CHIMASSORB^® 81

CHIMASSORB 81 is a solid UV absorber of the 2-hydroxy-benzophenone class. This product significantly improves the resistance of clear coatings to failures upon exposure to sunlight such as discoloration, cracking, loss of gloss and loss of adhesion. Its performance in outdoor applications can be improved further by use in synergistic combination with a hindered amine light stabilizer (HALS) such as Tinuvin 292 or Tinuvin 123. The use of CHIMASSORB 81 should be reserved for applications where expectations of the final coating’s durability are moderate since the light stability of 2-hydroxy-benzophenone derivatives is known to be limited.

Product highlights

• Low yellowing
• Good absorbance in the UV-B region
• Improves failure of coatings resulting from exposure to sunlight including discoloration, cracking and loss of adhesion

Suggested applications:

• Waterproofing
• Industrial coatings

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Technical datasheet

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