Ultraviolet absorbent UV-791 Characterization UV 791 is a synergistic mixture of light stabilizer944 and LS 770. It is an excellent light stabilizer especially for PP thick sections, which offers excellent surface protection. It also shows high stabilization efficiency in PP tapes.
CAS NO. 71878-19-8 / 52829-07-9 Chemical namePoly[[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidinyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidinyl)imino]])
Structure light stabilizer944
Molecularweight Mn= 20003100g/mol Structure LS770
and
Molecularweight 481g/mol
Product formsAppearance: white to slightly yellow granules, odorless
Guidelines for use Thick sections*: UV stabilization of PP 0.1 0.8 % Tapes: UV stabilization of PP 0.1 0.8 %
* The presence of a UV absober (e. g. UV326/328 or UV 81) isrecommended in unpigmented or slightly pigmented articles or to improvethe light fastness of certain organic pigments.
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