(Liquid Hindered Amine Light Stabilizer)

Characterization HALS-765 is a liquid hindered amine light stabilizer which is widely used to improve the weather ability of a variety of polymers.

Chemical Name Bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate +1,2,2,6,6-pentamethyl-4- piperidyl sebacate

CAS Number 41556-26-7 and 82919-37-7

Structure

Applications HALS-765 is a highly effective liquid stabilizer used for a wide range of polymers and applications including polyurethanes, sealants, adhesives, elastomers, unsaturated polyesters, acrylics, vinyl, polymers (PVB, PVC), styrene homo- and copolymers, polyolefins, liquid color concentrates, and other organic substrates.

Features/Benefits HALS-765 provides outstanding performance and its liquid form provides ease of handling and incorporation. It is compatible in a wide array of substrates. HALS-765 has low volatility and is thermally stable.

Guidelines for use Use levels for HALS-765 range between 0.1%, depending on the substrate and performance requirements. Synergistic may be obtained when HALS-765 is used with a ultraviolet light absorber. Performance data are available in many substrates.

For optimum effectiveness, adequate base stabilization (e.g. antioxidants/ processing stabilizers) of the polymer is necessary to prevent thermal oxidation. Sulfur containing stabilizers such as thioesters have e sometimes been found to have a negative effect on the performance of HALS-765. Such influences should be evaluated in specific customer testing. HALS-765 may crystallize during storage below 0 °C , however the product can be easily liquefied by slight warming.