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April 26[edit]

Naming of UV absorbers[edit]

I noticed that for UV absorbers, the names are usually composed of the trade name of the product line and a number. Examples:

Tinuvin 320 - Chisorb 320 - Sumisorb 320 ... [1]
Tinuvin 770 - Sanol 770 - Uvaseb 770 ... [2]
Tinuvin P - Uvazol P - Benazol P ... [3]
Tinuvin 328 - CHISORB 328 ... [4]
Tinuvin 360 - Milestab 360 ... [5]

In all of the above cases, there is also a name of the following schema: UV-320, UV-770, UV-P, UV-328, UV-928. I didn't find any information on such a naming convention among that industry. Are these somehow non-proprietary names, so that they may used without breaching property rights of companies? 2001:67C:10EC:574F:8000:0:0:1B1 (talk) 20:14, 26 April 2023 (UTC)[reply]

Perhaps a number like 360 refer to a point of 360 nm in the UV spectrum below which the UV absorption rate of the material meets some set standard. UB-770 would then cover not only the UV spectrum but also the visible spectrum. --Lambiam 16:47, 27 April 2023 (UTC)[reply]