Covestro certifies that the product meets specifications for 6 months from the date of shipment, provided it is stored and handled in accordance with the conditions specified in the ‘Storage’ section. After this period, product performance is not assured; Customers are responsible for retesting material before use. Covestro assumes no liability for product performance after 6 months.
Product description
Impranil® 43031 solution is a one-component polyester urethane based on an aliphatic diisocyanate.
Applications
Impranil® 43031 Solution is used as a topcoat and finish for PVC coatings requiring high surface smoothness and reduced migration of PVC plasticizers.
It is also suitable for use as a topcoat for lining materials, especially for shoe linings with an adhesive polyurethane coating and for polyurethane, PVC and polyacrylate foams used on suitable non-wovens, wovens, knitted fabrics and coagulated substrates.
Impranil® 43031 Solution is also used as the harder component in blends with other aliphatic Impranil® and Desmoderm® Finish products.
Form supplied
Solution in isopropanol/toluene/1-methoxypropanol-2 with a non-volatile content of approx. 25 %.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Non-volatile content | 1.0 g / 60 min / 125°C | 24.0 - 26.0 | % | M020 - ISO 3251 |
| Dynamic viscosity | 23 °C | 7,000 - 15,000 | mPa·s | M014 - ISO 3219/A.3 |
Principal properties
- Very dry handle
- High surface slidability
- Low swelling in PVC plasticizers
- High melting range
- Very high lightfastness
Solubility / thinnability
Impranil® 43031 Solution can be adjusted to the desired application viscosity using solvent mixtures of aromatic hydrocarbons and alcohols. Suitable options include:
- Toluene
- Mixture of toluene and isopropanol
- Mixture of toluene, isopropanol, and 1-methoxypropan-2-ol
- Dimethylformamide
In no case should the content of aromatic hydrocarbons in the overall solvent mixture be less than 33 %, nor should the content of alcohols exceed 67 %.
Storage
- Storage in original sealed Covestro container.
- Recommended storage temperature: 5 - 30 °C.
- Protect from moisture, heat and foreign material.
Storage time
Processing
Impranil® 43031 Solution is used as a topcoat, either alone or in combination with Impranil ELH-A/1 solution.
By blending Impranil® 43031 Solution with Impranil ELH-A/1 solution, the surface texture and hand feel of the coating can be varied.
Furthermore, these mixtures improve resistance to kink breakage. The softening range and plasticizer swelling of Impranil® 43031 Solution are not significantly altered by the mixtures.
In addition, Impranil® 43031 Solution can be used to the same extent as a screen and spray finish when appropriately diluted.
Film properties
The data given below are average values measured in approx. 0.1 mm
transparent films of Impranil® 43031 Solution
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| 100 % modulus | 30 | MPa | DIN 53504 | |
| Tensile strength | Original | 35 | MPa | DIN 53504 |
| Tensile strength | after 14 d Hydrolysis (70°C, 95% r.F.) | 30 | MPa | DIN 53504 |
| Tensile strength | after 42 d Hydrolysis (70°C, 95% r.F.) | 25 | MPa | DIIN 53504 |
| Tensile strength | after 400 h Xenontest | 30 | ||
| Elongation at break | Original | 175 | % | DIN 53504 |
| Lightfastness | 7 | DIN EN SIO 105-B02 | ||
| Volume swelling | ||||
| Acetone** | 2h at room temperature | 70 | % | |
| Ethanole ** | 2h at room temperature | >1000 | % | |
| Ethylacetacte °° | 2h at room temperature | 700 | % | |
| Methylethylketone | 2h at room temperature | 160 | % | |
| Toluole | 2h at room temperature | 60 | % | |
| Melting range | 195-205 | °C | Kofler heating table |
*These values provide general information and are not part of the product specification. **The volume swelling decreases again as the solvent evaporates.
Health and Safety Information
Before working with this product, you must read and become familiar with the available information regarding its risks, proper use, and safe handling. This information is provided in various formats, including the current Safety Data Sheet (SDS) and product label. SDS can be accessed via the following link:
Safety Data Sheets (SDS) for Covestro products | Covestro
For further questions, please use the contact information provided on this technical data sheet.
Disclaimer
Responsibility and Liability
The use of Covestro products, technical assistance, and information (regardless of how provided) is outside Covestro’s control and is solely the responsibility of the customer. The customer must conduct adequate testing to determine the suitability of products for its intended use, including but not limited to technical, health, safety, and environmental aspects. Unless otherwise agreed in writing, all products are sold exclusively under Covestro’s standard conditions of sale, which prevail in case of conflict and are available upon request.
The terms and conditions of sale and delivery are available via the following link:
https://order.covestro.com/covestrostorefront/saleConditions
All information is provided “as is” without warranties, express or implied, including merchantability or fitness for a particular purpose, and is subject to change without notice. To the maximum extent permitted by law, Covestro disclaims, and the customer assumes all liability for losses, damages, or claims arising out of use of Covestro products, technical assistance, or information. Any statement or recommendation not expressly contained in Covestro documentation is unauthorized and shall not bind Covestro. Nothing herein shall be construed as encouraging or recommending the use of any product in conflict with any claim of any patent. No license is implied or in fact granted under the claims of any patent.
Restrictions on Regulated Applications
This product is not intended for use in regulated applications such as agriculture, cosmetics, drinking water contact, food contact, medical products (e.g., medical devices), toys, or similar uses subject to specific regulatory requirements. Prior written approval from Covestro is required before this product may be used in any regulated application. The customer is solely responsible for ensuring compliance with all applicable laws and determining product suitability. Covestro disclaims all liability and warranties for unauthorized regulated uses.
Typical Value
The values provided are typical only and do not represent binding specifications. Unless expressly confirmed in a written contract, these values are not part of the contractual quality agreement and must not be relied upon as a warranty or guarantee of product performance.
Sample
Samples provided by Covestro are intended solely for evaluation and testing purposes by the customer and may not be used in commercial applications, resold, transferred to third parties (except qualified testing service providers acting on behalf of the customer), reverse engineered, modified, or used in any manner not explicitly authorized in writing by Covestro. Samples are provided ‘as-is’ without any warranties, express or implied, including fitness for a particular purpose. Customers are solely responsible for ensuring safe handling, regulatory compliance, and suitability of the material for their intended evaluations. Covestro disclaims all liability for damages or losses arising from the use of samples.
Contact Information
Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .
