BLS 1944


BLS 1944 (70624-18-9 -US or 71878-19-8 – EU) is a high molecular weight hindered amine light stabilizer.  It provides outstanding light stability to many polymers and it also provides long-term stability to polyolefins by a radical trapping mechanism similar to that of hindered phenols.  Significant levels of stabilization are achieved at relatively low concentrations. Because of its polymeric structure, BLS 1944 has a very low volatility (even at high temperatures), low extractability and low migration rate from polymeric substrates.  When compounded, BLS 1944 imparts no negative effects on a substrate’s initial color, its low dust, free-flowing form makes it exceptionally convenient to handle.


Chemical Name:                     Poly[[6-[(1,1,3,3,-tetramethylbutyl)amino –s-triazine-2,4-diyl]



CAS Number:                           70624-18-9 (US) or 71878-19-8 (EU)

Chemical Structure:

BLS 1944

Typical Properties         

Product Form:                         Solid Melting Point:                100-135oC

 Molecular Weight:                   Mn > 2,500

Product Details:  Please view our BLS 1944 PDF

Chimassorb 944