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
Aliphatic high-molecular-weight polyester polyurethane.Desmomelt® U 410 M is a fine powder for the production of non-yellowing, thermally activatable hot melt adhesives. Desmomelt® U 410 M is particularly well suited for applications with low thermal activation temperatures, such as in automotive, textile, footwear, packaging and furniture applications. With Desmomelt® U 410 M, fast and environmentally friendly lamination processes can be realized, e.g. by direct application of the powder. Desmomelt® U 410 M has very good adhesion to textile substrates and to a variety of other materials such as soft PVC, rubber, wood, polyurethane elastomers.
Applications
Features / Application Desmomelt® U 410 M has excellent bonding properties on most synthetic and natural materials. Desmomelt® U 410 M can be mixed with other Desmomelt® U-types to adapt the properties to specific requirements. The heat resistance, hydrolysis resistance as well as resistance to plasticizers, fats and oils can be increased by the addition of a solid powdered polyisocyanate, e.g. Desmodur® Z 2589. Pay attention to the pot life of the mixture.A formulation may be required to adapt to application-specific and technical characteristics. For heat-activated adhesive applications with Desmomelt® U 410 M, an adhesive bon line temperature in the range of > 55 °C is recommended, so that the applied adhesive layer is fully activated. The actual temperature required for a particular application depends on the formulation, the time spent in the press, the pressure applied, and the substrates to be bonded.As with any product, the use of Desmomelt® U 410 M in a given application must be pre-tested by the user (including but not limited to field trials) to determine suitability.
Form supplied
Fine powder
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Viscosity at 23 °C,spindle L 2 / 30 rpm | of a 15% solution in 2-butanone (MEK) / water (16:1) | approx. 35 | mPa∙s | DIN EN ISO 2555 |
| Sieved over | 500 | µm |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Density | approx. 1,2 | g/cm3 | ISO 1183 | |
| Minimum activation temperature | 50 - 60 | °C | DIN EN 12961 | |
| Hot-tack-life (Depends on application conditions) | 1 - 3 | min | ||
| Heat resistance | approx. 50 | °C |
Storage
Recommended storage temperatures: Temperatures above 30 °C should be avoided. Temperatures above 45 °C lead to caking / agglomerations. Protect from direct sunlight, heat, moisture and foreign material.
Storage time
Covestro represents that, for a period of six months following the day of shipment as stated in the respective transport documents, the product will meet the specifications or values set forth in section "specifications or characteristic data" above, what ever is applicable, provided that the product is stored in full compliance with the storage conditions set forth in and referenced under section "storage" above and is otherwise handled appropriately.The lapse of the six months period does not necessarily mean that the product no longer meets specifications or the set values. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications or the set values. Covestro does not make any representation regarding the product after the lapse of the six months period and Covestro shall not be responsible or liable in any way for the product failing to meet specifications or the set values after the lapse of the six months period.
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.
Trial or development Product
This is a trial product. Further information, including amended or supplementary data on hazards associated with its use, may be compiled in the future. For this reason no assurances are given as to type conformity, processability, long-term performance characteristics or other production or application parameters. Therefore, the purchaser/user uses the product entirely at his own risk without having been given any warranty or guarantee and agrees that the supplier shall not be liable for any damage, of whatever nature, arising out of such use. Commercialisation and continued supply of this material are not assured. Its supply may be discontinued at any time.
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 .
