Hindered amine light stabilizer uv944 ultraviolet absorber
Light stabilizer uv944
1. Chemical name: Tetramethylpyridine
Hengnuo Model 944
Ultraviolet absorbent 944
CAS: 70624-18-9
Second, product quality:
Product Specification Industry
Appearance white or light yellow powder
Molecular weight > 2000
Effective substance content 98 (%)
Volatile fraction (%) less than 0.5 (105 degree C, 2hr)
Ash (%) < 0.5
Solution point > 100 degree C
Third, the nature of the product:
This product is white or light yellow powder, soluble in acetone, benzene, chloroform and other organic solvents, the relative density is 1.01 (20 C), thermal weight loss 300 C is 1%, the effective nitrogen content is 4.6%.
IV. Product uses:
This product is a hindered high molecular weight light stabilizer, because it has a variety of functional groups in the molecule, so the light stability is high. Because of its high molecular weight, the product has good heat resistance, extraction resistance, low volatility and good resin compatibility. This product is mainly suitable for low density polyethylene film, polypropylene fiber, polypropylene tape, EVA film, ABS, polystyrene and food packaging. The recommended usage in the production of plastic film in greenhouse is 2.
Product Packaging: 25kg/cardboard drum lined with plastic bags
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