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
Blocked aromatic polyisocyanate based on TDI.In combination with cycloaliphatic diamines such as Laromin® C 260 (BASF) to formulate highly flexible, one-component stoving coatings.
Applications
Desmodur® BL 1100/1 is combined with Laromin® C 260 to formulate stoving coatings, including those for application by dipping and curtain coating, and adhesive cements. Combinations of Desmodur® BL 1100/1 and Laromin® C 260 with plasticisers can also be used as high-build coatings. Optimum film properties are produced by combining Desmodur® BL 1100/1 and Laromin® C 260 in the ratio 100 : 10 (by wt.). The mixing ratio was determined empirically. The films are rubber-like and have good mechanical properties.Stoving conditions: Longer stoving times at 180 °C and stoving temperatures above 190 °C will decrease the mechanical strength of the films.A special application is in stone-chip primer surfacers for the automotive industry. The film hardness and low-temperature crack resistance of Desmodur® BL 1100/1 / Laromin® C 260 combinations can be increased by the addition of Desmodur® BL 1265/1 MPA/X. The amount of Laromin® C 260 required to yield optimum film properties when combined with Desmodur® BL 1265/1 MPA/X has been determined empirically: Combinations of Desmodur® BL 1100/1 and Desmodur® BL 1265/1 MPA/X are cloudy and do not always have unlimited compatibility. Nevertheless, after stoving for 30 min at 160 °C, virtually clear films are obtained. Clear and pigmented one-component systems can be formulated using Desmodur® BL 1100/1 and Laromin® C 260. These are stable at room temperature and at 40 °C. When formulating pigmented systems using standard equipment, care should be taken that the temperature does not exceed 70 °C. Storage stability is limited at temperatures above 80 °C, even if exposure is brief.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Color value (Hazen) | ≤ 150 | DIN EN 1557 | ||
| Viscosity at 23 °C | 43,000 ± 10,000 | mPa*s | DIN EN ISO 3219/A.3 | |
| Free NCO content | < 0,2 | % | DIN EN ISO 11 909 mod. |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Flash point | > 150 | °C | DIN EN 22 719 | |
| Density at 20 °C | approx. 1,07 | g/ml | DIN EN ISO 2811 | |
| NCO content, blocked | approx. 3,0 | % | ||
| Equivalent weight | approx. 1400 |
Solubility / thinnability
Generally speaking, Desmodur® BL 1100/1 has good compatibility with the solvents listed. However, the solutions formed must be tested for their storage stability. Desmodur® BL 1100/1 is readily soluble in ethers, alcohols, esters and aromatic hydrocarbons. It has limited solubility in aliphatic hydrocarbons. Only PU grade solvents should be used (< 0.05 % water). The solvent should not contain reactive groups such as hydroxyl or amino groups.
Compatibility
Generally speaking, Desmodur® BL 1100/1 is miscible with various plasticisers such as Unimoll® BB, Adimoll® DO and Disflamoll® TOF. The combinations should always be tested for their compatibility.
Storage
- Storage in original sealed Covestro container. - Recommended storage temperature: 0 - 30 °C. - Protect from moisture, heat and foreign material. General information: Storage at higher temperatures will result in increase of color and viscosity. Storage at significant lower temperatures will result in solidification. This solidification is reversible by briefly heating the product without adversely affecting the quality of the product.
Storage time
Covestro represents that, for a period of nine 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 nine 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 nine 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 nine 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.
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 .
