEX NM 858 is a fully formulated polyol used primarily for closed pour instrument panel applications. NM 858 may be used in combination with PAPI PB 219 isocyanate to allow for the production of instrument panels and interior trim par ts having an applied foam density range of 120 - 140 kg/m3.

This semi-rigid foam system has excellent processabi lity for a variety of automotive IPIT applications that require good adhesion, fast cure, low VOC, very low fogging, good compatibility with PVC skins, and good flowability in large intricate / complicated molds.

Typical demold times range from 60 to 80 seconds.



### Typical Component Properties

Unit SPECFLEX * NM 858 Polyol PAPI* PB 219 Isocyanate Method

OH number MgKOH/g 51 - 57 ASTMD 4274

Water Content % 2.6 – 2.8 ASTM E 203-92a Color Dark Grey Brown Viscosity @ 25°C cPs Yet to be measured Yet to be measured ASTM D 4878/ *D 4889

NCO Content % Yet to be measured ASTM D 5155 Specific Gravity 1.03 1.22 ASTM D 891

1 

### Recommended

Process
Conditions Please consult the Material Safety Data Sheets for detailed information on product safety handling and emergency procedures

Units Values

Poly : Iso Ratio (103-107 Index) 1.86 – 1.93 Machine Throughput g/s Depends on equipment & customer needs; commercially utilized at 200 – 500 g/s Components Temperature at Head °C 29 – 35 for 721-13 poly; 27 – 32 for PB 219 iso Mold Temperature °C 38 - 49 Demolding Time s 60 - 80

De-Gas Time s 5 – 20 s after end of Rise Time

1 Values are only recommendations. Customers have utilized this foam outside of these conditi ons without negative effect. Process setups are dependant on customer r equirements, part design, mold seal-off c ondition, carrier functionality, equipment
limitations, etc.



### Typical Reaction
Characteristics Hand mix data referred to laboratory tests made with components temperature at 25 °C, hand-mixed with mechanical stirrer at 2500 rpm. High pressure values will vary depending on processing conditions.

Unit Hand mix High presure machine Method

Cream Time s 5 Dow internal method

Gel Time s 37 Dow internal method

Rise Time s 41 Dow internal method Free Rise Density Kg/m 3 48 Dow internal method*Trademark of The Dow Chemical Company

Dow Automotive and Dow Systems House are a business groups of The Dow Chemical Company and its subsidiaries.

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### Viscosity Profiles

Viscosity has not been measured yet

2 

### Polymer Properties Physical property values vary with the core density of the test pad. The tensile, tear, and elongation values reported below are the average of those proper ties at the molded density also reported below. The compression set and compression force deflection tests were performed on larger pads with core densities in the range of 70 to 100 kg/m 3 

### . All physical properties will be different at the applied density but can be correlated to these results based on the density difference.

2 

### Results are from study # 56115 performed at Dow Chemical Midland, MI USA Automotive Flexible Foams Lab in February 2009.

* 

### Heat age conditions were 400 hours at 90 C dry heat. Data provided as general information only.

Units Value Standard
Deviation Method

Molded Density (for property tests) Kg/m3 139 6.0 ASTM D3574 A Tensile Strength kPa 542 36 ASTM D3574 E Tensile Strength (heat aged) * kPa 442 ASTM D3574 K Elongation at break % 107 5.9 ASTM D3574 E Tear Strength N/m 527 56 ASTM D3574 F CD Compression Set 50% % Yet to measure ASTM D3574 D CD Compression Set 50% (humid aged) % Yet to measure ASTM D3574 D, J2

Compression Force Deflection 50% (humid aged) %change Yet to measure ASTM D3574 C, J2



### Flammability Numerical flame spread or fire classification are not intended to reflect hazards presented by this or any other material under actual fire conditions

Standard Typical Values (3)

FMVSS - 302 Not yet measured

3 Numerical flame spread or fire cla ssification are only indicative, they are not sales specifications



### Handling and Storage Drums of PB 219 MDI must be protected from mo isture contamination. Exothermic generation of CO2 may cause dangerous pressure build-up if c ontamination occurs. Opened containers should be filled with -40 C dew point inert gas before closi ng (nitrogen or air may be used). During drum unloading, the 3/4" vent may be equipped with a dry i nert gas breather (maximum of 1 psig pressure) or a moisture free, calcium chloride-filled dr yer tube placed in the ai r bleed opening. Shipping and storage temperatures for this product are 75° to 105°F (24° to 41°C). If shipping or storage temperature should fall below 65°F (18°C), some cr ystallization could result. Unless proper action is taken to re-form the original solution, subsequent dimerization will proceed quickly and will deteriorate the assay of the product. Unit SPECFLEX* NM 858 Polyol PAPI* PB 219 Isocyanate Storage temperature °C 15 - 40 24 - 41

4 Shelf life / Storage stability Months 6 6

4 Stored in the original sealed drums in a dry place at the recommended temperature*Trademark of The Dow Chemical Company

Dow Automotive and Dow Systems House are a business groups of The Dow Chemical Company and its subsidiaries.

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### Safety
Considerations Material Safety Data Sheets (MSDS) are available from the Dow Chemical Company. MSDS is provided to help customers satisfy their own handli ng, safety and disposal needs, and those that may be required by locally applicable health and safety regulations. SDS sheets are updated regularly. Therefore, please request and review the most cu rrent SDS before handling or using any product. Copies of the SDS are available on reques t through your nearest Dow Sales office.

NM 858 Polyol - Formulated polyols generally present no significant hazard in use when simple precautions are followed. However, before working with these systems, it is necessary to understand the hazards involved in handling all of the components and to establish and follow safe work procedures.

PB 219 Isocyanate - Blended MDI products are potentially hazardous materials and require care in handling. All persons who work with these materials must know and follow proper safe handling procedures.



### Customer Notice Dow encourages its customers to review their applic ations of Dow products from the standpoint of human health and environmental quality. To help ens ure that Dow products are not used in ways for which they were not intended or tested, Dow personnel are willing to assist in dealing with ecological and products safety consideration. Your Dow representative can arrange the proper contacts.

Contact information : For more information about PU Systems products, call The Dow Chemical Company : http://www.dow.com/ pusystems/index.htm NOTICE: The information and data cont ained herein do not constitute sales specifications. The product properties ma y be changed without notice. No liability, warranty or guarantee of product performance is created by this document. It is the Buyer’s responsibility to determine whether Dow products are appropriate for Buyer’s use and to ensure that Buyer’s workplace and disposal practices are in compliance with applicable laws and regulations. No freedom from any patents or other industrial or intellectual property rights is granted or to be inferred. Quality Management System certified by DQS against DIN EN ISO 9001

Reg. No. 055759 QM