Doublecure® TPO-L is a photoinitiator for UV coatings. Since it has a minor λmax located in 379 nm, it can be used for pigmented systems without sacrificing activity. Also due to its unprecedented speed and non-yellowing properties, it is the best recommendation for thick film and white pigmented coating. Basically, a percentage of 1 – 3 % of Doublecure® TPO-L is effective for lacquer preparation. If the resin is made of polyester, there is no need for coinitiators. However, due to its sensitivity toward oxygen inhibition, additional coinitiators such as Doublecure® 184 or 173 is highly recommended for pigmented acrylic finishes.
If the yellowing is not concerned, amine synergist such as Doublecure® EPD or P-115 is also beneficicial to the throughcure. Owing to its absorption of light in the long wave UV region, Doublecure® TPO-L and lacquers produced from it are daylight-sensitive. Therefore, light with wavelengths less than 500 nm must be excluded during storage and processing.
Double Bond Chemical Ind., Co., Ltd. (DBC) specializes in Coatings additives such as antioxidants, UV absorbers, light stabilizers, heat stabilizers, flame retardants, dispersing agents, and brighteners, as well as UV curable products such as oligomers and monomers. Headquartered in Taipei, Taiwan, DBC has six manufacturing sites, 200 reactors, and over 400 experienced employees ready to serve your needs.
The information presented here was acquired by UL from the producer of the product or material or original information provider. However, UL assumes no responsibility or liability for the accuracy of the information contained on this website and strongly encourages that upon final product or material selection information is validated with the manufacturer. This website provides links to other websites owned by third parties. The content of such third party sites is not within our control, and we cannot and will not take responsibility for the information or content.
Double Bond Chemical Ind., Co., Ltd. 双键化工股份有限公司 makes their documentation available in the regions indicated below:
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