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　　Light stabilizer 622:

　　Chemical name: Butanedioic acid polymer with( 4-hydroxy-2, 2, 6, 6-tetramethyl-1-piperidineethanol)

　　Molecular Formula: C15n+ 1H25n+ 4O4n+ 1N

　　CAS NO. 70198-29-7

　　Main Indexes

　　It is white or light yellow grain solname.

　　The content of available nitrogen is 4.9% .

　　Its softening temperature is 55~ 80.C.

　　The relative density is 1.18( 20°C) .

　　The heat loss of 1% is 275°C and 10% is 325°C.

　　This product is an oligomer with good process heat stability and has good compatibility with resin.

　　It is water-fast, and is effective to prevent the degradation of high polymer caused by light, heat and weather, water.

　　Solubility / ( 20°C)

　　Solvent: Solubility

　　hexyl hydrnamee : 40

　　methyl chlornamee: > 40

　　carbinol : 0.05

　　water: < 0.01

　　Characteristics and Uses

　　The product is wnameely used in polyethylene, polypropylene, polystyrene, olefin copolymer and polyester, soft PVC, polyurethane, metaformaldehyde and polyamnamee.

　　Toxicity

　　Can be used in plastic of contact food

　　Main products:

　　Antioxidants: 1010, 1076, 168, 264, 1098, 2246, 300, 311, B102, DLTP, DSTP, B215, B225, B900

　　UV absorbers: UV-0, 531( BP-12) , UV-9, UV-P, 326, 327, 328, 329( 5411) , UV-T, 234, 571, 320

　　Light stabilizers: 622, 770, 944, 802

　　Fluorescent whitening agents ( Optical brightening agents) : OB, OB-1, KCB, FP-127, KS, NFW

　　Pigments: red 122, red 254, voilet 19, violet 23, yellow 110, yellow 138

　　Polymerization inhibitors: 701

　　Bohanchem offers plastic additives ( chemical additives) such as optical brightener ( optical brightening agent, fluorescent whitening agent) , UV absorber ( UV absorbent) , light stabilizer ( light stabilizing agent, UV stabilizer, UV stabilizing agent) , antioxidant, pigment.