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
Applications
Desmodur VP PU 0129 M is a blend of 4,4'-, 2,4' and 2,2'-diphenylmethane diisocyanate with a relatively high content of 2,4'-isomer. The product is used to manufacture polyurethanes.
Sampling
Moisture access must be prevented when taking product samples.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| 2,2'-MDI | ≤ 0,80 | % by wt. | MDI-01-06 | |
| Purity | (mol.wt. 250) | ≥ 99,5 | % by wt. | 2011-0248603-94 |
| 2,4'-MDI | 50,00 - 60,00 | % by wt. | MDI-01-06 | |
| NCO content (theoretical) | 33,6 | % by wt. | ||
| 4,4'-MDI | ≥ 39,20 | % by wt. | MDI-01-06 | |
| Phenyl isocyanate content | ≤ 10 | ppm | AM 2014 | |
| Hydrolysable chlorine | ≤ 50 | mg/kg | MDI-01-04 | |
| Viscosity at 25° C | 12 ± 2 | mPa·s | AM 2016 | |
| Density at 40 °C | 1,21 | g/cm3 | DIN 51757 | |
| Solidification range | 12 - 20 | ° C |
Storage
Recommended storage temperature: +20 to +30 °CShelf life (ex works): 6 months if stored in moisture-tight drumsLike all isocyanates, Desmodur VP PU 0129 M is sensitive to moisture and reacts with water to form insoluble urea derivatives and carbon dioxide. The generation of carbon dioxide in sealed containers can lead to a dangerous build-up of pressure. Storage at temperature above 30 °C speeds up the formation of dimers (uretidinedione) which are reducing the shelf life of the product. Storing Desmodur VP. PU 0129 M in a crystallised or partially crystallised state also leads to the relatively rapid formation of dimers and should therefore be avoided. Provided dimerisation is not too far advanced, the crystallised product can still be brought back to a usable state by melting it rapidly but gently at a temperature in the range of 60 to 70 °C. The product should never be heated to a temperature in excess of 70 °C. Once it is melted, the product must be homogenised and cooled down to the recommended storage temperature. Since this treatment creates a higher content of dimers, it is then advisable to use the product as soon as possible. The access of air, particularly if combined with exposure to light over a longer period of time, can result in yellowish to yellow discoloration of the product.
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 .
