BLS 1770

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BLS 1770 (52829-07-9) is a low molecular weight hindered amine light stabilizer that provides excellent light stability for thick sections, but can also be used for articles with a high surface area such as films and tapes.  BLS 1770 provides effective ultraviolet light protection for applications demanding particularly high light stability.  It provides outstanding long-term stability by a radical trapping mechanism similar to that of hindered phenols.  Significant levels of stabilization are achieved at relatively low concentrations.  When compounded, BLS 1770 imparts no negative effects on a substrate’s initial color, its low dust, free-flowing form makes it exceptionally convenient to handle.


Chemical Name:                     Bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate

CAS Number:                          52829-07-9

 Chemical Structure:

BLS 1770

Typical Properties         

Product Form:                         Solid Melting Point:                          80-86oC

 Molecular Weight:                            481 g/mol


BLS 1770 is a hindered amine light stabilizer offering excellent protection against ultraviolet degradation. BLS 1770 areas of application includes polypropylene, impact modified polypropylene, TPO, EPDM, polystyrene, impact polystyrene, ABS, SAN, ASA, and polyurethanes. In addition, BLS 1770 can be highly effective in polyacetals and polyamides. BLS 1770 is particularly effective in polypropylene thick sections, but it can also be used for articles with a high specific surface area such as films and tapes. BLS 1770 can be synergistically combined with other stabilizers like BLS 1328 and BLS 1710.


  • Free-flowing, low dust
  • Excellent long-term light stability in thick cross sections
  • Excellent long-term light stability, particularly in articles with high surface areas such as films and tape
  • Non-coloring and thermally stable
  • Ease of compatibility with other stabilizers
  • FDA cleared for use in adhesives

Guidelines for Use

Recommended use levels range between 0.1% and 0.5%, depending on the substrate, processing conditions, and performance requirements. BLS 1770 can be used in combination with other HALS, UV absorbers, benzoates, antioxidants, and processing stabilizers. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use. Please contact Mayzo for specific recommendations.


This product may be stored up to one year in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.


Please consult the Safety Data Sheet (SDS) prior to handling or using this product.

FDA Regulations

BLS 1770 has been cleared for use in adhesives under 21 CFR §175.105. Please contact your Mayzo representative for complete details, including restrictions of use.

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