Product Information

BAYTHERM 9799 PIR

DescriptionBaytherm 9799 PIR is a low-density rigid poly-isocyanurate foam system consisting of threecomponents: Baytherm 9799, a formulated polyolresin, Mondur 489, a polymeric diphenylmethanediisocyanate (PMDI), and HCFC 141b blowingagent which is added by the customer. Formulatedusing Bayer’s HCFC 141b-blown foam technology,this system can be used in pour-in-place applica-tions where excellent thermal and mechanicalproperties are required, and where a foam whichhas been shown to achieve an ASTM E-84 Class 1burn rating is desired. As with any product, the useof foams made with the Baytherm 9799 PIRsystem in a given application must be tested (includ-ing, but not limited to, field testing) in advance bythe user to determine suitability.

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* These items are provided as general information only. They are approximate values and are not part of the production specifications.

Typical Properties of Components*

Property Mondur 489 Baytherm Isocyanate 9799 Resin

Appearance Brown Liquid Amber Liquid

NCO, Wt. % 30.6 —

Acidity, Wt. % 0.02 —

Viscosity at 25°C, mPa• s 700 1,800

Specific Gravity at 25°C 1.24 1.16

Flash Point, PMCC, °C 213 > 93.9

Rigid Polyisocyanurate Foam System

Typical Processing Conditions*

Property ValueMixing Ratio, Iso/Resin/HCFC 141b 108/77/23

Hand Mix Reactivity at 25°C (77°F):

Cream Time (sec) 20

Gel Time (sec) 90

Free-rise Density (lb/ft³) 1.65

System Component StorageMondur 489 – Mondur 489 Isocyanate must bestored in tightly closed containers and protected fromcontamination with moisture and foreign materials.It will react slowly with water to form polyureas andliberate CO

2 gas, which can cause sealed containers

to expand and rupture. Storage temperatures shouldbe maintained between 18°C and 30°C (64°F and86°F).

Baytherm 9799 – Baytherm 9799 Resin is hygro-scopic and may absorb water. Containers should bekept tightly closed and protected from heat, moistureand foreign materials, which can adversely affectprocessing. Open containers slowly to relievepossible excess pressure. Avoid contact with skinand eyes as well as breathing vapors if generated.Storage temperature should be maintained below50°C (122°F).

Health and Safety InformationAppropriate literature has been assembled whichprovides information concerning the health andsafety precautions that must be observed whenhandling Baytherm 9799 PIR system components.Before working with this product, you must read andbecome familiar with the available information on itshazards, proper use and handling. This cannot beoveremphasized. Information is available in severalforms, e.g., material safety data sheets (MSDS) andproduct labels. Consult your Bayer MaterialSciencerepresentative or the Health, Safety, Environmentand Quality (HSEQ) Department in Pittsburgh, PA.

Note: The information contained in this bulletin is current as of January 2010. Please contact BayerMaterialScience to determine whether this publication has been revised.

Bayer MaterialScience LLC

100 Bayer Road • Pittsburgh, PA 15205-9741 • Phone: 1-800-662-2927 • www.BayerMaterialScienceNAFTA.com

The manner in which you use and the purpose to which you put and utilize our products, technical assistance and information (whether verbal, written or byway of production evaluations), including any suggested formulations and recommendations are beyond our control. Therefore, it is imperative that you testour products, technical assistance and information to determine to your own satisfaction whether they are suitable for your intended uses and applications.This application-specific analysis must at least include testing to determine suitability from a technical as well as health, safety, and environmentalstandpoint. Such testing has not necessarily been done by us. Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms ofour standard conditions of sale. All information and technical assistance is given without warranty or guarantee and is subject to change without notice. It isexpressly understood and agreed that you assume and hereby expressly release us from all liability, in tort, contract or otherwise, incurred in connection withthe use of our products, technical assistance, and information. Any statement or recommendation not contained herein is unauthorized and shall not bind us.Nothing herein shall be construed as a recommendation to use any product in conflict with patents covering any material or its use. No license is implied orin fact granted under the claims of any patent.

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Typical Physical Properties of Foam made with Baytherm 9799 PIR System*

Property Test Method Units PanelMolded Density ASTM D-1622 lb/ft³ 2.25

Core Density ASTM D-1622 lb/ft³ 1.95

Thermal Conductivity @75°F, Initial ASTM C-518 BTU-in/h-ft²-°F 0.139

Compressive Strength (parallel), @10% ASTM D-1621 lb/in² 23

Compressive Strength (perpendicular), @10% ASTM D-1621 lb/in² 16

Shear Strength ASTM C-273 lb/in² 26

Tensile Strength ASTM D-1623 lb/in² 22

Dimensional Stability, Volume Change: ASTM D-2126

After 28 days at –20°C % 0.3

After 28 days at + 200°C % 1.8

After 1 day at +158°F/100% RH % 7.3

Tunnel Test (Factory Mutual) ASTM E-84

Flame Spread 20

Smoke Density 355

* These items are provided as general information only. They are approximate values and are not part of the production specifications.

Foams made with Baytherm 9799 PIR system have been tested and found to meet the requirements of aClass 1 Foam according to ASTM Method E-84.