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NO.
NAME
NOTE
     
02-1
ABSORBENT UV-326
02-2
ABSORBENT UV-327
02-3
ABSORBENT UV-328
02-4
ABSORBENT UV-329
02-5
ABSORBENT UV-531
     
ULTRAVIOLET RADIATON ABSORBENT UV-326
Chemical Name:  2-(2'-Hydroxy-3'-tert-5' methyphenyl) -5-chlorobenzo+riozole
Molecular formula C17H18N3OCL

Molecular Weight 315.8
CAS# 3896-11-5
Introduction:  This product can be dissolved in such organic solvent as benzol, touene, phenyethene, etc. Can not be dissolved in water. It can be easily dissolved in some kinds of resin, and it is not sensitive to mental ions. Under alkalinity, as low volatile, it is not turned into yellow, and can absorb the ultraviolet ray of 270-380mm wavelength effectively. When used with antioxidant, it has cooperative effect. With lower poison, it is considered as the world's sagest plastic accretion.
Physical Properties:
Appearance: Yellowish Powder
Assay:
≥99%
Melting Range: ≥138℃
Ash:
≤0.1%
Light Transmittance: 460nm≥93%
500nm≥96%
Volatiles:
≤0.5%
Solubility: (At 20g/100ml solvent)
Water insoluble Methanol
/
Acetone 1 Ethyl acetate
2
Chloroform 11 n-Hexane
1
Applications: This product is an excellent light stability for plastics. It is suitable for polyalkemer (especially foodstuffs), polyvinyl choired, polyamide, ABS resin, AS resin and polyurethane etc.
Package:  The package is the paperboard drum lined with plastic bag. The net eight is 10kg / drum (20kg / drum).
Storage: When stored, please avoid the rain, moisture and sunshine.
Period of Validity:  About 2 years

ULTRAVIOLET RADIATON ABSORBENT UV-327
Chemical Name:  2,4-DI-TERT-BUTYL-6-((5-CHLOROBENZOTRIAZOL-2-YL) PHENOL
Molecular formula
C20H24N3OCL

Molecular Weight
358
CAS#
3864-99-1
Introduction:  This product is an ultraviolet light absorbent of the hydroxyphenyl benzotriazole class, which imparts outstanding light stability to plastics and other organic substrates.
Physical Properties:
Appearance: Yellow powder Assay:
≥99%
Melting Range: ≥154℃ Ash:
≤0.1%
Light Transmittance: 460nm≥95%
500nm≥97%
Volatiles:
≤0.5%
Solubility: (At 20g/100ml solvent)
Water
<0.01
Methylene chloride
17

Acetone

1
Methanol
<0.1

Benzene

16
n-Hexane
4
Applications: This product is a highly effective light stability for variety of plastics and other organic substrates. Due to Its red shifted UV absorption, it is particularly suited foruse in the stabilization of polymers that are especially sensitive to long-wavelength UV radiation (eg. Polyurethanes, polyphenylene sulfide) and in certain applications where very low transmission of long-wavelength UV radiationis required (eg. Optical lenses). Its use is recommended in a variety of polymers and organic substrates, including a crylic polymers, unsaturated polyesters, polyvinyl-chloride, polyolefins, polyvinglbu-tyral, elastomers and adhesives.
Package: The package is the paperboard drum lined with plastic bag. The net weight is 20kg / drum
Storage: When stored, please avoid the rain, moisture and sunshine
Period of Validity:  About 2 years
ULTRAVIOLET RADIATON ABSORBENT UV-328
Chemical Name:  2-(2'-Hydroxy-3',5'-di-tert-pentylphenyl)benzotriazoies
Molecular formula
C22H29N3O

Molecular Weight
351.5
CAS#
25973-55-1
Introduction:  This product is an ultraviolet light belonging to the benzotriazole class UVAs. It may absorb UV between 270 nm to 380 nm, max345nm. Physical Properties:
Appearance: Slightly yellow powder Assay:
≥99%
Melting Range: ≥80℃ Ash:
≤0.1%
Light Transmittance: 460nm≥97%
500nm≥98%
Volatiles:
≤0. 3%
Solubility: (At 20g/100ml solvent)
Water
0
Methyl Ethyl Ketone
24
Xylene
44
Ethyl Acetate
20
Minersal Spirits
14
n-Butyl acetate
28
Applications: UV-328 is a highly effective light stabilizer for a variety of plastics and other organic substrates.It’s used as recommended for the stabilization of styrene home and copolymers, acrylic polymers, unsaturated polyesters, polyvinyl chloride, polylefins, polyruethanes ,polyacetals, etc.
Package:  The package is the paperboard drum lined with plastic bag.
The net weight is 10kg / drum ,(20kg / drum) or as required
Storage: When stored, please avoid the rain, moisture and sunshine.
ULTRAVIOLET RADIATON ABSORBENT UV-329
Chemical Name:  2-(2'-hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole
Molecular formula
C20H25N30

Molecular Weight
323
CAS#
3147-75-9
Introduction:  It is high-efficient light stabilizer, absorbing UV with low volatility, used in polystyrene, Perspex, polyester, Rigid pvc, polycarbonate, ABS resin, etc. It is quite fit for transparent products and engineering plastics processed in high-temperature. It has good cooperative effect when used with anti-oxidant to increase the resistance to climate and heat stability.
Physical Properties:
Appearance: Yellowish Powder Assay:
≥99%
Melting Range: 103-105℃
Light Transmittance: 440nm ≥97%
500nm ≥98%
Applications: UV-329 is a strong ultraviolet absorber in the 300-400 nm region. It provides effective light stabilization and prevents the yellowing and degradation of polymers such as polyolefins, PVC, unsaturated polyester, acrylics and ABS. It can be used alone or in combination with other stabilizers,such as antioxidants. The use of UV-329 in combination with HALS is particularly noteworthy in that a synergistic performance is often observed.
The use levels of UV-329 range between 0.10-1.0%,depending on substrate and performance requirements of the final application.
Package:  Net weight:25kg/paperboard drum
Storage: When stored, please avoid the rain, moisture and sunshine.
Period of Validity:  About 2 years.
ULTRAVIOLET RADIATON ABSORBENT 531
Chemical Name:  2-Hydroxy-4-n-octoxybenzophenone
Molecular formula
C21H26O3

Molecular Weight
326
CAS#
1843-05-6
Introduction:   ABSORBENT 531 can absorb the ultraviolet ray of 240-340mm wavelength effectively. When used with antioxidant, it has cooperative effect.  Physical Properties:
Appearance: PALE YELLOW Powder Assay:
≥99%
Melting Range: 47-49℃ Ash:
≤0.1%
Light Transmittance: 460nm≥97%
500nm≥98%
LOSS ON DRYING:
≤0.5%
Applications: UV-absorber for plasticized and rigid PVC, polyester, PS, Acrylate resins, vinyl ester based coatings, PU based coatings, alkyed resin coatings, improves the weather resistance of the coating.
Package:  The package is the paperboard drum lined with plastic bag. The net eight is 10kg / drum (20kg / drum).
Storage: When stored, please avoid the rain, moisture and sunshine.
Period of Validity:  About 2 years