光稳定剂Lowilite 77 Hindered Amine Light Stabilizer Lowilite 77 is a highly effective light stabilizer belonging to the Hindered Amine Light Stabilizers (HALS) family of stabilizers. Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate CAS Reg. Number [52829-07-9] Typical Properties Appearance Slightly yellow powder or pellets Bulk density, kg/m3 479 Molecular weight 481 Specific Gravity, g/ml @ 35°C 1.05 Melting Range, °C 80 - 85 Flash point, °C >150 Thermogravimetric Analysis ( 10 mg @ 10°C/minute under N2) Weight Loss, % 5 10 25 Temperature,°C 220 240 260 Solubility @ 20°C (g/100 ml solvent) Water <0.01 Acetone 19 Hexane 5 Methanol 38 O C O (CH2)8 O C O N H N H Methylene chloride 56 Chloroform 45 The effectiveness of Lowilite 77, as a stabilizer, is superior to classic products such as UVAs and nickel-containing stabilizers. Lowilite 77 is very suitable, alone or in combination with oligomeric HALS, for the UV stabilization of tapes and thick items such as car bumpers and garden furniture. Lowilite 77 is recommended for polymers such as polyolefins, PS, HIPS,ABS, SAN and ASA. It is also effective in polyurethanes, polyamides and polyacetals.
