Before working with this product, you must read and become familiar with the available information regarding its risks, proper use, and safe handling. This information is provided in various formats, including the current Safety Data Sheet (SDS) and product label. SDS can be accessed via the following link:
Safety Data Sheets (SDS) for Covestro products | Covestro
For further questions, please use the contact information provided on this technical data sheet.
Product description
Desmophen® VP.PU 60WB01 FL. is a partially branched polyester polyol based on adipic acid and diethylene glycol.
Applications
Desmophen® 60WB01 FL is a partly branched polyester polyol based on adipic acid, diethylene glycol and trimethylol propane. It is particularly suitable for the production of flexible polyester polyurethane foams with reduced fogging tendency.
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 | 57 - 63 | mg KOH/g | DIN 53240-2 | |
| Density 20 °C | 1,19 | g/cm3 | DIN 51757 | |
| Viscosity 25 °C | 17,400 - 21,600 | mPa*s | DIN ISO 3219 | |
| Acidity | 0,6 - 1,4 | mg KOH/g | DIN ISO 2114 | |
| TDI basic value | 9,3 | pbw Desmodur® T on 100 pbw Desmophen® VP.PU 60WB01 | ||
| Water content | ≤ 0,05 | % by wt. | DIN 51777-1 | |
| Colour value (Hazen) | ≤ 150 | DIN EN 1557 |
Storage
Recommended storage temperature (°C): 20 - 35Shelf life (ex works) 12 months if stored in sealed, moisture-tight containersPartially used containers should be tightly resealed due to the hygroscopic nature of the product.Recommended temperature for processing (°C): 20 - 25.
Processing
The product can be transferred to storage tanks by means of pumps (gear pumps or special screw pumps) or by compressed air. Use of the latter method is only effective at low viscosity, i.e. if the Desmophen® has been heated. Obviously, the maximum permissible pressure for the delivery tanks must never be exceeded. Kegs and drums are best emptied into a trough of some kind and then pumped from there into the tanks. This will prevent air from getting into the product.Desmophen® should always be conditioned by bringing it to the processing temperature before use. It is also important to make sure that no dissolved air is present in the material. Too much undissolved air can also cause problems during production, and for this reason the material should be stored and conveyed to the metering pumps under normal atmospheric pressure. If pressure has to be applied for technical reasons (e.g. because too little Desmophen® is reaching the low-pressure side), it should be kept as low as possible and only activated during actual production. If the Desmophen® is at too high a temperature, it is best left to stand in the storage tank until it has cooled down to the processing temperature. In our experience, it takes roughly one week for about 20 tons of Desmophen® in a metal tank to cool down from approx. 80 °C to approx. 25 °C. If this is too slow, the cooling process can be speeded up by recirculating the material and possibly using a heat exchanger. It is nevertheless advisable to stop recirculating the material when the temperature has fallen to about 30 °C, and then to let it stand until it has cooled down to the final processing temperature. It is important to make sure that as little air as possible gets into the material during recirculation, because as the polyester cools down and becomes more viscous, any air bubbles will diffuse out more and more slowly and cause problems during processing.Desmophen® which is at too low a temperature must be heated up before processing. The same basic principles apply here as to Desmophen® which is too hot (see preceding paragraph). Again, stirring should be avoided so as to prevent air from getting into the product. Desmophen® supplied in kegs or drums is best heated to about 60 to 80 °C in the original containers and then poured into the machine tank. Practical experience shows the ideal processing temperature (measured in the storage or machine tank) to be between 20 and 26 °C, depending on local conditions. Variations in temperature should be kept to a minimum, however, so as to ensure trouble-free production and prevent frequent adjustments to the formulation.Ideally, the maximum tolerance should be ± 2 °C.Further directions for processing are given in the recommended formulations.
Health and Safety Information
Disclaimer
Responsibility and Liability
The use of Covestro products, technical assistance, and information (regardless of how provided) is outside Covestro’s control and is solely the responsibility of the customer. The customer must conduct adequate testing to determine the suitability of products for its intended use, including but not limited to technical, health, safety, and environmental aspects. Unless otherwise agreed in writing, all products are sold exclusively under Covestro’s standard conditions of sale, which prevail in case of conflict and are available upon request.
The terms and conditions of sale and delivery are available via the following link:
https://order.covestro.com/covestrostorefront/saleConditions
All information is provided “as is” without warranties, express or implied, including merchantability or fitness for a particular purpose, and is subject to change without notice. To the maximum extent permitted by law, Covestro disclaims, and the customer assumes all liability for losses, damages, or claims arising out of use of Covestro products, technical assistance, or information. Any statement or recommendation not expressly contained in Covestro documentation is unauthorized and shall not bind Covestro. Nothing herein shall be construed as encouraging or recommending the use of any product in conflict with any claim of any patent. No license is implied or in fact granted under the claims of any patent.
Restrictions on Regulated Applications
This product is not intended for use in regulated applications such as agriculture, cosmetics, drinking water contact, food contact, medical products (e.g., medical devices), toys, or similar uses subject to specific regulatory requirements. Prior written approval from Covestro is required before this product may be used in any regulated application. The customer is solely responsible for ensuring compliance with all applicable laws and determining product suitability. Covestro disclaims all liability and warranties for unauthorized regulated uses.
Typical Value
The values provided are typical only and do not represent binding specifications. Unless expressly confirmed in a written contract, these values are not part of the contractual quality agreement and must not be relied upon as a warranty or guarantee of product performance.
Sample
Samples provided by Covestro are intended solely for evaluation and testing purposes by the customer and may not be used in commercial applications, resold, transferred to third parties (except qualified testing service providers acting on behalf of the customer), reverse engineered, modified, or used in any manner not explicitly authorized in writing by Covestro. Samples are provided ‘as-is’ without any warranties, express or implied, including fitness for a particular purpose. Customers are solely responsible for ensuring safe handling, regulatory compliance, and suitability of the material for their intended evaluations. Covestro disclaims all liability for damages or losses arising from the use of samples.
Contact Information
Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .
