光稳定剂

产品名称： LS791

Characterization                                LS 791is a synergistic mixture of light stabilizer944 and light stabilizer 770.

It is an excellent light stabilizer especially for PPthick sections, which offers

excellent surface protection. It also shows highstabilization efficiency in PP

tapes.

CASNO.                                                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 =2000–3100g/mol

Structure                                           Tinuvin770

and

Molecularweight                              481g/mol

Productforms                                        Appearance:whitetoslightlyyellowgranules,odorless

Guidelinesforuse                                  Thicksections*:              UVstabilizationofPP                                0.1–0.8%

Tapes:                          UVstabilizationofPP                                0.1–0.8%

Physicalproperties                           Meltingrange:                              approx. 55 °C start

Specificgravity(20°C):                    1.0–1.2g/cm3

Flashpoint:                                   >150°C

Vaporpressure(20°C):                    <0.01Pa

Applications                                          LS 791areasofapplicationarePP,blendsofpolypropylenewithelastomersandPA:Itcanalsobeusedinstyrenicpolymers,e.g.ABS,impactpolystyrene,etc.