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Desmodur® VP.PU 60RE70

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Product Types

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Material

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General Characterization

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Storage Conditions

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Sampling

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Packaging Type

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Technical Properties & Datasheets

Product description

Applications

DESMODUR VP.PU 60RE70 is a mixture of 4,4'-, 2,4'- and 2,2'-diphenylmethane diisocyanat with a relatively high content of 2,4'-isomers.It can be used in conjunction with polyols for the production of polyurethane products.

Sampling

Exposure to moisture must be prevented when taking product samples.

Specification

Property Test Condition Value Unit Standard
NCO-content 32,9 - 33,3 % by wt. MDI-01-01
Viscosity at 25 °C 8 - 15 mPa*s MDI-01-02
2,4'-MDI content 28,0 - 32,0 % by wt. MDI-01-06

Storage

Storage in original sealed Covestro containers.Recommended storage temperature: 20 – 35 °CProtect from moisture, heat and foreign material.Covestro represents that, for a period of 6 months following the day of shipment as stated in the respective delivery documents, the product will meet the values set forth in section "specification" above provided that the product is stored in full compliance with the storage conditions and is otherwise handled appropriately.The lapse of this period does not necessarily mean that the product no longer meets specifications. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications. Covestro does not make any representation regarding the product after the period and Covestro shall not be responsible or liable in any way for the product failing to meet specifications after the period.Storage for long periods at temperatures below 20 °C or above 35 °C leads to a deterioration in quality. At temperatures below 20 °C starts crystallisation, encouraging the formation of infusible dimers. This makes it impossible to completely melt the product, even if it has been stored for only 3 weeks. Storage at temperatures above 35 °C also accelerates the formation of insoluble sediment (dimers). Freshly crystallised DESMODUR VP.PU 60RE70 must be remelted. In doing so, it is important to ensure that the entire contents of the drum are melted and homogenised. The product should then be kept sealed at the recommended storage temperature.

Processing

Drums including empty ones should always be kept tightly sealed. The product should never be allowed to come into contact with water, which reacts with DESMODUR VP.PU 60RE70 to form polyureas and carbon dioxide. Contact with water in any form (damp drums, solvents containing water, moist air) must be prevented not only during storage, but also when removing material from drums and during processing. Failure to do so may lead to a dangerous build up of pressure in tanks and drums due to the generation of carbon dioxide. In addition, polyureas forming in DESMODUR VP.PU 60RE70 can cause solids to separate out, leading to blockages in the filters, pumps and pipelines of the processing equipment and resulting in production problems.WarningIf the recommended storage temperature is exceeded for a long period (especially if the temperature of the product rises to above 50 °C), or if the recommended shelf life is exceeded, or if the product comes in contact with water or bases such as amines, alkalis or metal compounds, a chemical reaction may take place.In addition to a reduction in the NCO content and an increase in viscosity, carbon dioxide in particular may be generated. The resultant increase in pressure may cause the containers to swell or burst. Consequently, if the product is mixed with other components or processed into a prepolymer, it is advisable to check the shelf life of the mixture or prepolymer.

Health and Safety Information

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.

The Product Safety First Program | Covestro

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 .

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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