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Baymer VP.PU 28HB88 N
General Properties and Applications
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Baymer VP.PU 28HB88 N is a polyol formulation for the continuous
production of metal-faced sandwich panels having a core of rigid
polyurethane foam (PUR).
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Baymer VP.PU 28HB88 N contains all the additives and auxiliaries needed
to produce metal-faced sandwich panels except for the blowing agent and
activator.
Panels of 30 to 200 mm can be produced with densities between 38 and 42
kg/m³.
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When correctly processed, rigid polyurethane foams based on Baymer
VP.PU 28HB88 N can achieve a B3 flammability rating to DIN 4102 .
Provisional Specification
Property
Value
Unit of
measurement
Hydroxyl number
355 ± 20
mg KOH/g
PET-11-01
Water content
1,90 ± 0,15
%
PET-19-01
Viscosity 25°C
780 ± 100
mPas
PET-10-01
Value
Unit of
measurement
Density 25 °C
approx. 1,06
g/ml
pH-Wert
approx. 9,8
Other Data*
Property
Method
Method
PET-07-01
PET-13-01
* These values provide general information and are not part of the product specification
page 1 of 3
Edition 2007-10-18
BAYMER
®
Provisional Product Datasheet
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Baymer VP.PU 28HB88 N
Packaging
Drums, tank wagons, tank containers or IBCs on request.
Storage
If stored at a temperature of around 20 °C and protected against moisture, the
product will remain stable for 6 months after delivery.
Labeling
This product data sheet is only valid in combination with the corresponding
current safety data sheet! Any updating of safety relevant information – in
accordance with EU directives – will only be reflected in the Safety Data Sheet,
copies of which will be revised and distributed. For further technical information
relating to safety, the Safety Data Sheet should be consulted.
Directions for Processing
Guide formulation for processing on high-pressure machines :
Board thickness
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Baymer VP.PU 28HB88 N
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Desmorapid 1792
Dimetylcyclohexylamin
n-Pentan
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Desmodur 44V40L
[mm]
40
200
[pbw]
100
100
[pbw]
1,9
0,7
[pbw]
[pbw]
[pbw]
3,0
6,0
140
1,7
4,0
130
The following must be considered when handling pentane:
(applies to all isomers of pentane)
Pentane is extremely flammable and can form explosive mixtures with air. It
is heavier than air and can accumulate
on the ground or in shafts.
Please avoid therefore the formation of explosive pentane-air mixtures and
keep ignition sources (e.g. including
causes of electrostatic charging) well away.
Please note:
- the safety data sheet of the pentane supplier
- the instructions of the device manufacturer (e.g. regarding earthing and
explosion protection)
- the requirements in the plant permit issued by the local authorities.
other remarks
The use of other isocyanates and activators is not advisable. If customized
formulations are required, however, our technical support staff can offer
additional advice.
The temperature of the raw material components should be approx. 20 °C.
The laminating tunnel must be preheated to approx. 35-40 °C, and the sheet
metal facings should be at a temperature of approx. 30-35 °C.
page 2 of 3
Edition 2007-10-18
BAYMER
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Provisional Product Datasheet
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Baymer VP.PU 28HB88 N
The following information and our technical advice – whether verbal, in writing or by way of trials – are given in good faith but without warranty, and
this also applies where proprietary rights of third parties are involved. Insofar as Bayer MaterialScience AG is not responsible for damages caused
intentionally or through gross negligence, we shall not be liable for consequential damages or purely financial losses. The above limitation shall not
apply to damage resulting from death, injury or damage to health. None of the above shall affect any statutory liability rights. Our advice does not
release you from the obligation to check its validity and to test our products as to their suitability for the intended processes and uses. The application,
use and processing of our products and the products manufactured by you on the basis of our technical advice are beyond our control and, therefore,
entirely your own responsibility. Our products are sold in accordance with the current version of our General Conditions of Sale and Delivery.
Editor: Business Unit Polyurethanes
Bayer MaterialScience AG,
D-51368 Leverkusen, Germany
www.bayermaterialscience.com
page 3 of 3
Edition 2007-10-18
Contact :
Roers, Rolf Dr.
Tel. +49 214 / 30-31486
BAYMER
®
Provisional Product Datasheet