Recommended storage temperature: 10 - 35 °C
Desmophen® 80WB18 must be stored in sealed, moisture-tight containers. Partially used containers should be tightly resealed due to the hygroscopic nature of the product.
Product description
Desmophen® 80WB18 is a high-functional active long-chain polyether polyol.
Applications
Desmophen® 80WB18 is designed for the production of high-resilience slabstock foams, for instance it can be used for BayComfort® slabstock foams.
Form supplied
Desmophen® 80WB18 is a colorless to pale liquid.
Sampling
Moisture access must be prevented when taking product samples.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Water content | ≤ 0.10 | % | PET-19-01 | |
| Hydroxyl number | 26.5 - 30.5 | mg KOH/g | PET-11-01 | |
| Dynamic viscosity | 25 °C | 1,500 - 1,760 | mPa·s | PET-10-01 |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Density | 20 °C | 1.03 | g/cm³ | DIN 51757 |
Storage
Storage time
Covestro certifies that the product meets specifications for 12 months from the date of shipment, provided it is stored and handled in accordance with the conditions specified in the ‘Storage’ section. After this period, product performance is not assured; Customers are responsible for retesting material before use. Covestro assumes no liability for product performance after 12 months.
Processing
When manufacturing HR foams, it is essential to inject air into the mixing chamber in order to obtain an irregular cell structure. This structure improves the permeability of the foam, reduces any tendency to shrinkage and gives a largely linear compression hardness curve. The amount of air metered in must be determined experimentally in accordance with the prevailing conditions.On the other hand, excessive air in the raw materials (caused for example by inappropriate recirculation) will lead to problems, e. g. defects at the base of the foam block, coarse cell structure or local voids caused by foam collapse etc.HR foams differ in certain respects from conventional polyether slabstock foams. For example, it is not possible to determine gel time. HR foams also adhere strongly to soda kraft paper. Siliconised or PE-coated paper is easier to remove. Since HR foams do not have a completely open-cell structure after production, they need to be crushed to destroy the cell membranes and to obtain an optimum open-cell structure, permeability and elasticity. This must be done before measuring their mechanical properties. The temperature of the raw materials should be kept constant during processing to ensure largely reproducible results.Special attention is required concerning the handling of HR silicones.Normally HR silicones are insoluble in water and should be kept separately from the standard silicones by all means.Minor concentrations of standard silicones lead to non-reversible shrinkage of HR foams.
Health and Safety Information
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.
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 .
