YK-770 is a hindered amine light stabilizer (HALS). It can be used in PE, PP and PS and is also effective in ABS resin and polyurethane. Compared to conventional light stabilizers, the effectiveness of YK-770 is better. Combined with some antioxidant can improve thermal stability. The higher effectiveness of lightfastness is provided when combined with other UV-absorbers.YK-783 is a synergistic mixture of YK-944 and YK-622. It shows outstanding extraction resistance, low gasfading and low pigment interaction and delivers excellent cost/performance benefit. YK-783 is particularly well suited for LDPE, LLDPE, HDPE films, tapes and thick sections and for PP in fibers and films. It also be used in polyolefins (PP, PE), olefin copolymers such as EVA as well as blends of polypropylene with elastomers.YK-944 is an oligomeric hindered amine light stabilizer (HALS). It is suited for using in polyolefin such as PE, PP and PVC as well as in nylon, polyacetals and polyester. YK944 imparts excellen