Before working with this product, you must read and become familiar with the available information on its risks, proper use, and handling. Information is available in several forms, e.g., in particular in the currently valid safety data sheets and product labels. For further information contact your Covestro representative.
Product description
Additive VP.PU 49WB81 is a polyether-containing additive.
Applications
Additive VP.PU 49WB81 is used for adjusting the slow-recovery behavior of viscoelastic foam grades. When compared to Additive VP.PU 49WB80, Additive VP.PU 49WB81 allows for the production of foams with higher air permeability.
Sampling
Moisture access must be prevented when taking product samples.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Appearance | Colourless to pale liquid | PET-03-04 | ||
| Hydroxyl number | 390 - 430 | mg KOH/g | PET-11-01 | |
| Density 25 °C | 1,02 | g/cm3 | DIN 51757 | |
| Water content | ≤ 0,15 | % by wt. | PET-19-01 | |
| TDI basic value | 63,6 | pbw Desmodur® T on 100 pbw Additive VP.PU 49WB81 | ||
| Viscosity 25 °C | 45 - 75 | mPa*s | PET-10-01 |
Storage
Recommended storage temperature (°C): 10 - 35.Partially used containers should be tightly resealed due to the hygroscopic nature of the product.Covestro represents that, for a period of 6 months following the day ofshipment as stated in the respective delivery documents, the product will meetthe values set forth in section "specification" above provided that the product isstored in full compliance with the storage conditions and is otherwise handledappropriately. The lapse of this period does not necessarily mean that theproduct nolonger meets specifications. However, prior to using said product, Covestrorecommends to test such a product if it still meets the specifications. Covestrodoes not make any representation regarding the product after the period andCovestro shall not be responsible or liable in any way for the product failing tomeet specifications after the period.
Processing
Additive VP.PU 49WB81 is used for modifying the slow-recovery properties of viscoelastic foam qualities based on e. g. Desmophen® VP.PU 24WB03.Depending on the formulation the recommended amount ranges from 2 - 8 p.b.w. The hydroxyl value has to be taken into consideration.Normally Additive VP.PU 49WB81 should be metered separately by suitable pumps (ceramic pumps or externally lubricated pumps).Otherwise the product should be fed in together with the activator.Recommended temperature for processing (°C): 20 - 25.
Health and Safety Information
Disclaimer
General
The manner in which you use our products, technical assistance and information (whether verbal, written or by way of production evaluations), including any suggested formulations and recommendations, are beyond our control. Therefore, it is imperative that you test our products to determine suitability for your processing and intended uses. Your analysis must at least include testing to determine suitability from a technical, health, safety, and environmental and regulatory standpoint. Such testing has not necessarily been done by Covestro, and Covestro has not obtained any approvals or licenses for a particular use or application of the product.
Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale which are available upon request.
All information and including technical assistance is given without warranty or guarantee and is subject to change without notice. It is expressly understood and agreed by you that you assume and hereby expressly release indemnify us and hold us harmless from all liability, in tort, contract or otherwise, incurred in connection with the 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 any claim of any patent relative to any material or its use. No license is implied or in fact granted under the claims of any patent.
Non Medical and non Food Contact
This product is not designated for the manufacture of a medical device or of intermediate products for medical devices (1). This product is also not designated for other specifically regulated applications (e.g. including cosmetics, plant protection, fertilisers, plant strengtheners, food processing, food contact and others). If the intended use of the product is for the manufacture of a medical device or of intermediate products for medical devices or for other specifically regulated applications Covestro must be contacted in advance to provide its agreement to sell such product for such purpose. Nonetheless, any determination as to whether a product is appropriate for use in a medical device or intermediate products for medical devices, for Food Contact products or cosmetic applications must be made solely by the purchaser of the product without relying upon any representations by Covestro.
1) Please see the Guidance on Use of Covestro Products in a Medical Application document.
Sample
Any samples provided by Covestro are for testing purposes only and not for commercial use.
Typical value
These values are typical values only. Unless explicitly agreed in written form, they do not constitute a binding material specification or warranted values
Contact
Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .
