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
Bayflex WR 7149 is a moldable polyurethane elastomer system.
Applications
Bayflex WR 7149 aromatic PUR RIM system is designed for glass encapsulation applications and can be a suitable replacement for aliphatic PUR materials. It is processed on high pressure reaction injection molding (RIM) equipment and produces an elastomer with a hardness of 55 – 60 Shore D. This system combines rapid demold time, excellent green strength and outstanding physical properties. As with any product, Bayflex WR 7149 system must be evaluated and tested (included but not limited to field testing) in advance by the user to determine suitability for use in a given application.
Storage
Avoid moisture contamination during storage, handling and processing. For both components, pad containers with dry nitrogen or air (desiccant cartridge or air dryer at -40°C dew point). Polyol component will phase separate. Mix polyol component to a homogenous state before use and before removing any material from container, but avoid air entrainment. Maintain adequate mixing of the polyol component during use. Recommended storage temperature for the polyol component is 10 – 30°C. Recommended storage temperature for the isocyanate component is 10 – 30°C. Do not store isocyanate component at lower temperatures – material becomes viscous; freezing may occur.
Storage time
Storage period of both components is 9 months after the date of manufacture when stored in sealed original containers under recommended storage conditions.
Processing
Substrates must be clean and dry, and free of surface contaminants; especially surface oils and release agents. The need for primer must be determined in advance by the user.
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 .
