LIGHT STABILIZER 770 (CAS:52829-07-9)

Characterization

HALS 770 is a hindered amine light stabilizer (HALS) for applications demanding particularly high light stability. It provides excellent light stability for thick sections but can also be used for articles with a high surface area such as films and tapes.

Chemical name

Bis(2,2,6,6,-tetramethyl-4-piperidyl)sebaceate

CAS number 

52829-07-9

Structure

Molecular weight 

481 g/mol

Applications

HALS 770 is recommended to be used in polypropylene, impact modified PP (TPO), EPDM, polystyrene, impact poystyrene, ABS, SAN, ASA and polyurethanes and is also effective in polyamides and polyacetals.

Features/benefits

HALS 770 is a low molecular weight hindered amine light stabilizer that provides excellent light  stability for thick sections and films in the recommended substrates. Benefit of using HALS 770 is  the high light-stabilizing performance, particularly in PP thick sections. It has broad compatibility and can be easily dispersed. Compared to conventional UV-absorbers, the effectiveness of HALS 770 is less dependent on the  polymer’s thickness. For this reason the use of HALS 770 also provides good light stability in articles with higher specific surface, e.g. films and tapes.

Product forms

Guidelines for use

The recommended concentrations range between 0.1% and 0.5%, depending on the substrate, processing conditions and application. The optimum level is substrate and application specific. Extensive performance data of HALS 770 in various substrates and for various applications is available upon request.

Physical Properties

Melting Range                           81-86 °C

 Solubility (20 °C)                      % w/w 

Acetone                                     19

Chloroform                                45 

Ethanol                                       -

Ethyl acetate                              24

 n-Hexane                                  5

 Methanol                                 38 

Methylene Chloride                  56

 Toluene - Water                       < 0.01 

Volatility Pure substance; TGA, heating rate at 20 °C/min in air

 Weight Loss (%)                      Temperature °C

 0.7                                           150 

0.7                                            175 

1.0                                            200 

2.1                                            225 

7.2                                            250 

19.8                                          275

Handling & Safety

In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Avoid continuous or repetitive breathing of dust. Use only with adequate ventilation. Avoid contact with eyes. Avoid release to the environment. Avoid dust formation and ignition sources. For more detailed information please refer to the material safety data sheet.

Packaging and Handling

Packaging: 25Kg/Carton

Store the product in a cool, dry, well-ventilated area away from incompatible materials. Unless stated, proper storage will permit usage of the product for 12 months from the manufacture date. For additional handling and toxicological information, consult the Material Safety Data Sheet.